v ? § V; /v Z^^Vr *^ : £.* § ,V> ^ i i v & -v m .v.* x ?SB*£ *Wfift ¥* *?fes •^*; %"•'' ■4 $*J» ■*&& mm &s :»FaSn $" '^;fe' t^mm* m&rwFr' i, '$*&gjfi\ J-~>, \^>;*V ***£ *^|| ^Pff l- «J >■■ \ * ■ w. m i < 9 ip |5 ST." , rife .^- jw - /**«" b T PROCEEDINGS OF THE ACADEMY OF NATURAL SCIENCES OF PHILADELPHIA. 1898. COMMITTEE ON PUBLICATION: Thomas Meehan, Charles E. Smith, Edward J. Nolan, M. D., Henry Skinner, M. D., Henry A. Pilsbry. Editor : EDWARD. J. NOLAN, M. D. PHILADELPHIA: ACADEMY OF NATURAL SCIENCES, LOGAN SQUARE. 1899. Academy of Natural Sciences of Philadelphia, January 31, 1899. I hereby certify that printed copies of the Proceedings for 1898 have been presented to the meetings of the Academy and mailed as follows : — ges 9 to 152 mailed April 5, 1898, presented April 5, 1898 " 153 to 200 (< May 3, 1898, 1 May 3, 1898. " 201 to 248 (i June 13, 1898, ' June 14, 1898. " 249 to 328 i« July 12,1898, July 12, 1898 " 329 to 344 a August 2, 1898, ' August 2, 1898 " 345 to 360 a October 4, 1898, ' October 4, 1898 " 361 to 424 a October 15, 1898, ' October 18, 1898 " 425 to 456 a October 29, 1898, ' November 1, 1898 " 457 to 472 << December 12, 1898, ' Dece uiber 13, 1898 " 473 to 488 K January 13, 1899, ' January 17, 1899 " 489 to 504 c< January 26, 1899, ' January 31, 1899 EDWARD J. NOLAN, Recording Secretary DOCKER-FOSTER CO., PRINTERS, PHILA. LIST OF CONTRIBUTORS. With reference to the several articles contributed by each. For Verbal Communications, Announcements, etc, see General Index. Barber, C. M. and T. D. A. Cockerell. A new Weasel from New Mexico 188 Boyer, Charles S. New Species of Diatoms (Plate XXIV) 470 Calvert, Philip P. Odonata (Dragonflies) from the Indian Ocean, and from Kashmir, collected by Dr. W. L, Abbott 141 Cockerell, T. D. A. New and little4vUown Bees from Wash- ington State .....*.. 50 Conklin, Edwin G., Ph. D. Environmental and Sexual Dimorphism in Crepidula (Plate XXI, XXII, XXIII) 435 Cope, Francis R. The Summer Birds of Susequehanna County, Pennsylvania ...... 76 Coues, Dr. Elliott. Notes on Mr. Thomas Meehan's Paper on the Plants of Lewis and Clark's Expedition across the Continent, 1804-06 ...... 291 Dall, William H. Synopsis of the Recent and Tertiary Psammobiidae of North America . . . .57 On the Genus Halia of Risso 190 Fox, William J. Contributions to a Knowledge of the Hymenoptera of Brazil, No. 4 — Thynninae and addi- tions .......... 72 Contributions to a Knowledge of the Hymenoptera of Brazil, No. 5. — Vespida? ...... 445 Hamilton, S. Harbert. The Occurrence of Marcasite in the Raritan Formation ...... 485 Harshberger, John W., M. D. Botanical Observations on the Mexican Flora, especially on the Flora of the Valley of Mexico 372 Hough, Garry de N., M. D. The Muscidse collected by Dr. A. Donaldson Smith in Somaliland . . . 165 Goldsmith, Edward. Volcanic Rocks of Mesozoic Age in Pennsylvania (Plates II, III, IV, V) ... 90 The Petrifaction of Fossil Bones ..... 98 Von Ihering, H. Contributions to the Herpetology of Sao Paulo, Brazil.— I 101 Johnson, Chas. W. Diptera collected by Dr. A. Donaldson Smith in Somaliland, Eastern Africa . . . .157 New Cretaceous Fossils from an Artesian Well-boring at Mount Laurel, N. J 461 ,/ V v ^o Jordan, David Starr and James Alexander Gunn, Jr. List of Fishes collected at the Canary Islands by Mr. 0. F. Cook, with descriptions of four new Species . 339 Keller, Ida A. The Growth of Viburnum lantanoides Michx. (Plate XXV) . . . . . .482 Letson, E. J. Description of a new Tethys (Aplysia) (Plate VIII) .193 Meehan, Thomas. The Plants of Lewis and Clark's Expedi- tion across the Continent, 1804-1806 .... 12 Merriam, C. Hart. Descriptions of three new Rodents from the Olympic Mountains, Washington . . . 352 Miller, Gerrit S., Jr. List of Bats collected by Dr. W. L. Abbott in Siam . 316 Descriptions of five new Phyllostome Bats . . . 326 A new Chipmunk from Northeastern China . . . 348 Notes on the Arctic Red-backed Mice .... 358 Description of a new Genus and Species of Microtine Rodent from Siberia 368 Moore, J. Percy. Hyalodendron navalium, a new Genus and Species of Euplectellid Sponge (Plates XIX, XX) 430 Palmer, T. Chalkley. Observations on Errant Frustules of Eunotia major (Plates VI, VII) . . . .110 Pilsbry, H. A. Chitons collected by Dr. Harold Heath at Pacific Grove, near Monterey, California . . . 287 A new Land Shell from Clarion Island . . . 354 New Species of Odontostomus from Brazil aud Argentina. 471 Margarita Sharpii, a new Alaskan Gastropod . . 486 Pilsbry, H. A. and E. G. Vanatta. Anatomical Notes on certain West American Helices (Plate I) . . .67 Revision of the North American Slugs: Binneya, Hern- phillia, Hesperarion, Prophysaon and Anadenulus. (Plate IX, X, XI XII, XIII, XIV, XV, XVI). . 219 Materials toward a Natural Classification of the Cylin- drelloid Snails (Plates XVII, XVIII) . . . 2j . June v. s. in Herb. Lewis.20 Caprifolmm ciliosum Pursh, [but not the type specimen]. A. tomentosa Pursh, (n o t Willd.), Fl. 563. On the banks of the Kooskooskee, M. Lewis. 11 . June, v. s. in Herb. Lewis.22 Amellus spinulosus Pursh, Fl. 564. In open prairies on the Missouri, M.Lewis. 2/. August, September, v. s. in Herb. Lewis ™ Caprifolium ciliosum Pursh. 21 Lonicera ciliosa Poir. "On the Kooskooskee, June 5, 1806" A flowerless branch. Pursh says: " on the banks of the Kooskooskee, M. Lewis, June ; flowers of a deep yel- low." In the Journal, reference is made to " the honeysuckle first found on the Kooskooskee, near the Chopunnish Nation, and again below the Grand Rapids," as among the plants of the Pacific coast. 22 Achillea Millefolium L. '' Camp on the Kooskooskee, May 20, 1806." Described by Pursh as, A. tomentosa Willd, " on the banks of the Kooskooskee, M. Lewis, June; flowers yellow." The specimens were evidently white, but turned yellow in drying. Pursh, Fl. II, 563, not 319, as quoted in Gray's Synoptical Flora. 1898.] NATURAL SCIENCES OF PHILADELPHIA. 31 Aplopappus sp. On the Columbia, October, 1805. Artemisia cana Pursk. No. 55. October 2, 1804. Growth of the high bluffs. Artemisia cana Pursh. On the bluffs, October 2, 1801. Artemisia cana Pursh. Ou the bluffs, October 1, 1804. No. 60. 1804, October 1st. Another variety of wild sage growth of high and bottom prai- ries. Artemisia dracunculoides Pursh. No. 52. September 15, 1804. Growth of the open plains. On the bluffs, September 15, 1804. [Good specimen]. Artemisia frigida Willd. No. 41 found on the bluffs the 2d of September, 1804, is the growth of open high situations. On the bluffs, September 2, 1804. [Good specimen]. Artemisia frigida Willd. No. 51. 1804, October 3d. Radix perennial ; 3 to 8 stalks as high as the specimen ; growth of the high sides of the bluffs. Artemisia longifolia Nutt. Wild sage on the bluffs, Octo- ber 1,1804. No. 53. October 3d. Flavor like the camomile, radix perennial ; growth of the high bluffs. Pursh, FL 521. On the Mis- souri, M.Lewis. 2/. September, November, v. s. in Herb. Lewis. Pursh, Fl. 1. c. Pursh, Fl. 1. c. A.Dracunculus Pursh (not L.)r Fl. 521. On the Missouri, M. Lewis. % . August, October, v. s. in Herb. Lewis. Pursh, Fl. 521. On the plains of the Missouri, M.Lewis. %. October, November, v. s. in Herb. Lewis. Pursh, Fl. 1. c. A. integri folia Pursh (not Willd.), Fl/520. On the cliffs and dry savannahs of the Mis- souri, M. Lewis. % . October, v. s. in Herb. Lewis. About three feet high. 32 PROCEEDINGS OF THE ACADEMY OF [1898. Artemisia Ludoviciana Nutt. ? Artemisia species. Columbia River, April 10, 1806. Artemisia. Rockford Camp. Asl^r oblongifolius Nutt. Big bend of the Missouri, Sep- tember 21, 1804. Aster Oreganus Nutt. On Lewis River, October, 1805. Balsamorrhiza sagittata Nutt. Rocky Mountains, dry bills, July 7, 1806. Balsamorrhiza sagittata Nutt. The stem is eaten by the na- tives without any preparation. On the Columbia, April 14, 1806. [Bidens-like composite, too poor to identify]. On Lewis's River, October, 1805. Bigelowia graveolens Gray. A low shrub growing in the rocky, dry hills on the Koos- kooskee. May 6, 1806. Bigelowia graveolens Gray. No. 54, Oct. 2. Grows from 18 inches to 2 h feet, many stalks from the same root, from which they issue near the ground ; the radix perennial. The goat or antelope feed on it in the winter, it is the growth of the high bluffs. High bluffs; goats feed upon; 18 inches high. Oct. 2, 1804. Buphthalmum sag ittatum Pursh, Fl. 564. On dry barren hills in the Rockv Mountains, M. Lewis. % . June, July, v. s. in Herb. Lewis. The natives eat the young stems as they spring up, raw. Buphthalmum sag ittatum Pursh, 1. c. Chrysocoma dracunculoides Pursh (not Lam.), Fl. 517. On high cliffs on the banks of the Missouri. M. Lewis. % . Oct. v. s. in Herb. Lewis. 1898.] NATURAL SCIENCES OF PHILADELPHIA. 33 Bigelowia graveolens var. albioaulis Gray. 15 Oct. 1805, on the Colum- bia River. Cnicus edulis Gray. Carduus or Thistle-Roots, eat- able. Fort Clatsop, March 13, 1806.23 Eriophyllum caespitosum Dougl. On the uplauds on the Koos- kooskee River. June 6, 1806. Gaillardia aristata Pursh. Rocky Mountains, dry hills. July 7, 1806. Grindelia squarrosa Dunal. No. 40, taken on the 17th of August, 1804, at our camp near the old Maha village, and is the growth of the prairies. Anony- mous balsamifera, new genus, Prairies; in the camp near the old Maha village. Aug. 17, 1804. [Good specimen]. Chrysocoma nauseosa Pall, in herb. Pursh, PI. 517. On the banks of the Missouri. M. Lewis. % . Oct. v. s. in Herb. Lewis. Actinella lanata Pursh, Fl. 560. On the high lands of the Koos- kooskee. M. Lewis. % . June, July, v. s. in Herb. Lewis.24 Pursh, Fl. 573. On dry hills on the Rocky Mountains. M. Lewis. $ . v.s. in Herb. Lewis. Donia squarrosa Pursh, Fl. 559. In open prairies on the banks of the Missouri. M. Lewis. % . Aug., Sept., v. s. in Herb. Lewis ; v. v. cult. 23 Cnicus edulis Gray. Only a single leaf, overlooked by Pursh. " Leaves of a thistle ; roots edi- ble. Fort Clatsop, March 13, 1806. The Journal of January 20th says: " The root is the part used. It is nine to fifteen inches long — the size of a man's thumb, perpendicular, fusiform; when first taken from the earth, the root is white, and nearly as crisp as a carrot. In this state it is sometimes eaten without any preparation, but after it is prepared after the same process used for the pashemo-quamash, which is the most usual and best method, it becomes black, but is much improved in flavor. Its taste is exactly that of sugar, and it is indeed the sweetest vegetable employed by the Indians." 2i Eriophyllum cccspitosiun Douglas Described by Pursh as Actinella lanata, II, 56", "on the uplands on the Kooskooskee, Jwne 6 1806." Pursh says : "on the highlands of the Kooskoos- kee, M. Lewis, June and July." It resembles in habit Pursh's Actinea. A mate to this specimen is in the herbarium of the Academy as " Actinea lanata." From a number of specimens from different localities, those of Lewis differ in having the flower stalks thicken upwardly. 34 PROCEEDINGS OF THE ACADEMY OF [1898. Gutierrezia Euthamiae Torr. & Gray. No. 32. Specimens of aro- matic plants on which the ante- lope feeds; these were obtained 21st of Sept. 1805, at the upper part of the big bend of the Mis- souri. Upper part of the big bend of the Missouri, Sept. 21, 1804. Gutierrezia Euthamiae Torr. & Gray. No. 59, 1804, 19th September, the growth of high and bare prai- ries which produced little grass, generally mineral earth. High, bare prairies, mineral earth, with very little grass. Sept. 19, 1804. Liatris pycnostachya Michx. No. 35, Sept. 15th growth of the prairies. Prairies, Sept. 15, 1804. Liatris soariosa Willd. No. 53, 1 2th September, growth of high and dry prairies. High and dry prairies. Sept. 12, 1804. Matricaria discoidea D C. An agreeable smell. On the Kooskooskee, June 9, 1806. Mioroseris macrochaeta Gray. Rock Camp. April 17, 1806. Solidago rigida L. High dry prairies. Sept. 13, 1804. [Composite? Poor, sterile and not placed; leaves opposite, much divided into narrow segments, very pubescent]. One of the Solidago Sarothrce Pursh, Fl. 540. On the plains of the Mis- souri. M.Lewis. %. Sept. v. s. in Herb. Lewis. Solidago Sarothrce Pursh, Fl. [Lewis' specimen not men- tioned by Pursh]. Santolina suaveolens Pursh, Fl. 520. On the banks of the Koos- kooskee. M. Lewis. ©. June- Aug. v. v. ; v. s. in Herb. Lewis. 1898.] NATURAL SCIENCES OF PHILADELPHIA. 35 most common plants of the plains of Columbia. May 27, 1806. Arctostaphylos Uva-ursi Spreng. Arbutus Uva-ursi Pursh (not No. 33. An evergreen plant Willd.), Fl. 283. On the plains which grows on the open plains, of the Mississippi ; the Indians usually; the natives smoke its smoke the leaves under the name leaves mixed with tobacco; called of Sacacommis,and considerthem by the French Engages (?) saca- of great medicinal virtue.25 commis ; obtained at Fort Man- dan. Fort Mandan, open plains. Evergreen called Sacacommis, natives smoke its leaves. Pursh, Fl. 282 [but does not Arbutus Menziesii Pursh. A middle-sized tree with a re- mention Lewis' specimen], markable smooth bark, which scales off in the manner of the birch, and red berries in clusters. Columbia River, Nov. 1, 1805. Gaultheria Shallon Pursh. Pursh. Fl. 283. On the falls The shallon, supposed to be a of Columbia and near the west- species of Vaccinium. On the ern ocean. M. Lewis. \ . May, coast of the Pacific Ocean. June June, v. s. in Herb. Lewis nee 20, 1806. non Banks.26 25 Arctostaphylos Uva-ursi Sprengel. " An evergreen plant which grows in the open plains usually ; the natives smoke its leaves mixed with tobacco. It is called by the French Engagees sacacommis, obtained at Fort Mandan." Pursh, Fl. I. 283, says : "on the plains of the Mississippi the Indians smoke the leaves under the name of sacacommis, and consider them of great medicinal value," but does not credit Lewis. It is not clear whom he refers to as " Engages," but the name may have been given by the French and not by the Indians. The Journal speaks of a plant " known by the traders as sacacotnmis."1 Professor Knowlton in the notes to Coues' edition of the travels, suggests the Arctostaphylos pungens for this, but Lewis' label as above, settles the question. The Journal further says : " The natives eat the berries without any preparation. They are some- times gathered and hung in the lodges in bags." 26 Gaultheria Shallon Pursh. Described and figured by Pursh, I, 284. " The shallon, supposed to be a species of Vaccinium, on the coast of the Pacific Ocean, January 10. 1806 ;" leaves and branches only. Pursh says : '' on the Falls of the Columbia and near the western Ocean, M. Lewis." He further notes that he described from the more perfect specimens of Menzies. The Journal says : " Shallum is a favorite food of the elk It has a dark purple berry of pleasant flavor. The natives eat the berry when ripe, but seldom collect it in quantities to dry for winter use." It is generally known in these times as the Salal berry. 36 PROCEEDINGS OF THE ACADEMY OF [1898. Vaccinium Myrtillus L. New species. With a purple, small berry, eatable — an ever- green. Fort Clatsop, June 20, 1806.27 Vaccinium ovatum Pursh. A shrub of 7 or 8 feet high, supposed to be a species of Vac- cinium ; the berries are eaten by the natives On the Pacific Ocean. Fort Clatsop, June 27, 1806. Dodecatheon Meadia L. Near the narrows of the Co- lumbia River. April 16, 1806.29 Frasera thyrsiflora Hook. In moist wet places, on the Squamash flats. June 14, 1806. [Leaf only]. Collomia linearis Nutt. Rockford Camp. April 17, 1806. Pursh, Fl. 290. lumbia River. M. May.28 On the Co- Lewis. b_ . Swertia fastigiata Pursh, Fl. 101. On the Missouri Flats near the Rocky Mountains. M. Lewis. 11. Julv, v. s. in Herb. Lewis. 27 Vaccinium myrtilloides L. This specimen is not in flower or fruit, but is so nearly a fac-simile of some forms of Gaultheria Myrsinites, which Pursh's Vaccinium obtusum has been supposed to be, that it is in all probability the type of V. obtusum, Fl., p. 290, though the description refers only to a specimen collected by Menzies. 28 Vaccinium ovatum Pursh. '' A shrub 7 or 8 feet high, supposed to be a species of Vaccinium. The berries are eaten by the natives. On the Pacific Ocean. Fort Clatsop, June 27, 1806." Pursh simply says I, p. 290, " on the Columbia Eiver, M. Lewis." The Journal notes among the berry plants esteemed by the natives " a species of huckleberry," and. referring to the huckleberry, "there are two species of shrubs, first seen at the Grand Rapids of the Columbia, and since seen else- where. They grow in rich, dry ground." The Columbia River specimen not now in the collection was probably the one from which the description was made. 29 Dodecatheon Meadia L. 4< Near the narrows of the Columbia River, April 16, 1806." Pursh over- looks this ; it was probably the first finding of it so far west. There might have been a specimen collected on the march up the Missouri in 1804. as in the Journal under date April 17th, it is noted that " violets, doves foot and cowslips are in bloom *' the Dudecatheon being probably referred to as cow- slips. If to the return from the Pacific, April 9, 1806, when they found ''cow- slips" again in bloom, would refer to the Columbia specimen. 1898.] NATURAL SCIENCES OF PHILADELPHIA. 37 Gilia aggregata Spreng. On Hungry Creek, June 26, 1806. [Flowering stem]. Polemonium caeruleum L. Headwaters of the Kooskoos- kee. June 27, 1806. Phacelia circinata Jacq. Root fibrous, plant from 3-4 feet high ; dry situation. On the Kooskooskee, June 9, 1806. [Poor specimen], Phacelia Menziesii Torr. ! Rocky Camp. April 17, 1806. Cantua aggregata Pursh, Fl. 147. Ou the banks of the Mis- sissippi. M.Lewis. $. June, v. s .in Herb. Lewis. Plagiobothrys tenellus Gray. Rocky Camp. April 17,1806. Krynitskia sp. ? Rocky Camp. April 17,1806. Nicotiana quadrivalvis Pursh. No. 45. Specimen of the Ri- cara's tobacco, taken 12th of Oc- tober, 1804. 12th of October, at the Ricara's town. This is the tobacco which they cultivate. Phacelia heterophylla Pursh, Fl. 140. On dry hills on the banks of the Kooskooskee. M. Lewis. $ . June, July, v. s. in Herb. Lewis.30. Hyilrophyllum lineare Pursh, Fl. 134. On the banks of the Missouri. M. Lewis. %. April, v. s. in Herb. Lewis. [Specimen in Hb. Philnda. Acad, showing flowers and leaves, root annual, not perennial.] Pursh, Fl. 141. Cultivated and spontaneous on the Missouri, principally among the Mandan and Ricara nations. O. July, v. v. ; v. s. in Herb. Lewis nee non Nuttall. The tobacco prepared from it is excellent. The most delicate tobacco is prepared by the Indians from the dried flow- ers. 30 Phacelia circinata Jacq. t". Described by .Pursh Fl., I, 140, as Phacelia heterophylla . " On the Koos- kooskee, August 9, 1806 ; root fibrous, plant3 to 4 feet high ; dry situations." Pursh says: "on dry hills on the banks of the Kooskooskee, July, August." Only a few leaves and a portion of the flower branch have escaped the rava ges of the beetles. The specimen from which Pursh took his description, evidently, is in the herbarium of the Academy of Natural Sciences, under the provisional name of Phacelia scabiosarfolia. 38 PROCEEDINGS OF THE ACADEMY OF [1898. Collinsia parviflora Dougl. Rockford Camp. April 17, 1806. [From size of corolla ap- parently C. parviflora rather than C. violacea as placed by Gray, yet identity is not certain]. Mimulus luteus L. On the waters of Clark's River, July 4,1806. [Indifferent speci- mens but showing stem, leaves and flowers ; upper portion of the plant is not glabrous as described by Pursh, 1. c, but finely and densely glandular-puberulent. Orthocarpus tenuifolius Benth. Valley of Clark's River, July 1, 1806. [A. good specimen, showing, the root to be distinct- ly annual, not perennial, as de- scribed. The color of the flow- ers is not shown.] Pedicularis Groenlandica Retz. On the low plains on the heath of Clark's River, July 6, 1806. P. uncinata Willd. [Pursh named this P. uncinata Willd., (Siberian)on his label, but evidently discovered his error be- fore publication, as in his Flora he gives P. Groznlandica~\. Pedicularis scopulorum Gray. ? On the low plains on the heath of Clark's River. July 6, 1806. Antirrhinum tenellum Pursh, Fl. 421. On the banks of the Missouri. M. Lewis. ©. July, v. v. ; v. s. in Herb. Lewis. Pursh, Fl. 426. On the banks of Clark's River. M. Lewis. On the northwest coast, Pallas. %. July, Aug., v. s. in Herb. Lewis, nee non Lambert. Bartsia tenuifolia Pursh, Fl. 429. On the banks of Clark's River. M. Lewis. 11 . July, v. s. in Herb. Lewis. Pursh, Fl. 426. In low plains of the Columbia. M.Lewis. %. July, v. s. in Herb. Lewis nee non Lambert. P. elata Pursh (not Willd.), Fl. 425. In the low plains, on the waters of Clark's River. M. Lewis. 11. July, v. s. in Herb. Lewis. , [P. elata Pursh, not Willd., has been doubtfully referred to P. bracteosa Benth., but it is cer- tainly different. It has purple 1899.] NATURAL SCIENCES OF PHILADELPHIA. 39 Pentstemon diffusus Dougl. Camp on the Kooskooskee, May 20, 1806. Synthyris reniformis var. major Hook. On Hungry Creek, June 26, 1806. [Does not well agree with Veronica reniformis Pursh (ex. char.), Fl. 10, for that is said to have a creeping stem, opposite leaves and alternate peduncles, and to have been collected in boggy soil on the banks of the Missouri.] Salvia lanceolata Willd. Big bend of Missouri, Sept. 21, 1804. [Good specimen]. Scutellaria angustifolia Pursh. On the Kooskooskee, June 5, 1806. Oxybaphus nyctagineus Sweet. Open plains, Sept. 1, 1804. [Fairly complete.] Atriplex canescens James. Sept. 21. Big bend of the Missouri, Sept. 21, 1804. Atriplex Nuttallii Wats. A half shrub from the high plains of Missouri, July 20, 1806. flowers as described, but the calyx is not glabrous but pubescent. In all characters shown it agrees well with P. scopulorum Gray, notwithstanding difference in dis- tribution and altitude.] S. trichostemmoides Pursh, Fl. 19. In open plains on the Mis- souri River. M.Lewis. O. v. s. in Herb. Lewis. Pursh, Fl. 412. On the river Kooskooskee. M. Lewis. % , June, v. s. in Herb. Lewis. Allionia ovata Pursh, Fl. 97. On the plains of the Missouri. M. Lewis. ©. Aug. v. s. in Herb. Lewis. Calligonam canescens Pursh, Fl. 370. In the plains of the Missouri, near the big bend, k ■ July, Aug. v. s. in Herb. Lewis. 40 PROCEEDINGS OF THE ACADEMY OF [1898. Sarcobatus maculatus Ton-. A small branchy shrub from the plains of Missouri, July 20, 1806. Polygonum bistortioides Pursh. Polygonum near to bistorte. In moist grounds on Quamash flats, June 12, 1806. [Leaves and inflorescence]. Elaeagnus argentea Pursb. Silver tree of the Missouri. From the prairie of the Knobs. July 6, 1806. Shepherdia argentea Nutt. A. No. 39. Obtained at the mouth of the river Quicourre from which place upwards it is abundant; in the Missouri bot- toms it is a pleasant twig to eat. It has much the flavor of the cranberry, and continues on the bush through the winter. This is an evergreen shrub ; some plants are sent down by the barge to the care of Capt. Stoddard at St. Louis. From the mouth of the river Quicourre and from there upwards in all the Missouri bot- toms. The berry pleasant, acid like cranberry, and hang on all winter ; evergreen. Euphorbia heterophylla L. No. 38. 1804, Oct. 4. The growth of the high prairies or plains. High prairies and plains. Oct. 4, 1801. Euphorbia marginata Pursh. On the Yellowstone River, July 28, 1806. Pursh, Fl. 271. In low grounds on the banks of the Missouri, called Quamash-flats. M. Lewis. %. June, v.s. Pursh, Fl. 114. In the ex- tensive plains on the banks of the Missouri. M. Lewis and T. Nut- tall. \ . July, v. s. in Herb. Lewis. Missouri silver tree. Hippophce argentea Pursh, Fl. 115. On the banks of the Mis- souri. M. Lewis. \ v. s. in Herb. Lewis. E. cyathophora Pursh (not Willd.), Fl. 605. On the banks of the Mississippi, b • ©• June, July, v.v. Pursh, Fl. 607. On the Yel- lowstone River. M. Lewis. ©. July, v. s. in Herb. Lewis. 1898.] NATURAL SCIENCES OF PHILADELPHIA. 41 Madura aurantiaoa Nutt. [No label. Sterile specimen.] Betula ! Black alder of the Pacific Ocean ; grows to a large size. March 26, 1806. [Specimens consist only of fragmentary ster- ile catkins.]31 (Juercus Garryana Dougl. A sort of White Oak. Colum- bia, March 26, 1806. Quercus macrocarpa Michx. No. 34. The leaf of oak which is common to the prairies. 5th Sept., 1804. Common to the prairies, Sept. 5, 1804. 32 81 Alnus rubra Bongard. '' Black Alder of the Pacific Ocean, grows to a large size : March 26, 1806.'r The leaves and catkins have been wholly destroyed, except a portion of one male anient and the naked branch. But there is little doubt of the accuracy of the determination. The Journal says of it : " The Black Alder arrives to a great size It is simple branching and diffuse — the bark is smooth and of a light color, with white spreading shoots resembling those of the beech, the' leaf and fructification resemble precisely the common alder of our country. The shrubs grow separately from different roots, not in clusters like those of the United States. The Black Alder does not cast its leaves till December 1st. It is sometimes growing to the height of 60 or 70 feet, and from two to four feet in diameter.'' 32 Quercus macrocarpa var. depressa Engel. "The leaf of oak, which is common to the prairies, September 5, 1804." The Journal says : ' September 5th, when 4.} miles from White Point Creek, the Rapid River (now Niobrara) a beautiful plain on the upper side where the Pawnees once had a village, we camped just above it (now in South Dakota in the Pinca Reservation). The place where we halted is a fine low ground with much timber, such as Red Cedar, Honey Locust, Oak, Arrow- head, Elm and Coffee Nut." On September loth is again recorded, "our camp is in a beautiful plain (opposite what is now Brule City) with timber scattered thinly for | mile, consisting chiefly of Elm, Cottonwood, some Ash of indifferent quality, and a considerable quantity of a species of White Oak. This tree seldom rises higher than 30 feet, and branches very much. The bark is thick and of a light color. The leaves are small, deeply indented and of a light green. The cup which contains the acorn is fringed on the edges, and embraces it about one half. The acorn itself, which grows in great pro- fusion, is of excellent flavor, and has none of the roughness which most acorns possess These acorns are now falling, and have probably attracted the large number of deer which we saw in this place, as all the animals we have seen are fond of that food." The travellers were not botanists, but a specialist could not have drawn a better description of Quercus macrocarpa var. depressa^ The specimen in the collection has come through in excellent condition. 4 42 PROCEEDINGS OF THE ACADEMY OF [1898. Populus monilifera Ait. Cotton tree of the Mississippi and Missouri. Aug., 1806. Populus trichocarpa Torr. & Gray. Cotton tree of the Columbia River. June, 1806. P. angulata Pursh(not Willd.), Fl. 619. It is known by the name of Mississippi Cotton Tree. [Lewis'specimen not mentioned.] Calypso borealis Salisb. Pursh, Fl. 593. On the Col- Waters of Hungry Creek, umbia River. M. Lewis. %. Rocky Mountains. Junel6,1806. May, June, v. s. in Herb. Lewis. Iris Missouriensis Nutt. [So far as fragmentary speci- men shows.] A pale blue spe- cies of Flag. Prairie of the Knobs, July 5, 1806. Allium, sp. On the waters of the Koos- kooskee, Apr. 30, 1806. [Very poor sterile specimen.]3 133 Iris SibiricaPursh (not Willd.), Fl. 30. On the banks of the Mis- souri. M.Lewis. 11. July, v. v. ; v.s. in Herb. Lewis. [Perhaps a part of] A. angu- losum Willd. of Pursh, Fl. 223. On the banks of the Missouri. M. Lewis and Nuttall. 2/. July, v. s. in Herb. Lewis. Brodisea Douglasii Wats. £# grandiflora Pursh (not Hyacinth of the Columbia Smith), Fl. 223. On the plains plains, Apr. 20, 1806. [Good spe- of the Columbia and Missouri cimen. Watson's synon. wrong, Rivers. M. Lewis. % . Apr., May, Proc. Am. Acad, xiv, 238. v. v.34 Where Pursh's grandiflora is placed under laeta~\. 33 Allium sp. Pursh describes Allium angulosum I, p. 223, as '• on the banks of the Mis- souri, M. Lewis, July" The specimen in this collection is so eaten that neither flowers nor roots are left. As these remains are ticketed " on the waters of the Kooskooskee, April 30, 1806," it is probably of another species overlooked by Pursh, and not angulosum. So far as the leaves indicate, it may be A. reliculatum. 34 Described by Pur^h as Brodicea grandiflora Fl. I, p. 223. " Hyacinth of Colorado Plains, April 20, 1806." Pursh says : " on the plains of the Colum- bia and Missouri Rivers, M. Lewis, April and May. This elegant bulbous plant was called by M. Lewis rightly, Missouri Hyacinth." In the Journal of the expedition it is noted under date of April 16th, then at Rockfort camp, " a species of Hyacinth, a native of this place, bloomed to-day. It was not in bloom yesterday." 1898.] NATURAL SCIENCES OF PHILADELPHIA. 43 Calochortus elegans Pursh. A small bulb of a pleasant flavor ; eat by tbe natives. On the Kooskooskee, May 17, 1806. [Small specimen, 1 leaf and 1 flower. Specimen depauperate in manner of var. nanus, Wood, but petals obtusisli aud not cili- ate.] Camassia esculenta Lindl. Near the foot of the Rocky Mountains on the Quamash flats. June 23, 1806. [Good specimen]. Erythronium grandiflorum Pursh. A squamose bulb. On the waters of the Kooskooskee, June 5, 1806. [Indifferent specimen with one good flower and a poor leaf] Erythronium grandiflorum var. parvi- florum Wats. From the plains of the Col- umbia near Kooskooskee River, May 8, 1806. The natives reck- on the root unfit for food. [Three flowers and one leaf bearingstem. Probably the Missouri River specimen of E.laneeolatum Pursh, Fl. 230.] Pursh, Fl. 240. On the head- waters of the Kooskooskee. M. Lewis. % . May, v. s. in Herb. Lewis. The roots are eaten by the natives. Phalanglum Quamash Pursh, Fl. 226. On the upper part of the Missouri, near the Rocky Mountains. M. Lewis. 2/ . June v. s. in Herb. Lewis. 35 Pursh, Fl. 231. On the Koos- kooskee. M. Lewis. 11 ; May June, v.s. 13 Pursh says: "on the Upper Missouri near the Rocky Mountains, M. Lewis, June. The plant is known among the natives as Quamash, and the bulbs are carefully collected by them and baked between hot stones, when they assume the appearance of baked pears, and are of an agreeable sweet taste ; they form a great part of their winter stores. Though an agreeable food to Captain Lewis' party, they occasion baneful complaints if eaten in quantity." Under June 29, 1806, the Journal says : " the Quamash and strawberries are just beginning to bloom at the flats at the head of the Koos- kooskee." 44 PROCEEDINGS OF THE ACADEMY OF [1898. Fritillaria lanceolata Pursh. Specimen of a liliaceous plant obtained on Brant Island, 10th of April, 1806, the root of this plant is a squamous bulb and is eaten by the natives. The Clak- clel-lar, opposite this island, call it Tel-lak-thil-pah. [Complete specimen]. Fritillaria pudica Spreng. Plains of Columbia near the Kooskooskee, May 8, 1806. The bulb in the shape of a biscuit which the natives eat. [Com- plete specimen corresponding with Pursh's figure]. Trillium ovatum Pursh. Columbia River near the rap- ids, April 10, 1806. [Upper por- tion of plant]. Trillium petiolatum Pursh. Folium. The flowers brown with a fruit of brick-red. On the waters of the Kooskooskee. June 15, 1806. [Excellent specimen]. Veratrum viride Ait. or V. Californi- cum Dur. A plant growing in wet places with a single stem and leaves clasping round one another, no flowers observed. On the Koos- kooskee, June_25, 1806. [Single leaf only.] Xerophyllum tenax Nutt. The leaves are made use of by the natives to make baskets and other ornaments. On high land, Rocky Mountains, June 15, 1806. Pursh, Fl. 230. On the head- waters of the Missouri and Col- umbia. M. Lewis. %. July, v. s. Lilium f pudimm Pursh, Fl. 228, t. 8. On the headwaters of the Missouri. M. Lewis. 2/ . May, v. s. in Herb. Lewis. Pursh, Fl. 245. On the rap- ids of the Columbia River. M. Lewis. % . April, v. s. Pursh, Fl. 244. On the waters of the Kooskooskee. M. Lewis. %. June, v. s. Helonias tenax Pursh, Fl. 243. On high lands near the Rocky Mountains. M. Lewis. % . June, v. s. 1898.] NATURAL SCIENCES OF PHILADELPHIA. 45 Zygadenus elegans Pursh. On the Cokalaishkit River, July 7, 1806. Aira brevifolia Pursh. The most common grass through the plains of Columbia and near the Kooskooskee River, June 10, 1806. Poa trivialis L., var. [Fair specimen]. Hordeum jubatum L. Called the golden or silken rye. On the White Bear Islands on the Missouri, July 12, 1806. Hordeum jubatum L. Grass common to the open grounds near Fort Clatsop. March 13, 1806. Festuca ovina L. var. On the plains of Columbia. June 10, 1806. Agropyron divergens Nees. On the plains of the Columbia, June 10, 1806. (Determined by Prof. Scribner). Koeleria cristata Pers. On the plains of the Columbia, etc., June 10, 1806. Stipa spartea Trin. Valleys of the Missouri on the Rocky Mountain, July 8, 1806. {Stipa comata Trin. according to Prof. Scribner). Pursh, Fl. 241. On the waters of the Cokalaishkit River, near the Rocky Mountains. M. Lewis. % • July, v. s. in Herb. Lewis. Pursh, F1.76. In the plains of the Missouri. M. Lewis. % . June, July, v. s. iti Herb. Lewis. This grass is the most common in those plains.36 Pursh, Fl. 89. On the islands of the Missouri River. M. Lewis. $ . July, v. s. in Herb. Lewis and Lambert. Pursh, Fl. 1. c. Festuca duriuscula Pursh, Fl. 83? [but Lewis' specimen not mentioned]. Festuca spicata Pursh, Fl. 83. On the waters of the Missouri and Columbia Rivers, June, v. s. in Herb. Lewis. Pursh, Fl. 85. On the plains of the Columbia River. M. Lew- is. 11 . July, v. s. in Herb. Lewis. Stipa juncea Pursh, (not L.), Fl. 72. On the banks of the Mis- souri. M.Lewis. %. Aug. v.s. in Herb. Lewis. 38 This seems to be the plant described by Pursh as Aira brevifolia, as worked out by both Dr. Robinson and myself. But Professor Scribner, whose authority on grasses cannot be disputed, decides these specimens to be Poa tenuifolia Nutt., P. Buckleyana Nash. 46 PROCEEDINGS OF THE ACADEMY OF [1898. Zizania aquatica L. No. 59. 8th September, the growth of moist and very wet prairies. [Sterile specimen of a coarse grass. No label.] (Prof. Scrib- ner writes probably Spartina gracilis Trin.). Pinus ponderosa Dougl. On the Kooskooskee. On river bottoms in rich land, west of the mountains. Oct. 1, 1805. [Leaves only]. Juniperus communis L. No. 47. A species of Juniper common to the bluffs. Oct. 17. Common to the bluffs. Oct. 17, 1804. Juniperus communis L. var. alpina Gaud. Dwarf Juniper, Rocky Mount- ains, July 7, 1806. Juniperus occidentalis Hook. No. 58. Found 2d Oct. 1804. A species of cedar found on the bluffs, the trees of which are large, some of them 6 feet in the girth. On the bluffs, some trees 6 feet in girth. Oct. 2, 1804. Juniperus Sabina var. fim procumbens Pursh. Dwarf cedar, never more than 6 inches high, open prairies. Oct. 16, 1804. [Small sterile spe- cimen]. Juniperus communis L. var. depressa Pursh, Fl. 646. [Lewis' specimen not mentioned]. Juniperus excelsa Pursh (not Marshall von Bieb.), Fl. 647. On the banks of the waters of the Rocky Mountains. M.Lewis. \ . May, v. s. in Herb. Lewis. Pursh, Fl. 647. Within the Rocky Mountains. M. Lewis, h . v. s. in Herb. Lewis. Not above 6 inches high. 1898.] NATURAL SCIENCES OF PHILADELPHIA. 47 Equisetum arvense L. No. 31. Growth of the sand bank near the banks of the river, taken the 10th of Aug., 1804. Sand banks of the Missouri. Aug. 10, 1804. Aspidium spinulosum Sw. Poly podium species. Fort Clat- sop. June 20, 1806. Lomaria Spicant Desv. Fort Clatsop, June 20, 1806. Hypnum Oreganum Sull. A species of moss from Fort Clatsop. June 20, 1806. (Iden- tified by Mrs. Britton). Bazzania trilobata (L.) S. F. Gray. A moss used by the natives as a yellow dye ; grows on the pines of the Rocky Mountains. July 1, 1806. (Identified by Mrs. Britton). Egregia Menziesii (Turn.) Aresch. (Phyllospora Menziesii). Fucus. From the mouth of the Columbia River on the Pa- cific Ocean, Nov. 17, 1805. [Loose label with Pyrvs sam- bucifo Hits f but date different]. No. 24. Found the 4th day of Sept., 1805. A small growth only, rising to the height of 15 feet. Moist situations it seems to prefer; it is a handsome growth.37 Blechnum boreale Pursh (not Willd.), Fl. 669. On the north- west coast. M. Lewis. 11 . Aug. v. s. in Herb. Lewis. 87 Sorbus microcarpa Pursh. "On the tops of the highest peaks and mountains, June 27, 1806." Com- pletely eaten by insects, except the stem, pedicels and 2 leaflets. A label in the same sheet, in Captain Lewis' handwriting says, "found on the 4th day of September, 1805. A small growth, only rising to the height of 15 feet ; moist situations it seems to prefer. It is a handsome growth.'' 48 PROCEEDINGS OF THE ACADEMY OF [1898. [Label only]. The root not eaten by the natives. On the Columbia, April 14, 1806. [Sterile and unidentified. Stem lignescent, leaves opposite, narrow, linear, fascicled in axils]. A shrub about 4 feet high. On the plains of the Columbia. May 7, 1806. Identified while the mss. was going through the press, by Prof. Heller of the University of Minnesota, as Phlox speciosa Pursh. See Flora, P. 149. To the above detail by Dr. Robinson and Mr. Greenman, it may now be noted that this collection contains specimens of all but sixteen of Lewis's plants as described by Pursh in his Flora. Of these sixteen, seven, as marked with an asterisk, are represented already in the specimens from Lambert's herbarium, leaving but nine of the plants missing from the collection as described by Pursh. Only a few of these nine missing ones are of material importance. For all practical purposes, all the plants of Lewis and Clark's expedition are now deposited in the Academy. *Berberis Aquifolium Pursh. *Berberis nervosa Pursh. *Ceanothus sanguineus Pursh. Under the provisional name of " C. atropurpureus" *Psoralea esculenta Pursh. In the Journal of the expedition, under date of August 10th, it is noted " at the confluence of the Yellowstone with the Missouri, Captain Clark found to day * * the men also dug up large quantities of a large and very insipid root called by the Indians Hankee, and by the ' engages ' ' white apple.' It is used by them in a dry and powdered state, but our men boiled it and ate it with their meat." On the same sheet with Psoralea esculenta Pursh has fastened down a specimen of P. hypogoza Nutt., not noting its distinction. The ini- tials of Professor Britton are under it with this correction : It was evidently collected on the headwaters of the Platte, where Nuttall subsequently found it. 1898.] NATURAL SCIENCES OF PHILADELPHIA. 49 Spiraea capitata, Fl. 342. Described from a specimen of Menzies from the northwest coast, but of which he had said " an imperfect specimen gathered on the Columbia River" by Lewis is not in the collection, nor in the her- barium of the Academy, but is referred by Hooker to Neillia thyrsijiora, and frequently noted in the Journal of the explorers as " one of the Nine barks." Jussiaea subacaulis. PL, p. 304. Torrey and Gray, and Hooker refer this to Oenothera heterantha Nutt. A specimen in the collection of the Academy, simply marked " from Pursh's herbarium," is J. repens. As Pursh was evidently well acquainted with all our Jussiseas, it seems incredible that he should have mistaken an Oenothera for one of this genus. Symphoricarpos racemosus Mx. Menziesia empetriformis Pursh. No specimen here or in the herbarium of the Academy. Hooker supposes it to have been Cassiope Stelleriana, but Lewis reports his plant from the Rocky Mountains, and near the mouth of the Colum- bia River. Menziesia ferruginea Sni. " On the Columbia River, Lewis." June says Pursh. ®Erigeron compositus, Fl. 535. Pentstemon frutescens Lamb., Fl. 428. :;Gerardia fruticosa Pursh. In the herbarium of the Academy his specimen is marked " G. suffruticosa n. sp.," and has been placed by Dr. Gray on the sheet with Pentstemon Menziesii Hooker. Mimulus Lewisii Pursh, 427. Bartsia Gymnandra Pursh, 430. Dr. Gray suggests that Pursh's description indicates Synthyris rubra. *Diotis lanata, Fl. 602. Is in herbarium of the Academy under Eurotla lanata. Lilium umbellatum Fl., 229. Hooker (Index Kewensis) suggests this may have been L. Phil- adelphicum. Pinus taxifolia Lamb. FL, 640. Pseudo- Tsuga Douglasii. 50 PROCEEDINGS OF THE ACADEMY OF [1898. NEW AND LITTLE-KNOWN BEES FROM WASHINGTON STATE. BY T. D. A. COCKERELL. Halictus pacificus n. sp. 9 . — Length 10 mm., black, with ochreous pubescence, inclining to fulvous in very fresh examples, whitish in very faded ones; second, third and fourth segments of abdomen with interrupted basal bands, ochreous in color, of dense appressed hair, broad laterally, tapering to a point mesad ; in very worn examples these bands are practically obliterated. Head ordinary, cheeks unarmed, antennae wholly dark, tegular reddish-piceous ; wings with more or less of a yellowish tint, faintly dusky toward the apex ; subcostal nervure black, other nervures, and stigma, honey color; enclosure of meta- thorax semilunar, strongly radiately wrinkled, bounded by a tolerably distinct rim; legs black, small joints of tarsi ferruginous; abdomen with numerous very minute punctures, hair bands interrupted, apex with pale fuscous hair. S . — Differs in the usual manner from the 9 . Apical portion of clypeus yellow. Antennae long, flagellum, except the last two joints, ferruginous beneath. Pubescence paler ; nervures darker ; anterior tibia? in front, middle tibia? at apex, hind tibiae at both ends, and all the tarsi, yellow. Hab. — Olympia, Wash., March 23 to July 9, numerous speci- mens. (T. Kincaid). Also taken by Mr. Kincaid at Seattle, May 14th, on Rub us ursinus. The following table separates the females of various large Halicti allied to pacificus : A. Enclosure of metathorax granular. a. Large, with a broad face lerouxii Lep. b. Smaller, with a narrower face coriaceus Sm. B. Enclosure of methathorax plicate. a. Wings clear, stigma piceous, tegulae testaceous, sisymbrii Ckll. b. Wings yellowish, stigma honey-color, rather larger species . pacificus Ckll. The above four were all taken at Olympia. Three other species are allied to coriaceus : 1898.] NATURAL SCIENCES OF PHILADELPHIA. 51 1. H. bardus Cr., known by the clear wings and fuscous nervures. 2. H. politics Sm., from Mexico, with the face broader above, wings strongly yellowish. 3. H. forbesii Rob., having the clypeus less produced. 1 have examined a great number of coriaceus from Wash., and various specimens from New Mexico and Illinois, considered to be forbesii ; also an Illinois coriaceus from Mr. Robertson. The result of this study is that I believe all belong to one somewhat variable species. The characters given by Robertson to separate the females seem not to be constant, but I have not been able to compare the males. It is to be remarked, however, that Robertson's description of the metathoracic enclosure of forbesii, " bearing irregular radiating ruga?, which reach the posterior margin," will hardly apply to what I have (Tr. Am. Ent. Soc, 1897, p. 163) regarded as that species, so it may be that the real forbesii is a valid species near -pacificus, which I have not seen. In that case it will be separated from paci- ficus by the continuous abdominal bands, which are whitish instead of ochraceous. The following table separates some males which are more or less similar to pacificus : A. Clypeus wholly dark sisymbrii. B. Clypeus partly yellow. a. Legs all dark, size small angustior. b. Legs partly yellow. i. Hind tibia? black except ends, enclosure of metathorax plicate pacificus. ii. Hind tibia? yellow with only a suffused dark patch. a. Size large, rlagellum all dark, enclosure of metathorax irregularly wrinkled lerouxii. b. Size smaller, flagellum ferruginous beneath. 1. Size larger, head and thorax black .... ligatus. 2. Size smaller, head and thorax greenish . . fasciatus. Colletes pascoensis n. sp. $ . — Length 10 mm. or slightly over, black, with dull white pubescence having only a faint yellow or ochreous tinge. Face and thorax densely covered with long hair, cheeks with black hair, vertex shining but well punctured ; clypeus shining, with large close sub- lanceolate punctures ; distance between eye and base of mandible short, the space twice as broad as long; mandibles dark; antenna? wholly dark, reaching to tegula? ; mesothorax and scutellum shin- 52 PROCEEDINGS OF THE ACADEMY OF [1898. ing, with large well-separated punctures; postscutellum rough and dull ; base of metathorax pitted, shining, lateral faces tolerably shiny; tegulaj piceous ; wings dull hyaline, noticeably pubescent, nervures and stigma piceous ; stigma small, marginal cell appendi- culate; legs black, first two joints of hind tarsus rather broad; pubescence of femora yellowish-white, of tibia black, of tarsi black without and pale reddish-brown within ; abdomen shining, strongly but not very closely punctured, the hind-margins of the segments with rather thin yellowish-white hair-bands, the surface of the first two segments with long erect thin yellowish-white pubescence, that of the remaining segments with shorter black pubescence. 9 . — Much like that of armata in general appearance, but the pubescence of the head, pleura and legs is entirely black, contrasting with that of the thoracic dorsum, which is yellowish-white, not at all mixed with black. The abdomen has no bands, but is thinly clothed with rather short and inconspicuous hair, yellowish-white on the first segment, black on all the rest. The first segment has its lateral hind margins narrowly fringed with short dense white hair ; the punctures on the second segment are of two sizes, large and small. Antenna? dark, the flagellum with only the faintest chocolate tinge beneath, first joint of flagellum not quite as long as the second and third together. The second recurrent nervure is less bent than usual in the genus. Hab.—V-^co, Wash., 3 ? , 4 $ , May 25, 1896 (T. Kincaid). The females might be mistaken for some Andrena allied to vicina. C. pascoensis approaches nearest to the descriptions of C. californica and C. consors. From consors Cress., it differs in the pallid pubescence and the black hair as described ; this relates to the $ , the 9 of consors being unknown. From californica Prov., it differs by the entirely black hair of the head and legs in the 9 . It may be added, that pascoensis is also decidedly larger than consors or californica. Colletes kincaidii n. sp. 9 . — Length aboutl3 mm., black, with clear fulvous pubescenceon head and thorax, tolerably dense, nowhere mixed with black, becom- ing whitish on the ventral surface. Head rather broad, vertex with irregularly-placed punctures of various sizes, clypeus with the punctures running into strise, labrum with conspicuous grooves alternating with ridges, mandibles dark, space between eye and base of mandible broader than long, antennae very short, wholly black ; prothoracic spire short, hidden by the pubescence ; meso- 1898.] NATURAL SCIENCES OF PHILADELPHIA. 53 thorax with very large and close punctures, except a large area in the middle, which is shining and impunctate; scutellum with large punctures, except the anterior border, which is impunctate; post- scutellum roughened ; basal enclosure of metathorax bounded by a distinct rim, shining, with about sixteen strong ridges ; lateral faces dullish, the triangle shining; tegulse dark brown; wings hyaline, nervures and stigma black, stigma small, marginal cell appendicu- late, second recurrent nervure considerably bent; second submar- ginal cell extremely broad, larger than the third; legs black, with yellowish-white, almost silvery, pubescence ; pubescence on inner side of hind tarsi yellowish-white, except that the first-three joints are tipped with shining orange-fulvous ; abdomen lanceolate, shining ; first two segments very strongly punctured, the punctures on the second smaller and closer than on the first; remaining segments with minute inconspicuous punctures, and a more sericeous surface ; hind margins of the segments with broad oppressed white hair-bands, all very con- spicuous, that on the first more or less interrupted in the middle ; some inconspicuous short black hair on the dorsum of the third to fifth segments, and on the apex. $ . — 10? mm. long. Similar to the ? , but more slender. Face much more narrowed below; antennae long, wholly black; space between eye and base of mandible somewhat larger, but still broader than long ; thoracic pubescence rather more highly colored ; hair- baud on first abdominal segment entire. Hab. — Olympia, Wash., July 5, 1896, at flowers of Potentilla palusiris; also June 30th, at flowers of lupine. A large and hand- some species, but closely similar to several others. C. incequalis differs at once in the 9 , but the S is quite like our insect, being however larger, with a longer stigma, and the face less narrowed below. C. simulans (known only in the S ) is smaller «than kincaidii, and has the abdomen uniformily punctured. C. gilensis has black hair on the thoracic dorsum. C. compacta has quite a different metathorax. C. aestivalis differs by the brown stigma, the much narrower second submarginal cell, the more parallel orbits, the much smaller punctures of the mesothorax, the very dark tegulre, the stronger punctuation of the third abdominal segment, and the pale fulvous hair on the apical segment. The aestivalis compared is an Illinois example from Mr. Robertson. 54 PROCEEDINGS OF THE ACADEMY OF [1898. I am surprised to find, on re examining the specimens, that the species found by Prof. Wooton on Ruidoso Creek in New Mexico, and recorded by me (An. Mag. Nat. Hist., Jan., 1897, p. 49) as aestivalis, is in reality C. kincaidii. Habropoda floridana (Smith) var. n. pascoensis. 9 . — Length about 16 mm., differs from Smith's description in that the pubescence of the head is pale, mixed, however with black on the face and vertex, the wings are little darkened, and the pubes- cence at the sides of the end of the abdomen is shining white. The pubescence of the thorax and of the first abdominal segment is very bright orange fulvous, not at all mixed with black. The short pubescence immediately surrounding the pygidial plate is black. Tegulre black. Pubescence of legs black ; that on inner side of front tarsi orange-rufous, the brushes at the ends of the segments tipped with brilliant coppery-red. Hair on lower part of pleura black. Hub.— Pasco, Wash., May 25, 1896, (T. Kincaid). It is just pos- sible that this is the unknown 9 of H. morrisoni Cresson. It has a superficial resemblance to Podalirius ursinus. Podalirius crotchii (Cresson). $ . — From Pasco, Wash., May 25, 1896 (T. Kincaid) agrees with Cresson's description. Hitherto the species has only been reported from California. The pubescence on the hind tarsi within is brilliant fulvous. Podalirius syringse n. sp. $ . — Length about 12 mm., black, pubescence long and erect, not very dense, mouse-color; strongly mixed with black on hind two- thirds of mesothorax, and anterior margin of scutellum ; black also on vertex and upper part of cheeks, mixed with black on front and more or less on sides of face ; pubescence of abdomen long, thin and pale at base of first and sides of first-three segments, dorsally from the third segment onward scanty and black, some pale hairs at the extreme apex ; no hair-bauds. Clypeus except the black anterior edge, a supraclypeal band, irregularly v shaped lateral marks, and labrum except the anterior margin and upper lateral corners, all lemon-yellow. Mandibles and the quite long antennae wholly black. Mesothorax dull, with numerous shallow punctures, two small im- punctate central areas. Metathorax shining. Legs slender, ante- rior and middle trochanters, and upper half of anterior femora be- 1898.] NATURAL SCIENCES OF PHILADELPHIA. 55 hind, with shining white hair ; otherwise the pubescence of the femora, as of the tibia?, is black. Tarsi with partly black and partly pale hair, that on the inner side of the first four tarsi shining ferru- ginous; small joints of tarsi a lively ferruginous. Teguloe black or piceous. Wings dusky hyaline. Apex of abdomen bidentate. Hab. — Olympia, Wash., July 3rd, at flowers of Syringa; also June 27th, (T. Kincaid). Nearest to P. simillimus (Cress.), but differs by the wholly black scape and the distribution of the pubes- cence. Megaohile calogaster n. sp. $. — Length 1 1—12 J mm., stoutly built, black, with pubescence varying from pale ochraceousto whitish, not dense enough on thorax to conceal the surface, some short black hair on cheeks just behind eyes, and a good deal on the middle of the mesothorax. Head ordinary ; a conspicuous patch of white hair on lower part of cheek ; face quite densely clothed with yellowish-white hair ; vertex strongly punctured, as also the clypeus ; antennas wholly dark, last joint oval and flattened ; mandibles black, elbowed without, tridentate ; thorax strongly and closely punctured ; anterior coxce with a large rather broad and blunt spire, above which is a transverse patch of the most brilliant orange-rufous pubescence; anterior femora stout, sub- trigonal, ferruginous with a black patch at base and apex within, the latter connecting with a broad black external stripe extending the whole length of the femur ; under side of anterior femur with long snow-white pubescence; anterior tibia short and thick, black without, mostly ferruginous within, a large apical triangular patch without pale yellow, apex with a blunt pale yellowish tooth extend- ing at right angles to the axis; anterior tarsi pale yellow, tinged with ferruginous toward the end; first joint hollowed, produced at the end, but not extending as far as tip of second joint ; second and third joints broadened, and elongated at one side; anterior tarsi behind fringed with long white hair ; middle and hind legs entirely black, their femora and tibiae with scanty whitish pubescence, partly black on hind legs, their tarsi with shining orange-fulvous hair; claws with the basal half ferruginous, the apical half black ; tegulaa black, punctured ; wings tinged with fuliginous, nervures black, marginal cell quite long and narrow ; abdomen short and convex, without any hair bands, but having rather long thin pubescence, nowhere con- cealing the surface, grayish-white or pale ochreous on the first two 56 PROCEEDINGS OF THE ACADEMY OF [1898. segments, nearly all black on the rest ; apex with a broad semicir- cular emargination ; three large subapical ventral teeth. 9 . — About 14 mm. long; similar to the $ , except in the usual sexual characters. Legs black, with black pubescence ; that on the inner side of the front and hind tarsi, and both sides of the middle tarsi, lively ferruginous; pubescence of cheeks all black; ventral scop>a dense, black only to a slight extent at base, otherwise very bril- liant orange-fulvous. Hab. — Olympia, Wash., June 30th, at flowers of lupine; also June 19th to July 4th (T. Kincaid). A distinct and handsome species. Sphecodes kincaidii n. sp. 9 . — Length 12 mm., the abdomen quite elongated with approxim- ately parallel sides. Head and thorax black, abdomen entirely bright ferruginous ; head transversely oval, front dull and very coarsely rugose, clypeus subcancellate with strong punctures; pubescence of face dirty whitish; antennce wholly dark; first joint of flagellum very short, broader than long; mandibles dark, only rufescent at the extreme tip, inner tooth short and blunt ; labrum not emargin- ate ; mesothorax nearly bare, shining, with large strong punctures ; base of metathorax coarsely cancellate, enclosed by a rim; tegular brown ; wings rather pale fulginous, nervures and stigma piceous, stigma considerably larger than in S. dichrous, first recurrent nervure joining second submarginal cell before its end ; legs black, hind tarsi entirely ferruginous ; abdomen smooth and shining, with small sparse punctures, first two segments appearing nearly impunctate, with a very few large punctures and more numerous very minute ones. The third segment is much more punctate than the second. Apex with some dark hair. #a&.— Olympia, Wash., June 19, 1895 (T. Kincaid). Easily known by the large size, and the narrow elongate sparsely punctured abdomen. It is not likely, I think, that it is the unknown 9 of S. davisii Rob. S. dichrous Sm., also occurs at Olympia. 1898.] NATURAL SCIENCES OF PHILADELPHIA. 57 SYNOPSIS OF THE RECENT AND TERTIARY PSAMMOBIIDJE OF NORTH AMERICA. BY W. H. DALL. Family PSAMMOBIID^J. Genus PSAMMOBIA Lamarck. (—Psammobia (Lara., 1818) Bowdich, 1822; + Gari (pars) Schumacher, 1817; -f- Haplomochlia Gistel, 1848 (fide Morch, 1852). Not Psammobia Cossman, 1886). Type P. (Tdlina) feromsis Gmelin, 1792, = T. gari Lin., 1762, not of Lin., 1758. North European Seas. Section Psamniobia s. s. 1. Psammobia (sp. indet.). 880 fms. east of Tobago ; U. S. Fish Commission. A worn frag- ment of undeterminable species. Section Grammatomya Dall, 1897. Wholly obliquely grooved, with no dorsal posterior area. 2. Psammobia squamosa Lain. Virgin Islands (Krebs). Subgenus GOBRiEUS Leach. (— Solen Megerle, 1811, not Lin. 1758 ; -j- Psammobia Blainv., 1825, not (Lam., 1818) Bowdich, 1822 ; -f Sanguinolaria Blain- ville, 1825, not Lamarck. 1799 ; + Azor Gray, 1851 (Brit. An., p. 51, not p. 62) ; -f- GobrcBUS (Leach MS.) Gray, 1852; -f Psammo- cola sp., Blainv., 1825. Type Psammobia vespertina Lam. Eu- ropean Seas. 3. Gobraeus vaginatus Reeve. Charlotte Harbor, Florida (?). 4. Gobraeus circe Morch. Tortola and St. Thomas, West Indies. * * * 5. Gobraeus maximus Deshayes. Panama to the Gulf of California. 6. Gobraeus regularis Carpenter. Gulf of California. 5 58 PROCEEDINGS OF THE ACADEMY OF [1898. 7. Gobrseus californicus Conrad. Sitka to San Diego, California, also Kamtchatka (Dall) and Japan. 8. Gobrseus fucatus Hinds. Magdalena Bay, Lower California. 9. Gobrseus edentulus Gabb. 60 fms., San Pedro, California. Genus SANGUINOLARIA Lamarck. (= Sanguinolaria Lam., 1799, not Blainv., 1825, nor Desh., 1835; -f- Aulus (sp.) Oken, 1815, not Oken, 1821; + Lobaria Schum., 1817, not Muller, 1776; + Hiatula sp. Modeer, 1793). Type S. (Solen) sanguinolentus Gmelin, Antilles. Section Sanguinolaria s. s. 1. Sanguinolaria sanguinolenta Gmelin. Antilles to Brazil ; Ceylon. 2. Sanguinolaria tellinoides A. Adams. Gulf of California to Panama. Section Psammotella Blainville. (Psammotelle Blainv., 1826; -f- Psammotella Herrm., 1852). 3. Sanguinolaria operculata Gmelin. Texas to Brazil. (Type species). 4. Sanguinolaria hanleyi Bertin. Lower California to Panama. 5. Sanguinolaria vitrea Deshayes. Texas to Colon. Section Nuttallia Dall, 1897. Inequivalve, suborbicular. 6. Sanguinolaria nuttallii Conrad. Southern California and Japan. (Type species). Genus AMPHICH.ENA Philippi. (= Amphichcena Phil., 1847, not H. & A. Ads., 1856 ; -|- Am- phidona Morch, 1858). Sole species known. 1. Amphichaena kindermannii Phil. Mazatlan. 1898.] NATURAL SCIENCES OF PHILADELPHIA. 59 Genus HETERODONAX Morch. (= Heterodonax Morch, 1853 ; + Arcopagia Orb., 1863, not Brown ex Leach MS., 1827). 1. Heterodonax bimaculata Lin. Florida to Brazil on the Atlantic ; San Diego, California, to Pan- ama, on the Pacific Coast. Genus ASAPHIS Modeer. (= Asaphis Modeer, 1793 ; + Capsa Lam., 1801, not Lam., 1799 ; + Capsula Schum., 1817, not Sby., 1857 ; + Psammocola (pars) Blainv., 1825 ; -f Isarcha Gistel, 1848, fide Morch, 1852 ; -f- Sanguinolaria Desh., 1835, not Lam., 1799; -f- Pliorhytis Con- rad, 1863). Type Asaphis {Venus) defiorata Linn. Indo- Pacific. 1. Asaphis coccinea Martyn, 1784. Charlotte Harbor, Florida, to Brazil. (Heteroglypta von Martens, 1880, will form a section of Asaphis, characterized by divaricate sculpture. Type Psammobia contraria Desh., Isle Bourbon). Genus TAGELUS Gray. (= Tagelus Grav, 1847 ; + Siliquaria Schum., 1817, not Lam., 1801 ; + Solecurtus Orb., 1853, not of Blainv., 1825 ; + Cultellus sp., Conrad, 1845 ; -\- Mesopleura Conrad, 1867 ; -f Tagelus Fischer, 1887 ; + Psammosolen Hupe, 1848, not Bronn, 1831). Type T. (Solen) gibbus Spengler, 1794. Section Tagelus ss. 1. Tagelus gibbus Spengler. Cape Cod to Brazil, and coast of West Africa. 2. Tagelus violascens Carpenter. Gulf of California to Nicaragua. 3. Tagelus californianus Conrad. San Pedro, California, to Lower California. 4. Tagelus affinis C. B. Adams. Sta. Barbara to Panama. Section Mesopleura Conrad. 5. Tagelus divisus Spengler. Cape Cod to Venezuela. 6. Tagelus politus Carpenter. San Pedro to Panama. 60 PROCEEDINGS OF THE ACADEMY OF [1898. 7. Tagelus subteres Conrad. Southern California to Lower California. FOSSIL SPECIES OF THE TERTIARY. Eocene. Psammobia (Gobrceus) ozarkana Harris. Chickasawan. Psammobia (Garum) jilosa Conrad. Claibornian. Psammobia (Garum) claibornensis Dall. Claibornian. Psammobia (Gobrceus) blainvillei (Lea). Claibornian. Psammobia (Gobrceus) hornii (Gabb). Tejon. Psammobia (Gobrceus) papyria Conrad. Jacksonian, Vicksburg- ian and Chipolan. Psammobia (Gobrceus) lintea Conrad. Vicksburgian. Miocene. Asaphis centenaria Conrad. Chesapeake. Pliocene. Psammobia (Gobrieus) wagneri Dall. Caloosahatchie and Wac- camaw beds. Psammobia (Gobrams) edentula (Gabb). Californian. Tagelus gibbus Spengler. Caloosahatchie beds, and also Pleisto- cene of South Carolina. Tagelus divisus Spengler. Caloosahatchie beds, and also Pleisto- cene of South Carolina. The other North American fossil species referred to Psammobia, Psammocola, Sanguinolaria, Solecurtus, Siliquaria, etc., belong in other genera or are synonyms of the cited species. SYNONYMS AND CORRECTIONS. Capsa deflorata Orb. — Asaphis eoccinea (Mart.) Morch. Cultellus californianus Conrad, = Tagelus californianus. Gultellus caribcms Conrad, 1845, = Mocha sp. Cultellus subteres Conrad, — Tagelus subteres. Leguminaria floridana Conrad, = Tagelus divisus Spgl. Mesopleura bidentata Conrad, = Tagelus divisus. Petricola centenaria Conrad, = Asaphis centenaria. Psammobia affinis C. B. Adams, = Heterodonax bimaculata. Psammobia biradiata C. B. Adams, = Heterodonax bimaculata. Psammobia casta (Desh.) Reeve, — Macoma cognata C. B. Ads. Psammobia cayennensis Lam., = Macoma constricta. 1898.] NATURAL SCIENCES OF PHILADELPHIA. 61 Psammobia cerina C. B. Adams, = Macoma cerina. Psammobia constricta Lam., = Macoma constricta. Psammobia declivis Turton, = Tagelus gib bus Spengler. Psammobia decora Hinds, = Sanguinolaria nuttallii Conrad. Psammobia lusoria Say, = Macoma lusoria. Psammobia pacifica Conrad, = Heterodonax bimaculata. Psammobia purpureo-maculata C. B. Adams, = Heterodonax bi- maculata. Psammobia rosea Deshayes, = Sanguinolaria sanguinolenta. Psammobia rugosa Sby., = Asaphis coccinea. Psaynmobia rubroradiata Cpr., (1863), = P. californica Conrad, (Proc. Acad. Nat. Sci. Phila., 1848, p. 121). Psammobia tozniata Turton, = Tagelus divisus. Psammocola lucinoides H. C. Lea, = f Diplodonta sp. Psammocola pleiocena T. & H., = Asaphis centenaria. Psammocola regia H. C. Lea, = Asaphis centenaria. Psammocola rugosa Blainv., = Asaphis coccinea. Sanguinolaria californiana Conrad, = Macoma sp. Sanguinolaria fusca Say, = Macoma fusca. Sanguinolaria miniata Gould, = S. tellinoides A. Ads. Sanguinolaria ovalis (Desh.) Reeve, = S. tellinoides junior. Sanguinolaria purpurea (Desh.) Reeve, = S. tellinoides. Sanguinolaria rufescens Chemn., = S. operculata Gmel. Siliquaria caribcea Holmes, = Tagelus gibbus. Siliquaria carolinensis Conrad, = Tagelus sp. indet. Siliquaria edentula Gabb, = Psammobia edentula. Siliquaria equalis Conrad, = Tagelus sp. Siliquaria gibba A. Adams, = Tagelus gibbus. Siliquaria notata Schumacher, = Tagelus gibbus. Solecurtus angulatus Sby., = Tagelus gibbus. Solecurtus bideus Forbes & Hanley, — Tagelus divisus. Solecurtus californianus Carpenter, = Tagelus calif ornianus. Solecurtus caribceus Blainville, = Tagelus gibbus. Solecurtus centralis Sowerby, = Tagelus gibbus. Solecurtus cylindricus Sowerby, = Tagelus affinis. Solecurtus fragilis Conrad, = Tagelus divisus. Solecurtus subteres Emmons, = Siliquaria equalis Conrad. Solecurtus subteres Conrad, = Tagelus subteres. Solecurtus violascens Sowerby, = Tagelus violascens Cpr. Solen adansonii Bosc, = Tagelus guineensis. 62 PROCEEDINGS OF THE ACADEMY OF [1898. Solen bidens Chemnitz, = Tagelus divisus. Solen carpenteri Dunker, = Tagelus divisus. Solen centralis Say, = Tagelus divistcs. Solen fragilis Pulteney, = Tagelus divisus. Tellina fucata Hinds, = Psammobia fucata. Tellina fucata Gould, = Strigilla fucata. Tellina rufescens Chemnitz, = Sanguinolaria operculata Gmel. Tellina rufescens Roemer, = Sanguinolaria hanleyi Bertin. Tellina semiplanata Spengler, = Sanguinolaria operculata Gme- lin. Tellina vicina C. B. Adams, = Heterodonax bimaeulata. 1898.] NATURAL SCIENCES OF PHILADELPHIA. 63 THE GERRHONOTUS OF THE SAN LUCAN FAUNA, LOWER CALIFORNIA, WITH DIAGNOSIS OF OTHER WEST AMERICAN SPECIES. BY JOHN VAN DENBURGH. A little more than two years ago, in a consideration of the rep- tiles of Lower California,1 I said that " Without larger series of the other species than are at hand, the status of the Gerrhonoti from the 'Cape Region ' of Lower California cannot be satisfactorily deter- mined. It seems probable, however, that they are distinct from the more northern G. scincicauda, and are referable to the name G. multicarinatus Blainv." More recently2 I have been able to ex- amine large numbers of specimens of the four species of this genus which are known to occur in California, Oregon and Washington, and to discover more or less definite limits to their variation. I wish now to consider the status of the Lower Californian form.3 At first glance the lower Californian lizard bears a resemblance to Gerrhonotus principis of the Puget Fauna. This, however, is merely a superficial resemblance due to the comparative smoothness of these two forms, and in a less degree to their similar size and the occasional absence of complete dorsal color bands in the San Lucan species. In the number of the longitudinal rows of its dorsal scales this Gerrhonotus is similar to G. pahneri and G. burnettii. In other characters, however, it approaches Gerrhonotus scincicauda, to which I believe it is most closely related. The following table shows the variation in the several species of those characters which seem to be of value in classification. The figures indicate the number of specimens examined. From this table we may formulate a key which will serve to identify most specimens : 1 Proc. Cal Acad. Sci. (2), V, 1895, p. 119. J Occasional Papers, Cal. Acad. Sci., V, 1897, pp. 102-115. s In making this comparison I have had twenty six specimens from San Jose del Cabo, Sierra El Taste, Sierra San Lazaro, Sierra Laguna and Mira- flores. 64 PROCEEDINGS OF THE ACADEMY OF [1898. princi- pis. burn- eltii. palmeri multica- rinatus. scinci- cauda. Dark lines along middle of ven- tral scales, Dark lines between ventral scales, .... Ventral dark lines absent, 17 10 60 17 2 14 26 91 2 Azygous prefontal large, Azygous prefrontal moderate, Azygous prefontal small, . 1 10 16 7 26 41 17 1 26 89 4 A single interoccipital, Two to four interoccipitals, No interoccipital, 4 23 8 71 1 15 1 26 84 8 1 Scale rows, 12f, . Scale rows, 14, . Scale rows, 14|, . Scale rows, 15k, . Scale rows, 16, . Scale rows, 18, . 19 8 5 71 1 1 17 3 2 20 3 87 3 KEY TO SPECIES. a. — Dark ventral lines between the longitudinal rows of scales or absent, b. — Dorsal scales weakly keeled, in fourteen (rarely 14|) lon- gitudinal rows. G. principis. b2. — Dorsal scales strongly keeled, in sixteen (rarely 14f or 18) longitudinal rows. c. — Temporal scales smooth. G. burnettii. c2. — Lower temporal scales keeled. G. palmeri. a2. — Dark ventral lines along middle of longitudinal scale rows. d. — Dorsal scales weekly keeled, in sixteen (rarely 14 or 14 1) longitudinal rows. G. multicar hiatus. d2. — Dorsal scales strongly keeled, in fourteen (rarely 12f or 14?) longitudinal rows. G. scincicauda. 1898.] NATURAL SCIENCES OF PHILADELPHIA. 65 Brief characterizations of these five species may prove useful : — Gerrhonotus principis. Lower temporal scales smooth ; dorsal and caudal scales weakly- keeled ; dorsals in fourteen (or 14§) longitudinal rows; dark ventral lines between the longitudinal rows of scales, or absent ; azygous prefontal of moderate size or small; interoccipitals two or three (or 1) ; back without complete dark cross-bands. Gerrhonotus burnettii. Lower temporal scales smooth ; dorsal and caudal scales strongly keeled; dorsals in sixteen (rarely 15J or 18) longitudinal rows; dark ventral lines between the longitudinal rows of scales, or absent; azygous prefontal usually small or of moderate size; inter- occipitals two to four (rarely 1) ; dorsal color bands usually broken and closer than in G. scincicauda. Gerrhonotus palmeri. Temporal scales keeled ; dorsal and caudal scales strongly keeled ; dorsals in sixteen longitudinal rows ; dark ventral lines absent (or between the longitudinal rows of scales) ; azygous prefrontal large ; interoccipital normally single ; back without complete dark cross' bands. Gerrhonotus multicarinatus. Lower temporal scales smooth ; dorsal and caudal scales weakly keeled; dorsals in sixteen (rarely 14 or 14H) longitudinal rows; dark lines along the middle of each of the longitudinal rows of ventral scales ; azygous prefrontal large ; interoccipital normally single ; back with or without complete dark cross-bars. Gerrhonotus scincicauda. Lower temporal scales smooth ; dorsal and caudal scales strongly keeled; dorsals in fourteen (rarely 12| or 14|) longitudinal rows; dark lines along the middle of each of the longitudinal rows of ventral scales (very rarely absent) ; azygous prefrontal large (rarely moderate-sized); interoccipital usually single; back usually with complete dark cross-bands. Principis (B. & G.) finds its home in the Puget Fauna of western Washington and Oregon, and perhaps occurs in the mountains of northern California. G. burnettii Gray occupies a narrow strip along the coast of California from Monterey to Mendocino County. G. palmeri (Stejneger) is native to the western slope of the Sierra 66 PROCEEDINGS OF THE ACADEMY OF [1898. Nevada of El Dorado, Tuolumne, Mariposa, Fresno and Tulare Counties, California, between the altitudes of 3,700 and 9,000 feet. G. multicarinatus (Blainville) appears to be confined to the San Lucan Fauna of Lower California. G. scincicauda (Skilton) has been found in northwestern Lower California, in the San Diegan^ Californian and Pacific Faunse of California, in western Oregon and in Washington, its range overlapping those of G. burnettii, G.pal- meri and, probably, G. principis. The probable relationship of these species may be indicated thus: — 1898.] NATURAL SCIENCES OF PHILADELPHIA. 67 4 ANATOMICAL NOTES ON CERTAIN WEST AMERICAN HELICES. by h. a. pilsbry and e. g. vanatta.1 The genus Glyptostoma. This genus has very distinct conchological features, the shell re- calling the typical Zonites in form. The jaw, radula and genitalia have been investigated and figured by W. G. Binney. From these data the senior writer placed Glyptostoma in the group Belo- gona Euadenia of the arrangement of Helices given in volume IX of the Manual of Conchology, near the genus Epiphragniophora. We have now examined two specimens of G. Newberryanum. The genital system of one is figured on PI. I, fig. 1. The two examples dis- sected agree perfectly in all details, but in several points do not correspond with Binney's figures. The right eye is retracted be- tween $ and 9 branches of the genitalia. The penis is continued a short distance beyond the insertion of the vas deferens, and may be regarded as having a rudimentary epiphallus, the long retractor inserted thereon distally. There is no trace of a flagellum. Vagina long, at its apex the very long duct of the spermatheca enters. This duct is of the length of the uterus and terminates in a large globular spermatheca. No diverticulum. At the point where the sp. d. enters, an ovate sessile body is placed. This has the shining, fleshy muscular substance commonly seen in dart sacks ; and we do not doubt that the organ is of that nature, although no dart was found in either of the two individuals dissected. The lumen presented several broad folds, and no distinct apical papilla. There is no trace of mucus glands. The talon is unusually long. From these characters it appears that the genus, while probably belonging with the series of American dart-bearing Helices, is extremely isolated. The other American genera, Epiphragmoph- 1 The dissections and drawings of all species noticed in this paper are by Mr. Vanatta, who is also responsible for all anatomical details of the several forms. The more general discussions relating to the systematic bearings of the facts developed are by Mr. Pilsbry. We would here acknowledge our indebtedness to Professor W. H. Dall for alcoholic specimens of several of the forms discussed below. 68 PROCEEDINGS OF THE ACADEMY OF [1898. ora, Lysinoe, Leptarionta, Cepolis, and Polymita are all more nearly allied to each other than to Ghjptostoma? The lack of mucus glands is a degenerative feature unique in Be- logona Euadenia, though it occurs in the Belogona Siphonadenia. The high insertion of the dart sack is very unusual. The talon is longer than in any other Helix known to us. The loss of a flagellum on the penis is unique among American Euadenioz, but occurs in certain Chinese forms of Eulota and in many other Old World groups. It is not usually a character of generic importance in Helices. The Micrarionta group of Epiphragmophora. Micrarionta was proposed by Mr. C. F. Ancey as a subgenus of Helix, based mainly, it would seem, upon the small size of the shell and reflexed lip of its type, H. facta. In the " Guide to the Study of Helices" the group was expanded to include the larger, simple- lipped Lower Californian Helices which Binney (following von Martens) referred to Euparypha; and it was shown to have well marked anatomical features unlike any other known group of Helices. The three subgeneric groups iuto which our West Coast Epiphr- agmophoras were divided in the " Guide," — Micrarionta, Helmintho- glypta and Monadenia, — differ trenchantly in the forms of their mucus glands. In the first they are inserted by two separate ducts at the base of, rather than upon, the dart sack. In the second a single duct enters the dart sack, and splits into two bulbiferous branches above. In the third there is a single club-shaped gland. The other characters of the soft anatomy, as well as the shells, are not very unlike in the three groups. Of the eleven species of Micrarionta, E. intercisa and E. levis are unknown anatomically. E. Gabbi, rvficincta, intercisa, Kelletti and Tryoni are known to us by W. G. Binney's figures, but several char- acters being unnoticed by Binney, a reexamination of these is desir- able. We have dissected E. areolata, Pandorce, Veitchii, Stearnsiana and Guadalupiana. E. Guadalupiana Dall, PI. I, fig. 11 (genitalia) differs consider- ably from the other species examined. The flagellum is but little 2 Leptarionta is hardly sufficiently known to be included in this statement. It should be stated that the shell characters of Glyptostoma are also notably different from any of the other genera named. 1898.] NATURAL SCIENCES OF PHILADELPHIA. 69 longer than the penis and epiphallus taken together. The sperma- theea duct bears no diverticulum. The dart sack is degenerate, reduced to a small wide bud, one mucus gland arising at its right side, descending, club shaped, the other at left side, ascending and slightly sacculated ; both entirely free, not bound to the vagina. The right eye-retractor passes to the left of the genital system, not between its branches. The last characters may be expected to occur in E. facta and rufieincta. It is a very unusual feature. The subobsolete condition of the dart sack is unlike any allied species. The measurements are: length of penis+epiphallus 9 mm.; of flagellum 10; of sper- matheca duct 15 mm. The other forms examined have the flagellum very long, dart sack well developed, one of the mucus glands descending, spread upon the base of vagina, the other upon the dart sack, both bound down. Diverticulum developed and long except in Stearnsiana. In all, the spermatheca arises high, near the distal end of the vagina. The dimensions of the parts are as follows : Pandoras. Veitchii. Areolata. Stearnsiana. Length of penis+epiphallus 15 35 28 22 28 mm. Length of flagellum 21 67 50 26 27 mm. Length of spermatheca duct 17j 54 49 43 35 mm. Length of diverticulum 13 43 25 0 1mm. Thrown into the form of an analytical key, the genital characters give these results: a. Right eye retractor passing between $ and 9 branches of geni- talia ; diverticulum presents one mucus gland spread upon and firmly bound to vagina below dart sack. b. Flagellum and spermatheca duct of about equal length, areolata. bb. Flagellum longer than spermatheca duct ; diverticulum f to I length of spermatheca duct, much longer than the other branch. c. Penis-j-epiphallus J length of flagellum . . . Pandora. cc. Penis+epiphallus about i length of flagellum . Veitchii. bbb. Flagellum shorter than spermatheca duct ; diverticulum very short or wanting Stearnsiana. aa. Right eye retractor not passing between branches of genitalia ; mucus glands free; no diverticulum ; flagellum about the same length as penis+epij)hallus. b. Dart sack degenerate, very small Guadalupia'na. 70 PROCEEDINGS OF THE ACADEMY OF [1898. No further details of the genitalia are needed except such as are clearly shown in the figures; and of course some variation in the absolute dimensions of various organs is to be expected. Details are lacking to intercalate the other species of the sub- genus in the above synopsis, but from Binney's figures it seems that E. Kelletti and Tryoni fall into § bb. of the first division (a.) of this dichotomous table, and it is likely that E. ruficincta and facta group in the second division, aa. They differ from E. Guadalupiana Dall in having the dart sack well developed. The position of the eye retractor muscle is unknown. Neither of them has a diverticulum on the spermatheca duct. E.Stearnsiuna differs considerably from areolata, Pandorce, Veitchii and, according to Binney's figures, Kelletti, in having the diverticulum short or obsolete. Two specimens were dissected, both from Coro- nado Islands. In one (66,091 A. N. S. P. Mus., coll. by A. W. Anthony) there is no trace of a diverticulum. In the other (69,014, from Prof. W. H. Dall) there is a very short diverticulum, about 1 mm. long, arising slightly beyond the lower fourth of the length of spermatheca duct. In this specimen the duct is 8 mm. shorter than in the other. Binney's figure shows a somewhat longer diver- ticulum than our No. 69,014, but it is still very short. This variation in the diverticulum is exactly paralleled in the European Helix pomatia. EXPLANATION OF PLATE I. Note. — The shells of the specimens furnishing the genitalia figured, as well as the dissections, may be found in the collection of the Academy bearing numbers corresponding to those given below. (Div., diverticulum of the spermatheca duct. d. s., dart sack. Jl., flagellum. m. gl. as., ascending mucous gland, m. gl. des., de- scending ditto, p., penis, r. p., penis retractor muscle, ^..sper- matheca. sp. d., duct of the spermatheca. t., talon, vag., vagina). Fig. 1. Glyplostoma Newberryanum (W. G. B.). Pasadena, Cal. No. 68,997. Fig. 2. Epijihragmophora Veitchii (Newc). Cerros Is., of Lower Cal. No. 69,647. Fig. 3. The same individual, other side of the dart sac and adjacent organs. Fig. 4, 5. Ep ip hragmophora Pandora3, Bonitosensis Pils. Las Bonitos Is., off Lower California. No. 66,092. 1898.] NATURAL SCIENCES OF PHILADELPHIA. 71 Fig. 6, 7. Epiphragmophora areolata (Sowb.). Natividad Is. No. 69,646. In fig. 6 the opposite side of dart sack and associ- ated organs is seen, and the spermatheca duct with its diverticulum torn free from the uterus. Fig. 8. Epiphragmophora Stearnsiana (Gabb). Coronado Is. No. 69,014. " Fig. 9, 10. Another specimen from the same locality, No. 66,091, showing no trace of the diverticulum upon spermatheca duct. Fig. 11. Epiphragmophora Guadalupiana Dall. Guadalupe I., off" Lower Cal. No. 69,648 (Drawn to double the scale of other figures of this plate). 72 PROCEEDINGS OF THE ACADEMY OF [1898. CONTRIBUTIONS TO A KNOWLEDGE OF THE HYMENOPTERA OF BRAZIL, NO. 4.— THYNNINJE AND ADDITIONS. BY WILLIAM J. FOX. The author has withheld the publication of the present paper for some time in the hope that an opportunity would preseut itself for the classification of the true Mutillidse in the collection of Mr. H. H. Smith, and thereby avoid the inconvenience of listing the Mutillidse in more than one paper. Circumstances, however, will not permit the carrying out of such a plan, so he feels obliged to present this paper for publication, even though it deals with but a part of one family.1 *lElurus carbonarius Sm. {==Elaphroptera carbonaria Sm.) Four specimens. Rio de Janeiro (November). iElurus aethiops King. {=Thynnnn aethiops Klug"). The description of this species as given by Klug will fit what I have determined as Smith's Elaphroptera carbonaria, as will also Klug's description of Thynnus anthracinus. The specimen I refer to aethiops is larger and heavier than carbonarius, and is more coarsely punctured. It is probable that carbonarius is the same as anthracinus, but the descriptions of both are so poor that nothing conclusive can be determined from them, except their faultiuess. The specimen in question comes from Rio de Janeiro (November). JElurus nasutus Klug. Two specimens. Rio de Janeiro (November). Elaphroptera sp. Two specimens (?) of a species apparently close to Thynnus intermedins Klug. They are smaller than that species. Collected in September at Chapada. Elaphroptera decora Sm. (—Thynnus decorus Sm.) One specimen. 'See Entomological News, IX, 1, Jan., 1897, p. 14. J sElurus carbonarius and AL. aethiops differ from typical sElurus (A. nasu- tus) in the bidentate mandibles, in the third submarginal being longer than second, in the emarginate or bidentate clypeus and comparatively shorter maxillary palpi, in which joints 4-6, while much longer than the preceding ones, are still not as long as in A. nasutus. 1898.] NATURAL SCIENCES OF PHILADELPHIA. 73 Elaphroptera plagiata Sui. {==Thynnus plagiatus Sm.) One specimen. Both this and decora were collected at Chapada (October). Elaphroptera cribraria n. sp. 9. — Black; legs reddish testaceous, a curved yellow line over the base of each antenna ; head large, twice as wide as broadest part of mesothorax, covered with deep, regularly separated punc- tures (the punctuation is almost sieve-like), covered with a rather long, pale, erect pubescence ; cheeks behind eyes almost impunctate ; scape shining, strongly punctured, bearing some stiff, golden hairs beneath, as do also the mandibles; mandibles falcate, when closed apparently not dentate ; mesothorax above with large, sparse punc- tures, emarginate and depressed anteriorly in the middle, pleurae polished ; scutellum punctured ; middle segment finely punctured, subconvex, not excavated or depressed ; hind femora beneath, be- fore apex, with a long tooth or spine ; tibia? and tarsi very strongly spinose ; tarsal claws cleft; abdomen large, with strong, sparse punctures and long, pale pubescence beneath ; second dorsal seg- ment bearing four sharp, transverse carinas, the first dorsal trans- versely sulcate at apex ; sixth segment in the form of a narrow, lon- gitudinal carina. Length 13 mm. Rio de Janeiro (November). One specimen. Elaphroptera brunnea n. sp. 9 . — Brown, the head in front, thorax and legs in part, and two first abdominal segments, palest, the remainder castaneous or blackish- brown ; mandibles basally, a spot before and behind the eyes, sides of clypeus, fore femora internally, spot at apex of medial femora, stripe on fore tibia? externally, and on medial tibia? internally, yellow. Head medium, wider than thorax, finely though distinctly punctured, with sparse long hairs; occiput high and sharply margined, sparsely punctured ; scape strongly punctured with some golden bristles be- neath ; mandibles slender, falcate, without teeth ; mesothorax above with two concavities, the portion dividing them formed into a tooth- like process posteriorly ; middle segment rather squarely cut off be- hind, the upper surface in the middle posteriorly with a tubercle or prominence; thorax is not distinctly punctured; tibia? and tarsi strongly spinose; hind femora scarcely dentate at apex beneath; first dorsal segment of abdomen sharply truncate anteriorly, the truncation bounded posteriorly by a carina, behind which in the 6 74 PROCEDINGS OF THE ACADEMY OF [1898. middle stands a small tubercle ; second dorsal with three strong, transversely-parallel carinse ; remaining dorsal sparsely punctured ; ventrals flat, more distinctly punctured, especially the fifth which is also rugose-striate on apical portion. Length 9 mm. Chapada. Two specimens. Elaphroptera pallida n. sp. 9 . — Yellowish-testaceous ; spot surrounding the eye and a line extending up to the occiput on each side of front, whitish-yellow ; head closely and finely punctured, sparsely so on occiput; the lat- ter rather prominent posteriorly and suhemarginate medially ; scape triangular, greatly broadened apically ; mesothorax bearing a longi- tudinal, medial fold, which is furrowed on posterior portion, and on each side of which, posteriorly, stands a horn or tooth-like process; a median fold on scutellum ; middle segment indistinctly punctured, the upper surface prominent, slightly tuberculate medially and at postero lateral angles; hind femora but slightly dentate beneath at apex ; tarsal claws cleft ; abdomen above with sparse punctures, which become closer posteriorly, those of ventral surface stronger and closer, especially on fifth segment; first dorsal sharply truncate anteriorly, the truucated portion divided by a slender raised line and bearing some stiff, pale hairs above ; second dorsal with three transverse carime, the first rather feeble and short, the other two very sharp; body with long, sparse, pale hairs. Length 6i mm. Chapada (November). One specimen. Elaphroptera clitellata Klug. (—Thynnus clitellatus Klug). A specimen from Chapada (October). The claws are cleft and the second dorsal abdominal segment bears an acute transverse car- ina before its apex, anterior to which the segment is rugose. The legs in the specimen before me are not yellow, but rufo-testaceous. It agrees well with Klug's figure of the species, except that the yellow of mesothorax is restricted to a small dot on each side anteriorly. Telephoromyia punicea n. sp. $. — Reddish-brown, flagellum, spot enclosing ocelli, dorsulum and pleura more or less, thorax beneath, and legs, except tibiae and tarsi, blackish ; clypeus and mandibles except apex, yellowish ; head closely punctured, clothed with pale, glittering pubescence; clypeus concave in middle with two strong teeth or prongs, ante- riorly ; mandibles rather large, terminating in a sharp point, ante- rior to which the inner margin is broadly enlarged and bidentate ; 1898.] NATURAL SCIENCES OF PHILADELPHIA. 75 antennae slightly longer than head and thorax united ; joints of fla- gellurn rounded beneath, the first two about equal in length ; punc- tuation of thorax coarser than that of head, that of dorsulum coars- est, that on mesopleurse closest; scutellum strongly convex ; tarsal claws cleft; tibial spurs small as compared to yElurus carbonarius ; abdomen depressed, with distinct separated punctures and pale pube- scence; pygidium large, convex, obtusely rounded at apex, coarsely rugose ; last ventral segment bearing two flap-like carina?, one on each side, between which is the subgenital plate which is sub-acute at apex ; wings fuscous, with purplish reflection, stigma and costa reddish, other veins black. Length 21 mm. One specimen. Chapada (October). The following species of Pepsis have been identified by Herr Dr. R. Lucas, of Berlin, and were not included in the paper on Pom- pilidse : Pepsis aspasia Luc. One specimen. Corumba (April). Pepsis Foxi Luc. A large series, of both sexes. Chapada (March, April, October). Pepsis smaragdinula Luc. Rio de Janeiro (November) ; Chapada (January, March, April). Nine $ , five $ specimens. Pepsis Schlenki Luc. Five specimens. Chapada (January, March). Pepsis defecta Tasch. Several specimens. Pepsis Pertyi var. ruficornis Luc. Chapada (April). One specimen. Pepsis centaurus Luc. Chapada (April). One specimen. 76 PROCEEDINGS OF THE ACADEMY OF [1898. THE SUMMER BIRDS OF SUSQUEHANNA COUNTY, PENNSYLVANIA. BY FRANCIS R. COPE, JR.1 Since the publication of Dr. Dwight's paper on the " Summei Birds of the Crest of the Pennsylvania Alleghenies," (Auk, IX, April, 1892), and Mr. Stone's on the " Summer Birds of Harvey's Lake, Luzerne County, Pennsylvania," (Proc. Acad. Nat. ScL Phila., 1891, pp. 431-438)2 no detailed account has appeared of the summer birds of the northeastern part of the State, although it has generally been supposed that the fauna of this region partook largely of the nature of the North Mountain district, with perhaps a slightly stronger tinge of the Canadian element. Indeed, on the faunal map attached to Mr. Stone's volume on the " Birds of eastern Pennsylvania and New Jersey"3 almost the whole of Sus- quehanna County is included in what is known as the Canadian fauna. The present paper, based on several years study of the birds of the county, and including only such species as have been observed during the breeding season, s»y from June 15th to the second week in July, shows, I think, that the fauna of Susquehanna County, al- though it has a strong tinge of this Canadian element, possesses it to a less marked degree than the mountainous region further south. This fact may doubtless be accounted for by the absence of any very extensive hemlock forests, such as those found around Harvey's Lake and on North Mountain. Reference to a map will show that Susquehanna County is sit- uated in the northeastern part of Pennsylvania, between latitude 41° 40' and 42°. It is part of the Allegheny and Pocono plateaux, and may be described as a hilly, rocky country, iuterspersed with innumerable small valleys. With the exception of many small 1 Read before the Delaware Valley Ornithological Club at the Academy of Natural Sciences of Philadelphia. 2 Since the above was written, a paper has been published bearing on this subject, entitled " Summer Birds of northern Elk County, Pennsylvania," by William L. Baily, [Auk, XIII, October, 1896). 3 " Birds of eastern Pennsylvania and New Jersey," by Witmer Stone, pub- lished by the D. V. O. Club, Philadelphia, 1894. 1898,] NATURAL SCIENCES OF PHILADELPHIA. 77 lakes and ponds, the land is poorly watered, there being but few streams of any size. A spur of the Alleghenies extends through the southeastern corner, terminating in Elk Mountain, which last rises to an altitude of about 3,000 feet and is almost the only emi- nence in the county worthy of the name of mountain, the other hills not rising much above 2,000 feet. The vast tracts of forest, which fifty years ago covered the greater part of the county, now every- where bear witness to the ravages of axe and fire, and are broken up into isolated patches. Among the principal forest trees may be mentioned the Beech, Maple, Hemlock, Chestnut, Birch, and Pine, the last mentioned being, perhaps, the least plentiful of the six. Of these species the Hemlock has doubtless suffered the most, being particularly prized for its bark ; nevertheless it is still found in con- siderable numbers interspersed among the other trees. It is in these small, but numerous tracts of primeval forest which yet remain uncut, that we find most of the truly Canadian species. Here such northern birds as Black-throated, Blue, Canadian, Mag- nolia and Blackburnian Warblers, Water Thrushes, Solitary Vireos and Hermit Thrushes are all more or less common, some being abun- dant, but they are almost entirely confined to the deep woods, espe- cially where there is a thick growth of hemlock. Of other Cana- dian species, the Junco seems to be generally confined to the open clearings and pastures bordering on woodland, and is decidedly rare, Elk Mountain being the only locality where it has been found breeding in any numbers. Even here, however, where during the latter part of June, 1894, I found upward of a dozen pairs breed- ing at an altitude of 2,600 feet, not a single bird was observed on a second visit, July 2, 1897. Winter Wreus are conspicuous by their absence, although there seems to be no good reason why this spe- cies should not occur plentifully, unless it be owing to the absence of any very extensive hemlock forests, as before remarked. My only reasou for mentioning them in this paper is that during the first week in July, 1897, I twice heard a song in the depths of a hemlock forest near Dimock, which, although I am not familiar with the bird, I felt almost sure was the note of a Winter Wren. This would seem to point at least to the possibility of its breeding. In the open land throughout the greater part of the county, es- pecially in moist upland meadows, Savannah Sparrows are very common, generally breeding in small colonies; while at DundaflT, in the southeastern portion, in open fields at an altitude of some 2,000 78 PROCEEDINGS OF THE ACADEMY OF [1898. feet, the Bobolink is an abundant breeder, also occurring locally at many points in the central and eastern part of the county. As to the occurrence of several species of water birds during the breeding season in Susquehanna County, I can state nothing posi- tive, not having visited several of the more retired lakes and streams in the northwestern portion of the county, where they would be most likely to be found. To sum up, I think it may be said that the fauna of Susquehanna County is largely Alleghenian, with a strong tinge of the Canadian, but with practically nothing of what may be regarded as belonging exclusively to the Carolinian element. To be sure, Dr. Warren (Birds of Pennsylvania, p. 300) mentions having taken a Hooded Warbler in the county during the summer months, while on August 10, 1895. I shot a pair of adult Prothonotary Warblers near Dim- ock, but these species can hardly be regarded as more than strag- glers. In the following list I have made no mention of the birds breed- ing, as with few exceptions all the individuals noted during the last of June and early part of July may reasonably be assumed to be summer residents and to be breeding in the locality where seen. Such species as have not come under my personal observation or whose status as breeders may be doubtful, have been placed in brackets. Before concluding, I desire to express my thanks to Mr. Witmer Stone, of the Academy of Natural Sciences of Philadelphia, who visited the county in June 1896 and 1897, and who has rendered valuable assistance in many ways. [1. Aix sponsa. Wood Duck. Formerly a common breeder in the more retired lakes and streams, but now decidedly rare. A pair seen during the early part of August, 1895, near a wild overgrown pond in the vicinity of Dimock only points to the probability of its breeding]. 2. Ardea herodias. Great Blue Heron. Rare. Scattered pairs occasionally seen along the larger streams throughout the county. ft 3. Ardea virescens. Green Heron. Tolerably common, but like the last never found breeding in col- onies, there being generally but a single pair in one locality. The birds, however, show great partiality for the old breeding grounds, and generally return to the same spot year after year. 1898.] NATURAL SCIENCES OF PHILADELPHIA. 79 4. Nycticorax nycticorax naevius. Black-crowned Night Heron. This species has been observed but rarely during the breeding season, though there seerus to be no reason whv it should not be plentiful. 5. Philohela minor. American Woodcock. Rather common, but yearly becoming scarcer as a breeder. 6. Bartramia longicauda. Bartramian Sandpiper. One bird observed in an upland pasture near Dimock, June 19, 1897, and evidently breeding from its actions, is my only record for the county. 7. Actitis macularia. Spotted Sandpiper. Common in all suitable localities. 8. Colinus virginianus. Bob-white. Much less common now than formerly, but solitary individuals and an occasional covey are still frequently met with. During the last two years, however, there has been a noticeable increase in the numbers of this bird throughout the county. 9. Bonasa umbellus. Ruffed Grouse. More plentiful than C. virginianus, but fast becoming rarer as the forests are cut away, thus depriving it of suitable breeding grounds and hiding places. [10. Ectopistes migratorius. Passenger Pigeon. A flock of four was seen July 19, 1897, in a dead chestnut tree on the edge of a strip of woodland near Dimock. Although I had a good look at the birds through my glass and feel no reasonable doubt as to the identity, I was unfortunately unable to secure any of them. This species is known to have formerly been an abundant breeder in Susquehanna County, but these are the first individuals seen for many years. This occurrence at this season of the year may possibly indicate that they still nest occasionally in the wilder parts of the county]. 11. Zenaidura macroura. Mourning Dove. This species, which may be regarded as common to the Alleghe- nian and Carolinian zones, though perhaps more typical of the lat- ter, is not uncommon in some localities, although decidedly rare in others. 80 PROCEEDINGS OF THE ACADEMY OF [1898. 12. Circus hudsonius. Marsh Hawk. The county is seemingly far too hilly and mountainous to suit the habits of this hawk, but nevertheless a pair has been seen regularly during June and July for several years past on a small marshy meadow surrounding Elk Lake, and doubtless breeds there. 13. Accipiter velox. Sharp-shinned Hawk. Rather common, being frequently met with during the breeding season. 14. Accipiter cooperi. Cooper's Hawk. Rare and much less common than the preceding. 15. Buteo borealis. Red-tailed Hawk. Decidedly the most abundant hawk in the county, a few being seen almost daily. 16. Buteo lineatus. Red-shouldered Hawk. Probably ranks next to B. borealis in abundance. 17. Falco sparverius. Sparrow Hawk. Rather common. [18. Syrnium nebulosum. Barred Owl. The only record which I have of the occurrence of this owl in summer time is an adult male shot by a friend during the latter part of August, 1897. It may doubtless be regarded as a rare perma- nent resident]. 19. Megascops asio. Screech Owl. Common resident. 20. Bubo virginianus. Great-horned Owl. Tolerably common resident in the deeper forests throughout the county. 21. Coccyzus erytbropbthalmus. Black-billed Cuckoo. Not uncommon, during the breeding season. 22. Ceryle alcyon. Belted Kingfisher. Tolerably common along the banks of ponds and streams, being especially abundant at Silver Lake in the northwestern part of the county. 23. Dryobates villosus. Hairy Woodpecker. Common throughout the wooded portions. 1898.] NATURAL SCIENCES OF PHILADELPHIA. 81 24. Dryobates pubescens. Downy Woodpecker. Abundant and generally distributed, both in the woodland and in the open country. [25. Ceophloeus pileatus. Pileated Woodpecker. Personally I have never observed this species during the breed- ing season, but as several specimens have been taken during the early part of August, it doubtless breeds sparingly]. 26. Melanerpes erythrocephalus. Red-headed Woodpecker. Rare. A pair was observed at Dundaff, June, 1895, and a single bird near Montrose in June, 1896. 27. Colaptes auratus. Flicker. Abundant everywhere. 28. Antrostomus vociferus. Whip-poor-will. Very rare, having been only once or twice noted in low, secluded spots. 29. Chordeiles virginianus. Night Hawk. Very common, collecting in large flocks during August. 30. Chaetura pelagica. Chimney Swift. Abundant, breeding throughout the county. It has, however, adapted itself to the ways of civilization and has never been ob- served nesting in hollow trees. 31. Trochilus colubris. Ruby-throated Humming-bird. Common, both about houses and in the deep woods. 32. Tyrannus tyrannus. Kingbird. Abundant and generally distributed. 33. Myiarchus crinitus. Great-crested Flycatcher. Tolerably common throughout the county. 34. Sayornis phoebe. Phoebe. Abundant everywhere in the open country. 35. Contopus virens. Wood Pewee. Fully as abundant as the preceding species, but confined to or- chards and woodlands. 36. Empidonax minimus. Least Flycatcher. Very common and universally distributed during the breeding season. 82 PROCEEDINGS OF THE ACADEMY OF [1898. 37. Otocoris alpestris praticola. Prairie Horned Lark. Although this species has been recorded during the breeding sea- son by Messrs. Dwight and Parke at Athens, Bradford County, at Williamsport (Koch), and in Elk County (Baily), it has never, to my knowledge, been observed in this county until the summer of 1896, when a bird was noted July 6, in a grassy meadow near Dimock. 38. Cyanocitta cristata. Blue Jay. Abundant, especially in woody situations. 39. Corvus americanus. American Crow. Abundant. 40. Dolichonyx oryzivorus. Bobolink. A common breeder, but decidedly local in its distribution, al- though isolated pairs may be found in all suitable localities through- out the county. At Dundaff, a small village in the southeastern part, at an elevation of 1,620 feet, upward of two dozen pairs were found breeding in June, 1895, while a small colony generally nests in some upland meadows near Dimock. It may also be of interest to note that two pairs of this species were observed at Waymart, Wayne County, Pennsylvania, June 22, 1895, and four pairs near Sugarloaf Mountain on the western border of the same county, June 23, 1897. 41. Molothrus ater. Cowbird. Kather common. 42. Agelaius phoeniceus. Red-winged Blackbird. Locally common, breeding plentifully on the marshes of several lakes near Dimock, where I have taken fresh eggs as late as the first of July. 43. Sturnella magna. Meadow Lark. Very common and generally distributed. 44. Icterus galbula. Baltimore Oriole. Common about houses and generally distributed, apparently in- creasing in abundance. 45. Quiscalus quiscula aeneus. Bronzed (?) Crackle. While on a collecting trip with Mr. Witmer Stone in the north- western part of the county, June 22, 1897, a single Grackle was ob- served, presumably Q. q. aeneus. Unfortunately neither of us was 1898.] NATURAL SCIENCES OF PHILADELPHIA. 83 able to secure the bird ; but from its actions it was undoubtedly nesting in the neighborhood. This record seems interesting as being the first evidence, to my knowledge, of the occurrence of any species of Grackle in Susquehanna County. 46. Carpodacus purpureus. Purple Finch. Not uncommon, both in the woodland and in the open country about houses, where its pretty song may be heard from April to the middle of July. 47. Passer domesticus. English Sparrow. This pest, everywhere rapidly increasing in numbers, and now resident in almost every town and village of any size throughout the county, bids fair to soon drive away all the old feathered songsters from our gardens and orchards. 48. Spinus tristis. American Goldfinch. Abundant everywhere. 49. Poocaetes gramineus. Vesper Sparrow. « The most abundant and generally distributed of the sparrows during the breeding season ; in fact, one of the characteristic birds of the open country. 50. Ammodramus sandwichensis savanna. Savannah Sparrow. Very common and widely distributed in all suitable localities, especially in the northern and eastern portions of the county. 51. Ammodramus savannarum passerinus. Grasshopper Sparrow. Common in dry uplands. 52. Spizella socialis. Chipping Sparrow. Abundant. 53. Spizella pusilla. Field Sparrow. Abundant in open fields and overgrown pastures. 54. Junco hyemalis. Slate-colored Junco. Formerly common at Elk Mountain, from 2,000 feet up, and gen- erally confined to open fields, but now quite rare. Its occurrence in the rest of the county is limited to two records: First, a single pair shot June 26, 1896, near Dimock, and secondly, another pair engaged in constructing a nest near the same locality, April 24, 1897. One would expect to find this species in the elevated plateau land of Ararat township, on the eastern border of the county, a locality well suited to its habits; but on a visit to this region in 84 PROCEEDINGS OF THE ACADEMY OF [1898. June, 1897, I did not meet with a single individual, although it was found three miles to the eastward, on Sugarloaf Mountain, in Wayne County. 55. Melospiza fasciata. Song Sparrow. Abundant everywhere, except in the deep woods. 56. Melospiza georgiana. Swamp Sparrow. Rather common in low swampy situations. 57. Pipilo erythrophthalmus. Towhee. Tolerably common in scrubby fields and clearings. 58. Zamelodia ludoviciana. Rose-breasted Grosbeak. This species seems to be very rare, having only been observed once during the breeding season, when a fine male was shot June 22, 1896, in an old clearing near Dimock. 59. Passerina cyanea. Indigo Bird. Abundant, especially in briar patches and clearings, where the males may be heard singing all day long. 60. Piranga erythromelas. Scarlet Tanager. Very common throughout the deep woods. 61. Petrochelidon lunifrons. Cliff Swallow. Common, but rather local in its distribution, and generally found breeding in colonies. It has of late years been gradually decreasing in abundance. 62. Chelidon erythrogaster. Barn Swallow. More abundant and generally distributed throughout the county than the preceding species. 63. Tachycineta bicolor. Tree Swallow. Rare. Scattered pairs occasionally seen in suitable localities. 64. Ampelis cedrorum. Cedar Bird. Common summer resident, occurring in large flocks during June and again in September. 65. Vireo olivaceus. Red-eyed Vireo. Very abundant, both in the shade trees about houses and in the deep woods. 66. Vireo gilvus. Warbling Vireo. A nest with three young, collected by Mr. Stone and myself near Milford, June 22, 1897, is the only record which I have of its occurrence in Susquehanna County. 1898.] NATURAL SCIENCES OF PHILADELPHIA. 85 67. Vireo flavifrons. Yellow-throated Vireo. Not uncommon, being frequently met with during the breeding season, especially in the deep woods. 68. Vireo solitarius. Blue-headed Vireo. Common in the deep forests throughout the greater portion of the county, one or more pairs being usually met with in all the larger pieces of woodland. Two adults with young just out of the nest and nut yet able to fly were observed July 8, 1896, about two miles south of Springville. 69. Mniotilta varia. Black and White Warbler. Tolerably common in second growth woods and clearings. 70. Compsothlypis americana. Parula Warbler. Not uncommon, and several times met with in woods where there is apparently no usnea moss. It would be interesting to know what the bird constructs its nest of in such localities. 71. Dendroica aestiva. Yellow Warbler. Common throughout the open country. 72. Dendroica caerulescens. Black-throated Blue Warbler. Abundant and generally distributed in the deep hemlock woods, being, perhaps, the commonest representative of its genus. 73. Dendroica maculosa. Magnolia Warbler. Another very common species, almost as plentiful as the preced- ing, but like it coufined to the deep hemlock woods. 74. Dendroica pennsylvanica. Chestnut-sided Warbler. Common, but confined to the clearings and tracts of 'scrub.' A nest together with the brood of young birds was discovered June 27, 1896, in a small orchard within a few yards of the house. 75. Dendroica blackburniae. Blackburnian Warbler. Abundant wherever there is a thick growth of hemlock. It would be hard to say whether this species or D. caerulescens is the more plentiful, for as Dr. Dwight remarks, there are " places where both might almost be said to swarm." 76. Dendroica virens. Black-throated Green Warbler. Also abundant in the deep hemlock forests, but hardly as plenti- ful as the preceding species. 77. Seiurus aurocapillus. Oven-bird. Abundant everywhere. 86 PROCEEDINGS OF THE ACADEMY OF [1898. 78. Seiurus noveboracensis. Water Thrush. This typical Canadian species seems to be decidedly rare, the only record for the county being one immature female shot June 26, 1896. This bird was secured in a dense swamp containing a sparse growth of rhododendron, and had evidently been out of the nest but a short time. 79. Geothlypis trichas. Maryland Yellow-throat. Very common, but confined to clearings and open grounds, and seldom noted in the deep woods. 80. Sylvania canadensis. Canadian Warbler. Another species belonging to the Canadian fauna, and one almost as abundant as D. caerulescens. It is found throughout the county, in the lower and damper portions of the deep forests, generally, but not always, where there is a thick growth of hemlock. Personally I have never detected the Redstart (Setophaga ruticilla) during the breeding season in this county, but during the latter part of June, 1895, I found it to be very common in portions of Wayne County and at Lake Teedyuskung, Pike County. 81. Galeoscoptes carolinensis. Catbird. A common species in the open country. 82. Harporhynchus rufus. Brown Thrasher. Rather rare in the central and northern parts of the county, in- creasing in abundance toward the southern border. Observed only in scrubby fields and clearings. 83. Troglodytes aedon. House Wren. Tolerably common about houses. [84. Troglodytes hyemalis. Winter Wren. Very rare. As previously remarked, the song has been detected several times during the early summer in the deep hemlock woods near Dimock, and leads me to think that it probably breeds spa- ringly in the wildest portions of the county]. The Brown Creeper, Certhia famUiaris americana, although re- corded by Messrs. Dwight, Baily and Stone from Sullivan, Elk and Luzerne Counties respectively, has never been observed by me in Susquehanna County during the breeding season, and if it does occur, must be regarded as a very rare summer resident. 85. Sitta carolinensis. White-breasted Nuthatch. Very common, both in the woods and in the open country. 1898.] NATURAL SCIENCES OF PHILADELPHIA. 87 86. Parus atricapillus. Black-capped Chickadee. Abundant in the woodland. 87. Turdus mustelinus. Wood Thrush. A common species and generally confined to the deep woods. A nest containing young nearly ready to fly was discovered, however, June 18, 1895, situated in a young maple tree on the border of the woods within a few rods of the house. The female bird was ex- ceedingly tame, allowing approach within a foot of the nest, but usually this species lacks much of the tameness and confidence which so characterizes it in the more densely populated portions of the country. 88. Turdus fuscescens. Wilson's Thrush. Very abundant in dense, swampy woodland throughout the county. Owing to its shyness and the inaccessibility of the locali- ties which it generally inhabits, the bird is very difficult to approach, but its presence is always betrayed by its wild bell-like notes, which may be heard at all hours of the day, but which sound the sweetest in the early morning and about sunset. It is almost impossible to imitate the song on paper, but the syllables " ta-weel'ah, ta-weel'ah, twil'ah, twil'ah," mentioned in Baird, Brewer and Ridgway's North American Bird* (Vol. I, p. 9), convey to my ear the most accurate description of it which I have seen. After careful observation and study, I am prepared to say that this is one of the most plentiful of the Turdidce in Susquehanna County, surpassing in abundance both T. mustelinus and 'pallasii. 89. Turdus aonalaschkae pallasii. Hermit Thrush. Tolerably common wherever the hemlock remains uncut, but hardly as plentiful as T. mustelinus, being absent in many of the localities where the latter is comparatively common. I have, on many occasions, however, observed the two species singing almost side by side, and fully agree with other observers that the song of the Hermit is considerably superior to that of the Wood Thrush, possessing as Dr. Dwight remarks, " a ringing sweetness that is only matched in part by the latter." 90. Merula migratoria. American Robin. Common everywhere throughout the county, except in the deep woods. 88 PROCEEDINGS OF THE ACADEMY OF [1898. 91. Sialia sialis. Bluebird. Rather common, but gradually becoming less plentiful as a sum- mer resident. During the spring, summer and autumn of 1895, not a single individual was observed anywhere in the county, but during June and July, 1896, several broods were noted, while in 1897 the species was quite common again. 1898.] NATURAL SCIENCES OF PHILADELPHIA. 89 February J. The President, Samuel G. Dixon, M. D., in the Chair. Twenty-two persons present. February 8. The President, Samuel G. Dixon, M. D., in the Chair. Twenty-nine persons present. February 15. J. Cheston Morris, M. D., in the Chair. Twenty-six persons present. A paper entitled "Errant Frnstules of Eunotia major," by T. Chalkley Palmer, was presented for publication'. February 22. The President, Samuel G. Dixon, M. D., in the Chair. Eighty persons present. Papers under the following titles were presented for publication : — "A New Weasel from New Mexico," by C. M. Barker and T. D. A. Cockerel 1. " On the Genus Halia of Risso," by W. H. Dall. " Description of a new Tethys (Aplysia)," by E. J. Letson. Under the auspices of the Anthropological Section the subject of Idiocy was discussed as follows: — Anatomically, by William G. Spiller, M. D. Physiologically, by Charles K. Mills, M. D. Psychologically, by Prof. Lightner Witmer. Educationally, by Martin W. Barr, M. D. (No abstract). James Lane Pennypacker was elected a member. The following were ordered to be printed : — 90 PROCEEDINGS OF THE ACADEMY OF [1898. VOLCANIC ROCKS OF MESOZOIC AGE IN PENNSYLVANIA. BY E. GOLDSMITH. My petrographical and geological observations have convinced me that nearly all so called ''trap" is of volcanic origin. Sup- porting proofs may be found in many localities near Philadelphia such as the Haycock Mountain, New Hope and the railroad cuts north and south of Quakertown in Bucks County, Pa. The richest field of observation, however, is the hill four miles north of Potts- town, Montgomery County. The various outcrops of the volcanic rocks may there be studied to greater advantage than in the other localities. One hundred and fifty acres of the top and side of the hill now form a public park, much of the rubbish and underbrush being, therefore, removed. A series of volcanic terraces of Mesozoic age has been thus uncovered and is, I think, worth recording. These terraces were formed by four distinct outflows of lava. The four, five or six sided columns of greenstone-basalt can be seen on the edge of each step from the first outpour. The first outflow had a ran. 1898.] NATURAL SCIENCES OF PHILADELPHIA. 15 Nat. Hist. [6] xiii, p. 430, 1894), as on the front wings a dark-brown streak occurs in the subraedian space from the cross-vein almost to the distal end, and there is a small, separate brown spot in the same space on the basal side of the same cross-vein ; in the subcostal space of the same wings there are, between some of the antecubitals, small pale brown spots in the midst of the yellow of the anterior margin. This yellow extends to the pterostigma in all but two males. The ventral abdominal spots of basilinea are not present. Recorded from Turkestan (Brauer), Persia and Yarkand (Selys). 8. Orthetrum cancellation L. Five males, nine females, " below 5,000 f." Recorded from the eastern side of the Caspian and from Persia (Selys). 9. Orthetrum brunneum Fonsc. Five males, three females, " below 5000 f" ; two females " 5- 10,000 f." Not distinguishable from European specimens, with which I have carefully compared them, and certainly different from gracile (Albania) Selys and Ramburii Selys. One female has the discoidal triangle of both hind wings crossed by one vein, but I can find noth- ing to indicate that it is of a different species. Abdomen £27-28, 9 27-28. Hind wing £34-35, 9 34-35. Recorded from Turkestan (Brauer) and Persia (Selys). 10. Orthetrum hyalinum Kirby (?) O. h. Kirby, Proc. Zool. Soc. Lond., 1886, p. 326, pi. xxxiii, figs. 5, 6. One female, " below 5,000 f," is probably this species, although it is larger (total length 38 mm., abdomen 25, hind wing 29, alar expanse 62), and the thorax is pale olive instead of reddish-brown, which may not, however, indicate more than that this individual is more immature. 11. Orthetrum triangulare Selys. Libella t. Selys, Mittheil. zool. Mus. Dresden, iii, p. 314, 1878. Two males, " below 5,000 f." agree with the very brief diagnosis. Their size is rather large; abdomen 31.5, hind wing 38 mm. 12. Crocothemis erythrsea Brulle. Six males, five females "5-10,000 f." ; six males, five females " below 5,000 f." Abdomen $ 21-23.5, 9 21-22 mm., hind wing $ 25-27.5, 9 25-29. In seven males and eight females, and on one side 11 154 PROCEEDINGS OF THE ACADEMY OF [1898. only of one male and one female, the sectors of the triangle are a little separated at their origin. Previously known from Turkestan (Selys). 13. Sympetrum (or Diplax) vulgatum L. One male, " 5-10,000 f.", has the black longitudinal line on each side of the third abdominal segment, the basal line of the frons pro- longed iuferiorly in front of the eyes,hamules as described by Baron de Selys (Ann. Soc. Ent. Belg., xxxi, p. 10). It is of the typical form of vulgatum and not of the race decolorata Selys. 14. Sympetrum (Diplax) Fonscolombii Selys. One male, two females " 5-10,000 f." ; one female " below 5,000 f." In the male, which is semi-adult, the yellow on the base of the hind wings reaches out in the submedian space almost to the tri- angle and more than half way back toward the hind margin. In the females the extent of this yellow is smaller and like that of European examples. Previously known from Turkestan, and Murree in N. W. India. Mr. C. C. Adams and Prof. M. J. Elrod have sent me both sexes from the plateau of the Nilgiris, 7,500 ft., taken in August and September, 1896. 15. Sympetrum (Diplax) meridionale Selys. One female, " below 5,000 f." There is a greater extension of yellowish coloring over the bases of the wings than is usual in Euro- pean individuals of this species, but the other characters agree. Baron de Selys refers to this species a female from " les montagnes de lTnde." (Ann. Soc. Ent. Belg., xxviii, p. 36, 1884). 1898.] natural sciences of philadelphia. 155 March 1. Mr. Charles Morris in the Chair. Twenty-eight persons present. A paper entitled " The Muscidae collected by Dr. Donaldson Smith in Somali Land," by Garry de N. Hough, M. D., was pre- sented for publication. March 8. The President, Samuel G. Dixon, M. D., in the Chair. Twenty-one persons present. A paper entitled " A new Grasshopper Mouse from New Mexico," by Samuel N. Rhoads, was presented for publication. March 15. Mr. Charles Morris, in the Chair. Twenty-seven persons present. A paper entitled, " Notes on the Fossil Walrus of Eastern North America," by Samuel N. Rhoads, was presented for publication. The death of William M. Singerly, a member, was announced. March 22. The President, Samuel G. Dixon, M. D., in the Chair. Eighty persons present. The death of Thomas McKean, a member, was announced. Mr. Witmer Stone made a communication on the breeding- habits of some birds of Eastern Pennsylvania, illustrated by beauti- ful lantern views taken by Messrs William L. Whitaker and William L. Baily. (No abstract). March 29. Mr. Charles Morris, in the Chair. Twelve persons present. Papers under the following titles were presented for publication :- 156 PROCEEDINGS OF THE ACADEMY OF [1898. "Birds observed in Central California in the summer of 1893," by John Van Denburgh. "Revision of the North American Slugs: Binneya, Hemphillia, Hesperarion, Prophysaon and Auadenulus," by Henry A. Pilsbry and E. G. Vanatta. Mr. Carroll Smyth was elected a member. The following were ordered to be printed : — 1898.] NATURAL SCIENCES OF PHILADELPHIA. 157 DIPTERA COLLECTED BY DR. A. DONALDSON SMITH IN SOMALILAND, EASTERN AFRICA. BY CHAS. W. JOHNSON. The Diptera described and listed in this and the following paper by Dr. Garry de N. Hough, were collected by Dr. Smith on his ex- pedition through Somaliland from Berbera to Lake Rudolf, thence southeast to the coast.1 All of the specimens have been presented to the Academy of Natural Sciences of Philadelphia by Dr. Smith. In studying this material I have had to depend entirely on de- scriptions, and one important paper I have been unable to consult, so that a few species have had to be set aside for the present. For any error, therefore, that may occur in their identification, I wish to beg kind indulgence. I also wish to express my sincere thanks to Dr. Hough for his kindness in working up the Muscidse. CTJLICIDiE. Culex sp. Two specimens, Sheikh Husein. Oct. 7th. Too imperfect for deter- mination. STRATIOMYID^. Sternobrithes tumidus Loew. Sternobrithes tumidus Loew, Oefers. Kongl. Akad. Forhand., 264, 1856. One specimen, Sheikh Husein, October 3, 1894. TABANIDJE. Pangonia obesa Walker. Pangonia obesa Walker. Insecta Saund. I, 14. Five specimens 9 collected at Sheikh Husein, Sept. 20, 1894, agree with Walker's description. Pangonia appendiculata Macquart. Pangonia appendiculata Macq. Dipt. Exot. I, 97, PI. 13, fig. 2. ? Pangonia varicolor Wied. Auss. Zweifl., I, 100. One specimen ( shaped marking below, near the tip of the third longitudinal vein as shown in Fig. '■'>. Two specimens, near Lake Abaya, May 9, 1895. OSCINIDJE. Elachiptera femorata n. sp. Length 8 mm. Head brownish, lower portion of the face and front more or less yellowish, orbits in certain lights are silvery, the ocellar triangle shining, the lower portion greatly attenuate and almost reaching the base of the antenna?, under side of the antennae red, upper side and setae dark brown. Thorax brown, with three black stripes and covered with a grayish pubescence, which also forms a short prominent line in the center of the anterior portion of the black dorsal stripe, pleurae brownish, scutellum blackish. Abdomen black, with a narrow yellowish-white posterior margin to all the segments, venter brownish. Femora and tibiae reddish, tarsi yellow, posterior femora somewhat thickened. Wings hyaline, veins dark-brown. Three specimens, Ginea, November 14th, and Sheikh Mahomed, October 11, 1894. Chlorops sp. One specimen, Sheikh Husein, October 3, 1894. HIPPOBOSCLDJE. Hippobosca camelina (Savg.) Leach. Hipposca camelina Savigny mss. Leach, Eprob. Ins., Wern. Mem., II, 556. Tab. XXVII, figs. 11-14, JS17; Kondani, Ann. Mus. Civ. Storia Nat. Gen- ova, XII, 165, 1878. One specimen, Berbera, July 5, 1894. Ornithomyia nigricans Leach. Ornitliomyia nigricans Leach. Eprob. Ins. Wern. Mem., II, 10. Tab. XXVII, figs._7-10, 1817; Wied. Auss. Zvv., 11, 609, 3 ; v. d. Wulp, Dipt. Sum. Exp. 57, 1 ; v Roder, Entom. Xachr., XIX, 236, 29. Two specimens, Dada, November 21, 1894. These specimens agree with the description. 1898.] NATURAL SCIENCES OF PHILADELPHIA. 165 THE MUSCIDiE COLLECTED BY DR. A. DONALDSON SMITH IN SOMALI LAND. BY GARRY DE N. HOUGH, M. D. One cannot offer for publication a paper on Muscidse in which species are described as new without a certain amount of misgiving. So many descriptions of Muscidse have been published that I fear I may have overlooked some, and that I may have added to the already too long list of synonyms. I can only say that I have con- scientiously tried to avoid this. My descriptions are long, but the resemblances between the Muscidse are so close, that it is essential to describe new species at length if they are ever to be recognized by subsequent students. If any of the species described as new are already known, I shall be very glad to be informed of it and to publish the synonymy. Considerable space has been given to the bristles of the head, and, as I have felt obliged to introduce some new names, my de- scriptions must be prefaced by a few remarks on these bristles. Bristles of the Head. — The central feature of the muscid face is the frontal suture, which, taken as a whole, has the shape of an in- verted U, the arms making with one another more or less of an angle. If we draw a line across the face tangent to the convexity of this suture, then the part of the face dorsad of this line and between the eyes is the front. The fraut is distinctly divided into three parts, a median (the frontal vitta), and two lateral (the geno vertical plates). The boundary lines between the vitta and the geno-verti- cal plates are marked by rows of bristles (usually one row on each side of the vitta), which are inserted in a dorso-ventral line from a point on a level with the anterior ocellus to the ventral border of the front. These are the frontal bristles. They are in two groups which I call the ascending frontal and the trans-frontal. The ascending frontal, from one to four in number, are the most dorsad of the frontal bristles. If more than one is present, the most dor- sad is the largest, and each succeeding one is smaller (usually much smaller) than its dorsal neighbor. They are curved dorsad, caudad and more or less laterad, and are parallel to one another. 166 PROCEEDINGS OF THE ACADEMY OF [1898. The trans-frontal vary in Dumber in different species, in the two sexes of the same species and even in different individuals of the same sex. In the female they are directed mesad and cephalad across the frontal vitta and more or less of them may decussate with their fellows of the opposite side. In the male they are generally more numerous than in the corresponding female, and they are directed cephalad with (usually) a curve dorsad or ventrad. As in the female they may decussate, but as a rule they do not. Each geno-vertical plate is continued over the vertex to the occi- pital surface in the form of a little ridge. This ridge is bounded laterad by a suture which begins at the dorso-mesal angle of the eye, runs to the vertex, over the vertex to the occipital surface of the head, and then in a ventro-mesal direction as far as the great cen- tral foramen. About half way between the vertex and the great foramen the little ridge bifurcates. The lateral branch continues in about the same direction as the main ridge, while the mesal branch runs more or less directly mesad and joins its fellow of the opposite side ; thus by these two little ridges and their mesal branches a tri- angular area is marked out at the dorso-central part of the occiput. At the very beginning of each of these little ridges just mentioned, right on the vertex, stands a bristle which is called the inner verti- cal, and down a little way on each ridge just before it bifurcates stands another which I propose to call the oceipito-central. Both of these bristles are present in every species that I have so far had the opportunity of examining. They vary in size in different spe- cies and in the two sexes of the same species. The inner vertical project dorsad with more or less of a curve caudad and mesad, so that they sometimes decussate a little and are almost always con- vergent. The amount of convergence varies even in individuals of the same species and sex. The oceipito-central project dorsad and mesad sometimes with a curve, sometimes without a curve, some- times decussating a little with one another, sometimes apparently decussating with a bristle called the post-vertical, which will be de- scribed later. On the vertex, just laterad the beginning of the little ridge and the inner vertical bristle, stands a bristle which is called the outer vertical. This bristle varies much in size in different species and in the two sexes of the same species. It is larger in the female than in the male, and is absent in the males of some species although pres- ent in their females. 1898.] NATURAL SCIENCES OF PHILADELPHIA. 167 A little caudad, ventrad and laterad of the outer vertical, on the occipital surface of the head, there is sometimes a small bristle which curves dorsad, mesad and a trifle cephalad, apparently decus- sating with the outer vertical. I call this the occipito- lateral. Parallel to and at a variable distance caudad from the occipital margin of the eye, is a row of bristles called the cilia of the posterior orbit. They begin dorsad very near the outer vertical bristle but distinctly caudad of it and also very near but cephalad of the occi- pito-lateral. The members of the dorsal part of this row are com- monly larger and more perfectly aligned than the members of the members of the ventral portion, and there is much difference in their size and correctness of alignment in different species as well as in the distance to which they can be traced ventrad as a distinct row. Frequently there are one or more rows of exceedingly small bristles intercalated between the cilia of the posterior orbit and the occi- pital margin of the eye. The posterior orbit is the space between the cilia of the posterior orbit and the occipital margin of the eye ; it is usually narrower in the male than in the female, and may be absent. I spoke above of a triangular area marked out at the dorso-cen- tral part of the occipital surface of the head by the two little ridges and their mesal branches. This triangle and the more or less dis- tinct eminence on which the ocelli are situated, are continuous with one another over the vertex and form a differentiated portion which is occupied by a group of bristles which may be called the ocellar group. Among them we must distinguish the greater ocellar (ocel- lar pair of Baron Osten-Sacken), and the lesser ocellar. The greater ocellar is a pair of bristles usually easily distinguish- able by their larger size, which are inserted between the anterior ■and posterior ocelli. They vary in size, direction and curvature in different species and in the two sexes of the same species, and in different individuals (especially males) of the same species. They are generally parallel to the lesser ocellar bristles and sometimes differ from the latter in size by a very small amount. The lesser ocellar are more numerous, from three to twelve pairs, and are usually inserted in two parallel lines (sometimes in four) which begin very close to the insertion of the greater ocellar and extend caudad a variable distance, sometimes about half way to an imaginary line joining the insertions of the inner vertical bristles, sometimes beyond this line to the occipital surface of the head. 168 PROCEEDINGS OF THE ACADEMY OF [1898. Usually the most caudal pair of lesser ocellar is somewhat larger than the rest, sometimes much larger, and it has received the spe- cial name post-vertical pair. When it is much larger and at the same time is separated by quite a space from the next pair (as in the females of Myospila, Muscina and Graphomyia) the post-verti- cal really seem to be an independent pair of bristles, but when (as in Musca and Morellid) they are hardly distinguishable in size, are as near the next pair as that pair is to the next in the series, and still more when we find similar bristles even caudad of the post- verticals themselves it is clear that they belong to the lesser ocellar series. In some species we can see, in the middle of the frontal vitta, a more or less distinctly differentiated dorso-ventral stripe. The ven- tral end of this stripe is not much above the ventral end of the frontal vitta itself. Dorsad it broadens out and then divides into two branches, one of which passes on each side of the ocellar emi- nence to the vertex. Inserted on the vitta some little distance below the anterior ocellus and close to this stripe (over which they decussate) we find in some species a pair of rather small bristles which I call the preocellar. Bristles which are inserted on the geno-vertical plate are called orbital. On each side of the face at the ventral end of the arm of the frontal suture, begins what is called the transverse impression of the face. This is at first a rather broad shallow depression. It passes almost horizontally laterad (becoming narrower as it proceeds) ven- trad of the eye, and can be readily traced as far as the ventro-cau- dal angle of the eye where it usually seems to end. Sometimes, however, it can be seen to be continuous with a suture of the occi- put which runs from the latero-ventral angle of the great foramen toward and sometimes to the ventro-caudal angle of the eye. That part of the side of the face which is dorsad the transverse impression, laterad of the arm of the frontal suture and mesad of the eye is called by the German authors the wange. For this, I suggest the word gena, for reasons which will appear later. The gena is continuous dorsad with the geno-vertical plate. Ventrad of the transverse impression and ventrad of the eye, ex- tending ventrad to the edge of the mouth opening, cephalad to the vibrissal ridge, and continuing caudad on the occiput to the great foramen, is the part which the German authors call the Backe. For this I suggest the word bucca. 1898.] NATURAL SCIENCES OF PHILADELPHIA. 169 In English we have but one word " cheek " for the two German words Wange aud Backe. The Wange is dorsad of the Backe, In Latin the word " gena " refers rather to the upper part of the cheek, the word " bucca " to the lower part. For these reasons and be- cause the words bucca and Backe are so nearly alike, it has seemed to me wise to translate Wange by gena and Backe by bucca. The bucca is sometimes clearly defined, cephalad, from the vibrissal ridge by a distinct steep edge (I have never been able to see a suture here), at other times it is not so defined and the line of sepa- ration is an imaginary one, more or less clearly indicated by dif- ferences in the characters of the hairs and bristles of the bucca and the vibrissal ridge. That portion of the bucca which is on the occi- pital surface is bounded by distinct sutures. The whole bucca is hairy or bristly, the hairs and bristles varying in number and size in different species. Mesad of the arms of the frontal suture, constituting the lateral boundaries of the facial fossa, are two distinct ridges, one on each side of the face. These are the vibrissal ridges, so-called because on them the stout bristles called vibrissae are inserted. They were called the faeialia by Desvoidy, by Walker and by Baron Osten- Sacken, but the term used by Professor Brauer, " Vibrissenleisten," meaning vibrissal ridges, is so much more appropriate, that I prefer to sacrifice priority to good sense. If we follow the vibrissal ridge dorsad we find that it diminishes in width and gradually disappear^ from view under the gena. If we follow it ventrad we find that it gradually increases in width, being largest at a point called the vibrissal angle, where the largest of the vibrissa? is inserted. The position of the vibrissal angle with relation to the edge of the mouth- opening is not the same in all genera, being sometimes very close to it and sometimes rather remote. In all the genera to be considered in this paper, however, except Pollenia and Paracompsomyia, the two are very close together. Dorsad of the vibrissal angle we usually find one or more vibrissa? which are much smaller than the one inserted at the angle. Dorsad of the smaller vibrissa? the ridge is usually more or less thickly beset with minute bristles as far as or beyond the ventral end of the arm of the frontal suture. Ven- trad of the angle there are usually a few vibrissa?. The bristles of the legs require also a few words of introduction. These bristles have not as yet received the study that they deserve in the Muscidse. I believe there is a typical arrangement of these 12 170 PROCEEDINGS OF THE ACADEMY OF [1898. ^"^vv-^^.u a. i. 1898.] NATURAL SCIENCES OF PHILADELPHIA. 171 bristles subject, of course, to great variation but easily recognizable. When the limbs of a Muscid are in their natural position it will at once be seen that so far as the fore and hind legs are concerned, one surface is turned toward the median line of the body and one away from it ; these are the mesal and lateral surfaces respectively. The lateral surfaces are provided with stouter and more numerous bristles as would be expected if, as is supposed, the function of the bristles is a protective one. The terms flexor and extensor need no explanation. The anterior femur in cross section has the shape I, 1, and its bristles (at least the prominent ones) are in three rows, each of which extends from base to apex. Two of these rows are near the extensor border, the one nearest that border being made up of larger bristles than the other ; the third row is very near the flexor border ; all three are on the lateral surface. The hind femur is shaped very like the fore femur, and has on its lateral surface an extensor row and a flexor row of bristles, corresponding to the row nearest the extensor border and the flexor row of the lateral surface of the fore femur; the mesal surface has also a flexor row, but its members are smaller and less numerous than those of the flexor row of the lateral surface. The middle femur is much less flattened than the others, and in its natural position its surfaces are anterior and posterior flexor and extensor ; it has an anterior flexor and posterior flexor row of bristles and also an anterior median and a posterior median row. As a rule the median rows are incomplete, l. e., do not extend all the way from base to apex. The anterior commonly ends half way from base to apex, the most apical mem- bers of the row being the largest, the posterior often begins about half way from base to apex, and extends thence to the apex, its apical members being also the largest, and usually the apical three or four form a transverse group of considerable prominence. The tibia? are, in cross section, almost triangular with a very well marked extensor border and with flexor, mesal and lateral (middle tibia with flexor, anterior and posterior) surfaces. The same difference in size and number of bristles that was noted in the case of the mesal and lateral surfaces of the fore and hiud femora is noticeable in the corresponding tibiae, but is not 30 pronounced. Each of these surfaces has, ordinarily, a flexor and extensor row of bristles. The middle tibia has also flexor and extensor rows of bristles on its anterior and posterior surfaces, and it has, in some genera, a prom- inent bristle on the flexor surface which does not occur (as far as 172 PROCEEDINGS OF THE ACADEMY OF [1898. my observation extends) on either of the other tibise, Very often the surfaces of the tibire have other rows besides the flexor and ex* tensor, such are usually made up of minute bristles, except for the terminal subapical member, but sometimes one or more of the mem- bers are largely developed and in consequence an oblique row of large bristles may appear on the tibia as in I, 2. The apical bristles of the tibiae are remarkably constant in num- ber, arrangement and relative size. Although the number of specimens collected by Dr. Smith in the group Muscidre (sens, strict.) is quite small, only thirty-eight, never- theless the collection is very interesting, including eleven genera, of which three are new, and thirteen species of which seven are new. Genus GLOSSINA. Glossina longipennis Corti. Two females taken August 19, 1894, and August 24, 1894. They agree perfectly with Corti's description, except that there are no brown spots on the abdomen. Genus IDIA. Idia lunata Wied. Three females taken September 29, 1894, October 2, 1894, and November 10, 1894. Genus COSMINA. Cosmina sp. ? Female, taken November 10, 1894. Too imperfect to identify or describe. Genus MUSCA. Musca domestica L. Female specimen, taken October 11, 1894. This is a variety with color and markings of abdomen somewhat like the male. The ground color is a dull reddish-brown, on each of the first three seg- ments there is a narrow, median, cephalo-caudal black stripe ; the whole of the ventral surface of all segments and the cephalic half of the dorsal surface of the first segment are rather more yellow than the remainder of the dorsal surface. In color of abdomen the specimen reminds me of a female specimen sent me by Dr. Wm. A. Nason, in which the abdomen had the color and markings of the male. Structurally the specimen is identical with domestica although it has, to be sure, five dorso-central bristles behind the suture, but 1898.] NATURAL SCIENCES OF PHILADELPHIA. 173 tliia number occurs occasionally in otherwise normal specimens both of domestica and corvina. Musca corvina Fabr. One male taken September 10, 1894. Musca biseta nov. sp. One male and four females, all taken March 10, 1894. Very much like domestica, from which it differs as follows: Male. — Front about one-half as wide as in specimens of domestica with the same width of head. Dorsum of first abdominal segment entirely black. Female. — Front of same width as that of specimens of domestica with same width of head, but the frontal vitta is decidedly narrower and its lateral borders less curved. Both Sexes. — Smaller than the average sized domestica. Geno- vertical plates, genre, bucc?e and vibrissal ridges silvery white, with scarcely a trace of the yellowish tinge which so often predominates in domestica. Only two dorso-central bristles in front of the suture. Bristles of the extenso lateral row of the hind tibia equal or almost equal. No prominent bristle in the extenso-mesal row of the hind tibia. Genus MORELLIA. Morellia podagrica Loew. Two males and one female taken March 10, 1894, and April 10, 1894. Agree perfectly with, but are smaller than, my European specimens of this species. Genus PSEUDOPYRELLIA. Pseudopyrellia sp. ? One male and one female taken March 10, 1894. This is a new species. The specimens are too imperfect to describe fully. The antennal arista has longer, more numerous and more delicate hairs than comicina (American and European specimens), and the female has on the thorax, in front of the suture, a broad, median, cephalo-caudal hoary stripe which fades out before the suture is reached. The distinctness and brilliancy of this stripe vary with the iucidence of light. Of 100 American female specimens of com- icina examined not one has this stripe. The front of the male is much narrower than in comicina. Pseudopyrellia nuda nov. sp. Four females taken March 10, 1894, and September 29, 1894. Length about 8 mm., of a brilliant metallic violet color, varying to bronzy-green. Remarkably few and delicate macrochsetse. 174 PROCEEDINGS OF THE ACADEMY OF [1898. Width of head about 2.4 mm., of front about 0.7 mm. Vitta occu- pies about one-third of the front. The genre and the ventral quarter or fifth of the geno-vertical plates are silvery-white or dead black, according to the incidence of the light, the remainder of the geno- vertical plates, the ocellar prominence and the dorsal half of the posterior orbit are metallic violet or green ; the ventral half of the posterior orbit is silvery white, dead black or with metallic reflect- ions according to the incidence of the light ; the buccse are dead black or metallic violet according to the incidence of the light ; the vibrissal ridges are black with slight metallic reflections ; the frontal vitta is dead black. The bristles of the vertex are as in cornicina; the hairs of the geno-vertical plates (there are no orbital bristles) are as in cornicina, but much less numerous; the bristles of the vibrissal ridges are yellowish-brown and arranged as in cornicina; the buccse are sparsely beset with delicate yellowish-brown hairs. Palpi black or dark brown, dilated at the apices; proboscis black or dark brown, with some metallic reflections. Antenna, 2d joint 0.2 mm., 3d joint 0.6 mm.; color brown, 3d joint lighter than 2d. The whole thorax and abdomen has a finely punctate appearance and is remarkably free from macrocksetse, although quite as thickly clothed with fine hairs as is usual in the Muscidae. Bristles of thorax. — I, 3a, 3b, 3c. Humeral, 1. Dor so-central, 4, 2 in front and 2 behind the suture, the posterior is of good size, the rest are minute. Intra-alar, 1, very small. Supra-alar, 1, very small. Post alar, 2, as usual, of good size. Notopleural, 2, as usual, of good size. Scutellar, apical and two marginal, of good size. Tegulse hyaline ; Halteres pale yellow. Legs. — Femora black or very dark brown, with some metallic reflections. Tibise and tarsi black or very dark brown ; bristles of legs much smaller and less numerous than usual in the Museidse. Fore Leg. — Femur. — Only oneextenso-lateral row of bristles, and this is made up of fewer and smaller bristles than usual. Bristles of flexo-lateral row smaller and much fewer than usual. Tibia. — No prominent bristles except the preapical of extensor border. Middle Leg. — Femur. — The usual rows are present, but the indi- vidual bristles are small, and there are but few of them. The only respectable sized bristle of the femur is the preapical of the poste- rior surface. Tibia. — Anterior surface no bristles at all. Posterior surface. — One prominent bristle at the middle of the tibia and a varying number of other much smaller bristles. Flexor surface. — 1898.] NATURAL SCIENCES OF PHILADELPHIA. 175 One large bristle, about twice as large as the largest of the posterior surface, at the junction of the third and apical fourths, inserted close to the edge of the posterior surface. Hind Leg. — Femur. — The usual rows present but of fewer and smaller bristles than usual. Tibia. — No prominent bristles save one very delicate flexo-lateral. Genus POLLENIA. I might consider the species to be here described as the type of a new genus in deference to the views of Professor Brauer as I under- stand them. He gives as one of the characters of Pollenia: " two orbital bristles in the female." These specimens have from four to six orbital bristles of large size inserted in a dorso-ventral line roughly parallel to the insertions of the trans-frontal bristles and laterad these large orbitalsand parallel to them another row of very small bristles. I am sure that the number of large orbital bristles may vary in individuals of the same species and, therefore, am per- sonally of the opinion that their number is not always a character of generic value, e. g., in our common species of Morellia the num- ber of large orbital bristles varies from two to seven, frequently dif- fering on the two sides of the same specimen. Such being the case, it seems to me that I must include this species in Pollenia since it presents all the characters of that genus except the one mentioned. The woolly hair is present only on the caudal border of the meso- pleura, caudad the row of bristles which protect the root of the wing, a condition often met with in our common P. rudis if the specimen is not fresh. The specimens look as if they had been wet. Pollenia virido-cana nov. sp. Three females taken September 5, 1895. Length about 7.5 mm. ; width of head about 2.2 mm., of front about 0.75, of frontal vitta about 0.25 mm. Looking at the head directly from in front, the height of the eye is 1.3 mm., of the bucca 0.4 mm. The highest point of the vertex is a little higher (about 0.1 mm) than the high- est point of the eye. The third antennal joint is twice as long as the second. The general color of the fly is a dirty greenish-white or gray. On close examination it is seen that the ground color of the thorax and abdomen is a metallic green, but that this is more or less concealed by a thick, whitish, hoary coating. In some lights there seem to be two dorso-ceutral bands on the thorax which are free from this 176 PROCEEDINGS OF THE ACADEMY OF [1898. coating. The anterior femora are of the same colors as the thorax, the middle and posterior femora are dark brown, with here and there suggestions of the green color and hoary coating. The tibiae and tarsi are a very dark brown. Tegulse milky white. Halteres brownish. The gense, geno-vertical plates, ocellar triangle, poste- rior orbits, buecse and vibrissal ridges are dirty white with the usual silky lustre, varying according to the incidence of the light to a pale brown. Frontal vitta pale brown. Antennse: second joint pale brown, third joint darker brown with hoary coating. Bristles of Head. — Inner vertical, outer vertical, greater ocellar, and cilise of posterior orbit as in P. rudis. Lesser ocellar less numerous than in rudis, only three or two pairs. Ascending frontal, one, large. Transfrontal six to eight, mostly decussate over the nar- row vitta. Orbital : a row of four to six large bristles, the inser- tions of which are roughly parallel to the insertions of the trans- frontals ; a second row laterad the large ones and parallel to them composed of very small bristles. Gense bare. Buccse with a series of stout bristles along the edge of the mouth opening and with the remainder of their surface sparsely beset with very fine hairs. Vi- brissal ridges with a very few hairs dorsad the principal vibrissa extending; little or not at all dorsad the ventral end of the arm of the frontal suture. Bristles of Thorax, I, 5a, 5b, 5c. Humeral, 3. Post-humeral, 2. Dorso central, 6, two in front of and four behind the suture. Acrostichals very small, one anterior and two posterior to the suture. Intra-alar, 4, one in front of and three behind the suture ; the most posterior is very small and a little mesad the line of the others. Supra-alar, 3, of which, as usual, the middle one is much the largest. Post-alar, 2, as usual. Notopleural, 2, as usual. Scutellar. — A small bristle of the jugum, an apical, two marginal and a rather small discal. Bristles of Abdomen. — As usual in Muscidre (sens, strict.). The macrochaetse of the head and thorax and nearly all the minute bristles and hairs of the thorax and abdomen appear to be inserted at the centres of little black disc-shaped spots. Bristles of the Legs. — Too imperfect to be described. The only especially noteworthy feature that can be made out is a long, stout bristle at the middle of the anterior surface of the middle femur. This represents, apparently, the anterior median row of bristles of the middle femur that is so universally present in the Muscidse (sens. strict.) aud is so well developed in P. rudis. 1898.] NATURAL SCIENCES OF PHILADELPHIA. 177 Genus LUCILIA. Lucilia spinicosta nov. sp. One male and one female, taken March 10, 1894. Length : about 5.5 mm. (male) and 6.0 mm. (female). Width of head: male 2.0 mm. female 2.2 mm. Width of front: male 0.1 mm. at narrow- est part, females 0.8 mm., vitta of female 0.5 mm. Third antennal joint twice as long as the second. Color. — The usual metallic green of Lucilia? with some hoary re- flections. Legs yellowish-brown, femora much darker than tibiae and tarsi. Tegulae : inferior dark smoky brown almost black, supe- rior hyaline. Halteres yellowish. Genre, geno-vertical plate, pos- terior orbit, buccse and vibrissal ridges silvery-white. Antennae: second joint and base of third yellowish-brown, remainder of third chestnut-brown. Palpi yellowish-brown. Wings hyaline, slightly stained with yellowish-brown toward the costal border. On the costal border of the wing, basad of but very close to the end of the auxiliary vein, is a good sized spine. On both the upper and under surfaces of the wing the third longitudinal vein bears a number of minute spines, those beneath are four or five in number and much more delicate than those above, those above are ten or twelve in number and extend nearly to the small cross vein. Bristles of the Head. — As usual in Luciliae. Bristles of the Thorax. — I, 7a, 7b, 7c. Humeral, 3. Post humeral, 2. Dorso-central, 5, 2 in front and 3 behind the suture. Intra alar, 4, one in front and 3 behind the suture. Acrostichal, 5, 2 in front and 3 behind the suture. Presutural, notopleural, supra alar and post alar as usual. Scutellar, apical, 3 marginal and one discal. Sternopleura and mesopleura as usual in Luciliae. Bristles of Abdomen. — On hind border of second segment a num- ber of small appressed bristles. On hind border of third segment about twelve to fourteen larger and less appressed bristles. On the fourth segment about twelve not at all appressed quite good sized bristles both marginal and discal. In the male these bristles are larger than in the female. Bristles of the Legs. — Fore Leg. — Femur : as usual but dorsal lateral extensor row has only about six members. Tibia : in the lateral extensor row there is in the male, but not in the female, a little basad the junction of middle and apical thirds one rather prominent bristle ; in the lateral flexor row there is one large bristle at the junction of the apical and middle thirds ; in the mesal extensor row 178 PROCEEDINGS OF THE ACADEMY OF [1898. there are no prominent bristles ; in the mesal flexor row there are about four prominent bristles and these are larger in female than in the male. Middle Leg. — Femur : as usual. Tibia : the anterior surface, a little apicad the middle, has one large bristle ; the posterior surface has two rather smaller, one at the middle and one near the apical end of the basal third ; flexor surface has one at about the junction of the middle and apical thirds. Hind Leg. — Femur: as usual. Tibia: the lateral extensor row has from three to five prominent bristles and the mesal extensor row two, of which one is very near the middle and the other in the basal quarter; no prominent bristles in either flexor row. Genus PAROCHROMYIA. The species to be here described would find its place in the table of Brauer and Bergenstamm1 between Ochromyia and Zovochroa. The eyes of the male are very close together but not in contact and the male has no transfrontal bristles above the middle point be- tween the base of the antennas and the vertex. Both sexes have ocellar bristles. Both sexes have abdominal marochsetas at the sides of each segment, on the hind margin of the third segment (appressed and delicate), and on the fourth ; the male also has some on the hind margin of the second but they are more delicate than those of the third. The female has one fair sized orbital bristle at the upper part of the geno-vertical plate and, extending ventrad from this, a series of very delicate, minute bristles or hairs which extend along the whole of the geno-vertical plate and on the gena about half way to the end of the arm of the frontal suture. In Girschner's system I should place this species among the Cal- liphorinse with the description of which it agrees2 except that it has three posterior intra-alar bristles. The sterno-pleural bristles have the arrangement 1-1. I can not make out the arrangement of the second ventral segment. Parochromyia varia nov. sp. Three males and three females, taken March 10, 1894, Nov. 17, 1894, Sept. 3, 1895. A pale yellowish- brown fly about 6.5 to 7.5 mm. long. The wings are notably broad and extend a little beyond the apex of the abdomen. 'Vorarbeiten zu einer Monogr., etc, Pars III, p. 90, (178). 2 Separat-Abdruck aus der Illustrirten Wochenschrift fur Entomologie, Vol. I, 189H, p. 14. 1898.] NATURAL SCIENCES OF PHILADELPHIA. 179 Head. — The antennse, bucca?, genae, vibrissa! ridges, facial fossa and ventral third to half of the geno-vertical plate are all pale yellowish -brown. The remainder of the geno-vertical plate is bluish gray. The frontal vitta is brown with a slight reddish tinge. The posterior orbit differs in the two sexes. In the female it is about 0.1 mm. wide, bluish-gray dorsally and shading off ventrally to pale yellow ; in the male it is narrower, entirely absent along the dorsal third or half of the eye and entirely yellow. In the female the front occupies about one-third of the width of the head and is mostly made up of the frontal vitta the geno-vertical plate being very narrow. Bristles of the head. — Female : — Seven to nine transfrontal of good size and a few small intercalarv, sometimes the larger ones decussate and sometimes not, they extend a little ventrad the insertion of the antennas. Ascending frontal, one. Orbital as mentioned in the generic description. Greater ocellar, of good size, divergent. Lesser ocellar, several pairs all parallel to the greater; one very small pair is situated ventrad the greater, there are several small pairs dorsad the greater and one pair at the dorsal border of the ocellar triangle is half to three quarters the size of the greater. Inner vertical and outer vertical, inserted as usual, equal ; only a little larger than the ascending frontal, larger than the greater ocellar. Post vertical small, erect, parallel to one another, inserted on the occipito-vertical border a trifle caudad the line of the inner verticals. Occipito- central, very small and delicate, inserted very close to the occipito- vertical edge. Occipito-lateral not present. Cilia? of posterior orbit rather sparse but well aligned, extending ventrad to the caudo- ventral angle of the eye. Bucca: vertical diameter as seen from in front nearly one half that of eye ; along edge of mouth-opening a series of large stout bristles, the remainder sparsely beset with min- ute hairs. Vibrissal ridges: a few minute bristles dorsad the prin- cipal vibrissa extending to a point a very little dorsad the ventral end of the arm of the frontal suture. Male: — Transfrontal, as mentioned in the generic description, about seven in number. Inner vertical good sized. Outer vertical absent as is usual in male Muscida?. Greater ocellar much smaller than in the female (the usual thing in Muscida?). Lesser ocellar, quite numerous, some of them almost equal to the greater. Post vertical as in the female. Occipito-central (doubled in one speci- men), cilia? of posterior orbit, bucca and vibrissal ridges as in female. Antenna. — Third joint about twice as long as the second. Arista 180 PROCEEDINGS OF THE ACADEMY OF [1898. longer than second and third joints together, its hairs rather few (about eight above and six below). The exact shade of color varies in different specimens, being sometimes darker and sometimes lighter; in one female the third joint is almost a chestnut-brown. Proboscis and palpi yellowish-brown. ' Thorax. — Color, varying shades of yellowish-brown, darker on the dorsum. On the dorsum, bands of dark brown or bluish-gray, vary- ing much in width in different specimens (in one male none at all). A dark spot on the middle of the scutellum in all the females and iu one male. Bristles of the Thorax, \, 9a, 9b, 9c. Humeral, 3. Posthumeral, 3, outermost on a level ventrad the presutural. Dorso-central, 6, two in front and four behind the suture. Intra-alar, 4, one in front and three behind the suture. Acrostichal, 6, three in front and three behind the suture. Presutural, notopleural, supra-alar and post-alar as usual. Post-sutural, I venture to apply this name to a bristle, present in all the specimens of this species, which I have not been able to find in any other Muscids that I have seen. It is situated caudad the transverse suture of the thorax, a little mesad and cau- dad the anterior supra-alar, and laterad the intra-alar No. 3 (I num- ber the intra alars, dorso-centrals and acrostichals from the caudal end of the thorax cephalad, thus the intra-alar nearest the scutellum is No. 1). Scutellar. — Apical, three marginal, jugal, two discal of which the anterior is considerably the larger. Abdomen. — Color : Principally yellowish-brown; of varying shade in different specimens. There are also some very dark brown, al- most black, markings as follows : on the first segment a very nar- row band on the hind margin ; on second segment a broader band and a median mark, (1, 11) the width of the band and the size of the mark varying considerably ; third segment like second, but the band broader and the mark larger, so that in some specimens almost the whole segment is dark brown or black : fourth segment entirely black or dark brown. Bristles. — There are bristles on the hind borders of the first three segments. Toward and at the sides of the segments the bristles are larger than toward the middle. All are more or less appressed. Those toward the middle can hardly be called macrochaetae until we reach the third segment. On the fourth there are some discal as well as marginal macrochaetae, and they are none of them ap- pressed. 1898.] NATURAL SCIENCES OF PHILADELPHIA. 181 Legs. — Color: Yellowish-brown. Bristles: Fore-leg, femur, as usual. Tibia, lateral flexor row has one large bristle at the junction of the middle and apical thirds, mesal extensor row has from four to six rather small bristles about equal and equi-distant, extending from very near the base to very near the apex. Middle leg : Femur, as usual, but the anterior median row is represented by only one bristle of good size which is situated just at the middle of the femur. On the whole, the bristles of this femur are rather few. Tibia : An- terior surface, one large bristle at junction of apical and middle thirds ; posterior surface two, rather smaller at junction of basal and middle, and middle and apical thirds respectively; flexor surface one, rather small at junction of apical and middle thirds. Hind'leg : Femur, as usual. Tibia, mesal extensor row has usually two promi- nent but not very large bristles situated respectively at the junction of the basal and middle, and middle and apical thirds (sometimes the former is absent) ; lateral extensor row has a considerable but varying number of unequal but almost equidistant bristles extend- ing from base to apex ; lateral flexor row is represented by only one bristle situated at the junction of the apical and middle thirds. Genus SOMALIA. There is but a single specimen, and that a female of the species on which I found this new genus, but the characters are so pro- nounced that I have no hesitation in so doing. In the table of Brauer & Bergenstamm3 this genus would fall in the group with Dasyphora, except that it has but one large orbital bristle. It dif- fers, however, from Dasyphora in several points: (1) the sterno- pleural bristles have the arrangement 2-1, instead of 1-3 ; (2) there is a row of bristles on the hypo-pleura ; (3) the third joint of the antenna is much shorter as compared with the second ; (4) the out- line of the arista as a whole is much narrower, and its hairs are less closely set; (5) the eyes are only minutely hairy with a magnifica- tion of twenty diameters; (6) the post-vertical bristles are very small, while in Dasyj)hora they are large. In Girschner's classification the new genus stands far away from Dasyphora in the 6th or 7th group of his Tacbinidse. Somalia enigmatica nov. sp. One female, taken October 11, 1894. ' Vorarb. zu Monog. Muse. Schiz., Part III, p. 90 et seq. 182 PROCEEDINGS OF THE ACADEMY OF [1898. Length about 8.0 mm. Width of head 2.5 mm., of front 0.9 mm. (vitta 0.5 mm., geno- vertical plates each 0.2 mm.). Looked at squarely from in front the dorso-ventral diameter of the head is 2.3 mm., the vertex extends 0.1 mm. dorsad the eyes, the dorso-ventral diameter of the eye is 1.5 mm., of the bucca 0.7 mm. Third anten- nal joint about li times as long as the second. General color pale olive-green with a hoary coating, legs a yellowish-brown, except that the third, fourth and fifth tarsal joints and the apical part of the second are black. On the thorax, in front of the suture, are two narrow bands, one on each side, between the acrostichal and dorso- central bristles, which have no hoary coating ; these bands broaden cephalad and unite at the cephalic border of the thorax. On the second, third and fourth abdominal segments there is a narrow, median, cephalo-caudal dark brown stripe not represented in the diagram, I, 13, which shows also the arrangement of the abdominal bristles. Head. — Color : Genae, geno-vertical plate, facial fossa, vibrissal ridges, posterior orbits and ocellar prominence silvery ; vitta dark brown; bucca olive; transverse impression of the face yellowish- brown with silvery coating. Second joint of antennse yellowish- brown, third joint darker with a hoary coating. Palpi yellowish- brown. Proboscis black. Bristles: Trans-frontal, about eight, of which the ventral four or five are of good size and inserted close together, the rest small and scattered. Ascending frontal, one, large. Orbitals, one large at about the junction of the dorsal and middle thirds of the front and one exceedingly minute a little dorsad the large one, no others at all. The bristles at the vertex are somewhat injured, and I can only say that the inner vertical, outer vertical, greater and lesser ocellar, post-vertical (very small), and ciliae of the posterior orbit are present ; nothing unusual can be made out in regard to them in this specimen. Gense naked. Bucca? distinctly separated from the vibrissal ridges ; parallel to the edge of the mouth-opening and a little distance from it is a row of coarse bristles ; near the cephalic end of the bucca about as far dorsad the large bristles of the mouth- edge as they are from the mouth edge itself, are two stout bristles about equal in size to those of the mouth edge ; the rest of the bucca is rather sparsely beset with minute bristles and hairs. Vibrissal ridges : The principal vibrissa and the vibrissal angle are close to the edge of the mouth opening; dorsad the principal vibrissa there 1898.] NATURAL SCIENCES OF PHILADELPHIA. 183 are only a few minute bristles not extending as far as the ventral end of the arm of the frontal suture; ventrad the principal vibrissa are four lesser vibrissa inserted along the edge of the mouth opening as far as the cephalic end of the bucca. Thorax. — Color, as mentioned above. Halteres yellow. Tegulse hyaline, milky white toward the edges. Bristles, I, 15a, 15b, 15c. Humeral, 2. Post humeral, 1, on a level dorsad the presutural. Dorso-central, 5, two in front and three be- hind the suture. Intra-alar, 3, none in front of the suture. Acros- tichal, 2, one in front and one behind the suture, both small. Presu- tural, notopleural, supraalar and postalar as usual. Scutellar : apical, two submarginal and one small discal or subapical. Mesopleural. At the dorso-cephalic angle is a group of little hairs, among which two are more prominent than the rest, and per- haps deserve to be called bristles, an arrangement recalling the prominent bristle in this situation which is so constant in the genera Morellia, Muscinia, Musca, Myospila and their allies. As usual, there is a large bristle just ventrad the prostigma, a little ventrad and caudad this bristle is another, much smaller but decidedly promi- nent, which I have not found in any other Muscid. Stemopleural. Two in front and one behind. Pteropleural and hypopleural present. Wing. Venation shown in the figure. On the third longitudi- nal vein are about ten little spines quite regularly distributed from the base to near the small cross vein. There is a costal spine just basad the end of the auxiliary vein. Ventral surface of abdomen. No ventral membrane ; second ventral segment overlaps the edges of the corresponding dorsal, all the other ventral segments are overlapped by the corresponding dorsal. ii. Bristles of the Legs. — Anterior femur as usual. Anterior tibia : ateral flexor row has one large bristle at the junction of the middle 184 PROCEEDINGS OF THE ACADEMY OF [1898. and apical thirds; mesal extensor row has three prominent bristles as arranged in II, 1. Middle femur has one large bristle at the middle of the anterior surface, a few bristles in the flexor row of each surface, and on the posterior surface a subapical transverse group of three. Middle tibia has one on the anterior, II, 2, three on the posterior, II, 3, and one on the flexor, II, 4, surface. Poste- rior femur as usual. Posterior tibia has four on the lateral surface (two flexor and two extensor, II, 5), and two on the mesal surface 11,6. Genus PARACOMPSOMYIA. Very close to Compsomyia. In the table of genera of Brauer and Bergenstamm it would fall with Compsomyia from which it differs as follows : wings not hyaline but, toward base and costa, black or very dark brown ; thorax without longitudinal black stripes ; the vibrissal angles are not as far dorsad the mouth edge as in Compsomyia-, there are no vibrissa? ventrad the principal vibrissa; the orbital bristles are much smaller than in Comjisomyia and are directed laterad instead of ventrad ; the sterno pleural bristles are 1-1 instead of 2-1. Paracompsomyia nigripennis nov. sp. Four females, taken August 23, 1894. Large metallic blue, violet or green flies with yellow heads, black legs and with the costal border and basal half of the wings black or very dark brown. Length of body 11 to 12 mm., of wing 10 mm. Width of head 5 mm. ; of front 1.7 mm. at base of antennse, 1.8 mm. at vertex ; fron- tal vitta 1 mm. at widest point, 0.7 mm. at base of antennse. Looked at squarely from in front the dorso- ventral diameter of the head (height) is 4.2 mm., the vertex extends 0.2 mm. dorsad the dorsal border of the eyes, the dorso-ventral diameter of the eye is 2.5 mm., of the bucca 1.5 mm. The second antennal joint is 0.3 mm. long, the third is 1.1 mm. Head. — Color : — dorsal two-thirds of geno- vertical plate is polished ferruginous, the ventral third as also the gena?, buccoe, vibrissal ridges and facial fossa are a paler, yellowish-brown with a thin hoary coating. Vitta ferruginous. Antenna? yellowish-brown. Ocellar prominence and an adjoining triangular area of varying size at the dorsal part of the occiput ferruginous to yellowish-brown varying in different specimens. Posterior orbit silvery. Palpi yellow. Proboscis dark brown to black. 1898.] NATURAL SCIENCES OF PHILADELPHIA. 185 Bristles. — Inner vertical and outer vertical of good size, inserted as usual. Post vertical very small, inserted a little caudad the line of the inner verticals. Occipito-central replaced by a number of minute bristles. Cilia? of posterior orbit as usual, well aligned, rather small. Greater ocellar very small, divergent, pointing almost directly laterad. Lesser ocellar exceedingly minute, numerous, in four to six rows, occupying nearly the whole of the ocellar promin- ence and extending caudad to or nearly to the line of the inner ver- ticals. Ascending frontal, one, parallel to the outer vertical, in- serted on a level with the greater ocellar some distance laterad the line of insertion of the transfrontals halfway between that line and the lateral border of the geno-vertical plate. Transfrontals ten to twelve, small, non deccusate. Orbitals two, very small (0.2 to 0.3 mm. long), curved laterad instead of ventrad as usual, inserted v^ * ' r ^ 1 • _< 1 l 1 » \\ . 1 < 4 » < ...J • /v arion (PI. XI, fig. 33) the gut is long and spirally wound. In Prophysaon (PL XI, figs. 28- 30, 32, 34), Anadenulus (fig. 35), Hemphillia (fig. 36) and Binneya (fig. 31) it is much less twisted spirally. In the latter two genera the posterior loop formed by G3 and G4 is very short, on account of the crowding forward of the viscera into the dorsal hump. In Prouhysaon, Anadenulus, Hemphillia and Binneya there is no differentiation of the first fold into crop and stomach, such as occurs in Ariolimax, etc. Reproductive organs. — In the Arionidoz there are two main types of genital organs. In the more primitive and normal type there is a well developed penis provided with a retractor muscle, and in every way homologous with the same organ in the Helices and pul- monate snails generally. This may be seen in Ariolimax, Hesper- arion (PL XII, figs. 44, 47), Binneya, Hemphillia, and the Himal- ayan genus Anadenus. In the slugs, as well as in many other snails, the terminal portion of the vas deferens is noticeably enlarged, often considerably swollen for a distance above its insertion in the penis (see PI. XII, fig. 49, epi., Hemphillia ; and these Proceedings, 1896, PL XIV, fig. 14, epi., Ariolimax). This enlarged tract has 5 In Aphallarion there is a short loop interposed between the second and third long folds, making six folds. See P. A. N. S., 1S96, pi. 13, f. 4. 6 P. A. N. S., 1896, PI. 13, f. 3. 1898.] NATURAL SCIENCES OF PHILADELPHIA. 223 been called the " epiphallus." In the other type, to which Avion, Geomalacus, Prophysaon and Aphallarion belong, the penis has been lost through degeneration, and the vas deferens enters the atrium directly, its lower course being enlarged or modified in various ways (PI. XIII, all figs.) as described above, into an epiphallus.7 The epi- phallus is not evertibie, has no retractor, and does not have the function of a penis. In it the sperm is lodged in packets or " sperm- atophores." These, in Hesperarion and Prophysaon, are oblong, narrow capsules of chitinous texture, with a loug, slender filament at one end (PI. XII, fig. 43). They may occasionally be found in the spermatheca (PI. XII, fig. 48, where the outlines of several are faintly visible through the wall). In genera with this type of geni- talia the vagina and lower portion of the free oviduct are introvert- ible, and assume the function of the penis, being provided with a retractor or retractors; and in some genera, such as A Hon, the spermatheca duct also has a retractor muscle. In forms having the spermatheca duct inserted directly upon the atrium, there is, of course, no vagina, and the free lower portion of oviduct alone acts as penis.8 The peculiar enlargement of the epiphallus in Prophy- 7 The term epiphallus was originally proposed some years ago by the senior author of this paper for the structure as commonly found in such Hclicidte as the West Indian Caracolus and Pleurodonte species, and in most of the larger East Indian and Australian forms, in which it occurs associated with a well- developed penis, as in Hesperarion, etc. It is strictly synonymous with Sim- roth's term "Patronenstrecke." Mr. Collinge (Proc. Zool Soc. Lond., 1897, p. 447) proposes to substitute "sperm-duct" for what we term epiphallus, and restrict the latter name to '' the terminal portion of the vas deferens above the sperm-duct." There is, of course, no objection to the substitution of an English name for the Greek compound, but since the term epiphallus has already been used in extensive and numerous works in America, England and Germany, it seems a little revolutionary to completely alter its significance. If Mr. Collinge wants a term for the vas deferens above the epiphallus, he had better, to avoid confusion, invent a new one ; though what he wants it for is not quite apparent. 8 Arion is a case in point, cf. Collinge, Proc. Zool. Soc. Lond., 1897, p. 447. Geomalacus also is similar. In Prophysaon and Aphallarion however, it is the vagina proper which performs both its usual function and that of an evertibie penis. We consider Mr. Collinge's statement (/. c. ) that ''Messrs. Pilsbry and Vanatta have suggested the term * * * vagina for what I term free- oviduct " as an inadequate representation of our position, due, no doubt, to our inadvertent enumeration of Arion as one of the genera in which the vagina functions as a penis. We use the term "vagina" for the passage below the union of the spermatheca duct with the free oviduct proper (see PI. XIII, fig. 57, vag. ), considering such usage justified by its functions. The term " free oviduct" will naturally be retained for the passage from the apex of the va- gina (when present) to the point of approximation of the vas deferens. Mor- phologically, the vagina may be regarded as an elongated portion of the atrium. 224 PROCEEDINGS OF THE ACADEMY OF [1898. saon is not hollow like a penis, but has a small duct only, the walls being solid and muscular. The remaining organs do not differ from their usual structure in Aulacopod pulmonates, although the position of the ovotestis is varied in the several genera. Muscles. — Only the muscles lying free in the body cavity, not those composing the external walls or sole, will be considered herein, the latter being morphologically similar in Arionidce to the other land snails. The free muscles belong to two groups : (1) retractors of the buc- cal mass, eye-peduncles and tentacles, and (2) retractors of the generative organs. The buccal and tentacle retractors, with the foot retractor or re- tractors in ordinary spiral-shelled snails converge and are attached posteriorly or proximally to the columella of the shell. In Limacid or Arionid slugs the degenerate shell no longer serves as a support for these muscles, which are inserted at or near the posterior margin of the diaphragm, or floor of the lung ; this position approximating pretty closely to the posterior or former columellar margin of the vestigial shell. In the more primitive genera, Binneya, Hemphillia, Ariolimax, etc., the retractors still converge to a point near the middle of the back margin of the lung, under the posterior edge of the shell (PI. XIV, figs. 65, 66, 67, 69, 71). In the more divergent genera Avion (PI. XIV, fig. 72) and Prophysaon (PI. XIV, fig. 70), the eye and tentacle retractors have moved from the middle to the outer posterior angles of the diaphragm. The convergent retractors of Ariolimax and its allies are a heritage from the spiral-shelled an- cestors of the family, although the utility of the convergence is no longer present ; while the parallel retractors of Avion, etc., are a later modification which resulted in a straight backward pull of each retractor, independent of the others, and possibly brought about mechanically by the tendency toward separation of the grouped proximal insertions by strains on the converging muscles from their separated distal terminations. Another muscle more or less closely associated with the buccal and tentacle retractor system, is found in Ariolimax, Hemphillia and allied genera (PI. XIV, figs. 65, 66, 69). This is a band passing from near the proximal insertions of buccal and eye retractors forward across the diaphragm to an insertion in the top or right side of the head. It has been termed the " reten- sor " by Simroth, who observed it in Ariolimax Calijornicus, and 1898.] NATURAL SCIENCES OF PHILADELPHIA. 225 supposed it to be an aid to the extension of the penis. We scarcely endorse this view of its function, after observing it in several other genera in which it is not inserted near the atrium, but in the integ- ument of the head or back above. It may aid in withdrawing the head beneath the mantle. Morphologically this muscle is regarded by Simroth as a slip detached from the body-wall. In this, again, we are compelled to dissent. We regard it as a retractor pedis, the anterior insertion of which has moved from the sole to the side or upper integument. Pendiug further investigation into its physiolo- gic function and morphologic equivalency, we continue to use Sim- roth's name " retensor " for this muscle. The retractors of the genitalia are far less constant in form, num- ber and position than those of the buccal mass and eyes. Their proximal insertions here, as in the spiral snails, are on the diaphragm or lung floor. The chief muscles of this system are the penis retrac- tor (PI. XIV, figs. 66, 71 r.p.), which is almost invariably inserted on the left side of the diaphragm, and the oviduct retractors (PI. XIV, fig. 67, vag. r.), which may be inserted either upon the diaphragm or at its posterior border. The latter are well developed only in those genera in which the oviduct or vagina has assumed the function of a penis. In Avion and Geomalacus the sperm atheca duct also has a retractor. The several retractors of the female or- gans are quite inconstant in position and number (being often in- creased by splitting). They are not homologous with the penis re- tractor, but have been developed de novo in the genera requiring them. Another muscle deserving mention is a short band uniting the swollen epiphallus to its peduncle, in the genus Prophymon (PI. XIII, fig. 57, muse). This muscle so conceals the true structure of base of the epiphallus that no former authors with the exception of Simroth, have correctly described or represented it. Pallial region. — Underlying9 the retractor muscle system is seen a thin but dense membrane perforated only by the aorta and the rectum. This is the " diaphragm " separating the body cavity from that of the lung (indicated in outline in the figures on PI. XV). Removing the diaphragm, the inner surface of the lung is exposed, densely reticulated with blood vessels (PI. XV, fig. 73). The breath- ing pore or pulmonary aperture (PI. XV, fig. 77, p. a.) is situated at 9 The slug being pinned back downward in the dissecting pan. In the natural position of the animal it overlies the muscles. 226 PROCEEDINGS OF THE ACADEMY OF [1898. the middle of the right margin of the lung cavity in some genera (Ariolimax, Aphallarion, Hesperarion), at the right anterior angle in others {Avion, Prophysaon). The rectum lies along the right side, posteriorly, and opens at the breathiug pore (PI. XV, figs. 73, etc., r). Lying in the lung cavity, and often almost filling it, is the kid- ney (PI. XV, figs. 76, 77, 80, etc., k). It is rounded or squarish in shape, thick, and attached by its upper side10 to the roof of the lung cavity around the heart and toward its posterior side. The kidney appears variously striated or shows branching ducts (as in PI. XV, fig. 74). Its secretion is voided through a slender duct the (second- ary ureter, PI. XV, u. r) emerging posteriorly toward the right side, running parallel to the rectum, and opening near the edge of the breathing pore. The characters of the ureter are insufficiently shown in the figures. Behind the middle of the kidney there is an excavation perforating it, occupied by the heart (PI. XV, a. v.). In some genera both chambers of the heart are exposed below ; in others only the ventricle. Only in Aphallarion are both auricle and ventricle concealed by a thin outer layer of the kidney. We have occasionally observed a portion of the kidney protruded tongue-like from the breathing pore in drowned specimens of large species. The morphology of these organs is not greatly varied among the genera of Arionidse, and need not be farther considered here. In defining the families of Pulmonata, these organs give characters of great value. II. CLASSIFICATION. The generic characters of slugs in general, and of Arionidse in particular, as given in the standard manuals and faunal monographs, are of the most superficial character. With a single conspicuous, exception,11 we do not know of any writer who has given evidence of much insight into or comprehension of the meaning of the varied internal structure of slugs, or who has even suggested a phylogenetic arrangement of the genera of Arionidre. The complete classification of this and related families cannot be presented here without unduly extending the limits of this paper by including information upon the Old World genera ; but so far as the Arionidae are concerned, the essential outlines may be gathered 10 Or, as the preparation lies, its lower side. 11 Need we mention the brilliant author of Die Nachtschnecken der Portu- gesisch-Azorischen Fauna? 1898.] NATURAL SCIENCES OF PHILADELPHIA. 227 from the table below, as all of the subfamilies are represented by American genera. Analytical key to subfamilies and genera. I. Retractor muscles of pharynx and tentacles converging back- ward, their posterior insertions contiguous, inserted at the pos- terior edge of the diaphragm. a. Tail solid, the viscera crowded forward and elevated into a dorsal hump or visceral dome ; shell partly or wholly ex- posed ; penis present, with retractor muscle ; ovo-testis posterior in the body-cavity ; intestine short and simply folded ; an accessory " retensor " muscle developed. Subfamily BINNEYINiE. b. Shell exposed, spiral, Vitrina-shaped, with differen- tiated, lirate or costulate nepionic whorl ; mantle with small lobes on each side of the breathing orifice ; sole distinctly tripartite ; genitalia with accessory organs, the penis retractor inserted on the diaphragm ; -retensor muscle short, slender, toward the right side ; buccal retractor shortly bifurcate anteriorly. BlNNEYA. b' . Shell partially exposed, a flat or convex, non-spiral plate ; no lobes on the large mantle ; sole not in the least tripartite; genitalia without accessory organs, the penis retractor muscle inserted on the " retensor," which is strong, wide, and to the left of the buccal retractor, the latter not bifurcate anteriorly, Hemphillia. a'. True slugs, the foot excavated throughout, the body-cavity (and viscera) extending to the tail ; shell small, flat, not spiral, wholly buried ; ovo-testis anterior to the posterior loop of intestine ; intestine long, spirally twisted ; inner cusps of outer lateral and inner marginal teeth much lengthened ; pharynx retractor deeply bifurcate anteriorly. Subfamily ARIOLIMACLN.E. b. A well-developed " retensor " muscle present ; geni- talia with no appendicula, the ovo-testis anterior in position; tail with a "plug" in the caudal pore. Large slugs. 228 PROCEEDINGS OF THE ACADEMY OF [1898. c. No penis nor penis retractor muscle, the vagina assuming its function ; a small epiphallus ; right eye retractor not passing between male and fe- male branches of genitalia, Aphallarion. c'. Penis large, introverted apically, with well-de- veloped retractor muscle ; right eye retractor involved between male and female branches of genitalia, Ariolimax. b'. No retensor muscle; an appendicula on the atrium ; penis simple, with apical papilla and a well-devel- oped retractor muscle ; caudal pore an open pit ; foot-margin wide. Slugs of moderate size, Hesperarion. II. Retractor muscles of pharynx and tentacles running parallel, the latter inserted proximally at the outer posterior angles of the diaphragm; (in American genera the penis and its retractor muscle wanting, the free oviduct or the vagina assuming its function) ; epiphallus variously modified. True slugs, with com- pletely buried shell plate or vestige, and visceral cavity extend- ing into the tail. Subfamily ARIONIN^E. a. Retractor muscle of the pharynx inserted proximally de- cidedly behind the posterior edge of the diaphragm ; intes- tine long and strongly twisted spirally, the stomach, or posterior loop formed by G1 and G2, lying behind the loop formed by G3 and G*; kidney ring-like, exposing both chambers of the heart from below. b. Epiphallus slender, tapering distally, not abruptly bent or constricted near the atrium ; spermatheca duct inserted upon the atrium; free oviduct func- tional as a penis; ovo-testis extending behind the intestine ; external integument longitudinally rugose ; sole more or less visibly tripartite ; a mucous gland at the tail ; breathing pore decidedly anterior to mid- dle of mantle, the genital orifice below it, Arion. a'. Retractor of the pharynx inserted at the posterior edge of the diaphragm ; intestine shorter, not much twisted spir- ally, the stomach, or posterior loop formed by G1 and G2, lying far anterior to the posterior loop formed by G3 and G4 ; external genital orifice anterior, near right tentacle. 1898.] NATURAL SCIENCES OF PHILADELPHIA. 229 b. Sole not in the least tripartite ; posterior portion of the tail peculiarly modified and capable of self-ampu- tation ; kidney with a large excavation exposing both chambers of the heart ; epiphallus more or less swol- len, suddenly constricted and bent near its insertion in the atrium, with which it communicates byashort pedicel which is bound to the swollen portion of epi- phallus by a muscular band ; vagina functional as a penis ; ovo-testis lying in front of the posterior loop of the gut, Peophysaon. b'. Sole tripartite, the narrow median field defined by longitudinal grooves ; tail normal ; kidney covering the auricle (seen from below) ; genitalia unknown, Anadentjlus. iii. descriptions of genera and species. Genus BINNEYA J. G. Cooper, 1863. Binneya Cooper, Proc. Cal. Acad. Sci., Ill, p. 62. Xatitkonyx Crosse & Fischer, Joum. de Conchyl.. XV, 1867, p. 223; Moll. Terr, et Fluv. Mex., I, p. 192. Strebel & Pfeffer, Beitrag zur Kenntniss der Fauna Mexikanischer Laud- und Siisswasser Conch vlien, Theil IV, p. 26 (1880). Somewhat slug-like, with elevated, subspiral visceral hump and external shell, subcentral on the back ; mantle broadly produced beyond the shell, not reflexed over it at edges ; breathing pore sub- median or behind middle of right margin of mantle, a small rounded left and somewhat larger right cervical mantle lobe on each side of it; genital orifice behind the right tentacle; foot radially grooved and reticulate above, the foot-margin narrow ; pedal grooves deep, without a tail pore ; sole tripartite, the areas separated by longitudi- nal grooves; shell Vitrina-shaped, with the first (nepionic) whorl distinctly demarked from the following, and strongly sculptured. Viscera elevated into the dorsal hump, the body cavity not ex- tending back of it into the tail, which is solid. Jaw arcuate, with numerous ribs denticulating the basal margin. Radula with 28-1-28 to 31-1-31 teeth (in B. notabilis), 32- 1-32 (in B. cordovan us), the rachidian teeth tricuspid, laterals bi- cuspid, the ectocones small ; marginal teeth bicuspid, the inner cusps moderately long, sometimes bifid. Intestinal tract (PI. XI, fig. 31) short; anterior loop formed by G2 and Gs somewhat twisted, posterior loop of G3 and G* straight 230 PROCEEDINGS OF THE ACADEMY OF [1898. and" very short. Liver occupying posterior portion of dorsal hump and spire of shell. Genital system with well-developed penis continued beyond inser- tion of retractor in a short epiphallus. Spermatheca with a long duct or one of quite moderate length ; an appendicula near the base of vagina or penis, and, according to Pfeffer, two long-stalked, globose, netted vaginal accessory appendages. Muscle system (PI. XIV, fig. 65) Ariolimacine. Buccal and eye retractors converging posteriorly, contiguous at their proximal in- sertions. A " retensor " arises from the roof of visceral cavity slightly anterior to proximal insertion of retractors, and extends anteriorly to the right side near the lower edge of mantle, where it is inserted in the integument. Penis retractor inserted in the left posterior region of -the visceral dome. Distribution, Santa Barbara Island, off California, Guadalupe Is- land, off Lower California (B. notabilis), and States of Vera Cruz and Chiapas, Mexico (B. Salleana, Cordovana, Sumichrasti, Chia- pensis). The chief differences between Binneya and Xanthonyx seem to be that in Binneya the nepionic shell is spirally lirate, in Xanthonyx radially plicate ; in Xanthonyx there is a small caudal horn, in Binneya none; and there are certain discrepancies in the details of genitalia as described by Binuey, Crosse and Fischer, and Strebel and Pfeffer. These may, perhaps, be in part merely specific varia- tions, and in part errors of observation. On account of the sexually immature condition of our specimens we unfortunately cannot verify the published accounts. The description of the anatomy of Xan- thonyx Salleanus given by Strebel and Pfeffer seems to be worthy of confidence. Binneya agrees with Hemphillia in the solid tail, the viscera being crowded forward into the dorsal hump ; in the exposed shell, short and simple gut; the general arrangement of muscles, especially the possession of a " retensor " ; in the well developed penis, and general system of external reticulation. It differs from Hemphillia mainly in the better developed spiral shell, the differently placed retensor muscle and penis retractor, the presence of an appendicula, and the distinctly tripartite sole. That the two genera are closely allied is so obvious as to justify the supposition that Hemphillia descended from a slug very similar to the existing Binneya. Cryptostrakon W. G. B. is probably allied to Binneya, but the 1898.] NATURAL SCIENCES. OF PHILADELPHIA. 231 muscles, genitalia and alimentary canal are unknown, and the types though in alcohol, have been dried. B. notabilis J. G. Cooper. PI. XIV, figs. 63, 64, 65 ; PI. XVI, figs. 87, 88. Binneya notabilis J. G. Coop., Proc Cal. Acad. Sci., III, p. 62, figs. 15, in text. Tryon, Amer. Journ. Conch., II, p. 244, pi. 3, f. 4 (copied from Cooper). W. G. Binney, Land and Fresh-water Shells of N. A., I, p. 68, f. 112. Terr. Moll., V, p. 245, f. 141-143; pi. V, f. K (teeth), pi. xi, f. B (genitalia). Man. Amer. Land Shells, p. 10S, f. 71-74. Fourth Supplement to Terr. Moll. V, p. 184, pi. 1, f. 9 (shell). Alcoholic specimens measure about 10 mm. long to double that length ; color buff-gray with rather large black dots mainly scattered along the radial grooves of the foot and in a line above the pedal grooves, the mantle maculated with black. Surface with rather coarse radial grooves and sparse reticulation ; a fine groove median on tail above, not extending to the end ; foot margin narrow, closely and evenly crenate ; sole unicolored grayish, rugose and distinctly tripartite. Jaw (PI. XVI, fig. 87) and dentition (PI. XVI, fig. 88) described above. Digestive and muscular anatomy described above. Our spec- imens were sexually immature, so that the description of genitalia is taken from Binney, Crosse, Fischer, Strebel and Pfeffer. Distribution : Santa Barbara Island, off California ; Guadalupe Island, off Lower California. Genus HEMPHILLIA Bland & Binney, 1872. Hemphillia Bland & Binney, Ann. Lye. N. H. of N. Y., X, p. 208 (1872), type H. glandidosa B. & B. Slug-like, with the mantle conspicuously elevated (in alcoholic specimens) into a nonspiral visceral hump; the shell a slightly convex, non-spiral plate partially exposed, its edges buried in the mantle, which is very broadly produced beyond the shell on all sides. Breathing pore behind the middle of right margin of mantle. Genital orifice behind the right tentacle. Foot radially grooved and reticulate above, the foot margin wide, conspicuous ; pedal furrows deep, meeting in a mucous pore at the tad, or without tail gland. Sole not in the least tripartite. Viscera elevated into the dorsal hump, the body-cavity not extend- ing back of it into the tail, which is solid. Jaw low, wide, with about 14 low wide ribs with shallow intervals, Radula with tricuspid central, bicuspid lateral and marginal teeth, the inner cusp (mesocone) of the latter long. 232 PROCEEDINGS OF THE ACADEMY OF [1898. Intestinal tract short, crowded forward, but little twisted ; G* angularly bent, forming a sort of fifth fold (PL XI, fig. 36). Genital system with well developed penis containing penis-papilla, the retractor terminal; passing into an epiphallus. Spermatheca on a short duct, inserted in atrium ; ovotestis at posterior end of vis- ceral cavity, immediately under hind end of shell. Muscle system Ariolimacine, the eye and buccal retractors con- verging posteriorly, contiguous at their proximal insertions; buccal retractor spreading where it enters buccal mass, not bifurcate. A broad " retensor " muscle arises at the posterior margin of diaphragm just left of the retractor insertions, and runs forward as far as the front insertion of the mantle (PI. XIV, fig. 69, ret.). Penis retrac- tor inserted proximally on the ventral face of the retensor. Right eye retractor passing between male and female branches of the genitalia. Lung radially striate rather than reticulate. Kidney a broad squarish leaf, free for the greater part, adnate dorsally around the heart, (PI. XV, fig. 78). Distribution : Oregon, Washington and western Idaho. Hemphillia shares with all Ariolimacinoz the primitive arrange- ment of the retractor system. Like all of this subfamily except Hesperarion it possesses that anomalous muscle called by Simroth the " retensor," which we hold to be a modified retractor pedis. Apart from these important characteristics of the musculature, there are profound differences from Ariolimax and its allies : the viscera are crowded forward and upward into a visceral hump under the mantle, behind which the foot is solid, as in the spiral-shelled snails; the shell is comparatively large and imbedded only at the edges in the mantle, which exposes a considerable part of it ; and the intestinal tract, while fundamentally of the same type, is con- siderably shortened and simplified. In all of these departures from the normal slug structure, Hemp- hillia is akin to Binneya; but it is a more advanced evolution-pro- duct, in that it has lost the spiral torsion of the visceral mass and shell, still retained by Binneya as a reminiscence of long past ances- tors. Among the secondary characters separating Hemphillia from Binneya may be mentioned the tripartite sole, narrow foot margin, and small mantle lobes of Binneya, the other genus having no divis- ion of the sole, no mantle lobes and a wide foot margin. Internally, 1898.] NATURAL SCIENCES OF PHILADELPHIA. 235 Binneya has an appendicula, the penis retractor is inserted on the lung floor, and the retensor muscle is weak, while in Hemphillia there is no appendicula and the penis retractor is inserted on the surface of the very broad and strong retensor. The digestive tract is considerably alike in the two genera. Key to species of Hemphillia. a. Mantle papillose; tail acutely keeled above, terminating in a fleshy horn which overhangs the caudal pore ; pedal furrows scarcely rising at their union behind. Penis with a bifid inter- nal process inserted at the apex of the cavity ; spermatheca glob- ular, on a comparatively slender duct; penis retractor muscle inserted upon the epiphallus, H. glandulosa. a. Mantle slightly rugose, not papillose ; no horn at tail ; pedal grooves abruptly rising behind, meeting over the tail. Penis with a simple fleshy process inserted at the base of the cavity ; spermatheca small with a very stout duct ; penis retractor muscle apical on penis, H. camelvs. H. glandulosa Wand & Binney. PI. IX, figs. 1,2; PI. XII, figs. 49, 50. Hemphillia glandulosa Bland & Binney, Ann. Lye. Nat. Hist, of N. Y. , X, p. 209, pi. ix, f. 1, 3 (exterior), 5 (shell), 15-17 (teeth), Terr. Moll., V, p. 248, f. 144-140, pi. y, f. J (teeth), pi. xii, f. J, K (genitalia) ?. Man Amer. Land Shells, p. Ill, f. 75-77 (78?). Supplement toT. M., V, pi. iii, f. H (?). Third Supplement, p. 211, pi. iv, f. D. Pilsbry & Vanatta, Nautilus XI, p. 44. Color in alcohol blackish above, or yellowish with black spots ; the edge of mantle, sides of foot below mantle, foot-margin and sole yellowish ; shell yellow. Mantle extension densely papillose in; front of the shell and at sides. Breathing pore median on the right side. Genital orifice near right tentacle, a groove running from it toward the breathing pore. Foot obliquely grooved and rather coarsely reticulated, pinched up into a high, acute keel posteriorly, this keel declining and terminating in a prominent horn-like process at the end. Foot-margin rather wide, vertically grooved as usual. Pedal furrows scarcely rising at the tail, meeting in a caudal pore immediately below the " horn." Sole transversely wrinkled, the wrinkles bent backward mesially, as in Prophysaon. Length 10 to 13 mm. Shell convex, with yellow cuticle, thin calcareous layer and pos- terior nucleus. Genitalia (PI. XII, figs. 49, 50) with the penis enormously swollen,, its lumen filled by a bifid, fleshy, imperforate, corrugated body 16 234 PROCEEDINGS OF THE ACADEMY OF [1898. attached to one side above ; epiphallus moderately stout, longer than the penis, bearing the retractor muscle near its base. Sperm- atheca globular, large, borne on a duct of its own length, inserted upon the atrium. Type locality, Astoria, Oregon (Hemphill) ; also in Washington atChehalis; and according to Binney, Olympia and Gray's Har- bor. Part of several of the references given above apply to H. came- lus, Mr. Binney having included that species in glandulom. The latter is herein restricted to slugs with papillose mantle and caudal horn, as originally indicated by Bland and Binney. Besides the conpsicuous external differences noticed under H. camelus, the two species differ markedly in the genitalia. In H. glandulosa the fleshy process in the penis is bifid and attached to the side at the apex of the cavity. In H. camelus the process is simple and attached basally. The position of the penis-retractor and the shape of the spermatheca and its duct differ in the two forms. H. camelus Pilsbry & Vanatta. PI. IX, figs. 3, 4 ; PI. XII, figs. 41, 42; PI. XVI, fig. 85. He?nphillia camelus Pilsbrf & Vanatta, Nautilus, XI, p. 44 (August, 1897). Color in alcohol pale grayish-buff, closely speckled and maculated with blackish on the mantle and tail, more sparsely and lightly so on the anterior half of the foot, the sole without dark markings. On the mantle the spots form two more or less distinct longitudinal bands. Surface of the mantle somewhat rugose, not papillate ; breathing pore behind the middle. Genital opening near right tentacle. Foot with a short dorsal groove behind mantle, obliquely descending grooves with sparse reticulation on the sides of tail, and coarse reticulation below mantle laterally ; the head longitudinally closely grooved and reticulate ; sole as in H. glandulosa ; tail some- what keeled above near the end, without any appearance of a cau- dal " horn." Foot-margin wide, grooved vertically ; pedal furrows abruptly and conspicuously rising at the tail, with no noticeable caudal pore at their union, at least in alcoholic examples, but in one specimen there seems to be a transverse slit under the pedal groove, with a vertical gutter below it, T-shaped. In another, nothing of this appears. Length about 28 mm. Genitalia (PI. XII, fig. 41, 42) with a very large penis, its cavity filled by a large, transversely corrugated, solid, fleshy body attached at the base of the penis, and a small tongue-like body arising close 1898.] NATURAL SCIENCES OF PHILADELPHIA. 235 to the entrance of the epiphallus (fig. 42). The latter is longer than in H. glandulosa, and the retractor muscle is inserted at its root. Spermatheca small, its duct very stout, inserted upon the atrium. Shell slightly convex, long-oval, with clear yellow cuticle, thin calcareous layer, and posterior nucleus; the surface lightly marked with growth lines. Length 8, width 5 mm. Jaw low, wide, with about 14 low, broad ribs separated by nar- row intervals. Radula : Marginals with rather long inner cusps (PI. XVI, fig. 85). Old Mission, Idaho (Henry Hemphill). This species has a proportionally smaller shell than H. glandulosa, a longer, less compressed and less carinated tail, with no trace of a caudal horn and no perceptible caudal gland ; the mantle is not papillose, the pedal furrows rise abruptly at the tail, uniting over it, and the genitalia differ in important respects, as noticed under the description of H. glandulosa. Genus ARIOLIMAX Morch, 1860. Ariolimax Morch, Malak. Blatter, VI, p. 110. Pilsbry & Vanatta, Proc Acad. N. S. Phila., 1896, p. 342. To the generic characters described and implied in our former paper, the following may be added : Tail gland (PI. XV, fig. 81) a peculiar triangular mass of tissue, in alcoholic specimens deeply fissured transversely. Muscle system (PI. XIV, fig. QQ, A. columbianus) having the buccal and eye retractors converging posteriorly, their proximal in- sertions contiguous at the posterior edge of the diaphragm. Buc- cal retractor very deeply bifurcate. An accessory muscle, the " retensor," arises with the retractor group, to the left of the median line, and passing forward is inserted in the integument of the neck, on the right side or above. Lung (PI. XV, fig. 73, A. columbianus, the kidney removed) and kidney (PI. XV, fig. 74, A. columbianus) as usual in Arionidce. Auricle concealed by kidney, ventricle (fig. 73, 74, v) exposed. Subsequent studies support the conclusion reached in our former paper, that Ariolimax is more closely allied to Aphallarion than to any other known genus. Genus APHALLARION Pilsbry & Vanatta, 1896. Aphallarion P. & V., Proc Acad. N. S. Phila., 1896, p. 348. Tail pore as in Ariolimax. Muscle system (PI. XIV, fig. 67) substantially like Ariolimax in arrangement of the buccal and eye retractors, except that the right 236 PROCEEDINGS OF THE ACADEMY OF [1898. eye retractor is not involved between the $ and 9 branches of genitalia ; " retensor " inserted nearer the median line anteriorly. Penis retractor wanting, but several vaginal retractors (fig. 67, vag. r.) arise from the diaphragm. Pallial region as in Ariolimax, except that the kidney is larger, and both auricle and ventricle are concealed therein (PI. XV, fig. 76). Aphallarion is intimately related to Ariolimax, from which it dif- fers in the absence of a penis and its retractor, in having the right eye retractor free from and to the left of the genitalia, and in hav- ing both chambers of the heart embedded in the kidney. No other genus is nearly allied. To our former account it may be added that Mr. Wetherby in- forms us that his Ariolimax Hecoxi from Santa Cruz is specifically the same as our A. Buttoni. As he remembers the genital system, it corresponded with that of our species. Since A. Hecoxi was not described, this will in no way affect nomenclature, but is of interest as removing a doubtful species from slug literature, and extending the geographic range of Aphallarion. Genus HESPERARION Siuiroth, 1891. Hesperarion Simroth, Malak. Blatter (n. F. ) XI, Heft 2, p. 109. Type Ariolimax niger Coop. Slugs with the usual small, anterior, shield-like mantle, completely buried, non-spiral shell plate, and long body-cavity excavated to end of tail. Breathing pore somewhat behind middle of right mantle edge. Genital orifice distant from tentacle, below the ante- rior margin of mantle. Foot with longitudinal grooves, becoming oblique on the sides, the foot margin moderate, pedal furrows deep, meeting in a very conspicuous, subtriangular, posteriorly guttered tail pit. Sole rather indistinctly tripartite, the areas not defined by longitudinal grooves. Jaw with coarse ribs. Radula with the usual tricuspid central and bicuspid lateral teeth, ectocones small ; marginals with very long, oblique cusps, the ectocone minute or vestigial. Intestinal tract (PI. XI, fig. 33) much as in Ariolimax. G1 in- distinctly divided into crop and stomach, making a half revolution ; G2 describing a complete revolution in the opposite direction, G3 another, reversed, and G4 still another revolution parallel to G2. Posterior loop formed by G3 and G4 lying behind that formed by G1 and G2, as in Ariolimachm generally. 1898.] NATURAL SCIENCES OF PHILADELPHIA. 237 Genital system (PI. XII, figs. 44-48) having a well developed penis with terminal retractor and epiphallus, lumen with plicate walls (fig. 45), and a large apical penis papilla (figs. 45, 46). Atrium hearing a vermiform appendicula with swollen base (fig. 44 ap ; fig. 47, ap). Spermatheca borne on a short, basally swollen duct. Spermatophores (fig. 43, x H) cbitinous, elongate, with flagellum- like extension at one end. Ovotestis separated from albumen gland, lying on the right side under G3, to the right of posterior end of stomach (PI. XI, fig. 33, ot.). Muscle system (PI. XIV, fig. 71) Ariolimacine in having the re- tractors converging posteriorly, their proximal insertions contigu- ous; buccal retractor deeply bifurcate. No " retensor." Penis retractor short, broad, inserted in the left anterior portion of the lung floor or diaphragm (fig. 71, r.p.). Lung as usual ; kidney very large (PI. XV, fig. 77, k). Only the ventricle exposed. Distribution : Middle portion of California, in the counties lying near and below San Francisco Bay, west of the Sierra Nevada. Externally H.espterarion is like Ariolimax and Aphallarion except in the structure of the caudal pore, which is a deep, open pit in this genus, while in the others it is filled by a mass of spongy tissue. The jaw, teeth, intestine, pallial region and musculature of the three genera are practically identical in their main features, except that Hesperarion totally lacks a " retensor" muscle. In the genitalia are found further important differences. The ovotestis is not packed adjacent to the albumen gland anteriorly, as in Ariolimax and Aphallarion, but is carried back to a more pos- terior position among the hind loops of the intestine, and surrounded by the liver (PI. XI, fig. 33, ot.). The penis, externally similiar to that of Ariolimax, is of the usual simple structure, not invagi- nated, and the atrium bears an enigmatic organ of unknown func- tion, our ignorance of which is veiled behind the term "appendic- ula."12 This is wanting in other Arionidce with the exception of Binneya, the most primitive genus of the family. The species of Hesperarion are dimorphic, like Ariolimax colum- bianus, having a spotted and an immaculate form. 12 This convenient term was first used by Dr. von Ihering in his " Morpholo- gie und Systematik des Genitalapparates von Helix." The appendicula in- serted low on the vagina or on the atrium is not homologous with the elon- gated sack found in Panda, Strophocheilus, etc., associated with the spermatheca. The latter probably serves the purpose of an accessory spermatheca. 238 PROCEEDINGS OF THE ACADEMY OF [1898. H. niger (J. G. Cooper). PI. IX, figs. 5, 6j PI. XI, fig. 33; PI. XII, figs. 43-48; PI. XIV, fig. 71. Ariolimax niger J. G. Cooper, Proc Acad. Nat. Sci. Phila., 1872, p. 147, pi. 3, f. B, 1-4. W. G. Binney, Terr. Moll. V, p. 234, f. 133 (caudal pore) ; pi. v, f. D, F, (teeth.) ; pi. xii, f. F (genitalia) ; Man. Amer. Land Shells, p. 100, f. 64; Terr. Moll, v, Third Supplement, Bull. M. C. Z., XIX, no. 4, p. 212, pi. v, f. A, I, C, D (external aspect and caudal pore). Cockerell, Ann. Mag. N. H. (6), vi, p. 278, 279. Hesperarion niger Simroth, Malak. Blatter (n. F. ), xi, p. 109-119, pi. 1, f. 7-14. Ariolimax Andersoni J . G. Coop.?, W. G Binney, Ann. Lye. Nat. Hist. N. Y., xi, p. 182, pi. xii, f. 9 (genitalia), pi. xviii, f. G (teeth) ; Terrestr. Moll. V, p. 235, f. 135, 136, pi. xii, f. E (genitalia), pi. v, f. G (teeth). Man. Amer. Land Shells, p. 132, f. 66, 67. Second Suppl. T. M. V, p. 43. Third Suppl. p. 212, pi. v, f. F. Not Arion Andersoni J. G Cooper. Exterior: Upper surface (iu alcoholic specimens) smoky brown- black above, slightly lighter gray-black laterally, unicolored or dappled with black ragged spots ; sole gray-black, with black spots scattered along the inner edge of the lateral areas. Integument obliquely longitudinally grooved, not much reticulated. Mantle with the lung pore submedian ; genital orifice some distance behind the right tentacle, caudal pore conspicuously large and deep, with a cleft extending to the tail ; sole indistinctly tripartite. Length (in alcohol) 30-45 mm. The genitalia in two individuals dissected show considerable variation. In one, (PI. XII, fig. 44), the penis is large nearly its entire length, constricted at base; this being from a maculated indi- vidual like PI. IX, figs. 5, 6, from Santa Clara, Cal. In the other, a typical niger in coloring, the penis is slender below, swollen above (PI. XII, fig. 47). We hope to receive further specimens and ascertain the limits and significance of variation iu these organs. In one specimen (Mus. no. 71,078) there were thirteen spermato- phores (PI. XII, fig. 43) in the spermatheca. Jaw with eleven wide ribs. Radula agreeing with Ariolimax in the long, oblique cusps of the marginal teeth. Cooper's types were from the neighborhood of San Francisco Bay. Specimens are before us from Bolinas, Haywards, Santa Clara, Stevens' Creek Canyon, Santa Cruz range, 900 feet altitude, and near San Jose. Binney gives the localities Santa Rosa, Healds- burg, Sonoma Co.; and for the synonymous Ariolimax Andersoni, mountains of Alameda Co. The general range, therefore, covers the Coast and Bay counties from Sonoma to Santa Cruz. 1898.] NATURAL SCIENCES OF PHILADELPHIA. 239 Professor Cockerell defines a color-form maculatus as follows : " This much resembles A. hemphilli var. maculatus, but is larger and stouter, and has the lateral areas of the sole marbled as in niger. Two specimens were received from Dr. Cooper, who found them at Haywards, Cal." The maculated form is shown in our figures. It seems more abundant than the spotless slug, but in our series it is difficult to separate the two, as some which appear spot- less often show a few macula? on close examination. H. Hemphilli (W. G. Binney). Ariolimax Hemphilli W '. G. Binney, Ann. Lye. Nat. Hist. N. Y., XI, p. 181, pi. xii, f. 7 (genitalia), pi. xviii, f. H (teeth) (1875) ; Terrestr. Moll., V, p. 235, f. 134, pi. v, f. H (teeth), pi. xii, f. G (genitalia) ; Man. Amer. Land Shells, p. 102, f. 65. Third Suppl. Terr. Moll., v, p. 212, pi. v, f. G. Cock- erell, Ann. Mag. N. H. (6), vi, p. 278. Ariolimax Hemphilli var. maculatus Ckll. in Binney, Third Supplement to Terr. Moll., V, p. 212, pi. v, f. B. Since its first publication in 1875, nothing material has been added to our knowledge of this species. Its generic position is un- certain. The desirability of procuring additional specimens in order to place the form upon a better basis will be evident. The type locality is Niles Station, Alameda Co., California. Professor Cockerell's color-form maculatus has been figured in Binuey's Third Supplement, but not before described. "Small spotted hemphilli found by Dr. Cooper at Haywards. When alive, as I learn from Dr. Cooper, they are reddish, the spotted variety of niger being gray ; in alcohol, both appear -gray. They agree with hemphilli W. G. B. in the genitalia, and differ also from niger in their more slender form and immaculate sole of foot. Indeed, com- paring them with typical niger, they appear fundamentally distinct in every way, but the var. maculatus of niger is strangely interme- diate— just what one might expect a niger X hemphilli hybrid to be." (Ckll. ms.). Genus ARION Ferussac. Conspicuous in the European fauna for the number of species and individuals, and for the large size and frequently brilliant col- oring of some forms, this genus is represented in America by one or two species introduced from Europe and still very local in distribu- tion. They have not yet exhibited the tendency to spread charac- teristic of the introduced Limaces. Arion hortensia Fer. PL XV, figs. 79, 82, 83; PI. XIV, fig. 72. Numerous specimens of this species were collected in March and April, 1896 near or in a greenhouse in Seattle, Washington, by Mr. "240 PROCEEDINGS OF THE ACADEMY OF [1898. P. B. Randolph. A specimen much contracted in alcohol is here figured, with the retractor system and pallial organs. As preserved they measure 15 to 20 mm. in length ; ground-color above dirty ■whitish, with a conspicuous blackish stripe along each side of mantle and of the foot behind it, the back with a broad median bluish or slate-black band, tapering posteriorly, often only faintly indicated ; sole light yellow. In other specimens from Poughkeepsie, N. Y., the region between the longitudinal black bauds on mantle and sides is speckled and maculated with black. As this species is an immigrant from Europe, where it is well known and has been repeatedly investigated anatomically, we omit a detailed description and synonymy. The coarsely, longitudinally rugose integument, anterior position of the breathing orifice, and posterior position of the genital orifice, below the other, readily dis- tinguish Avion from all native American slugs. Arion sp. W. G. Binney describes a slug referred by him to Avion fuscus Miiller, from Boston, Mass. Mr. Cockerell considers it likely that the figure in Terrestrial Mollusks, PI. LX1V, fig. 1, (copied in Man. Amer. L. Shells, fig. 502) represents A. subfuscus. Whether more than one species of Avion occurs in America will remain doubtful until further examination of the Bostonian slug can be made. Genus PROPHYSAON Bland & Binney, 1873. Prophysaon Bland & Binney, Ann. Lye. Nat. Hist. N. Y., X, 1873, p. 293; type P. hemphilli B. & B. Cockerell, Ann Mag. N. H. (6), VI, p. H77-279, and Nautilus XI, p. 77 (key to species). — W. J. Raymond, Nautilus. IV, p 6 (mutilation of tail). Phenacarion Cockerell, Nautilus III, p. 127 (March, 1890), type Arion foliolatus Gld. The Conchologist II, p. 118. Slugs with anterior shield-like mantle in which the flat, non-spiral shell is completely buried, the breathing pore in front of the middle of its right margin ; genital orifice behind and near right tentacle. Foot reticulated, the areolae subdivided (except in ccevuleum) ; the coloration in two or three longitudinal bands on mantle or mantle and foot, or monochromatic. Foot-margin wide, pedal furrows deep, with no noticeable caudal pore (or only a small slit, in P. foliolatum, hardly or not visible in alcoholic specimens). Sole not in the least tripartite. Tail usually showing an oblique constriction at from the posterior third to sixth of the animal's length, marking the place where self-amputation takes place. 1898.] NATURAL SCIENCES OF PHILADELPHIA. 241 Body cavity extending into the foot, but frequently not to its end ; genital system and gut lying side by side and extending about the same distance backward (PI. XI, fig. 34, P. fasciatum) . Jaw weak, flexible; flatly ribbed, plaited or striate. Rachidian teeth tricuspid, laterals bicuspid, the ectocones small ; marginals formed by shortening of the basal-plates, bicuspid, the mesocone moderate or short, ectocone small, occasionally bifid. Intestinal tract (PI. XI, figs. 28, P. Andersoni ; fig. 30, P. coeruleum, fig. 32, P. foliolatum, and fig. 34, P. fasciatum) with four well devel- oped sigmoid folds ; no division of G1 into crop and stomach ; ante- rior loop formed by G2 and G3 twisted one-half revolution ; poste- rior loop of G3 and G4 long, extending far behind stomach, and twisted less than a complete revolution. Genital system (PI. XII, figs. 37-40, and PI. XIII, all figs.) not crowded forward; no penis nor retractor; epiphallus either very stout, cylindrical and fleshy, with minute perforation, or more slender, long and tapering distally ; in either case suddenly narrow- ing near the atrium to a minute duct, which enters the atrium by a short tapering peduncle, in close contact with which the enlarged epiphallus is held by a muscle (seen in fig. 57 of PI. XIII, muse, and fig. 39 of PI. XII). Duct of spermatheca short ; spermatophores as in Hesperarion. Ovotestis (PI. XI, fig. 34 ) lying anterior to the posterior loop of gut, between its upper and lower folds, adjacent to the albumen gland. Muscle system (PI. XIV, fig. 70) with the eye retractors inserted at the outer posterior angles of the diaphragm, as in Arion; buccal retractor inserted at the posterior edge of diaphragm to the right of the middle, bifurcate distally. Right eye retractor passing between branches of genitalia. Pallial region (PI. XV, fig. 80) much as in Arion; breathing pore, anus and nephridial orifice at the right anterior angle of the pallial cavity ; kidney ring-like, excavated to show both chambers of the heart; other features as usual in the family. Distribution : Middle California to British Columbia, eastward in Idaho to the Cceur d'Alene Mts. Prophjsaon stands rather isolated in the Arionince. The only native American genus approaching it is Anadenulus, but this differs in several important particulars to be mentioned below. The Pala?- arctic Arion is like Prophysaon in the pallial region, but differs markedly in (1) the removal of the buccal retractor insertion back- 242 PROCEEDINGS OF THE ACADEMY OF [1898. ward from the diaphragm edge, (2) the complex twisting of the gut and the posterior position of the stomach (see these Proceedings, 1896, pi. 13, f. 3) ; (3) the simpler form of the epiphallus, and well developed retractor muscles of vagina and spermatheca, and (4) the normally constructed tail. There are various other minor differences ; but upon the whole, the American genus is less divergent than the European from the primitive forms of the family in its musculature, more diver- gent in the tail structure and epiphallus. In Arion, shell reduction has progressed rather further, at least in the typical forms. Geoma- lacus, a lateral branch from the Avion stem, is even more remote from the American genus. The Himalayan genus Anadenus (with which Fischer unites Prophysaon as a subgenus), differs conspicuously in possessing a well developed penis with retractor, and externally in the extreme narrowness of the foot margin and the tripartite sole. The self-amputation of the tail in Prophysaon has been described by Henry Hemphill13 and W. J. Raymond ;u while Simroth has noticed and figured the appearance of the tail in alcoholic specimens before amputation. Mr. Raymond writes as follows: " In August, 1888, I collected on one occasion about a dozen examples of Prophysaon Andersoni J. G. Cp., near the San Jose reservoir, above Lexington, Santa Clara County. While taking measurements of the living specimens, before putting them into alcohol, I noticed in several a contraction about two-thirds of the length from the head. This appeared as an indented line completely encircling the body. Upon handling the slugs to examine this phenomenon more closely, the line became deeper and in the case of two of the specimens the tail dropped off, almost as readily as the ray of the so-called 'brittle' starfish." Nearly all full grown alcoholic specimens of P. Andersoni, folio- latum and cceruleum show a well defined impressed line around the tail, or occasionally the tail has actually been amputated, as in the specimen of the last-named species figured on Plate IX, figs. 7 to 11. Dissection shows that the body cavity does not extend beyond the point of excision, or but little beyond ; the remainder of the tail being occupied by very spongy vesicular connective tissue. We have not seen Prophysaon alive, and observations are still lacking upon some interesting points which could probably be sup- 13 Nautilus III, p. 126, footnote; Fourth Supplement to Terr. Moll. V, p. 1S2 14 Nautilus IV, p. 7. 1898.] NATUEAL SCIENCES OF PHILADELPHIA. 243 plied by keeping slugs in captivity. Does regeneration of the lost member take place, and if so, is the renewed tail structurally like the amputated one, or does loss of the tail result eventually in death ? What animals persecute Prophysaon f Observations upon these questions might go a long way toward explaining the present utility of tail amputation, though they may not indicate the mode of its origin. Without knowledge of the final consquences of am- putation to the slug, or what its natural enemies are, speculation upon tail excision is idle. In an analogous case now well known, that of Helicarion in the Philippine Islands, Semper15 states that every species he examined " possessed the singular property, which many lizards have — particularly the Geckos — of shedding their tail when they are seized somewhat roughly at a little way behind the shell. This they do by whisking the tail up and down with extra- ordinary rapidity, almost convulsively, till it drops off; if the creat- ure is held by the tail, it immediately falls to the ground, where it easily hides among the leaves. If it is laid flat on the hand, the rapid wagging movement is strong enough to raise the body with a spring into the air, so that it falls over on to the ground. These snails at first constantly escaped me and my collectors in this way, and not unfrequently we had nothing but the tail left in our hands. According to Guilding's observations the same peculiarity of part- ing with the hinder prolongation of the foot characterizes the West Indian snail Stenopus. I ascertained by further investigation that in a free state of nature such self-mutilation not unfrequently occurs, for about a hundred specimens of Helicarion gutta, which is ex- tremely common in the north-east of Luzon, I found, perhaps, ten in- dividuals that had shed their tails, or, to speak more accurately, the hinder end of the foot, and had the stumps partly healed, or the foot to some extent grown again. Now, this hinder portion of the foot is the most conspicuous part of the snail's body, and it may be sup- posed that it is, in most cases, the part first seized by the reptiles or birds that prey upon them ; but, startled by the escape of the body, they would soon learn to recognize, by the form of the tail, those species which were capable, by this self-amputation, of depriving them of the larger and probably the only valuable portion of the prey. In this way the species of the genus Helicarion can escape the pursuit of their enemies better than they otherwise could on account of their exposed mode of life." 15 Animal Life, Chapter XII. 244 PROCEEDINGS OF THE ACADEMY OF [1898. Whether Seruper's plausible supposition be held to sufficiently ex- plain the self-mutilation of Helicarion or not, it seems to us that the slowness of the process of amputation in Prophysaon precludes the idea that it is a means of escape from birds, which, in any case, are as likely to seize the slug by the head or middle as by the tail. If molluscan foes are in question, the time consumed in amputation is of less moment; and it might be worth while to imprison Prophys- aon with Circinaria (alias Selenites and Macrocyclis), which is the most rapacious snail of the West Coast. The suggestion is offered for what it may be worth ; and the whole subject referred to the enterprising and enthusiastic naturalists of the West for observation and experiment. The species of Prophysaon fall into three very distinct groups, two of them containing but one species each, the other including P. Andersoni Coop, (plus Hemphilli B. & B., Padficum and flavum Ckll.), and P. folio latum Gld. (including Phenacarion Hemphilli W. G. B.). As the synonymy indicates, these two species are excessively variable. In the case of Andersoni a great extent of territory is in- habited by the several forms and typical form of the species, and much more extensive series than we have yet seen must be brought together before a final decision upon the limits of variation, and the definable subspecies if any exist, can be made. Our study of them is based wholly upon alcoholic slugs, gathered from localities hun- dreds of miles apart; and it is to be expected that richer collections may modify, and certainly will amplify, the conclusions reached. Our general results so far as synonymy is concerned, do not differ radically from those attained by Professor Cockerel], whose synopsis of the species is given below.16 16 " (1). Epiphallus stout, sausage-shaped. A pale dorsal stripe. a. Ochreous species, P. Padficum (vac\- JlavumY b. Grayish species, . . . . P. Andersoni (inch Hemphilli). " (2). Epiphallus banana shaped, but tapering at the end. No pale dorsal stripe, . . P- ccBruleum (Epiphallus rather slender, flattish, tapering, somewhat curved. Shell 2 mm. long, narrow, white, shiny).' '(3) Epiphallus slender, gradually tapering to a point. Body with a blackish dorsal band. a. Jaw ribbed P. fasciaium. b. Jaw only striate, . . . P. humile. (Until more material of Aumi/eis seen, it cannot be made sure that the jaw-character is a specific one.) " For some further details of Professor Cockerell's views, see Aratitilus, Nov. 1897, pp. 77-79. The "banana" or "sausage" shape of the epiphallus we find to be a variable character, not constant specifically. 1898.] NATURAL SCIENCES OF PHILADELPHIA. 245 Key to species of Prophysaon (alcoholic specimens). a. Surface with coarse diamond-meshed reticulation, the meshes finely subdivided ; mantle banded or spotted ; foot-margin moderate or wide. b. Mantle free about two-thirds of the distance back to breathing orifice (PI. X, fig. 17). Epiphallus stout, cylindrical, bluntly rounded at both ends; vas deferens extremely long, convoluted in a snarl; usually a pale dorsal line on the tail ; jaw coarsely ribbed. c. Outer lateral and inner marginal teeth with blunt and rather short cusps. Length 50-80 mm. (in alcohol), the posterior third or more being marked off* by an oblique constriction and subject to self- amputation, P. folio latum. c'. Outer lateral and inner marginal teeeth with long, acutely pointed cusps. Length 25-35 mm. (in alcohol), the posterior part subject to amputation shorter, P. Andersoni. b'. Mantle free as far back as the breathing orifice (PI. X, fig. 27). Epiphallus slender, gradually tapering distally ; vas deferens not elongated ; back with a wide red or pale area enclosing a darker median band, and bounded on each side by dark lateral bands, or entire slug dusky; jaw closely, finely plaited or striated, P. humile and var. fasciatum. a'. Surface longitudinally closely grooved above, obliquely and less closely so at the sides, the grooves occasionally joined by short transverse lines ; foot- margin very narrow, P. cozruleum. P. Andersoni (J. G. Cooper). PI. X, figs. 18-22 ; PI. XI, fig. 28, 29 , PL XIII, figs. 59-62; PL XVI, figs. 92, 93. Arion ? Andersonii J . G. Cooper, Proc. Acad. Nat. Sci., Phila., 1872, p. 148, pi. 3, f. F, 1-5. Not "Prophysaon Andersoni J '. G. Cooper," W G. Binney, Second Supple- ment to T. M., V, p. 42 (= P. fasciatum). Prophysaon Andersoni J. G. Cooper, W. G. Binney, Third Supplement to Terr. Moll., V, p. 208, pi. iii, f. 1, pi. vii, f. C; pi. i, f. 3 (dentition), pi. ix, f. I, J (surface reticulation). Fourth Supplement, p. 179. Prophysaon Andersoni J. G. Cooper, Proc. Amer. Philos. Soc, 1879, p. 288. Cockerell, Ann. Mag. N. H. (6), VI, p. 278; Nautilus XI, p. 77, 78 (includes P. Hemphilli). Raymond, Nautilus IV, p. 6. Prophysaon Andersoni var. tnarmoratum CklL, The Conchologist II, p. 72. P. Andersoni var '. suffusum CklL, The Conchologist II, p. 118. Prophysaon Hemphilli Bland & Binn., Ann. Lye. N. H. of N. Y., X, p. 295, pi. xiii, exclusive of fig. 5 (external view, shell, jaw, teeth, digestive system and 246 PROCEEDINGS OF THE ACADEMY OF [1898. genitalia). W. G. Binney, Terrestr. Moll., V, p. 238, f. 137, 138, 139, pi. v, f. 1 (teeth), pi. xii, f. H (genitalia), "specimens from Mendocino County" excluded. Man. Amer. Land Shells, p. 105, f. 68, 69, 70. Third Supplement to T. M., V, p. 208, pi vii, f. D. Simroth, Nova Acta Acad. Cres. Leop.- Carol. Germ. Nat. Cur., LVI, 1891, p. 362, pi. 7, f. 5-8 (full account of anat- omy). Taylor, The Ottawa Naturalist III, p. 90. Prophysaon pacificum Cockerell, Nautilus III, p. Ill (Feb., 1890); V, p. 31 ; XI, p. 77 (includes fiavum). W. G. Binney, Third Supplement to T. M. V, p. 210, pi. vii, f. B. F. H. Prophysaon flavum Cockerell, Nautilus III, p. 111. Ann. Mag. N. H. (6), VI, p. 278, 279, as var. of pacificum. W. G. Binney, Third Suppl., p. 210, pi. vii, f. K. Prophysaon Andersonii var ■. pallidum Ckll., Nautilus V, p. 31. Length in alcohol 25-35 mm. Upper surface buff-gray or whit- ish flesh colored, with irregular blackish diamond venation and sometimes suffused with purplish-black, showing a pale dorsal line; the mantle yellowish, with two curved lateral black stripes, with or without scattered marbling; sole pale buff or dirty white ; foot-mar- gin pale ; below and anterior to mantle whitish. Integument with rather coarse diamond venation, the areolae subdivided into minute polygonal granules. Shell oval, with moderately consistent calcareous layer. Genitalia (PI. XIII, figs. 59, 60, 61): Epiphallus'cylindric, straight or sometimes curved, with an abrupt basal constriction, kink and peduncle secured by a short muscle, as described above. Vas deferens very long, its length measured from end to the abrupt bend at the atrium being about 7 times the length of the epiphallus ; thrown into a complicated snarl. Spermatheca globose or oval, on a rather slender duct. Vagina long. Free oviduct short. Ovotestis showing externally a compact mass of rounded follicles. Right eye retractor passing between branches of genitalia. Measurements of several specimens are as follows : a (Mus. no. 69,010, Oakland, Cal.), length of swollen epiphallus 9 mm.; length of extended vas deferens, from apex of the epiphallus to base of same 64 mm.; b (same locality), epiphallus 5, v. d. 36 mm.; c (Port- land, Ore.) epiphallus 5.5, v. d. 37 ram. Jaw (PI. XVI, fig. 92, specimen from San Juan I.) arcuate with about 15 well-defined ribs, denticulating the basal margin. Radula with 44-1-44 teeth ; rachidian tricuspid, laterals bicuspid, the ectocones quite small ; marginals with moderately long, pointed mesocones and minute ectocones (PI. XVI, fig. 93, two outer lateral, and a group of marginal teeth). Alcoholic P. Andersoni varies in general tone from a smoky lead color above to reddish with black marbling or suffusion, mantle light 1898.] NATURAL SCIENCES OF PHILADELPHIA. 247 •dirty buff, or yellow, variously marked. Very rarely the two curved black stripes on the mantle are wanting, and occasional specimens fail to show the pale dorsal line, which in others is very •conspicuous. We fail, however, to find internal characters permit- ting the division of our series into several species ; and while it is possible that some of the named forms may be geographic subspecies, we are disposed to regard them rather as local variations of but slight rank and uncertain diagnosis. Large series from many local- ities must be collected and compared to define the subspecies, if any exist. It differs chiefly from P. foliolatum in being smaller, with very much shorter " amputateable " tail segment, and in dentition. Simroth found a very long, smooth, vermiform spermatophore in P. AndersonL Santa Clara Co. (Ehrhorn, Raymond) around San Francisco Bay (Cooper, Button, et at7.), California ; Portland (Malone), Forest Grove and Astoria (Hemphill), Oregon ; Kalama, Chehalis, Port Townsend and San Juan Island (Hemphill), "Washington ; Van- couver Island ( Wickham, Taylor); Old Mission, Lake Cceur d'Alene, Idaho (Hemphill). There is considerable variation in the shape and size of the epi- phallus, even among specimens of similar size and external appear- ance, collected at the same time at one locality. Thus, in one spec- imen of a small series from San Juan Island, the epiphallus is 4£ mm. long, and straight (fig. 61) ; while in another it measures 7 mm. and is curved (fig. 59). The extremes in a larger series from Oak- land, Cal., are : shortest, 5 mm. long, straight ; longest 8 mm. long, curved. After vainly trying to correlate the variations of the epiphallus with other characters, with a view to defining two or more species, we are compelled to conclude that they are largely individ- ual, possibly to some extent functional, but that these variations are not in any sense characteristic of races or species. Of course the observations were made upon sexually mature individuals.17 Of the several forms included in the above synonymy, it is now generally admitted that P. Hemphilli is a synonym of P. Andersoni. Professor Cockerell18 has stated his opinion that P.flavum, described 17 Mr. Cockerell's division of Prophysaon into forms with the epiphallus '' sausage-shaped " and those with it " banana-shaped ' ' is therefore not a spe- cific criterion according to our observations. 18 Nautilus, XI, p. 77, Nov., 1897. 248 PROCEEDINGS OF THE ACADEMY OF [1898. from Gray's Harbor, Washington, is to be included in P. pacificum. There are all possible intergradations between the ochreous and grayish forms in P. Andersoni and P. folio latum. In P. pacificum we fail to see any specific characters. The color- ation agrees well with specimens of undoubted P. Andersoni from Washington, and neither the measurements nor the dentition offer differential characters, so far as we can see. The types were col- lected by Mr. Wickham, near Victoria, Vancouver Island. P. foliolatum (Gould). PI. X, figs. 15, 16, 1 7 ; PI. XI, fig. 32 ; PI. XIII, figs. 55, 56, 57, 58; PI. XIV, fig. 70 ; PI. XV, fig. SO ; PI. XVI, figs. 90/ 9S. Arion foliolatus Gould, Moll. U. S. Expl. Exped., p. 2, PI. I, f. 2a, b (1852); Binney. Terr. Moll , II, p. 30. PL 66, f. 2 (1851 ). Copied by subsequent writ- ers. W. G. Binney, Second Supplement to Terr. Moll., V, p. 206, PL viii, f. A, B, PL ix, f. B. C, D. Phenacarion foliolatus CklL, Nautilus., iii, p. 127 (March, 1890); Ann. Mag. N. H. (6). VI, pp. 278, 279; W. G. Binney, Fourth Supplement, p. 181. Arion foliatus W. G. Binney, Proc Acad. Nat. Sci. Phila., 1858, p. 197. Arion foliolatus var. Hemphilli W. G. Binney, Third Supplement, T. M. V, p. 208, PL viii, f. C; ix, f. H (genitalia). Cockerell, Nautilus III, p. 126 (March, 1890). Phenacarion Hemphilli W- G. Binney, Fourth Supplement toT. M. V, p. 183 (not Prophysaon Hemphilli Bid. & Binn.). Length (in alcohol) 50-80 mm. Rather slender, the posterior third (or more) often distinctly more attenuated, defined by an ob- lique groove. Mantle oblong, its length contained 2f to o\ times in the total length of body, the breathing orifice decidedly in front of the middle. Foot margin rather wide; wrinkles of the sole corres- ponding to vertical grooves of the foot margin, bending backward and meeting in the middle ; pedal groove deep, with no noticeable caudal pore. Colors variable : (1) Back clear reddish-fawn with a lighter dor- sal band, sometimes obsolete, the mantle with the usual two curved black lateral stripes, with or without scattered macula? ; becoming paler, light yellowish on the sides and sole; or (2) back reddish, suffused with black, mantle bands long, often with a third median band and scattered maculae, foot with the principal veins of the reticulation black-pigmented, as are alternate grooves of the foot margin ; sides paler, gray ; sole yellowish. Surface with deeper oblique grooves connected by short longi- tudinal grooves to form a roughly diamond-shaped reticulation, the meshes of which are minutely subdivided. Shell very delicate, membranous, with a thin and incoherent layer of calcareous granules. 1898.] NATURAL SCIENCES OF PHILADELPHIA. 249 Jaw (PI. XVI, fig. 98) strong, opaque, with 8-14 wide flattened ribs. Radula with 44-1-44 teeth. Centrals tricuspid, laterals bicus- pid, the ectocones small. Marginals formed by shortening of the basal-plates, having the mesocone short, ectocone simple or on some teeth bifid (PI. XVI, fig. 90). Epiphallus stout, cylindric, curved, with the usual constriction, peduncle and muscle at base. Vas deferens extremely long, elabor- ately twisted and tangled. Vagina long, the spermatheca duct about as long as the spermatheca. Albumen gland very large, long and tongue-shaped. Ovo-testis a very compact mass showing exter- nally only the rounded-polygonal ends of the closely packed folli- cles. In two typical individuals from Seattle (Mus. no. 71,072) the measurements are : a (fig. 55), length of swollen epiphallus 12.5 mm., of extended vas deferens from summit of epiphallus to base of same 92 mm. ; of albumen gland 28 mm. ; length of animal 80 mm. b (fig. 57), length of epiphallus 14 mm.; of vas deferens 114 mm. The ratio of length of epiphallus to that of vas deferens as measured above is about 1 : 71 or 8. The original of fig. 58 is a small speci- men, perhaps not fully adult. Type locality, Discovery Harbor, Puget Sound (Pickering). Also occurs at Olympia (Hemphill), Seattle (Hemphill, Randolph), and doubtless throughout the Puget Sound region generally. P. foliolatum is very closely allied to P. Andersoni Coop. It is larger, more elongated, with the solid portion of the tail, or that sub- ject to amputation, longer in proportion than in Andersoni. In living specimens a mucous pore is visible at the tail, but this is not noticeable externally in alcoholic examples. The light dorsal line is occasionally indistinguishable. The jaw forms probably intergrade with P. Andersoni; but the teeth differ quite perceptibly in the shorter, blunter cusps of the outer laterals and inner marginals. This is one of the best specific characters. The form described by Binney as Phenacarion Hemp hi Hi does not seem to offer sufficiently tangible points of difference from folio- latum to stand as a species, even were the name not preoccupied. It is said to be " more slender and more pointed at the tail than foliolatus. The body is a bright yellow with bluish-black reticula- tions. The edge of the foot and the foot itself are almost black. Shield irregularly mottled with fuscous. The body also is irregu- 17 250 PROCEEDINGS OF THE ACADEMY OF [1898. larly mottled with fuscous, and has one broad fuscous band down the center of the back, spreading as it joins the mantle, with a nar- rower band on each side of the body. It loses its color on being placed in spirits, becoming a uniform dull slate color. Mantle lengthened oval. Shell-plate represented by a group of calcareous grains concealed in the mantle ; it is impossible to remove it as one shell-plate. A decided caudal pore." The jaw and dentition are as in folio latum. Genitalia much as in foliolatum, but Binney found the albumen gland to be much shorter, less tongue-shaped and brown-tipped. The epiphallus tapers distally, instead of contract- ing abruptly. Localities : Gray's Harbor and Chehalis, Washington. The only characters of importance are the dorsal band, which seems to be similar to P. fasciatum, and the tapering epiphallus, also a character of that species, if not, in this case, an indication of sex- ual immaturity. Mr. Cockerell considers it a synonym of foliolatum ; and, as we have seen no authentic specimen, and the name is, in any case, preoccupied, we consider it best to leave the form as a syno- nym of foliolatum, pending further information. In a series from Cascade Springs, on the Columbia River near the Government locks, collected in October, 1897 by Mr. J. G. Maloue, (PI. XIII, fig. 54) the epiphallus is shorter, not curved, the vas deferens also much shorter. The spermatheca is subglobular. Measurements : length of epiphallus 8.6 mm. ; of extended vas deferens from apex of the epiphallus to the abrupt curve at base of same, 42 mm. ; of albumen gland 13 mm. ; length of animal 50 mm. As measured above, the epiphallus is about one-fifth the length of the vas deferens. In typical foliolatum it is about one-eighth, in Andersoni one-seventh. These specimens are (in alcohol) less ver- miform than typical foliolatum, with paler color, back including shield, reddish, fading on the sides ; mantle striped as usual, but blackish stripes defining the dorsal pale stripe either very faint or lacking, so that in some individuals no pale dorsal line is visible. Thejaw in this form (PI. XVI, fig. 89) resembles that of P. Ander- soni in the numerous ribs. Radula with long, pointed mesocones on outer lateral and inner marginal teeth, as in P. Andersoni. In typical P. foliolatus the corresponding teeth are shorter and blunter. This will probably prove to be a distinct subspecies, and re- ferable to P. Andersoni rather than to foliolatum. 1898.] NATURAL SCIENCES OF PHILADELPHIA. 251 P. humile Cockerell. PI. XVI, fig. 97. Prophysaon humile Cockerell, Nautilus, iii, p. 112 (February 1890), Ann. Mag. N. H. (6), VI, p. 277, 279. W. G. Binney, Third Suppl., p. 211, PI. ViL figs. E, G, L, M. We do not consider P. humile19 specifically distinct from fasciatum. The coloration, genitalia and teeth are practically identical, and the character of the jaw (PI. XVI, fig. 97) does not seem to be constant. Several specimens selected at random from our series of fasciatum from Seattle have a jaw neither plaited or ribbed, but densely, irregularly striated. We cannot find any other differences between these specimens and the ordinary fasciatum with flat-ribbed or plaited jaw. The name humile has precedence over fasciatum and if the two forms prove to be, as we think, specifically identical, fasciatum will be reduced to varietal rank. P. fasciatum Cockerell. PI. X, figs. 23-27 ; PL XI, fig. 34; PI. XII, figs. 37-40; PL XVI, figs. 91, 94-96. Prophysaon fasciatum Cockerell in Binney, Third Supplement to Terr. Moll., V, p. 209, pi. vii.f. A (May, 1890). W. G. Binney, Fourth Supplement, p. 180, Cockerell, Ann. Mag. N. H. (6), VI, p. 278, 279. Prophysaon Hemphilli, ''specimen from Mendocino County," W. G. Binney, Terr. Moll., V, p. 239, pi. xii, f. I. Prophysaon Andersoni J. G. C. , W. G. Binney, Second Supplement, p. 42. Prophysaon fasciatum var. obscurum Ckll. The Conchologist II, p. 119 (Chehalis, Wash.) Length (in alcohol) 25-35 mm., rarely as much as 50 mm. Gen- eral form and surface reticulation as in P. Andersoni. Color ex- tremely variable : (1) Whitish-buff, (2) bluish-gray, or (3) red on the back, gray-buff at the sides, always with two conspicuous black stripes (well- or ill-developed) along the sides behind the mautle, defining a wide, wedge-shaped ligbt dorsal area, which encloses a 19 The original description is as follows : " Prophysaon humile Cockerell — Length (in alcohol) lrj.V mill. Body above and mantle smoke-color, obscured by bands. Mantle wrinkled, and having a broad dorsal and two lateral black- ish bands, reducing the ground-color to two obscure pale subdorsal bands. Length of mantle 7 mill., breadth 5i mill. Respiratory orifice 2| mill, from anterior border. Body subcylindrical, somewhat tapering, rather blunt at end. Distance from posterior end of mantle to end of body 8 mill. Back with a blackish band reaching a little more than half its length, and lateral darker blackish bands reaching its whole length. Reticulations distinct, " foliated." Sole strongly transversely striate-grooved, but not differentiated into tracts. Jaw pale, strongly striate, moderately curved, not ribbed. Lin- gual membrane long and narrow. Teeth about 35-1-35. Centrals tricuspid, laterals bicuspid, marginals with a large point, and one (sometimes two) small outer points. Liver pale chocolate. Found by Mr. A. F. Wickham under the bark of rotten logs in the woods around Lake Co?ur d'Alene, Idaho, 1889. In its reticulations and general characters this species resembles P. Ander- soni, of which it is possibly a variety." 252 PROCEEDINGS OF THE ACADEMY OF [1898. similarly shaped dark stripe running backward from the mantle, sometimes well-defined, sometimes faint. Mantle buff or red, with two curved lateral black bands (sometimes obsolete) and scattered black maculation or marbling. Shell rectangularly oblong, 2 or 3 mm. long. Epiphallus slender, long, and tapering dlstally, having an abrupt kink at base, secured by a short muscle, as usual in the genus. Vas deferens neither lengthened nor convoluted. Vagina apparently functional as a penis. Spermatheca globose or oval, on a short, stout duct which is directly continued into the vagina. Free oviduct short and slender. Ovo-testis a rather loose bunch of oval follicles (fig. 38). Albumen gland unusually hard and brittle. The right eye retractor passes between the branches of genitalia. In one specimen (PL XII, fig. 37) there seems to be a glandular enlargement of one side of the base of the epiphallus with a small tubercle on the other side. This may be pathologic. Jaw (PL XVI, figs. 94-96) arcuate with a slight median projec- tion below, covered with flat, narrow, crowded ribs separated by very narrow, shallow intervals, or with flat, slightly imbricated plaits (or merely densely, irregularly striated vertically in form humile, see above.) Radulawith 35-1-35 teeth. Centrals tricuspid ; laterals lacking the entocone ; marginals formed by union of ectocone with mesocone and shortening of the basal-plate. The cusps are short throughout. The change from laterals to marginals is so gradual that it is prac- tically impossible to draw a line between them. On some outer marginals the ectocone is bifid. The figure shows a central with one lateral and a group of three inner marginals. Well and constantly distinguished from P. Andersoni and folio- latum externally by the wide, light dorsal area enclosing a darker median stripe, and bounded laterally by blackish bands. Inter- nally, the slender, tapering epiphallus and short vas deferens are even more characteristic. The scarlet color of the back, noticed by Cockerell in some specimens, is not accidental, but of common occur- rence. In form the species varies (in alcohol) from a long, vermiform shape to about the contour of P. Andersoni. The body-cavity extends nearly to the end of the tail. Self- excision of the tail occurs, but the amputated portion is short, as in P. Andersoni, and the great majority of individuals we have seen show no oblique constriction of the tail. 1898.] NATURAL SCIENCES OF PHILADELPHIA. 253 P. coeruleum Cockerell. PI. IX, figs. 7-11 ; PI. XI, fig. 30 ; PI. XIII, figs. 51-53 ; PI. XVI, fig. 86. Prophvsaon coeruleum Cockerell, Nautilus, iii, p. 112. Ann. Mag. N. H. (6), VI, p. 278. W. G. Binney, Third Suppl. T. M. V, p. 209, PI. vii, f. I, J. P. coeruleum var. dubium Ckll., /. c. ; W. G. Binney, /. c. Length (in alcohol) about 15 mm. ; color blue or slate-blue (some- times brown), somewhat paler at the sides. Back with close, deep longitudinal grooves, which, on the sides, become oblique and more spaced, and more anteriorly they radiate vertically below the man- tle ; transverse grooves uniting the longitudinals comparatively few and shallow. Foot-margin very narrow, a second narrow well- defined sub-margin above it. Tail without caudal pore, frequently self-amputated and leaving a conspicuous longitudinal slit (PI. IX, fig. 7, and figs. 9-11, the excised portion).20 Genitalia (PI. XIII, fig. 51-53) somewhat as in P. Andersoni. The epiphallus is short ; in one of the original specimens from Olym- pia (PI. XIII, figs. 52, 53) very short, truncated at the ends ; in another specimen from Seattle (PI. XIII, fig. 51) it is oblong ; vas deferens tangled, but shorter than in Andersoni. Spermatheca globular, on a rather slender duct, which is short in the Olympian specimen, longer in that from Seattle. Radula about as in P. fasciatum ; the cusps of outer lateral and inner marginal teeth rather short ; marginals quite wide (PI. XVI, fig. 86). Type locality, Olympia, Washington (Hemphill). In addition to part of Hemphill's original lot, we have received it from Seattle (P. B. Randolph) and Portland, Oregon (J. G. Malone). Mr. Ran- dolph writes that "it occurs solitary in dark fir woods under damp logs. Color in life a brighter shade of blue. They do not bear handling. " "P. coeruleum is an exceedingly distinct species, distinguished at once by its color and the character of its reticulations." In the lat- ter respect, the species differs from all others of the genus, and re- 20 The original description from larger specimens than we have seen, is as fol- lows : '' Length in (alcohol) 22A- mill., in motion 43 mill. Body and mantle clear blue -gray, paler at sides, sole white. Mantle finely granulated, broad, without markings. Length of mantle 7 mill.. breadth 5 mill. Respiratory orifice 2J mill, from anterior border. Body subcylindrical, tapering, pointed. ( In one specimen eaten off at the end. ) Distance from posterior end of man- tle to end of body lOf mill. The reticulations take the form of longitudinal equidistant lines, occasionally joined by transverse lines, or coalescing. Sole not differentiated into tracts. Jaw pale, strongly ribbed. Liver white. Mr. Binney sends me colored drawings of the living animal ; the neck is long and white, or very pale." 254 PROCEEDINGS OP THE ACADEMY OF [1898. sembles Ariolimax. The very uarrow foot-margin, with an unusu- ally distinct border above, is another distinguishing feature. Most of the specimens we have seen have lost the end of the tail by self-amputation, as shown in the figures. When perfect the tail is pointed, with no perceptible mucous pore ; the longitudinal grooves of the back become irregular near the end of the tail. The color of Portland and Seattle specimens is distinctly blue, but some of the original lot from Olvmpia, collected about eight years ago, have become brown. Mr. Cockerell thus describes a variegated form which he refers to cceruleum as a variety : — " Prophysaon cceruleum var. dublum. Length (in alcohol) 8 mill. Length of mantle, 4 mill. Distance from posterior end of mantle to end of body 3£ mill. Mantle broad, with four bands composed of coalesced black marbling, very irregular in shape, and running together anteriorly. Body dark, tapering. Sole pale, its edges gray. Liver white. With the P. cceruleum is a small dark slug, prob- ably a variety of it, but differing as described above. It will easily be distinguished by its blackish color and the peculiar markings on the mantle." There are, in some specimens, very close, fine, superficial im- pressed vertical lines crossing the deeper oblique grooves. Genus ANADENULUS Cockerell, 1890. Anademdus Ckll., Ann. Mag. N. H. (6), VI, p. 279 (Oct., 1890). Slugs with the minute, non-spiral shell plate wholly buried ; the mantle small, rounded and anterior, with breathing pore median on the right side. Genital orifice below right tentacle. Foot reticu- late, somewhat keeled posteriorly, the foot-margin moderate, pedal grooves rising slightly at tail, with no caudal pore there ; sole dis- tinctly tripartite, the areas separated by longitudinal grooves, mid- dle field narrower than side fields (PI. IX, fig. 12). Body-cavity extending the entire length. Jaw with about 20 wide, flat ribs (Binney). Radula with 20-1-20 teeth, about as in Prophysaon in form. Intestinal tract (PI. XI, fig. 35) much as in Prophysaon ; posterior loop formed by G3 and G4 extending far behind that formed by G1 and G2, slightly twisted posteriorly, the folds elsewhere hardly twisted. Genital system unknown. Muscle system (PI. XIV, fig. 68) as in Prophysaon. Eye retract- ors inserted at the two posterior angles of the diaphragm, the buc- 1898.] NATURAL SCIENCES OF PHILADELPHIA. 255 cal retractor at the posterior margin somewhat to the right of the median line, shortly bifurcate distally. Pallial region (PI. XV, fig. 75). Kidney large, rounded nearly filling the lung cavity. Ventricle exposed. Distribution: San Diego Co., California. No adequate discussion of the affinities of Anadenulus can be en- tered upon until well-preserved specimens are collected permit- ting an examination of the genitalia. Present information indicates its proximity to Prophysaon, with which Anadenulus agrees in the di- gestive tract and musculature. But the voluminous kidney, exposing only the ventricle, the conspicuously tripartite sole, and the appar- ent absence of that peculiar structure of the tail which distinguishes Prophysaon, are all important characters indicating the distinctness of the two genera. Turning to Old World genera, we find Avion differing in its tail gland, posteriorly prolonged buccal retractor and complexly twisted intestine. Geomalacus shows the same with still other differences ; and in Anadenus the foot margin is very much narrower, the sole not divided by longitudinal grooves, and the intestine is long and spirally twisted. A. Cockerelli (Hemphill). PI. IX, figs. 12, 13, 1-1; PL XI, fig. 35; PI. XIV, fig. 6S ; PI. XV, fig. 75. Anadenus Cockerelli Hemphill, Nautilus, IV, p. 2 (May, 1890), W. G. Bin- ney, Fourth Supplement to Terr. Moll.,V, p. 178, PI. i, f. 1 ; PI, iii, f. 5 (den- tition). Anadenulus Cockerelli Cockerell, Ann. Mag. N. H. (6), VI, p. 278, 279 (Oct., 1S90). Alcoholic specimens have the foot blackish, with a short, light stripe behind the mantle above, the sides below mantle and the head pale ; mantle small, short, black with two festooned longitudinal yellowish stripes. Length 9-1 3? mm. Cuyamaca Mts., San Diego Co., California (Hemphill). IV. BRIEF DIRECTIONS FOR COLLECTING, PRESERVING AND EXAMINING SLUGS.21 In the Northern States the best time for collecting slugs is in early spring. From February to July, most well grown specimens 31 As many of our American conchologists have not collected or studied slugs especially, we have thought it not superfluous to append the following notes on collecting slugs, with rough directions for their examination. It will readily be understood that if the slug to be examined is of very small size, or it is necessary to obtain all the data from one or two specimens, more or less radical modifications of these instructions must be made. 256 PROCEEDINGS OF THE ACADEMY OF [1898. taken will prove to have the reproductive organs fully developed. Autumn and late summer are a somewhat less favorable time, be- cause the young of the year have then attained the full growth of the species, while upon opening them the genitalia are found un- developed. Still, autumn specimens should be collected. Always date each " catch " and keep it separate.22 The best preservative for slugs (and other land mollusks) is alco- hol. Of other preservatives, formalin (formaldehyde) is perhaps the best ; but it is, on the whole, a very unsatisfactory substitute, ren- dering the tissues tough and slippery, difficult to dissect, and gener- ally destroying calcareous organs in time. Formalin specimens are, moreover, inferior to alcoholic for histological study. Upon the whole, then, formalin should only be used as a permanent preserva- tive for large slugs, if at all, and then in a three or four p. c. solu- tion. It should be added, however, that when travelling with limited means of conveyance, it is often convenient to use formalin on ac- count of the economy of carrying it in the commercial strength, to be diluted as occasion arises. Never crowd snails in formalin ; the bulk of the solution should exceed that of the snails six or eight times. After collecting slugs they should be drowned by placing in a vessel of water with a lid laid on (not a cork pushed in) to exclude air. Generally twelve hours is a sufficient time, but this depends upon the slugs and the temperature. In hot weather less time is required. Test them by taking one out, touching it with alcohol, and if no retraction takes place they are ready to be transferred to 25% alcohol;23 leave in this about twelve hours, then transfer to 50%, and after twenty-four hours or more to about 75%, in which they may be permanently kept. If formalin is used, the slugs may be placed in the 3 or 4% solu- tion when drowned, and changed to fresh solution after a few days, the first being thrown away. Formalin specimens may at any time be transferred to alcohol, or it may be used with a small percent, of alcohol. 22 Of course, for economy of space and alcohol, all the lots of one species may be kept in one jar, each in a separate vial or piece of cheesecloth. 23 Of course, in field work the exact proportion is not vital. In general, it is best to use a mixture of three parts of water to one of alcohol at first, then a half and half mixture, and then the permanent strength. The first and second mixtures may be kept and used repeatedly, occasionally adding a little alcohol to keep up the strength. 1898.] NATURAL SCIENCES OF PHILADELPHIA. 257 To dissect slugs use a small pan, say 4x6x1* inches, with a layer of blackened wax on the bottom. Only a pair of fine scissors, a pair of fine-pointed tweezers, a small scalpel and a supply of fine pins, with, of course, the small lens usually carried by naturalists, is necessary. Cut the outer integument across the head and along the left side, pin sole down in the pan, with water enough to cover, open by turning the dorsal integument to the right, and cut the rectum where it enters the back. The digestive tract may then be studied by picking awa}7 the liver, and, with ordinary care, the genitalia may be removed and isolated by cutting out a small area around the genital orifice. After observing its insertion, the penis retractor may be cut. If specimens are abundant, use another for the examination of the muscles and pal Hal organs. Open by cutting just above the foot groove all around the body; remove the sole, pin back downward in the dissecting pan and remove the digestive and genital systems, care being taken to break no muscles. The whole retractor system will then be seen, and after study the muscles may be cut and the diaphragm carefully removed, disclosing the kidney, heart and lung, as seen in the figures on Plate XV. Use a large slug to begin with, such as Limaxmaximns, the Ario- limaces or Aphallarion, and no difficulty not readily overcome will be encountered. BIBLIOGRAPHY. Eeferences cited under the several genera and species comprise all or nearly all writings upon American Arionidce. A catalogue of the foreign papers con- sulted in our studies would unnecessarily extend this article, as the literature is given almost in full in one or other of the following papers, which we have found of especial use. Godwin- Austen, H. H. Land and Freshwater Mollusca of India, Pt. I, pp. 46-65 (1882). Simroth, H. Yersuch einer Naturgeschichte der deutschen Nacht- schnecken und ihrer europiiischen Yerwandten. Zeitschr. f. wissensch. Zool., 1885, pp. 203-366. Bibliography on pp. 359-361. Simroth, H. Beitriige zur Kenntniss der Nachtschnecken. Nova Acta k. Leop.-Carol. deutschen Akad. Wissensch., LIY, No. 1, pp. 1-91 (1889). Scharff, R. F. The slugs of Ireland. Sci. Trans. Boy. Dublin Society, IV, Ser. 2, pp. 513-562. Bibliography, pp. 557, 558 (1891). Simroth, H. Die Nachtschnecken der portugesisch-azorischen Fauna. Nova Acta, etc., LVI, pp. 201-424 (1891). Bibliography on pp. 416-419. Cockerkll, T. D. A. Check-List of Slugs. The Conchologist II, p. 158. Collinge, W. E. On some European Slugs of the Genus Arion. Proc Zool. Soc. London, 1897, p. 439. 258 PROCEEDINGS OF THE ACADEMY OF [1898. DESCRIPTION OF PLATES. Plate IX. Figs. 1, 2. Hemphillia glandulosa Bid. & Binn. Dorsal outline and lateral aspect of a specimen from Astoria, Oregon (Hemp- hill, coll.), Mus. no. 71,161. m, mantle; sh, exposed surface of shell. Figs. 3, 4. Hemphillia camelus Pils. & Van. Lateral and dorsal aspects of the type specimen. Old Mission, Idaho. Mus. no. 63,926. Figs. 5, 6. Hesperarion niger (J. G. Coop.). Ventral and lateral aspects of a maculated individual. Santa Clara, Cal. Mus. no. 71,198. Figs. 7, 8. Prophysaon cceruleum Ckll. Dorsal and lateral aspects of a specimen which has lost its tail by self-amputation. Olyru- pia, Washington. Mus. no. 63,913. Figs. 9, 10, 11. Prophysaon cceruleum Ckll. Lateral, anterior and dorsal aspects of the self-amputated tail of a specimen from Seattle, Washington. No. 71,074. Figs. 12, 13, 14. Anadenulus Cockerelli (Hemph.). Ventral, lat- eial and dorsal aspects of one of the original specimens, from Julian City, San Diego Co., California. Mus. no. 63,895. Plate X. Figs. 15, 16. Prophysaon foliolatus (Gld.). Lateral and dorsal views of a typical specimen from Seattle, Washington. Mus. no. 71,072. Fig. 17. Prophysaon foliolatus (Gld.) Same specimen, the mantle turned backward to show position of its anterior insertion. Figs. 18, 19. Prophysaon Andersoni (J. G. Coop.). Oakland, California. Mus. no. 69,010a. Figs. 20, 21, 22. Propthysaon Andersoni (J. G. Coop.), San Juan Island, Washington. Mus. no. 63,912. Figs. 23, 24. Prophysaon fasciatum Ckll. Seattle, Washington. Collected in March or April, 1896. Mus. no. 68,025. Figs. 25, 26. Prophysaon fasciatum Ckll. Lateral views of two individuals from Seattle, Washington. Fig. 27. Prophysaon fasciatum Ckll. Same individual as fig. 26, with mantle turned backward to show position of its anterior insertion. Plate XL [All figures represent the digestive tract viewed from above. A. gl., albumen gland; B. d., bile duct; P.m., buccal mass; 6r1-t, first, second, third and fourth folds of the gut; Gen. or., exter- nal genital orifice ; L, liver ; o. t., ovo-testis ; sp., spermatheca ; T, tail ; ut., uterus ; vag. vagina.] 1898.] NATURAL SCIENCES OF PHILADELPHIA. 259 Fig. 28. Prophysaon Andersoni (Coop.). Oakland, Cal. Mus. no. 69,010a. Fig. 29. Prophysaon Andersoni (Coop.). California. Mus no, 71,071. Received from W. G. Binney as P. Hemphilli B. & Fig. 30. Prophysaon cceruleum Ckll. Fig. 31. Binney a notabilis Cooper. Guadalupe Island. Mus.no. 71,923. Fig. 32. Prophysaon folio latum (Gld.). Seattle, Wash. Fig. 33. Hesperarion niger (Cooper). California. Mus. no. 71,- 078. o. t., ovo-testis ; L, liver, I7, tail. Fig. 34. Prophysaon fasciatum Ckll. Seattle, Wash. Mus. no. 68,026. Salivary glands and anterior portion of liver removed, genitalia and digestive tract in situ. Fig. 35. Anadenulus Cockerelli (Hemphill). One of the original lot. Fig. 36. Hemphillia camelus Pils. & Van. Old Mission, Idaho. Mus. no. 63,926. o. t., ovo-testis. Plate XII. \_Epi., epiphallus; p. p., penis papilla; r. p. penis retractor; v.d., vas deferens]. Fig. 37. Prophysaon fasciatum Ckll. Seattle, Wash. Mus. no. 68,026a. Perhaps abnormal. Fig. 38. Prophysaon fasciatum Ckll. Same locality. Ovo-testis. Fig. 39. Prophysaon fasciatum Ckll. Same locality. Mus. no. 68,025. Fig. 40. Same specimen, atrium and base of the epiphallus, the binding muscle removed. Fig. 41. Hemphillia camelus Pils. & Van. Type specimen. Mus. no. 63,926. Fig. 42. The same, penis opened. Fig. 43. Hesperarion niger (Cooper). Spermatophore. Fig. 44. Hesperarion niger (Cooper). Santa Clara, Cal., collected Nov. or Dec, 1896. Fig. 45. Hesperarion niger (Cooper). Mus. no. 71,078. Apex of penis opened. Fig. 46. The same, side view of penis-papilla. Fig. 47. Hesperarion niger (Cooper). Mus. no. 71,077. Fig. 48. The same. Spermatheca. Fig. 49. Hemphillia grandulosa B. & B. Apex of penis opened, showing papilla. Fig. 50. Hemphillia glandulosa B. & B. Lower portion of genital system. Astoria, Oregon. Plate XIII. [/. ov., free oviduct ; muse., muscle connecting atrium and epiphal- lus ; sp., sp. d., spermatheca and its duct ; vag., vagina ; ped., peduncle of the epiphallus.] 260 PROCEEDINGS OF THE ACADEMY OF [1898. Fig. 51. Prophysaon eoeruleum Ckll. Seattle, Washington. Figs. 52, 53. Prophysaon eoeruleum Ckll. Olympia, Washington. The pedicel of epiphallus is seen in fig. 53. Fig. 54. Prophysaon Andersoni (?) var. Cascade Springs, Wash- ington. Mus.no. 71,647. Fig. 55. Prophysaon foliolatum (Gkl.). Seattle, Washington. Mus. no. 71,072. Typical form. Fig. 56. The same. Median transverse section of the epiphallus. Fig. 57. Prophysaon foliolatum (Gld.). Another specimen from the same locality. Fig. 58. The same, a smaller specimen not mature. Fig. 59. Prophysaon Andersoni (Cooper). Oakland, Cal. Mus. no. 69,010. Fig. 60. Prophysaon Andersoni (Cooper). California. Mus. No. 71,071. Received from W. G. Binney as P. Hemphilli B. & B. Fig. 61. Prophysaon Andersoni (Cooper). Oakland, Cal. Mus. no. 69,010. Fig. 62. Prophysaon Andersoni (Cooper). Spermatophore. Plate XIV. [The retractor muscle systems are all represented as seen from be- neath, ao, aorta ; c. a., cephalic artery ; e. r., eye retractor ; G, intestine ; I. t. r., left tentacle and eye retractor ; ovid. r., re- tractor of the oviduct; p, penis; ph. r, pharynx or buccal re- tractor ; ret., retensor muscle ; r. p., penis retractor ; r. s., rad- ula sack ; r. t. r., right tentacle retractor ; sp. r, retractor of the spermatheca ; t r, tentacle retractor ; vag., vagina ; vag. r., va- ginal retractor ; v. a, visceral artery.] Figs. 63, 64, 65. Binney a notabilis Cooper. Guadalupe Island. Ventral and lateral aspects of an alcoholic specimen, and the retractor system. Fig. 66. Ariolimax Columbianus (Gld.). Fig. 67. Aphallarion Buttoni Pils. & Van. Fig. 68. Anadenulus Cocherelli (Hemph.). Fig. 69. Hemphillia camelus Pils. & Van. Mus. no. 63,926. Fig. 70. Prophysaon foliolatum (Gld.). Mus. no. 71,073. Fig. 71. Hesperarion niger (Cooper). Mus. no. 71,078. Fig. 72. Arion hortensis Fer. Seattle, Wash. Mus. no. 68,023. Plate XV. [Pallial organs, seen from below, the diaphragm removed, a, auri- cle ; ao, aorta ; k, kidney ; I, lung; p. a., pulmonary or breath- ing aperture; ph.r., pharynx or buccal retractor muscle; p.v, pulmonary vein ; r, G\ rectum ; r. t r, right tentacle retractor ; ur, secondary ureter ; v, ventricle.] Fig. 73. Ariolimax Columbianus (Gld.). Maculated specimen from near Oakland, California. Pallial region from below, with pulmonary net work of the lung roof. 1898.] NATURAL SCIENCES OF PHILADELPHIA. 261 Fig. 74. The same, showing main ramifications of excretory canals in kidney. Fig. 75. Anadenulus Cockerellii (Hemp.). Fig. 76. Aphallarion Buttoni Pils. & Van. Fig. 77. Hesperarion niger (J. G. Coop.). Mus. no. 71,078. Fig. 78. Hemphillia camelus Pils. & Van. Fig. 79. Avion hortensis Fer. Specimen from Seattle, Wash. Mus. no. 68,023. Fig. 80. Prophysaon foliolatum (Gld.). Specimen from Seattle. Wash. Mus. no. 71,073. Fig. 81. Ariolimax columbianus (Gld.) End of tail, lateral view. Figs. 82, 83. Avion hortensis Fer. Seattle, Washington. Fig. 84. Hesperarion niger (Coop.). Oblique view of end of tail, showing pore. Plate XVI. Fig. 85. Hemphillia camelus Pils. & Van. Central, first lateral, and three marginal teeth. Fig. 86. Prophysaon cozruleum Ckll. Group of outermost marginal teeth. Fig. 87. Binneya notahilis Coop. Jaw. Fig. 88. Binneya notabilis Coop. Teeth. Fig. 89. Prophysaon Andersoni (Coop.), var. ? Mus. no. 71,647. Cascade Springs, Washington. Fig. 90. Proj)hysaon foliolatum (Gld.). Typical form. Central, first lateral, and group of marginal teeth. Fig. 91. Prophysaon fasciatum Ckll. Central, first lateral and group of marginal teeth. Fig. 92. Prophysaon Andersoni (Coop.). Jaw. San Juan Island. Mus. no. 63,912. Fig. 93. Outer marginal and lateral teeth of same individual. Fig. 94. Prophysaon fasciatum Ckll. Jaw. Mus. no. 68,026. Seattle, Washington. Fig. 95. Much magnified portion from median part of another similar jaw of the same species. Fig. 96. More enlarged basal margin of same. Fig. 97. Prophysaon humile Ckll. Much magnified portion of the basal margin of a striated jaw. Seattle, Washington. Fig. 98. Prophysaon foliolatum (Gld.). Jaw. Mus. no. 71,072. Seattle, Washington. 262 PROCEEDINGS OF THE ACADEMY OF [1898. May 3. The President, Samuel G. Dixon, M. D., in the Chair. Fifty-three persons present. Papers under the following titles were presented for publication : — "Notes on Mr. Meehan's paper on the Plants of Lewis and Clark's Expedition across the Continent, 1804-06." By Dr. Elliott Coues. "List of Bats collected by Dr. W. S. Abbott in Siani." By Gerrit S. Miller, Jr. May 10. The President, Samuel G. Dixon, M. D., in the Chair. Twenty-six persons present. Papers under the following titles were presented for publication : — "Certain Aboriginal Mounds of the South Carolina Coast." By Clarence B. Moore. " Certain Aboriginal Mounds of the Savannah River." By Clarence B. Moore. "Certain Aboriginal Mounds of the Altamaha River." By Clarence B. Moore. " Recent Acquisitions." By Clarence B. Moore. " Environmental and Sexual Dimorphism in Crepidula." By E. G. Conklin. May 17. Mr. Charles P. Perot in the Chair. Thirty-six persons present. Papers under the following titles were presented for publication : — " Descriptions of five New Phyllostome Bats." By Gerritt S. Miller, Jr. " Chitons collected by Dr. Harold Heath at Pacific Grove, near Monterey, Cal." By H. A. Pilsbry. "Some New Species of Diatoms." By C. S. Boyer. The deaths of Theodore Wernwag, May 1st, and of J. Wain Vaux, May 16th, members were announced. 1898.] natural sciences of philadelphia. 263 May 24. The President, Samuel G. Dixon, M. D., in the Chair. Forty persons present. MPv. Charles Morris read a paper on the antiquity of Man from the standpoint of evolution. (No abstract). May 31. The President, Samuel G. Dixon, M. D., in the Chair. Twenty-one persons present. A paper entitled " Botanical Observations on the Mexican Flora, especially on the Flora of the Valley of Mexico." By J. W. Harshberger, M. D., was presented for publication. Papers under the following titles were accepted for publication in the Journal : — " Certain Aboriginal Mounds of the South Carolina Coast." By Clarence B. Moore. " Certain Aboriginal Mounds of the Savannah River." By Clarence B. Moore. "Certain Aboriginal Mounds of the Altamaha River." By Clarence B. Moore. " Recent Acquisitions." By Clarence B. Moore. The following were ordered to be printed : — 26-4 PROCEEDINGS OF THE ACADEMY OF [1898. MATERIALS TOWARD A NATURAL CLASSIFICATION OF THE CYLIN- DRELLOID SNAILS. BY HENRY A. PILSBRY AND E. G. VANATTA. While recording some recent additions to the North American landsnail fauna with the intention of revising the " Check List " of United States land mollusks published in these Proceedings for 1889, the attention of the senior author was recalled to the rejection of the generic name Cylindrella by Messrs. Harris and Burrows in 1891, and their substitution of a new name for the group. Upon compiling a list of the generic and subgeneric names which have been applied to species of " Cylindrella," it became obvious that a thorough taxonomic revision was urgently needed. In order to as- certain which of the numerous names should be retained as valid, to place these upon a solid basis, and to reduce the remainder to synonyms, it was found necessary to supplement a review of the lit- erature of the group by an examination of the snails themselves, especially with reference to the radula?, and the internal characters of the shells, revealed by a study of sections cut to expose the inter- nal columella or axis. This detailed examination has been made chiefly by the junior author of this paper. The characters of the radula have been utilized as a basis for classification by Crosse and Fischer in 1870, their paper marking an epoch in the taxonomic history of this family. W. G. Binney has added to our knowledge of this subject upon the lines laid down by the French writers ; and later, Strebel and Pfeffer, in their sug- gestive and original series of papers upon the Mexican fauna, have made important contributions toward a rational classification of the group. There are many other writings bearing upon the nomen- clature of the Cylindrellas, but no others of importance for original facts or views concerning their phylogeny or structure, aside from mere species work. The external conchologic characters of the Cylindrellas are well known by the writings of Pfeiffer, Poey and others, but the modifi- cations of the internal armature have been far less fully elucidated. A portion of PfeifFer's descriptions mention briefly the internal structure, and some of the plates of the Novitates Conchologiece 1898.] NATURAL SCIENCES OF PHILADELPHIA. 265 and Malakozoqlogische Blatter represent it ; and Arango, in his Contribution a la Fauna Malacologica Cabana, notes the internal structure of the Cuban species. Most of these observations, how- ever, are not sufficiently detailed or exact to meet the requirements of the case, now that a classification is based largely upon internal structure ; and our own work is therefore founded wholly upon the study of a series of sections including nearly every species in the collection of the Academy. Without entering into any elaborate expose or criticism of the work of former authors upon the Cylindrellas, attention should be directed to the contention of Crosse & Fischer1 and later of Fischer2 that the series should be distributed between two family groups, the CyUndrellidce and the Pupidce, a conclusion based wholly upon the structure of the teeth and jaws ; the first family having greatly mod- ified teeth and plaited jaw, the second having normal dentition and solid jaw. That this splitting of the Cylindrellas into two is an unnatural division, seems to us to be proven by the following considerations : (1) The discovery of completely Cylindrelloid shells (Epirobia) with the " normal " type of teeth. (2) The presence of transition stages in the teeth in the genus Holospira, and (3) the recent dem- onstration by the senior author of this paper3 of the rapid changes undergone by the teeth of some gene"ra under the stress of changed habits, without corresponding changes in the rest of the anatomy, as seen in Papuina, Polymita, etc. (4) The general law of change in the structure of the jaw, as illustrated in the families Endodon- tidce and Helicidce, must now be recognized as largely discounting the old value placed upon that organ as a factor in systematic mal- acology ; and in any family of snails we may expect to find both the more primitive plaited and the later solid type of jaw. The final reason for rejecting the idea that any of the group under con- sideration are Pupidce, is that none of them, so far as known, possess the extremely characteristic complication of the male genital organs found in Pupa, Buliminus, Clausilia, and their immediate allies, and which constitute one of the most important characters of the family Pupidce. 1 Journ. de Conchyl., 1870. 2 Manuel de Conchyliologie. 3 Manual of Conchology (2), IX, introduction and portions relating to ar- boreal Helices. 18 266 PROCEEDINGS OF THE ACADEMY OF [1898. Our further observations upou the family may be grouped under five heads : — I. Names applied to generic and minor groups of Cylindrelloid snails. II. Key to the genera and subgenera. III. Classified lists of the species with zoo-geographic and other notes. IV. Brief sketch of other genera of the family. V. Provisional phylogenetic diagram and table of geographic dis- tribution. I. CHRONOLOGICAL LIST OF NAMES APPLIED TO CYLINDRELLOID SNAILS. (Exclusive of those pertaining to Lia, Macroceramus, Holospira, and other generally recognized genera). 1822 (or earlier). Cochlodina Ferussac, Tableau Systematique, etc., p. 24, 61. Under Helix, Ferussac establishes a " Quatorzieme sous-genre. Cochlodine, Cochlodina nobis." The subgeneric definition applies better to Clausilia than to the other forms included by Ferussac in the group ; and, indeed, seems to be based wholly upon that genus. The species of Cochlodina are classified as follows : — * Shell dextral. f Aperture without teeth or lamina?. 1. Peristome not continuous. Premier groupe. Les Pupoides, Pupoides. 493 carinata Gmel. \=Macroceramus lineahis Brug.]. 494 nebulosa nobis, [nomen nudum]. 495 ignijera nobis, [nomen nuduni]. 2. Peristome continuous. Deuxieme groupe. Les Tracheloides, Tracheloides. 496 sloanii nobis, [nomen nuduni]. 497 draparnaldi nobis, [nomen nudum]. 498 petiveriana nobis. [probably=C. eximia Pfr.]. 499 blainvilliana nobis, [nomen nudum]. 500 cylindrus Chemn. \_=Cylindrella]. 501 rosata nobis, [nomen nudum], 502 truncata Dillw. [Undeterminable I^Megalomastoma]. 503 fasciata Lam. [Undeterminable 7=Megalomastoma]. 1898.] NATURAL SCIENCES OF PHILADELPHIA. 267 504 tortuosa Chemn. [= Tortulosa tortuosa, an oriental operculate). 505 gracilicollis nobis, [iiomen nudum~\. 506 perplicata nobis, [iiomen nudum\. 507 collaris nobis. [=='Oylindrella]. 508 subula nobis, \_nomen nudum"]. 509 antiperversa nobis, [iiomen nudum]. ft Aperture armed with large folds or long teeth. 510 gargantua nobis \_nomen nudum=Odontostomus]. ** Shell sinistral. 1. Aperture without laminse. Troisieme groupe. Les Anomales, Anomales ; Pup>a Drap. 511 perversa L. [=Balea]. 512 chemnitziana nobis. [Cylindrella elongata Chemn.]. 2. Aperture armed (with laniinse or an elastic operculum). Quatrieme groupe. Les Clausilies, Clausilia^; genre clausilie Drap. [Includes the species of Clausilia, with some nomina nuda per- haps pertaining to other groups]. It will be seen that Cochlodina is a miscellaneous group, including species of at least six modern genera, all of which have since been named. Under these circumstances it had better be left as a synonym of Clausilia, as the diagnosis precludes its use for any of the other groups included. 1828. Brachypus Guilding, Zool. Journal, III, p. 167. Pro- posed for B. costatus Gldg. Preoccupied in Aves by Swainson, 1824, and in Diptera by Meigen in the same year. 1837. Urocoptis Beck, Index Moll., p. 83. Species, petiverana Fer., blainvilliana Fer., cylindrus Ch., Dw. and Wood ; rosata Fer., ■glandula B., abbreviata B., coardata B., List H., XXI, 17; trunca- tula Lam. (Clausilia), gracilicollis Fer. J. E. Gray, in Proc. Zool. Soc. Lond., 1847, p. 177, selects o 3 o a u 5 o u o" oj CD Q5 03 a 03 a -a *r3 03 03 03 u o o u 03 O o '3 W a 03 d O Xi 03 m - - _ _ _ * * * _ — — - - - * * - - *~ — — — — * * - - - - - - * * * - — - — — — — — * — - - - - - - - * - - - - - - * - * - — - - — - - — * — - - - - - - - * - - - - - - - - * - - - - - - - - * - - - - - - - - * - - - - - - * - - - - - - - - - - * - * - * * * * * * * * - * * * * * * * * - - * - - - * * - - - - * - - - - - - ~ — * * * * * * * * - - * - - - - - - * * - - - - - - — * — — — — — — — Cura- cao. — — * * - * * 03 O CO 1898.] NATURAL SCIENCES OF PHILADELPHIA. 285 SUGGESTED PHYLOGENY OP THE GENERA AND PRINCIPAL SUBGENERA OF UROCOPTID^E. Apoma N. Mychostoma Ufoscala. Congylostomo Siroqhvnn \ BBACHYPODELLA Idiostemma-~^_-Arangia TOOCOPTIS ANOMA MACEOCEBAMUS CERION HOL0S„Bf^°B" „_,„ BERENDTIA ELOCENTRUM ' EUCALODIUM Anisospira MEGASPIEA Fig. 1. Fig. 2. Fig. 3. Fig. 4. Fig. 5. Fig. Fig. Fig. 6. 7. 8. Fig. Fig. 9. 10. EXPLANATION OF PLATES. Plate XVII. Megaspira elata Gld. Half of a transverse row of teeth (the outermost marginals placed above, to the left). Epirobia polygyra (Pfr.). The same, a few outermost marginal teeth lacking. Anoma maugeri (Wood). Group of teeth from the median part of the radula. Brackypodella (Apoma) elongata (Ch.). Half of a trans- verse row of teeth. Urocoptis cylindrus (Ch.), very small variety from Port- land, Jamaica. Half of a transverse row of teeth. Anoma maugeri (Wood). A lateral tooth seen in profile. Urocoptis (Maceo) interrupta (Gundl.). Section of shell. Urocoptis (Tomelasmus) torquata (Morel.). Section of shell. Urocoptis (Sectilumen) ornata (Gundl.). Urocoptis (idiostemma) uncata (Gundl.). 286 PROCEEDINGS OF THE ACADEMY OF [1898. Plate XVIII. Fig. 11. Urocoptis cylindrus (Chemn.) (C. rosea var. major C. B. Ad.). Fig. 12. Urocoptis (Spirostemma) rubra (C. B..Ad.). Fig. 13. Urocoptis (Tomelasmus) wrighti (Pfr.) var. Fig. 14. Urocoptis (Pycnoptychia) humbohltiana (Pfr.). Fig. 15. Urocoptis (Esochora) strangulata (Poey). Fig. 16. Urocoptis (Gongylo stoma) pruinosa (Morel.). Fig. 17. Urocoptis (Gongylostoma) elegans (Pfr.). Fig. 18. Urocoptis (Callonia) dautzenbergiana (Crosse). Fig. 19. Brachypodella (Mychostoma) agnesiana (C. B. Ad.). Fig. 20. Urocoptis (Arangia) soiverbiana (Pfr.). Fig. 21. Brachypodella (Apoma) elongata (Chemn.). Fig. 22. Urocoptis (Amphicosmia) salleana (Pfr.). 1898.] NATURAL SCIENCES OF PHILADELPHIA. 287 CHITONS COLLECTED BY DR. HAROLD HEATH AT PACIFIC GROVE, NEAR MONTEREY, CALIFORNIA. BY H. A. PILSBRY. During the summer of 1897 Dr. Heath collected a series of inver- tebrates and fishes for the Academy, including some twenty-four species and varieties of Polyplacophora. As he has kindly engaged to collect again during the present season, a full report on the Chitons, with illustrations of new, unfigured and unusual forms may be deferred until further specimens come to hand ; but it may be well to enumerate the forms already seen, and describe two which seem to be new. It is evident that the Mopalias require more study than has yet been given them. At Pacific Grove, the typical muscosa, typical lignosa and typical Hinclsii occur, without, so far as the series seen shows, any specimens of intermediate character. The reference of these to one species may, therefore, have been premature. A Mopalia described below, differs from those hitherto known in the perfectly regular form of the tail valve, which is like that of Ischnochiton, thus breaking down, in large measure, the distinction between the Ischnochitonidce and the Mopaliidce. This lawless species is new, and I have given myself the pleasure of associating the name of my friend Dr. Heath with it. The occurrence of two seven-valved adult monsters is also notable. I shall return to these on a later occasion. LEPIDOPLETJRID^I. Lepidopleurus rugatus Cpr. Lepidopleurus nexus Cpr. ISCHNOCHITONID^. Tonicella lineata Wood. Trachydermon (Cyanoplax) Raymondi Pils. A small form of the species, occurring in tide pools. Trachydermon (Cyanoplax) Hartwegi Cpr. Ischnochiton radians Cpr. This species is very similar to I. inter stinctus Gld., but the teeth are longer and the slits decidedly deeper. 288 PROCEEDINGS OF THE ACADEMY OF [1898. Isohnocbiton scabricostatus Cpr. var. Ischnocbiton regularis Cpr. One specimen has but seven valves, but in all other respects is perfectly normal. Iscb.nocb.iton Mertensii Midd. Iscbnocbiton Cooperi Cpr. Iscbnocbiton (decipiens var. ?) sinudentatus Cpr. Ischnocbiton (Stenoradsia) Magdalenensis Hinds. Callistocbiton crassicostatus Pils. Callistocbiton palmulatus var. mirabilis Pils. Cbaetopleura gemmea Cpr. Nuttallina Californica ' Nutt. ' Rve. NuttallinaThomasi Pilsbry, n. sp. In tide pools with Tr. Raymondi. See below. MOPALIIDiE. Mopalia muscosa Grid. Typical. Mopalia muscosa lignosa Gld. Typical. Mopalia muscosa Hindsii 'Sow.' Rve. Typical. Mopalia Heathii Pilsbry. See below. Mopalia ciliata Sow. Typical. Placipborella velata Cpr. ACANTHOCHITID.SI. Katharina tunicata Wood. Cryptochiton Stelleri Midd. One full grown specimen is 7-valved, otherwise normal. Mopalia Heatbii n. sp. Oblong, rather elevated, carinated, with nearly straight side slopes ; surface smoothish to the naked eye, lusterless, and in color (1) olive-green with some lighter spots, or purplish maculation, or slight roseate suffusion, or (2) vivid red, with scattered blue spots. Valves shaped as in M. lignosa, but without a median anterior projection of the tegmentum; the intermediate valves very faintly radially trisulcate at the sides, the anterior two grooves defining the low, slight and inconspicuous diagonal rib, the lateral areas not raised ; entire surface very finely and evenly granulate, the granules small, rather pointed, separated, intervals very minutely, radially wrinkle-granulate. Anterior valve with a few faint, shallow radial furrows. Posterior valve with semicircular posterior outline, the mucro in front of the middle of tegmentum, profile of the surface in front of it convex, that of the posterior slope decidedly concave. 1898.] NATURAL SCIENCES OF PHILADELPHIA. 289 Interior deep rose color or slightly purplish ; sutural laminae and sinus about as in lignosa. Teeth rather long and somewhat rough- ened, as in lignosa. Valve i with 8 slits ; ii-vii with 1-1 ; valve viii entirely " Ischnoid," with regular, crescentic insertion plate, cut by 7 or 8 slits, which are somewhat closer posteriorly ; no sinus behind. Girdle leathery, nude except for solitary or two or three closely grouped long bristles at all or part of the sutures, one on each side of the head valve, and two behind the tail valve. Gills about 25 on each side, not extending quite to the anterior end of the foot. Length 25, width 12 mm. (dried specimen), or smaller. In one specimen there are 9 bristles on each side and one in the middle in front. Another lacks this median bristle ; and in still another, some of the sutures are without bristles. In all, some of them are broken off close to the girdle, leaving only stumps or pores. This form resembles M. simiata and imporcata in the sutural bristles, but differs from them in sculpture and form of the tail valve. The latter is completely as in Ischnochiton, and its form is approached only by M. acuta Cpr., which however, has a slight caudal sinus, much stronger sculpture, more depressed and more posterior mucro, and scattered hairs on the girdle, without sutural bristles. It is also blue-green or pale blue inside, while 31. Heathii is rose colored. One of the specimens was dredged in 17 fms. ; station of the others unknown. Nuttallina Thomasi n. sp. General form oblong, rather depressed, not keeled dorsally ; sur- face granulose when not eroded. Color blackish or dark brown, with a whitish band on each side of the median line of back, or irre- gular whitish maculation ; girdle dark. Intermediate valves short and wide, with a slight or hardly notice- able depression on each side of the jugum, and others in front of and behind the scarcely defined, obsolete, diagonal convexity; the ante- rior and posterior margins subparallel, slightly arcuate. Anterior valve granulate, without radial ribs, the posterior margin excavated mesially. Posterior valve with tegmentum slightly wider than the anterior, the obtuse mucro somewhat behind the middle. Interior blue-green, with the area behind the valve-callus dark brown, or livid purplish, with light sutural laminae and blue-green area behind the sinus. Slits in valve i, 9 or 10; valves ii to vii, 1-1 ; valve viii, 10 or 11. Teeth rather separated, those of valve i 290 PROCEEDINGS OF THE ACADEMY OF [1898. unequal, slightly rugose outside; posterior tooth of valves ii to vii small, very obliquely directed forward ; teeth of valve viii very short, strongly directed forward and roughened. Sinus wide and square, spongy, the area behind it transversely grooved. Eaves rather wide, " spongy " or porous. Girdle sparsely covered with short, rigid, obtuse, glossy spines of a blackish-brown color, or occasionally some are whitish. Gills in type specimen, 26 on left, 23 on right side ; not quite reaching the anterior end of the foot. In another there are 23 on the left, 25 on the right side. Length 15, breadth 8 mm., or smaller. Pacific Grove, in small tide-pools 4 to 8 ft. above mean tide mark. This species differs markedly from N. Californica (' Nutt.' Rve.) and N. fluxa (Cpr.)1 in the shorter valves, lack of radial ribs on the anterior and intermediate valves, and more anterior mucro of the posterior valve, and the single slitting of valves ii to vii. I at first considered it a Middendorffia, but the girdle is like that of Ntittal- lina, not having the peculiarly modified spines of the Mediterranean Middendorffia. It lives with a small form of Traehydermon ( Cyano- plax) Raymondi, which is much more numerous in the tide-pools. From that species it may be known by the spiny girdle. Nearly all the specimens collected are much eroded. This species may be considered the type of a new subgenus of Nuttallina, with the following differential characters: Intermediate valves with 1-1 slits; anterior valve not radially ribbed ; posterior valve with the mucro post-median, but not terminal. Other char- acters as in Nuttallina. At Mr. Heath's request, it is named in honor of Mr. Thomas, who found the first specimens. 1=Ch. scaber Rve., 1847, not of Blainville, 1825. 1898.] NATURAL SCIENCES OF PHILADELPHIA. 291 NOTES ON MR. THOMAS MEEHAN'S PAPER ON THE PLANTS OF LEWIS AND CLARK'S EXPEDITION ACROSS THE CONTINENT, 1804-06. BY DR. ELLIOTT COUES. Many years ago I prepared for publication in these Proceedings a paper on the plants of Fort Macon, N. C. It never appeared, because I submitted it to Professor Asa Gray, who told me it was a very good one, but asked me what was the use of printing it. Taking the hint to heart, I have from that day to this curbed any aspira- tions I may have felt to botanical authorship ; and it now behooves me to explain why I presume to have anything to say on a botani- cal subject. In fact, I do not now write on Lewis and Clark's plants, but solely on the localities where their plants were procured. I do not pretend to any knowledge of botany, but if there is any- thing I do know, it is exactly where Lewis and Clark were on every day, almost every hour, from start to finish of their famous expedi- tion. Consequently, I can give the precise locality of every speci- men which bears a date in the herbarium that Mr. Meehan recently discovered to be still extant, and thus available for the determina- tion of so many of the type specimens of Pursh's species. This discovery seems to me one of the happiest and most important that could have been made, and I doubt not that Mr. Meehan's identifi- cations of these plants, with the assistance of Messrs. Robinson and Greenman, will be justly regarded as a boon to working botanists. I could wish that these writers had effected what I conceive should have been done to set forth the whole matter in its proper light, but since they did not give the requisite precision to Pursh's generally loose and vague, sometimes wholly erroneous, indications of locality, that duty seems to devolve upon me. In reading Mr. Meehan's paper, I have been little short of astounded at the kind of geography which seems to have answered the purposes of the botanists concerned in this case. Nothing of the sort would satisfy a zoologist, I am sure. To describe a new spe- cies upon a type specimen, assigned to " the banks of the Missouri," or to " the valleys of the Rocky Mountains," would not be tolerated in zoology, and should not be endured in botany, when the data 292 PROCEEDINGS OF THE ACADEMY OF [1898. required to pin every dated specimen down to the precise spot where it was collected are ample, and easily accessible in the edition of Lewis and Clark which I brought out in 1893. Neither praise nor blame attaches to me for any of the botany which appears in that work. As stated in my preface, most of the botanical determinations were those of Mr. F. H. Knowlton, whom I engaged for that purpose, and whose identifications of the plants mentioned or described by Lewis and Clark I accepted without question in any instance. That they should all prove to be correct was not to be expected, and I am now aware of several errors. In the case of the trees, the mistakes have, perhaps, all been detected and corrected in the admirable critical review lately published by Professor C. S. Sargent in Garden and Forest, Nos. 465, 466, Janu- ary 20th and 27, 1897. I could wish that the same searchlight had been turned by Mr. Meehan and his collaborators upon the rest of the botany in my book, and venture to suggest that the whole sub- ject will not be put in its full light or final shape till this has been thoroughly well done. Great as are the obligations under which Mr. Meehan and his as- sistants have placed all who are in any way interested in this sub- ject, in the paper which I now proceed to annotate geographically, there remains for some one the agreeable and useful task of review- ing Lewis and Clark's botanical text as distinguished from their specimens. For it is a curious fact, as I find on studying Mr. Mee- han's paper, that the plants of which Lewis and Clark have most to say in their Journal, are not, as a rule, those of which specimens are now extant in their herbarium. Their botany, it may be said, runs in two parallel courses. One of these is represented by the speci- mens which they collected, and which became so many of Pursh's types ; the other, by the herbs, shrubs and trees which they observed, and noted in their narrative, but did not actually collect. Often- times, to be sure, they describe what is in the herbarium, but I should imagine that fifty, if not a hundred species are to be found in the book, no specimens of which are known to be extant. This would appear to me to be a field of research at once alluring and stimulating to some well equipped botanist, and I trust that the work may soon be done once and forever. Lewis and Clark's whole botany could easily be set abreast of the status I have myself been able to confer upon their zoology, their ethnology and their geo- graphy. 1898.] NATURAL SCIENCES OF PHILADELPHIA. 293 With these remarks, which I trust will be found neither ungra- cious nor presumptuous, I proceed to review Mr. Meehan's paper from a purely geographical point of view. I take his list precisely as it stands, assuming the identifications to be correct in every in- stance, and raising no botanical questions whatever. I only follow the zoologists' rules of nomenclature in writing all specific and sub- specific names with a lower case initial letter, all personal names in the genitive case with a single i, all trinomial names without the in- tervention of " var." — a practice which I think most botanists would like, if they could once get used to it. Anemone canadensis L. (A. pennsylvanica L.) August 17, 180If. Missouri River, close to the mouth of the creek on which the Omahas resided ; now Omadi Creek, in Dakota Co., Nebraska. L. & C. there August 13-20, 1804. Anemone quinquefolia L. June 15, 1806. Collins' Creek, a branch of the Kooskooskee ; now Nahwah River, or Lo Lo fork of Clearwater River, in Shoshone Co., Idaho. Clematis douglasi Hook. ft MrsuUsaima Pursh, Fl., 384. No date. Pursh has " plains of the Columbia, May." L. & C. were not on the Columbia itself in May of either year. In May, 1806, they travelled by land approximately up Snake River or Lewis' fork to the mouth of the Kooskooskee, lst-4th, up the Koos- kooskee, 4th-13th, and were at their Camp Chopunnish, on the right bank of the Kooskooskee, nearly opposite but a little below the mouth of Commearp Creek, now known as Lawyer's Canon Creek, till June 10th. This is a notable locality, where many plants were collected in May and June, 1806. The position is in Shoshone Co., across the river from, and nearly opposite, that of present Kamai or Kamiah, in Nez Perces Co., Idaho. Delphinium menziesi DC. April llf., 1806. On the Columbia River, one day's journey by boat below The Dalles, coming up stream. Dentaria tenella Pursh, Fl. 439. April 1, 1806. On the Columbia, at the mouth of Quicksand River of L. & C, now called Sandy River. This explains the state- ment of locality in Mr. Meehan's paper as " Columbia near quick- sands." 294 PROCEEDINGS OF THE ACADEMY OF [1898, Erysimum aspersum DC. E. lanceolatum Pursh, FI. 436, nee R. Br. June 1, 1806. Camp Chopunnish, as above described. This is on the Kooskooskee. But the other specimen which Mr. Meehan adduces from " Rockford Camp, April 17, 1806," is from The Dalles of the Columbia. " Rockford " Camp, elsewhere called " Rocky " or " Rock," is a mistake for Rock Fort or Fort Rock Camp, as L. & C. called it when they were at The Dalles. The position is at the mouth of their Quinett Creek, called Wasco Creek on some maps, and now Mill Creek. The position is one of the best known on the Columbia, Oregon side. L. & C. were there October 17, 1805, going down, and April 15-17, 1806, coming up. Cleome integrifolia T. & G. C. serrulata Pursh, Fl. 441. August 25, 180 Jf. At or very near mouth of Vermilion River, Clay Co., South Dakota. (Whitestone River of L. & C.) August 29, 1806. At or near mouth of White River, Lyman Co., South Dakota. Cerastium arvense L. C. elongatum Pursh, Fl. 321. April 22, 1806. On the Columbia, between Des Chutes and John Day Rivers (the Towanahiooks and Le Page's Rivers of L. & C). " Plains of the Columbia," as given, is therefore quite right. Malvastrum coccineum Gray. Grietaria coccinea Pursh, Fl. 453. July 20, 1806. " Plains of the Missouri," as given, is a mistake, unless the phrase is used in a very broad sense. On this date the expedition was widely separated. Lewis was high up on Maria's River near its forks in N. W. Montana ; Clark was on the Yellow- stone, at Camp Cottonwood, above Clark's fork of that river. Clark was busy building boats, and no doubt Lewis collected the plant. The latter botanized that day, as we see by his Journal, p. 1090 of my edition. Linum lewisi Pursh, Fl. 210. July 9, 1806, and July 19, 1806, for the same specimen ; the dates conflict, but " valleys of the Rocky Mountains," as given, can be right for neither date in 1806, if the locality of this particular specimen is meant. On July 9, 1806, Lewis was on Sun River, at or near Fort Shaw, Montana. On July 19, 1806, he was high up on Maria's River; both of these places are out of the mountains. But probably the label was only meant to indicate the general range of the plant, not the exact locality of the specimen. Peren- 1898.] NATURAL SCIENCES OF PHILADELPHIA. 295 nial flax was first noticed by the expedition on the Missouri above the Great Falls " for several days" before July 19, 1805, below, at and above Dearborn's River, in the vicinity, not close, of Helena, Montana. The species then described was identified as L. perenne by Mr. F. H. Knowlton, p. 423 of my edition of the work. Some of the country traversed in July, 1805, distinctly includes "valleys of the Rocky Mountains," and I suspect that " 1806 " should read 1805 ; also, that July " 9 " and " 19 " are merely scribal duplication of a single date. Claytonia lanceolata Pursh, Fl. 175, t. 3. June 27, 1806. "Headwaters of the Kooskooskee" is quite right. L. & C. were on the Lo Lo or Northern Nez Perce Trail, along the divide between sources of both N. and S. forks of that river, in central Idaho. It is the same day on which they notice Erythronium grandiflorum. Claytonia perfoliata Don. (In Mr. Meehan's footnote, p. 19.) March 26, 1806. On the lower Columbia, above Puget's Island and below the Cowlitz River. April 17, 1806. " Rocky Camp," i. e., The Dalles, as above ex- plained. Claytonia sibirica L. (In Mr. Meehan's footnote, p. 19.) Aprils, 1806. In camp on the Columbia, in Multnomah Co., Oregon, about 10 miles above Quicksand or Sandy River; vicinity of the place called Cape Horn. Claytonia linearis Dougl. (In Mr. Meehan's footnote, p. 20.) June 27, 1806. As above said for C. lanceolata. Lewisia triphylla Rob. June 27, 1806. Same as the last. Lewisia rediviva Pursh, Fl. 368. July 1, 1806. At mouth of Traveller's Rest Creek of L. & C, %. e., of the Lou Lou Fork of the Bitter-root River, some 12 miles south of Missoula, Montana. It should be explained " Clark's River," the assigned location of this plant and some others, always means Bitter-root River, in so far as any plants collected are con- cerned. Lewis named Clark's River September 6, 1805, when the expedition was in Ross' Hole near the head of the east fork of the Bitter-root River ; the party went down this river only as far as the Lou Lou Fork just said, up which they turned sharp and so on over 296 PKOCEEDINGS OF THE ACADEMY OF [1898. the Bitter-root range to the sources of the Kooskooskee. They were never on the Clark's River of modern geography, as the great stream of which the Bitter-root is a collateral head does not now bear Clark's name above the junction of the Bitter- root with Hell- gate River. I may add that Letvisia rediviva, the racine amere (or bitter root) of the French, is the plant from which the river, its valley, and the mountain range on the west derive their name. An alternative name of the Bitter-root was St. Mary's River, imposed by Father P. J. De Smet in 1842. Montia parviflora Howell. Claytonia perfoliate/, Pursh, Fl. 176, nee Don. March 26, 1806. As above said for Claytonia perfoliate. April 17, 1S06. As above said for Claytonia perfoliata. Montia sibirica Howell. Claytonia ahinoides Pursh, Fl. 175. April 8, 1806. As above said for Claytonia sibirica. There seems to be a duplication of the record of the same specimens of this and preceding species in Mr. Meehan's main text and footnotes. Pachystima myrsinites Raf. Ilex ? myrsinites Pursh, Fl. 119. June 16, 1806. On the L,o Lo Trail, vicinity of Hungry Creek of L. & C, a branch of the north fork of the south fork of Koos- kooskee River, next east of Collins' Creek. November 16, 1805. In camp on the Columbia in sight of the ocean, at the landward end of Haley's or Baker's Bay, just inside Chinook Point. I heartily agree with Mr. Meehan that the name of this genus should be written Pachystigma. Ceanothus velutinus Dougl. (No date.) Rhamnus purshiana DC. R. alnifolia Pursh, Fl. 166, nee Mchx. May 29, 1806. Camp Chopunnish. Rhus canadensis trilobata Gray. October 1, 180^. In the Little Bend of the Missouri (Lookout Bend of L. & C), at or near the mouth of Cheyenne River. " First discovered in the neighborhood of the Kancez River," i. e., when L. & C. were about the mouth of Kansas or Kaw River, which was reached June 26, 1804; "now very common" means at the date said, Oct. 1, when they were in the said bend. 1898.] NATURAL SCIENCES OF PHILADELPHIA. 297 Cissus ampelopsis Pers. September 14, 1806. " Council Bluffs, Missouri," as given, is not any locality, for Council Bluffs, Pottawattamie Co., Iowa, did not exist in 1806, and the Council Bluff of L. & C. was much higher up and on the other side of the river, where now stands Fort Cal- houn, Washington Co., Nebraska. L. & C. passed it September 8, 1806, coming rapidly down river ; they were, therefore, many miles below when they camped at Leavenworth, Kansas, on the 14th, having come 53 miles that day. Acer circinatum Pursh, Fl. 267. October — , 1805. " Great Rapids of the Columbia." The date can be set closer, as L. & C. did not reach the Cascades till October 30, 1805. The vine maple is fully described on p. 834 of my edition, along with Acer macrophyllum. Acer macrophyllum Pursh, Fl. 267. April 10, 1806. Cascades of the Columbia, on the home voyage. But L. & C. had noticed it in the same region the previous au- tumn. Polygala alba Nutt, P. seneca var. tenuifolia Pursh, Fl. 750. August 10, 1806. At or near White Earth River of L. & C, now Muddy River, a branch of the Missouri, at whose mouth is Williston, Montana, near the east boundary of the Fort Buford military reservation. (Not modern White Earth River, which is a different stream, much lower down.) Amorpha fruticosa angustifolia Pursh, Fl. 466. August 27, 1806. Great Bend of the Missouri, as stated. This formation is below Pierre, South Dakota, and just above the Crow Creek Agency. Astragalus missouriensis Nutt. September 18, year not given. If 1804, one day below the Great Bend of the Missouri, going up ; if 1806, on the Missouri from Grand to La Mine River, within the recent State of Missouri ; most probably 1804. Astragalus mortoni Nutt. September 15, 180Jf. At or near mouth of White River, Lyman Co., South Dakota. September 5, 180J/.. Mouth of the Niobrara River, or within one day above it. 20 298 PROCEEDINGS OF THE ACADEMY OF [1898. Lupinus argenteus Pursh, Fl. 468. July 7, 1806. " On the Cokahlaishkit " — an interesting locality. This is the River of the Road to Buffalo of L. & C, now the Big Blackfoot River, a branch of Hellgate River. On the 7th Lewis was on its headwaters, as this is the day he went over Lewis and Clark's Pass of the Continental Divide to the Middle Fork of Dearborn's River, thus passing from Deer Lodge County to Lewis and Clark County, Montana. Lupinus serioeus Pursh, Fl. 468. June 5, 1806. Camp Chopunnish on the Kooskooskee. Oxytropis nana Nutt. var. 0. argentata Pursh, Fl. 473. July — , 1806. " Near the head of Clark's River " means the Bit- ter-root River at the mouth of its Lou Lou branch, the Traveller's Rest Creek of L. & C, and the date is July 1st or 2d, when Lewis was botanizing as the Journal shows, p. 1065 of my edition. See Trifollum microcephalum, below. Petalostemon violaceus Mchx. Pursh, Fl. 461. July 22, 1806. " On the Missouri ; " impossible. At this date Lewis was on Cut-bank Creek, one of the main headwaters of Maria's River, in N. W. Montana near the foot of the Rocky Mountains, and Clark was on the Yellowstone. No doubt Lewis collected the specimen. September 2d, year not given ; no locality indicated. If 1804, at Bonhomme, South Dakota ; if 1805, on Fish Creek, a tributary of Salmon River, Idaho ; if 1806, at or near James' River, South Dakota. The first and third of these are practically the same locality, as the expedition crossed the years 1804 and 1806 in pass- ing Bonhomme Island on September 1st. I presume the year is 1804, for, in the case of the related Psoralea argophylla, collected October 17, 1804, and in the present case of Petalostemon violaceus, Lewis makes similar remarks on the use of these plants by the Indians in decoctions for wounds. Psoralea argophylla Pursh, Fl. 475. October 17, 1801,.. On the Missouri, very near the mouth of Cannonball River, North Dakota. Psoralea tenuiflora Pursh, Fl. 475. September 21, 1801,. Great Bend of the Missouri, as stated. 1898.] NATURAL SCIENCES OF PHILADELPHIA. 299 Trifolium megacephalum Xutt. Lupinaater macrocephalus Pursh, Fl. 479, t. 23. April 17, 1806. Rock Fort Camp (not " Rockford ") at The Dalles of the Columbia. Trifolium microoephalum Pursh, Fl. 478. July 1, 1806. Same spot as Oxytropis nana, above ; here called u Valley of Clark's River." The Journal, p. 1066 of my edition, speaks of " two species " of clover in this valley, one with a very narrow, small leaf and a pale red flower, the other with a white flower, and nearly as luxuriant in its growth as our red clover. Amelanchier alnifolia Xutt. Pyrus sanguined Pursh, Fl. 340, in part. April 15, 1806. Rock Fort Camp. The species is also recorded repeatedly by L. & C. in widely separated localities ; see my edi- tion, pp. 277, 282, 419, 828. Crataegus douglasi Lindl. C. glandnlosue Pursh, Fl. 337. April 29 or 19, 1806 ; for dates conflict in main text and its foot- note. If 19th, the place is Celilo Fails of the Columbia; if 29th, mouth of Wallawalla River, on the Columbia, site of old Fort Walla walla and of modern Wallula. It is also elsewhere reported, by L. & C. on the Columbia, much lower down. Mr. Meehan refers to the Journal of January 20, 1806, but there is no allusion to the plant at that date. He evidently means the description of No. 12 of the botanical list drawn up at Fort Clatsop ; this is found on p. 826 of my edition, but there are no dates in this list. I am sorry to find that Mr. Knowlton has discredited the identification, supposing No. 12 to be Pyrus rivularis. It is correctly given, however, on p. 908, March 25, 1806, when the expedition was in the vicinity of Puget's Island. Again, on June 10, 1806 (p. 1041 of my edition), when L. & C. left Camp Chopunnish, they speak of the " purple haw," and Mr. Knowlton there bracketed Viburnum pauciflorum — no doubt in error, as pointed out by Professor C. S. Sargent in his admirable paper on the trees of the expedition in Garden and For- est, No. 466, January 27, 1897, p. 39. Geum triflorum Pursh. G. cilatum Pursh, Fl. 352. June 12, 1806. Camp on Quamash Flats, the modern Weippe or Oyipe Prairie in Shoshone Co., Idaho, on the Lo Lo Trail near the west base of the mountains. Pyrus sambucifolia Cham, and Schl. (?). June 27, 1806. On the Lo Lo Trail, same place as Claytonia lanceolata. 300 PROCEEDINGS OF THE ACADEMY OF [1898 Potentilla anserina L. March 13, 1806. Fort Clatsop, L. & C. winter quarters of 1805- 06, a short distance up their Netul, now commonly called Lewis and Clark's River, a small stream which falls into the Columbia near its mouth on the Oregon side. Potentilla fruticosa L. Pursh, Fl. 355. July 5, 1806. " Prairie of the Knobs," as given, is a remakable place on the Cokahlaishkit or Big Blackfoot River, one day west of Lewis and Clark's Pass, in Deer Lodge County, Montana. It is also called Blackfoot Prairie and Stevens' Prairie, but Lewis did not reach it till July 6th. Primus demissa Nutt. August 10, 1806. " A cherry found near the beaver bents on the Missouri." I do not know what these are, but the place meant is present Beaver Creek, in Flaunery Co., North Dakota, almost on the border of Mountraille Co., about where present White Earth River (not the one so named by L. & C.) falls into the left bank of the Missouri. The Journal of this date, p. 1173 of my edition, has this note : " In the low grounds of the river Captain Clark found today a species of cherry which he had never seen before, and which seems peculiar to this small district of country, though even here it is not very abundant." No identification was offered in my work, as I had no hint of what the species was, and I am particularly j)leased now to find it out. Prunus virginiana L. May 29, 1806. Camp Chopunnish. Prunus 1 June 27, 1806. On the Lo Lo Trail, east of Lo Lo Fork (Col- lins' Creek), and west of the main range of the Bitter-root Mount- ains, Shoshone Co., Idaho. Prunus ? May 7, 1806. Main Kooskooskee River above Colter's or Pot- latch Creek, and below the mouth of the Chopunnish or North Fork. Prunus sp. (P. pumila of Mr. Meehan's footnote.) May 29, 1806. Camp Chopunnish. Purshia tridentata DC. Tigarea tridentata Pursh, Fl. 333, t. 15. July 6, 1806. Prairie of the Knobs, as above described for Potentilla fruticosa. 1898.] NATURAL SCIENCES OF PHILADELPHIA. 301 Rosa woodsi Lindl. September 5, 180^. On the Missouri, immediately above the Nio- brara. October 18, ISOlf.. On the Missouri, immediately above the Can- nonball, not " at or near Fort Mandan " as Mr. Meehan states, but much below that site, which was not reached till the 26th. Mr. Meehan cites May 18, 1806, Camp Chopunnish, as the date on which L. & C. "saw the wild roses in bloom." I find no allusion to roses in the Journal of that day, but on June 10, 1806, when L. & C. had just left Camp Chopunnish, they " observed two species of wild rose, both of a damask-red color." These Mr. Knowlton supposed to be R. nutkana and R. sayi ?, which names were accord- ingly bracketed in my edition, p. 1041. Rubus nutkanus velutinus Brew. April 15, 1806. Rock Fort Camp, on the Columbia. Rubus spectabilis Pursh, Fl. 348, t. 16. March 27, 1806. Lower Columbia River, above Kalama River, in the vicinity of Deer Island. The plant is not mentioned in the Journal of this date, but was discovered by L. & C. in this vicinity, near the mouth of the Multomah or Willamette, November 4, 1805 ; see my edition, p. 695. Spiraea discolor Pursh, Fl. 342. May 29, 1806. Camp Chopunnish. Philadelphus lewisi Pursh, Fl. 329. May 6, 1806. Main Kooskooskee River, vicinity of Colter's or Potlatch Creek, below mouth of the North Fork. July 4, 1806. " On the waters of Clark's River." This means Hellgate River, between Missoula, Montana, and the mouth of Big Blackfoot River, in Missoula Co., Montana. Ribes aureum Pursh, Fl. 164. July 29, 1805. Three Forks of the Missouri, junction of Jeffer- son, Madison and Gallatin Rivers. Both currants and gooseberries are mentioned at this date, and one species, which Mr. Knowlton identified from the description as R. oxyacanthoides, is described at length ; fruit large, jet black with crimson pulp, extremely acid, etc. But the original mention of R. aureum is earlier in the work, p. 419, July 17, 1805, when L. & C. were at Pine or Half Breed Island and Rapids, a little below the mouth of Dearborn River. 302 PROCEEDINGS OF THE ACADEMY OF [1898. It is here particularly described, along with two other kinds of cur- rants which Mr. Knowlton identified as R. hudsonianum and R. viscosissimum, and two species of gooseberries which he doubtfully referred to R. rotundifolium and R. oxyacanthoides. April 16, 1806. Rock Fort Camp, on the Columbia. Ribes menziesi Pursh, Fl. 372. April 8, 1806. Columbia River, at the place above said for Montia or Claytonia sibirica. Ribes viscosissimum Pursh, Fl. 163. June 16, 1806. " Heights of the Rocky Mountains." This means on the Lo Lo Trail over the Bitter-root Mountains, at the same place that Pachystigma myrsinites was procured. Clarkia pulchella Pursh, Fl. 260, t. 11. June 1, 1806. " Kooskooskee and Clark's River." It is impos- sible for a specimen to have been collected on those two rivers on the same day ; at the date said, L. & C. were in Camp Chopunnish on the Kooskooskee. See Erysimum asperum, above. (Enothera csespitosa Nutt. (Pursh, Fl. 735.) 0. Bcapigera Pursh, Fl. 263. July 17, 1806. " Near the falls of the Missouri " is correct. Lewis that day went from the Great Falls over to Teton or Tansy River. (Enothera heterantha Nutt. June llf, 1806. " Squamash flats." This means the Quamash Flats on Weippe or Oyipe Prairie ; same spot where Geumtriflorum was taken on the 12th. Sedum stenopetalum Pureh, Fl. 324. June 15 and July 1, 1806. On the Lo Lo Trail ; at first date immediately east of the Quamash Flats, at the other date at the mouth of Traveller's Rest Creek in the Bitter-root Valley. Label unly of a supposed Amjelica. September 3, 1805. On Fish Creek, the north fork of Salmon River, in Lemhi Co., Idaho. June 25, 1806. On the Lo Lo Trail in the Bitter-root Mount- ains, on Hungry Creek. Peucedanum ? April 14, 1806. On the Columbia, at or near Sepulcher Rock, which is an aboriginal burying place about 3 miles below Cataract or Klikitat River. 1898.] NATURAL SCIENCES OF PHILADELPHIA. 303 Peucedanum leiocarpum Nutt. Smyrnium nudicaule Pursh, Fl. 196. April 15, 1806. Rock Fort Camp, at The Dalles of the Colum- bia. Peucedanum simplex Nutt. (or /'. triternatum Pursh). May 6, 1806. On the main Kooskooskee River ; same place as the supposed Philadelphus leivisi, above. Peucedanum utriculatum Nutt.? Phellandrium aquatieum Pursh, Fl. 195. June 10. 1806. Near Camp Chopunnish, which L. & C. left that day, travelling north down and nearly parallel with the Kooskoos- kee, past Collins' Creek to the Quaruash Flats. One or another of the foregoing species of Peucedanum is the plant called cows, coivas or cowish, and particularly described at no one of the above dates, but at May 9, 1806, p. 999 of my edition, where I call it P. cous. It appears as " cow-weed " in the McVickar edition of the work. Cymopterus campestris Nutt.? (Mr. Meehan's suggested identification, in a foot- note). April 29, 1806. On the Columbia at the mouth of Wallawalla River. This is the shapelell or shappalell of L. & C. There is no mention of it at this date in the Journal, but the name appears on April 14, 1806, p. 949 of my edition. (Label only). April 25, 1806. On the Columbia, approaching Umatilla River. At date of May 16, 1806, p. 1014 of my edition, is mentioned " a kind of fennel, called by the Shoshonees yearhah, resembling anni- seed." This is supposed to be yamp, Carum gairclneri or a related species. See also p. 552. (Two unidentified Umbellifers). April llf., 15, 1806. Below and at Rock Fort Camp on the Columbia. Cornus canadensis L. June 16, 1806. On the Lo Lo Trail, Collins' Creek to Hungry Creek, with Pachystigma myrsinites, Ribes viscosissimum and Loni- cera ciliosa. Lonicera ciliosa Poir. Gaprifolium ciliosum Pursh, Fl. 160. June 5 and June 16, 1805. Camp Chopunnish and the Lo Lo Trail. This record is quite right ; but in enumerating the same spe- cies among plants of Fort Clatsop, p. 835 of my edition, I under- 304 PROCEEDINGS OF THE ACADEMY OF [1898. stand L. & C. to have been mistaken. While at Quamash Flats, June 10, 1806, L. & C. speak of "the honeysuckle bearing a white berry," which Mr. Knowlton supposed to be Symphoricarpos race- mosus, and so I used the name on p. 1041 of my edition. Lonicera involucrata Banks. September 2, 1805. " On the waters of the Columbia " does not mean the river itself of that name, but its general watershed. On this date L. & C. were on their Fish Creek, which is the north fork of Salmon River, in Lemhi Co., Idaho. July 7, 1806. Sources of Big Blackfoot River, near Lewis and Clark's Pass, in Deer Lodge Co., Montana. Achillea millefolium L. A. tomentosa Pursh, Fl. 563, nee Willd. May 20, 1806. Camp Chopunnish. Aplopappus spinulosus DC. Amellus spinulosis Pursh, Fl. 564. September 15, 180^. On the Missouri, passing mouth of White River, Lyman Co., South Dakota. (What has become of the big H with which the name of this genus ought to begin ? Botanists should not tolerate such a Cock- neyism as "Aplopappus." No one can aspire to grammatical pro- priety without an aspirate.) Aplopappus sp. October — , 1805. L. & C. reached the Columbia itself on the 16th, and were on it the rest of the month; prior to that date in October, 1805, they were on the Kooskooskee and Snake Rivers. Artemisia cana Pursh, Fl. 521. October 1, 1804- In Lookout Bend of the Missouri of L. & C, now called the Little Bend, passing mouth of Big Cheyenne River. October 2, 1801/.. A few miles further up the Missouri — practi- cally the same locality as the last. Artemisia draounculoides Pursh. A. dracunculus Pursh, Fl. 521, nee L. September 15, 180J.. On the Missouri, passing mouth of White River, Lyman Co., South Dakota. Artemisia frigida Willd. Pursh, Fl. 521. September 2, I8O4. On the Missouri at Bonhomme Island, Bon- homme, South Dakota. October 3, 1801/.. On the Missouri, two days above Big Cheyenne River, nearing Little Cheyenne River. 1898.] NATURAL SCIENCES OF PHILADELPHIA. 305 Artemisia longifolia Nutt. A. integrifolia Pursh, Fl. 520. October 1 and 3, 1804-. See preceding species of this genus. L. and C. do not speak of sage brush in their Journal at any of the above dates. On April 14, 1805, when they were on the Missouri between the Little Missouri and present White Earth Rivers, they speak of aromatic plants "resembling the sage, hyssop, wormwood," etc., p. 273 of my edition. Artemisia ludoviciana Nutt. ? April 10, 1806. " Rockford Camp" as given is impossible, as L. & C. were not at Rock Fort Camp till April 15th that year. On the 10th they had reached the head of tide-water of the Colum- bia, vicinity of Beacon Rock, and were drawing their boats up the Cascades from Brant Island. Aster oblongifolius Nutt. September 21, 1804- Big Bend of the Missouri, as correctly stated. Aster oreganus Nutt. October — ,1805. " Lewis River." If on Lewis' River itself the date was October 10— 16th, while L. & C. were descending Snake or Lewis' River from the mouth of the Kooskooskee to the Columbia itself. " Bidens-like." October — , 1805. " Lewis River," as last said. Balsamorrhiza sagittata Nutt. Buphthalmum sagittatum Pursh, Fl. 564. April llf, 1S06. On the Columbia, one day below Rock Fort Camp. July 7, 1806. Lewis and Clark's Pass of the Continental Divide, near head of Big Blackfoot River, in Dear Lodge Co., Montana. Bigelowia graveolens Gray. Chryeocoma dracwncnloid.es Pursh, Fl. 517. May 6, 1806. Main Kooskooskee River, below Camp Chopun- nisb. October 2, 180 4. Just above Little or Lookout Bend of the Mis- souri ; see Artemisia cana above. Bigelowia graveolens albicaulis Gray. Chrysoconia nauseosa Pall, in herb. Pursh, Fl. 517. October 15,1805. "On the Columbia River" as given is not quite right, as that day L. & C. were descending Snake River, and did not reach its confluence with the Columbia till the 16th. 306 PROCEEDINGS OF THE ACADEMY OF [1898. Cnicus edulis Gray. March 13, 1806. Fort Clatsop, as correctly given. Mr. Meehan quotes the Journal of January 20th for this species, though nothing is said of it on that date in the Journal as printed. The passage cited by Mr. Meehan occurs in the general account of the botany of Fort Clatsop, where Cnicus edulis is No. 1 of the list, p. 821 of my edition; " shanatanque " of the natives. But it is quite true that the botanical matter begins in Clark's Codex P, p. 89 of the manu- script, at date of January 20, 1806. Eriopliyllum caespitosum Dougl. Actinella lanata Pursh, Fl. 560. June 6, 1806. Camp Chopunnish. Gaillardia aristata Pursh, Fl. 573. July 7, 1806. As above, under Balsamorrhiza sagittata. Grindelia squarrosa Dunal. JDonia squarrosa Pursh, Fl. 559. August 17, 1801f. Camp near the Omaha village on the Missouri, nearly opposite mouth of Omadi Creek. Gutierrezia euthamiae T. & G. Solidago earoihrce Pursh, Fl. 540. September 19 and 21, ISOlf. (one of these dates misprinted " 1805 "). Approaching and on the Great Bend of the Missouri. Liatris pycnostachya Mchx. September 15, 180^. On the Missouri, passing White River. Liatris scariosa Willd. September 12, 1801f. Three days below White River, passing Shannon's or AVashinanpi Creek, vicinity of Rosebud Landing, Gregory Co., South Dakota. Matricaria discoidea DC. Santolina suaveolens Pursh, Fl. 520. June 9, 1806. Camp Chopunnish. Microseris macrochaeta Gr. April 17, 1806, " Rock " Camp, as here given, is the Rock Fort Camp already often mentioned. Solidago rigida L. September 13, 180J.. Two days below White River, on the Missouri. Composite? May 27, 1806. Camp Chopunnish. Arctostaphylos uva-ursi Spreng. No date. No. 33, Fort Mandan. This fort was occupied Novem- ber, 1804-April, 1805. Mr. Meehan says, in speaking of the name 1898.] NATURAL SCIENCES OF PHILADELPHIA. 307 " sacacommis " used for this plant by " Engages," that it is not clear who "Engages" were; but an engage was any hired man of a fur trading company ; the word means precisely the same as em- ploye or employee. Mr. Meehan states that " Professor Knowlton in the notes to Coues' edition of the travels, suggests the name Arctostaphylos pungens for this." But I cannot find A. pungensin my book. Sacacommis is given in four places, p. 139, p. 674, p. 729, p. 827, in each instance correctly identified as the bear-berry, A. ura-ursi. This is one of the few botanical identifications that I made myself, as I happened to know the plant very well. Arbutus menziesi Pursh, Fl. 282. November 1, 1805. Cascades of the Columbia, a little above head of tide-water. Gaultheria shallon Pursh, Fl. 283. June 20, 1806. " On the coast of the Pacific Ocean," as given, is impossible. At that date L. &. C. were on the Lo Lo Trail in north- ern Idaho. I suppose this date to be a misprint for some day in January, 1806, when L. & C. were at Fort Clatsop, and repeatedly mention the salal, shallun or shellwell with particularity ; see my edition, p. 731, p. 739, p. 791, p. 798, p. 825. The form of the name shallum, adduced by Mr. Meehan, does not occur in my work. Vaccinium myrtillus L. ( V. myrtilloides L. in Mr. Median's footnote.) June 20, 1806. " Fort Clatsop," as given, is impossible ; see under Gaultheria shallon. Vaccinium ovatum Pursh, Fl. 290. June 27, 1806. " Fort Clatsop," as given, is impossible ; see under Gaultheria shallon. While on the question of Vaccinium, I should much like to know what botanists can make of the " cranberry of the low and viny kind" mentioned by L. and C. in the Fort Clatsop list of plants, No. 11, p. 826 of my edition, and considered by Mr. Knowlton to be V. macrocarpon , ibid. Dodecatheon meadia L. April 16, 1806. Rock Fort Camp, on the Columbia. In his footnote Mr. Meehan says : " There might have been a specimen collected on the march up the Missouri in 1804, as in the Journal under date April 17th, it is noted that ' violets, doves foot and cow- 308 PROCEEDINGS OF THE ACADEMY OP [1898. slips are in bloom,' the Dodecatheon being probably referred to as cow- slips." But L. and C. were not on the voyage up the Missouri on April 14, 1804 ; they did not start till May 14, 1804, and at date of April 17, 1804, there is not a word about cowslips in the Journal. What Mr. Meehan means is a passage in the meteorological register kept by L. and C. at Camp Dubois, at the mouth of Wood River, which empties into the Mississippi in Illinois, till the date of their departure. The correct quotation for April 17, 1804, is: "the violet, dove's-foot, and cowslip are in blow," p. 1283 of my edition. Mr. Meehan's other citation of "cowslip," at date of April 9, 1806, also found in the meteorological register, p. 1295 of my edition, is correctly referred to the Columbia River. Frasera thyrsiflora Hook. Swertia fastigiata Pursh, Fl. 101. June lJf., 1806. " Squamash flats," as given, means Quamash flats, on the Lo Lo Trail, west of the Bitter-root Mountains. So also does Pursh's " on the Missouri Flats near the Rocky Mountains," which reads curiously to one who knows the geography of the route. It is wrong by several hundred miles — yet not so far out of the way as some others of his that I could instance. Colloma linearis Nutt. April 17, 1806. " Rockford "=Rock Fort Camp, on the Col- umbia. Gilia aggregata Spreng. Cantua aggregata Pursh, Fl. 147. June 26, 1806. Hungry Creek, as given, is correct ; a small trib- utary of the north fork of the south fork of the Kooskooskee, east of Collins' Creek, in the mountains of the Lo Lo Trail. Pursh's "banks of the Mississippi," as cited in Mr. Meehan's paper, is more than a thousand miles out of the way; and if this be an inadvert- ence for " banks of the Missouri," still it is wrong by several hun- dred miles. Polemonium cseruleum L. June 27, 1806. One day further east than the last, on the Lo Lo Trail over the Bitter-root Mountains. Phacelia oircinata Jacq. P. heterophylla Pursh, Fl. 140. P. scabioscefolia Pursh, MS. (typo). June 9, 1806. Camp Chopunnish, the day before L. and C. left it. Mr. Meehan's footnote is erroneous in citing " on the Kooskoos- kee, August 9, 1806 " — I presume merely by a slip of the pen. On August 9, 1806, L. and C. were on the Missouri below the mouth of the Yellowstone. 1898.] NATURAL SCIENCES OP PHILADELPHIA. 309 Phacelia menziesi Torr. Hydrophylhim lineare Pursh, Fl. 134. April 17, 1806. Rocky— Rock Fort Camp, on the Columbia — not " on the banks of the Missouri," as Pursh has it. Plagiobothrys tenellus Gray. April 17, 1806. As the last. Krynitskia sp. ? April 17, 1806. As the last. Nicotiana quadrivalvis Pursh, Fl. 141. October 12, 180 J,.. " The Ricara's town " said was one of the 3 Arikara villages which were flourishing in 1804 within 8 miles above the mouth of Wetarhoo River of L. and C, now Grand River, South Dakota — one of them on Ashley Island, the other two a little higher up, on the right bank of the Missouri. Pursh says of N. quadrivalvis, " the tobacco prepared from it is excellent." That makes me believe he never smoked the nasty stuff. Mimulus luteus L. Pursh, Fl. 426. July 4, 1806. " On the waters of Clark's River " means Hellgate River, close by Missoula, Montana. • Orthocarpus tenuifolius Benth. Bartsia tenuifolia Pursh, Fl. 429. July 1, 1806. "Valley of Clark's River" means the mouth of Traveller's Rest Creek, the Lou Lou Fork of the Bitter-root River. Pedicularis groenlandica Retz. Pursh, Fl. 426. July 6, 1806. " On the low plains on the heath of Clark's River " means Prairie of the Knobs on Big Blackfoot River. P. scopulorum Gray ? P. elata Pursh, Fl. 425, nee Willd. July 6, 1806. As the last. Nothing is simpler than the geogra- phical explanation of the apparent discrepancies in this identifica- tion and the three preceding ones. The Bitter-root, the Hellgate and the Big Blackfoot are three of the sources of Clark's River, coming together in the vicinity of Missoula. July 1st to 6th Lewis went down the Bitter-root to Missoula, up the Hellgate to the Big Blackfoot, and up the latter to within one day's march of Lewis and Clark's Pass of the Continental Divide. As I have said before, neither Lewis nor Clark ever saw Clark's River as understood by modern geographers. Pentstemon diffusus Dougl. May 20, 1806. Camp Chopunnish. 310 PROCEDINGS OF THE ACADEMY OF [1898. Synthyris reniformis major Hook. June 26, 1806. Hungry Creek, as said. Salvia lanceolata Willd. S. tricJiostemmoirfes Pursh, Fl. 19. September 21, 1804- Big Bend of the Missouri, as said. Scutellaria angustifolia Pursh, Fl. 412. June 5, 1806. Camp Chopunnish. Oxybaphus nyctagineus Sweet. Allionia ovata Pursh, Fl. 97. September 1, 180 4-. At or near Bonbomme Island, South Dakota. Atriplex canescens James. Calligonum canescena Pursh, Fl. 370. September 21, 1804- Big Bend of the Missouri, as said. Atriplex nuttalli Wats. July 20, 1806. " High plains of Missouri " is doubly impossible : there are no high plains in Missouri, and if high plains of the Missouri River be meant, it is wrong ; for at this date Lewis was high up on Maria's River, and Clark was on the Yellowstone. Sarcobatus maculatus Ton-.1 July 20, 1806. As last said. This is the " pulpy leaved thorn " of L. & C, p. 325, p. 462, and p. 463, of my edition, there correctly identified by Mr. Knowlton as S. vermicularis. Polygonum bistortoides Pursh, Fl. 271. June 12, 1806. Quamash flats, as said, but by no means " on the banks of the Missouri," as Pursh says, for there are none such. Among the several Quamash flats described and mapped by L. and C the one where they were on June 12, 1806, is the Weippe or Oyipe Prairie near the west end of the Lo Lo Trail, in Shoshone Co., Idaho. Elaeagnus argentea Pursh, Fl. 114. July 6, 1806. Prairie of the Knobs, on Big Blackfoot River. Shepherdia argentea Nutt. Hippophce argentea Pursh, Fl. 115. A. No. 39, no date. But date is easily supplied, if the specimen was "obtained at the mouth of the River Quicourre ;" for this is a L. and C. way of spelling L'Eau qui Court, French name of Running Water or Niobrara River, where L. and C. camped September 4, 1804; they passed it again September 6, 1806, but that the former date is the one is shown by the fact they speak of sending the speci- 1 Sarcobatus maculatus Torr., in my paper, was a misprint for Sarcobatus vermicularis Torr. (J. M.) 1898.] NATURAL SCIENCES OF PHILADELPHIA. 311 men in a box to Captain Stoddard at St. Louis, and this box started from Fort Mandan April 7, 1805. Euphorbia heterophylla L. E. cyathophora Pursh, Fl. 605, nee Willd. October £, 1804- On the Missouri, above Big Cheyenne River, and nearing Little Cheyenne River. Euphorbia marginata Pursb, FI. 607. July 28, 1806. " On the Yellowstone River, M. Lewis." This is impossible, because Lewis was never on the Yellowstone, though he passed its mouth twice ; and at the date said he was on the Missouri above Maria's River, at the Cracon du Nez or Grog Spring, in the vicinity of Fort Benton. Clark was on the Yellowstone at this date, below the mouth of the Bighorn, and above the mouth of Tongue River. Madura aurantiaoa. (No label.) Betula 1 i. e. Alnus rubra. March 26, 1806. Lower Columbia River, between Puget's Island and Cowlitz River. I am pleased to find Mr. Meehan confirming the identification of the black alder several times mentioned by L. & C. and given in my edition as Alnus rubra, p. 698, p. 724, p. 749, p. 833, p. 911. Quercus garryana Dougl. March 26, 1806. Same place as last said. Quercus macrocarpa depressa Englm. September 5, 1801/.. From the Niobrara River, where L. & C. camped on the 4th (not on the 5th), upward. The " White Point " Creek which Mr. Meehan cites in this connection is the White Paint Creek of L. and C, now known as Bazile Creek, which falls into the Missouri next below the Niobrara and on the same side. The date on which L. and C. described this tree particularly is the 16th, not 15th, as cited by Mr. Meehan ; they were then camped a short dis- tance above White River, one mile above their Corvus Creek, now known as American Crow Creek. This oak is the one malidentified by Mr. Knowlton in my edition, p. 119, as Q. undulatavar.wrighti, and first referred to Q. macrocarpa by Prof. Sargent, Garden and Forest, No. 465, January 20, 1897, p. 28 — a masterly criticism of the way all the L. & C. trees were handled in my work, and one for which I am profoundly grateful to its distinguished author. 312 PROCEEDINGS OF THE ACADEMY OF [1898. Populus monilifera Ait. P. angulata Pursk, Fl. 619, nee Willd. August — ,1806. Somewhere on the Missouri; location not determinable. Populus trichocarpa T. and G. june _ 2806. " Cotton tree of the Columbia." But L. & C. were not on the Columbia in any part of June, 1806, the whole of which month they spent either at Camp Chopunnish or on the Lo Lo Trail iu Idaho. While they were low down on the Columbia they mentioned this species twice, March 25 and 27, 1806 ; see my edition, p. 908 and p. 911, where P. trichocarpa is correctly given. Calypso borealis Salisb. Pursh, Fl. 593. June 16, 1806. Hungry Creek, as said. Iris missouriensis Nutt. I, sibirica Pursh, Fl. 30, nee Wild. July 5, 1806. Prairie of the Knobs, on the Big Blackfoot River. Allium sp. (Perhaps in part A. angulosum Pursh, Fl. 223. It may be A. reticula- tum.) April 30, 1806. Neither of the three botanists concerned in this case seem to know what sort of an onion it is. All I know about it is, that if it was collected at the date said, it was not collected "on the waters of the Kooskooskee," as said ; for on April 30, 1806, L. & C. were on the Wallawalla in the vicinity of Touchet River. Brodiaea douglasi Wats. B. grandifiora Pursh, Fl. 223, nee Smith. April 20, 1806. Great Falls of the Columbia, near Celilo. Mr. Meehan speaks of this as the " hyacinth of Colorado Plains," by slip of the pen for Columbia Plains. The passage of L. & C. which he cites as from the Journal of April 16th, occurs in the meteoro- logical register of that date, p. 1295 of my edition. Mr. Knowlton imagined this hyacinth, as mentioned by L. & C. on April 16th, to be quamash, and so it stands Camassia esculenta on p. 952 of my edition, by egregious error. Calochortus elegans Pursh, Fl. 240. May 17, 1806. Camp Chopunnish. Camassia esculenta Lindl. Phalangium quamash Pursh, Fl. 226. June 23, 1806. Quamash flats on the Lo Lo Trail. Pursh is far out with his " upper part of the Missouri " as the location of this specimen. In citing the Journal of June 29, 1806, for the blooming of this species, Mr. Meehan means the meteorological register of that date, p. 1297 of my edition. It should be particularly noted 1898.] NATURAL SCIENCES OP PHILADELPHIA. 313 that the Quamash flats of L. & C. of June 29th are not those of June 23d. The latter are on Weippe Prairie, near the west end of the Lo Lo Trail; the former are near the east end of that trail, on Quamash or Glade Creek, also called Prairie and Takon Creek. Both are in Idaho, but over 100 miles apart. I do not understand why Mr. Meehan, or Messrs. Robinson and Greenman, should use Camassia eseulenta as the technical name of this plant. The first specific name being quamash Pursh, 1814, and the first tenable generic name being Quamasia Rafinesque, February, 1818, the coupling of these as Quamasia quamash is the required name of the plant, as first given by Mr. Coville, Pr, Biol. Soc. Wash. XI, April 21, 1897, p. 64. Erythronium grandiflorum Pursh, F1.231. June 5, 1806. Camp Chopunuish. Erythronium grandiflorum parviflorum Wats. May 8, 1S06. Kooskooskee River, below Camp Chopunnish, near mouth of the north fork of the river. Fritillaria lanceolata Pursh, Fl. 230. April 10, 1806. Brant Island in the Columbia, at foot of the Cascades, near head of tide water. Fritillaria pudica Spreng. Lilium f pudicum Pursh, Fl. 228, t. 8. May 8, 1806. Kooskooskee River, below Camp Chopunnish. Trillium ovatum Pursh, Fl. 245. April 10, 1806. Same place as Fritillaria lanceolata. Trillium petiolatum Pursh. Fl. 244. June 15, 1806. On the Lo Lo Trail, on or near Collins' Creek. Veratrum viride Ait. or V. californicum Dur. June 25, 1806. On the Lo Lo Trail, on or near Hungry Creek. Xerophyllum tenax Nutt. Helonias tenax Pursh, Fl. 243. June 15, 1806. Same place as Trillium petiolatum. Zygadenus elegans Pursh, Fl. 241. July 7, 1806. Head of Cokalahishkit or Big Blackfoot River, near Lewis and Clark's Pass. Aira brevifolia Pursh, Fl. 76 (or Poa tenui/olia Nutt.). June 10, 1806. At or near Camp Chopunnish, which L. & C. left this day. 21 314 PROCEEDINGS OF THE ACADEMY OF [1898. Hordeum jubatum Pursh, Fl. 89. March 13, 1806. Fort Clatsop. July 12, 1806. White Bear Islands of L. & C, still so called, in the Missouri near mouth of Sun River, above the Great Falls, adjoining city of Great Falls, Cascade Co., Montana. Festuca ovina L. var. June 10, 1806. See under Aira brevifolia. Agropyron divergens Nees. Festuca spicata Pursh, Fl. 83. June 10, 1806. As last. Koeleria cristata Pers. Pursh, Fl. 85. June 10, 1806. As last. All the grasses of this date reported as from " Plains of the Columbia," where none of them were col- lected. Stipa spartea Trin. S.juncea Pursh, Fl. 72, nee L. (S. comata Trin., fide Scribner). July 8, 1806. East base of Continental Divide, in Lewis and Clark Co., Montana, about headwaters of north fork of Dearborn River and of Sun River. Zizania aquatica L. No. 59. September 8th, year not said. If 1804, on the Missouri near Fort Randall, South Dakota. If 1 805, in the Bitter-root Valley, Montana. If 1806, on the lower Missouri between the Council Bluff and the mouth of the Platte. Spartina gracilis Trin. ? (No label.) Pinus ponderosa Dougl. October 1, 1805. In Canoe Camp, on the main Kooskooskee, at the mouth of its north fork, or Chopunnish River of L. & C. Juniperus communis L. October 17, 1801/.. On the Missouri, a little below Cannonball River — same place as Psoralea argophylla. Juniperus ocoidentalis Hook. J. excelsa Pursh, Fl. 647. October 2, 1801^. In the Little or Lookout Bend of the Missouri, at or near mouth of Big Cheyenne River. Juniperus sahina procumbens Pursh, Fl. 647. October 16, 1801/. On the Missouri at or near Fort Yates, North Dakota. This is far from being " within the Rocky Mountains," Pursh. 1898.] NATURAL SCIENCES OF PHILADELPHIA. 315 Equisetum arvense L. August 10, 1801/. On the Missouri, above Little Sioux and below Big Sioux River ; Monona Co., Iowa, on the right hand going up ; Burt and Blackbird Counties, Nebraska, on the left. Aspidium spinulosum Sw. June 20, 1806. " Fort Clatsop ; " but date impossible, as L. & 0. were on the Lo Lo Trail in Idaho at this date. Probably " June " is here in error for January. Lomaria spicant Desv. Blechnum boreale Pursh, Fl. 669, nee Willd. June 20, 1806. " Fort Clatsop ; " impossible ; see last. Hypnum oreganum Sull. June 20, 1806. " Fort Clatsop ;" impossible ; see Aspidium spinulosum. Bazzania trilobata (L.). S. F. Gray. July 1, 1806. Mouth of Traveller's Rest Creek, or Lou Lou Fork of Bitter-Root River. Egregia menziesi (Turn.) Aresch. (Phyllospora menziesi.) November 17, 1805. Mouth of the Columbia River. Sorbus microcarpa Pursh. September J/., 1805, and June 27, 1806. Two different specimens, as well as dates, may be in question. In any event, on September 4, 1805, L. & C. passed over the Bitter-root range from Idaho into Montana, from Fish Creek, the north fork of Salmon River, to Ross' Hole, near the head of the east fork of the Bitter-root River; and on June 27, 1806, they were on the Lo Lo Trail, in the Bitter-root Mountains, nearing its east end, about to pass from Idaho into Mon- tana, but at a place 100 miles or more distant from the other. The two situations, however, I should suppose to be practically identical, from a botanical standpoint. (Label only.) April 11/., 1806. On the Columbia, one day below Rock Fort Camp. Phlox speciosa Pursh, Fl. 149. May 7, 1806. Not " on the Plains of the Columbia," as said, but on the main Kooskooskee River, below Camp Chopunnish. 316 PROCEEDINGS OF THE ACADEMY OF [1898. LIST OF BATS COLLECTED BY DR. W. L. ABBOTT IN SIAM. BY GERRIT S. MILLER, JR. During the year 1896, Dr.'W. L. Abbott made an extensive col- lection of mammals in the State of Trong, Lower Siam, a region whose fauna has hitherto been practically unknown. The collection, which Dr. Abbott has presented to the United States National Mu- seum, includes sixty-one bats, all but six of which were sent to Washington in formalin. Eleven species are represented. Three of these prove to be new, while several others are of special interest. Considerable time must elapse before it will be possible to prepare a complete account of Dr. Abbott's Malayan collections. Meanwhile it seems advisable to publish a list of the bats that he has thus far taken, and the following is printed here by permission of the Secretary of the Smithsonian Institution. Pteropus medius Temminck. One skin (9 young adult, No. 83,277) taken on April 15, 1896 I refer with some hesitation to this species. Its measurements are as follows : head and body, 260 j1 expanse of wings, 1,296 j1 forearm, 175 ; thumb (with claw), 75 ; second finger, 127 ; third finger, 315 ; fourth finger, 246 ; fifth finger, 230 ; tibia, 85 ; foot (with claws), 55 ; ear from meatus, 39 ; ear from crown, 37 ; width of ear, 22 ; skull : basal length, 167 ; basilar length (Hensel), 164 ; palatal length, 39 ; palatal width (anterior end of first molar), 13.4 ; zygomatic breadth, 36; breadth across postorbital processes,28; length of nasals, 20; great- est breadth of nasals, 6 ; maxillary tooth row (exclusive of canine), 20 ; crown of first molar, 6.6x4 ; canine at level of cingulum, 4x3.2 ; greatest length of mandible, 56 ; depth of nrandible at anterior base of first molar, 6.6 ; depth of mandible through angular and coronoid processes, 24 ; mandibular tooth row (exclusive of incisors and ca- nine) 27 ; crown of first lower molar, 6x3.4 ; lower canine at level of cingulum, 2.8x3. Cynopterus angulatus sp. nov. Type. — Adult $ (in alcohol), No. 83,569, United States National Museum, Trong, Lower Siam, collected in 1896 by Dr. W. L. Abbott. 1 From fresh specimen by collector. 1898.] NATURAL SCIENCES OF PHILADELPHIA. 317 General characters. — Size medium (forearm 60-70) ; tail well- developed ; incisors | ; ear conspicuously rimmed with white ; poste- rior border of ear conch with well-developed angular projection im- mediately above base ; general color dull rufous. Ears. — Ears about double length of muzzle; laid forward they reach to anterior corner of eye. General form of ear as in Cynoj)' terus brachysoma (see Dobson, Monograph of the Asiatic Chiroptera, p. 28), but projection at base of outer margin sharply angled instead of bluntly rounded. Tip of conch rather narrowly rounded off. A slight, though distinct, concavity in posterior border immediately below tip. Rim of ear with a conspicuous whitish border, about 1.5 mm. wide near base and narrowing to a mere trace at tip, but never- theless continuous. Area occupied by white border on anterior mar- gin distinctly thickened. Inner surface of ear conch with six in- distinct cross ridges. Basal third of ear furred externally, the remainder naked inside and out except for a few hairs along ante- rior margin. Membranes. — Membranes thick and leathery, broad and ample. Interfemoral membrane deeply emarginate, only 6 mm. wide in middle. Wings from sides of back and middle of outer toe. Fur and color. — Throughout the body the fur is short and scant, that on the middle of back only 6 mm. in length. In males it is dis- tinctly longer on sides of neck (10 mm. in type), and in both sexes it is much shorter on throat and on sides of body (this especially noticeable in females). The fur of the body extends to middle of forearm, both above and below, but does not reach the membranes except in middle of uropatagium. Propatagium thinly haired below through proximal half. Wings with scattered hairs below along sides of body and behind forearm. General color of two males (skins) burnt umber, to a varying ex- tent tinged with red and overlaid with olivaceus, darker on crown of head and paler along middle of belly. A female is paler through- out, the general color more closely approaching the chestnut and russet of Ridgway. Ears and membranes of dry specimens black- ish, the former edged with dirty yellowish-white. Metacarpals and phalanges of fingers varied with whitish, which irregularly involves the membrane close to the bone. Skull. — The skull is strongly built and moderately angular. Old individuals show a tendency to form a sagittal crest. Face line slightly concave immediately behind tip of rostrum, then nearly 318 PROCEEDINGS OF THE ACADEMY OF [1898. straight to highest point about over middle of brain case. Frontal region with a broad longitudinal groove running from between post- orbital processes to within about 3 mm. of tip of rostrum. Post- orbital processes well-developed, about 4 mm. long. Extent of bony- palate behind molars equal to distance between second premolars. Teeth. — Upper incisors in pairs, the outer tooth slightly smaller than the inner. First upper premolar about as large as inner in- cisor, occupying less than half the space between canine and second premolar. Crowns of second and third premolars about equal when viewed from above, the first much the larger when viewed from the side. Molar about equal to third premolar, but with slightly narrower crown. Outer lower incisors distinctly larger than inner, the incisor row slightly bowed outward. First lower premolar more than double as large as first upper premolar, and like it occu- pying the middle of the space between the canine and second pre- molar. Crowns of second and third premolars and first molar sub- equal when viewed from above, but regularly graded in height from before backward when viewed from the side. Second lower molar about one-third as large as first and equal to first premolar. TABLE OF MEASUREMENTS OF CYNOPTERUS ANGULATUS. Number Sex Total length Tail Tibia Foot Calcar Forearm Thumb Second finger Third finger Fourth finger Fifth finger Ear from meatus Ear from crown Width of ear Skull: Basal length Basilar length of Hensel Greatest length Zygomatic breadtb Width across postorbital processes Width immediately behind postorbital processes Length of palate Breadth of palate at anterior border of molar Upper tooth row exclusive of incisors Length of mandible Depth of mandible at anterior border of second premolar Depth of mandible through angular and coronoid processes Lower tooth row 83524 83569* 83572 83592 83593 84441 d c? 9 9 9 9 97 110 114 123 118 8 9 11 10 9 24 24.6 24 29 28 26 13 15 14.6 16 16 14 7 6 6.4 7 7 7 61 66 70 71 68 65 23 26 26 29 28 26 47 45 4S 49 50 45 111 110 118 120 115 88 84 91 93 91 87 83 89 89 88 18.4 18 20 21 21 15 17 17 18 18 12 13 14 14 14 29 24.4 32 21 11.8 7 14 7 10 24 3 13 12 28 25 31.4 21 11.4 6.6 14 6.6 10.4 25 3 13 12 84491 25 14 7 65 27 24 29 19 12 6.4 13 6.4 10 22.6 2.8 11.8 11 *Type. 1898.] NATURAL SCIENCES OF PHILADELPHIA. 319 General remarks. — Cynopterus angulatus bears a strong resem- blance to C. marginatum, but is readily distinguishable by its consid- erably smaller size and by the form of the ear. It is larger than C. brachysoma, the only other known species with similarly formed ear, and quite different in color. This bat is represented in Dr. Abbott's collection by two skeletons, three skins with skulls, and six specimens in formalin. Khinolophus trifoliatus Teinnrinck. Four specimens in formalin. For measurements see table. Rhinolophus affinis Horsfield. Four specimens in formalin. TABLE OF MEASUREMENTS OF RHINOLOPHUS TRIFOLIATUS AND R. AFFINIS. Number Sex Total length Tail Tibia Foot Calcar Forearm Thumb Second finger Third finger Fourth finger Fifth finger Ear from meatus Ear from crown Width of ear (exclusive of antitragus) Length of nose leaf from lip Greatest width of nose leaf R. trifoliatus. R. affinis. 83525 d 96 38 26 11 16.4 53 7 38 87 71 74 26.4 22 19 19 12 83537 9 104 38 25 12 12 53 8.4 37 90 71 78 27 23 18 20 12 83573 83538 9 9 100 85 35 23 25 24 12.4 10 14 7 53 51 8 8.6 38 40 90 77 73 61 77 63 29 20 24 17 18 16.6 21 16 12 9 83540 9 87 25 24 10 7 50 7.6 41 74 64 65 22 18 16 15 9 83571 5; s «u <*) fel bq 57 3727* 12.7 10.4 15 18 11.4 16.4 6.4 11 35.6 40 41 5.1 7 34 67 47 46 11 7 4.6 4.4 2.4 E. peninsularis. 83574 83579 83556 83575* 83576 83577 9 ? cf . i i .• u: u_ lus (b) left ear re- mooPs> may indicate a closer relationship be- moved. (Slightly en- tween the two groups than has heretofore been larged). suspected. 1898.] NATURAL SCIENCES OF PHILADELPHIA. 327 •snS'BJX COt^K CC — T)> Tf to TT f «3 f O SO to eo ^ T* ' Tf Tf TT Tf 1 Tf ^ lO -^f ' Tf \ Tf 1 Tji -^ Tp Tfl -f i" Tf" »t Tj* 1*1* -* ' ^ ^* "*t 1 CO 00 CO Tf< Tf ** f GO •njiojo toojj JB3 - -- h h m n h m h oi w' :i ^' r> h h h m c-i cm CM CM lH cm r-« ^ CO "* CM to "# CO ^ GO •snjBam raojj JB3 ^CCCOCM^^^cO^Tt-^CO^^Tf^^COCO'-J'-t'eMCCCOCO •jaSng qjjt^ CO CO ^^ ^^ ^f ^^ ^* ^^ ^* ^^ ^f* ^J* ^^ ^* ^^ ^* ^* *"t* ^"t* *"^ ^^ ^* ^J* ^* ^* ^^ ^^ uaSag q^ino j eo oo oo tj *-"■ eg io lo ic to cj ^h ^r ci -f »o rt* -^ io -t ut> -^ -^ io ic -^ •J9Sag p.itqx CO WMf ^h-OHOONaoOXftOOOO^OHOHHai O C t3 (5 C O WO O O C O O 1ft tD O tO O IC CO O www»cort«eo«wwwwww»w«w«weo«MM CO "* i-4 00 00 3S •qranqx ^ "Tf M* ^* *3* ^* CO ^ ^ CC ^f ^* ^ *Ct* ^f ^ ""J* *"# "^* "tf* "Ct* ^ ^ ^1* rQ CO O -* Tt^ Tt* "* Tf "^ "•* •rajBajoj Tj* CM Tf CO* ^h CM CO CM CO* CM r* CM* CM CM CM CO CO* CO CO CM* CM* CM CO CO CM* COCOCOCOCOCOCOCOCOCOCOCOCOCOCOCOcriCOCOCOCOCOCOCOCO CO -^ TT CO co ^ -"c^ r- •^ooj t^h-t^t^t^t^OQWOCOCOt^Ot-t^h-^'O'ONt^t-tOtO ■^00 CO ^ CO "BWTX 00 c to* t^ IO WW 1ft lO iO W CO «5 w o in lO C CO JO ift »o to IO •ajjqajjaA ii"X .— 1 i>,fi>-cD"tiftXXW'#incDt~-wco'Ococs-oor-oococi'd •qjgna[ i^ox CM ON'fN^'Ot^r^MH'^h.^X'OlOtOlONWb'OMXlft cccccccGcoxooccoooocccccocococococococoooaicoaoao ■»>s CH-*b*b *^^^^^^d^^^^dO+o^<>k>k>k>k>c>k>kh- COfH.*0'*W(MWM<^WOi-i^coOX0 05WM o cm cm cm cm :t re -r W LC"-"-« ^- cm co co -r -r w w •jaqmn^ cc^oo oo oo xxxxxxxxxxxxxxxx w w w*"w iftiftia in w uo w"w*"w w"w w*"w w"w w ojo^ojc^oJcJo^c^o^oo^ocJc^o^aJopc^aiaJa" oooociuouuoooayyoyocjoy , , ca — sccccc-c — — ^^c-ccz^^c^aa ^ -»d c3c3e3c3C^a^a)QQa;a;a;i;a>Qaj 1 t» cj CS^t^t^t^I^t^^t^t^t^c^C^t^t^E^t^C^t^^C^C- fc — ^aaaaassasaaaassssaass «o<^«>)«-)R«SRs;a:s:«s:=:s:RRa:s:s««a:Ks; saaa««cj«ij«Q««?jQtsts(j!iQQ«tsQ3 ^^■c^ <<. ct=:=;5;s:§5;5:5:^^5:cj5:5:5;^^^^s' bbbfe^^^^^^^^^^^ss^sssssss •ii-i:'i:,'i:cu'ij^'^c\)^iv^)^>'\»,ii'ii\)%j^^i\j'**^i^j^i CrSS^V^^^^^^^^^W^kkkk^^k^V -<^ < fe - fe ^ ^ > ^ fe > < fe ^ ^ ^ > % ^ * < 328 PROCEEDINGS OF THE ACADEMY OF [1898. Natalus (Chilonatalus) brevimanus sp. nov. Natalus micropus J. A. Allen, Bull. Am. Mus. Nat. Hist., Ill, p. 169, No- vember, 14, 1890. Type.— Adult S (in alcohol), No. 15.835, United States National Museum, Old Providence Island, Caribbean Sea. Presented by Chas. B. Cory. Specific characters. — Slightly smaller than Natalus micropus Dob- son1 from Jamaica and with relatively longer ears and shorter fingers. Color apparently paler than in N. micropus. General remarks. — Dr. J. A. Allen recorded the occurrence of this bat on the island of Old Providence as long ago as 1890, but with only a single individual at hand, he naturally considered it the same as the Jamaican species. On comparing fifty-seven specimens from Old Providence with three from Jamaica, I find a slight but re- markably constant difference. Taking into consideration the per- fect isolation of the two forms it seems best to apply to them bi- nomial names. The characters are well brought out in the following table of measurements. The apparent lighter color of N. brevimanus may be due to the bleaching effect of alcohol, as I have seen no skins, and both lots of specimens have been preserved for an unknown length of time. Micronycteris microtis sp. nov. Type.— Adult $ (skin and skull) No. if f f f , United States Na- tional Museum. Collected at Greytown, Nicaragua, by Dr. L. F. H. Birt. Specific characters. — Smaller than Micronycteris minutus (Gervais); thumb, foot, calcar and membranes as in M. megalotis Gray ; ear from meatus about half as long as forearm ; middle lower premolar relatively larger than in M. megalotis ; general color wood-brown, scarcely paler on ventral surface. Fur and color. — The fur is distributed precisely as in M. megalo- tis, except that there is a slightly more extensive sprinkling of hairs on the dorsal surface of forearm. Fur on middle of back about 10 mm. in length. Color uniform wood-brown, slightly richer on dorsal surface. Hairs on body both dorsally and ventrally, nearly white through basal third. Ears. — Ears densely furred on basal half externally, the fur run- ning up along anterior border to within 5 mm. of tip. Distal half 1 Proc. Zool. Soc. Lond., 1880, p. 443. 1898.] NATURAL SCIENCES OF PHILADELPHIA. 329 bare, with a few very fine scattered hairs. In form the ears are much like those of M. megalotis. Their tips, however, are more abruptly narrowed, a condition made still more apparent by their much smaller size. Inner surface of auricle with eight sharply de- fined cross ridges arising at posterior border and extending about halfway across ear. The distance between the uppermost and lower- most ridge is about 5 mm. Feet. — Foot distinctly shorter than calcar and slightly more than half as long as tibia. Skull. — In the type the brain case is more elevated immediately behind the orbits, and the zygomata are less flaring than in the skulls of 31. megalotis with which I have compared it, but these differences may prove to be individual. Teeth. — When viewed from above, the crowns of the three lower premolars appear to be of approximately equal size, though the second is slightly smaller than either of the others. In 31. mega- lotis the crown of the middle lower premolar is very conspicuously smaller than the first. In other respects the teeth of the two species appear to be identical. General remarks. — Micronyeteris microtis is so different from the other described species of the genus that it needs no special com- parison with any. From 31. megalotis its nearest geographical ally, its small ears and uniform wood brown color separate it at a glance. Yet it is probably most closely related to 31. megalotis and 31. hir- suta, since 31. behnii and 31. minuta, the only other known species, are distinguished by differences in the proportions of the parts of the fingers and feet, to say nothing of the peculiar attachment of the wings in 31. minuta. In the type of 3Iicro?iycteris microtis the exact form of the nose leaf cannot be determined. The free, upright portion of the leaf, however, appears to be shorter and broader than in either of the races of 31. megalotis. The whole leaf is finely pubescent. The striation of the inner side of the ear is very different in 3Iicro- nycteris microtis and 31. megalotis. In the latter, instead of eight sharply defined ridges crowded into the space of 5 mm., there are thirteen ill defined stria? with a distance of nearly 10 mm. between the first and last. Micronyeteris megalotis mexicanus subsp. nov. Type. — Adult 9 (in alcohol) No. 52,105, United States National Museum (Biological Survey collection). Collected at Plantinar, 22 330 PROCEEDINGS OF THE ACADEMY OF [1898. Jalisco, Mexico, April 4, 1892, by E. W. Nelson. Original num- ber 2,389. Subspecific characters. — About the size of typical Micronycteris megalotis Gray, but with longer middle finger and apparently lighter color. General remarks. — While the Mexican material at hand is fairly satisfactory, lacking only skins for the accurate determination of color characters, the South American series is very deficient. Yet the nine specimens that I refer to true megalotis agree very closely among themselves, and differ fairly constantly from the Mexican form. The color appears to be paler in the Mexican specimens, but as all are preserved in alcohol no special weight can be attached to this fact. The real characters of the two forms are shown in the accom- panying table of measurements. Dobson's key to the species of Micronycteris (== ' Schizostoma ') rearranged and extended to include the two new forms just described is as follows : First phalanx of middle finger conspicuously shorter than second ; forearm 47 M. behnii (Peters). First phalanx of middle finger approximately equal to second ; forearm 30-40. Wings from tibise ; metacarpal of thumb about equal to remain- ing parts ; calcar shorter than foot . . M. minuta (Gervais). Wings from tarsus or metatarsus ; metacarpal of thumb much longer than remaining parts ; calcar longer than foot. Legs and forearms conspicuously hairy. M. hirsuta (Peters). Legs and forearms essentially bare. Ear from meatus about one-half forearm M. microtis Miller. Ear from meatus about two-thirds forearm. Longest finger 60-64 . M. megalotis megalotis Gray. Longest finger 68-72 . M. megalotis mexicanus Miller. Glossophaga longirostris sp. now Type. — Adult 9 (skin and skull) No. 8,046, Bangs collection, Santa Marta Mountains (near Santa Marta), Colombia, February 10, 1898. Collected by W. W. Brown, Jr. Original number, 60. Specific characters. — Much larger than any species hitherto de- scribed ; skull large and greatly elongated, color darker than in either phase of G. soricina. 1898.] NATURAL SCIENCES OF PHILADELPHIA. 'jBB[asou.joimuAY cm -r co co cc « TfTP ■ — — — -* -T* Tj< Tf T* TT TT ^" TT TT "JU8[ asoa jo ^qSjajj x — — cc cc i" cc cc cc iccc so't- cc i— so "r- t--"t- MeajoqipTAV -«■-- i 13 ! cc -f - -r i: - i.: t t io io u- -c -r -r » I 1 t*CC CN rj« r-" cc lc cc cc t^ t- r- co cc i-- (^ co — t- v: t— snjcacn inoaj jBg i— CM CN CN 1 | cm cc 1 cm CN CC Tf_ T}- CC Tf Tt CM CN CN CN CN co r- co co «o co i> i> co t*» r-- 1> r- c: CO •qranqx CO 00 0)000)00)09 CC 5C CO rf ci CD x o x c*. r. O O O X C5 X CJ c c CM ' tUJEBJOJ Tf CO CO ~4 cm cc cc *# 'Cc -r 1 CC CC cc cc cc cc cc 1 < c> ^~zr > Pm> ~r > m> ^f^=32 ; zygomatic arches incomplete (as in Hemiderma) ; floor of brain-case from basisphenoid forward ele- vated out of its usual position, so that the roof of the posterior nares is formed by two longitudinal folds, given off by the pterygoids and nearly meeting in the median line in the region usually occupied by the basisphenoid and presphenoid (figures 3 and 4) ; calcar ab- 'sent ; nostrils perforating a disc shaped elevation which lacks a true "leaf" or free, pointed process above (the conditions are exactly reproduced in Brachyphylla) ; ears small and separate ; tongue broader than in Phyllonycteris and more abruptly narrowed at tip, the papillae short and stiff; tail about as long as femur. General remarks. — Reithronycteris is a very aberrant member of the subfamily Glossophagince. Its broad teeth, heavy rostrum, mas- sive lower jaw and broad tougue with short papillae remove it widely from extreme forms such as Chceronycteris and Lichonycteris. In its reduced nose leaf and in the form of the mandible and of the mandibular teeth it resembles Brachyphylla. Whether these char- acters indicate any real affinities with the Stenodermata is, however, very questionable.6 In addition to these less important characters, Reithronycteris differs from all other bats with which I am ac- quainted in the structure of the interpterygoid region. Measurements in parenthesis are those of an adult female, Glossophaga sori- cina. from Cuernavaco, Morelos, Mexico (No. 36,017, TJ. S. Nat. Mus.), 6 Since this paper has been in type I have received the late Dr. Harrison Allen's monograph of the Glossophagina? (Trans. Am. Philos. Soc. , N. S., XIX, pt. II, pp. 237-266, June, 1898). Here Brachyphylla is united with Phyllonycteris to form the group ' Brachyphyllina,' placed at that end of the glossophagine series nearest the Stenodermatinse. 334 PROCEEDINGS OF THE ACADEMY OF [1898. Reithronycteris aphylla sp. nov. Type. — Adult $ (in alcohol) No. 9, Museum of the Institute of Jamaica. Collected in Jamaica. No further history. Specific characters. — External appearance much as in Phyllonyc- teris sezekorni Peters,7 but muzzle conspicuously broader and termi- nating in a disc-shaped rudimentary nose leaf like that of Brachy- phylla cavemarum. Feet relatively larger thau in Phyllonycteris sezekorni, and interfemoral membrane much less developed. Skull broader and more heavily built than that of P. sezekorni aud lack- ing the slender, but complete zygomatic arches often present in the latter.8 Teeth conspicuously shorter and broader than in Phyllo- nycteris sezekorni; front lower molar very slightly larger than suc- ceeding ones, not greatly elongated as in P. sezekorni. Color, of specimen preserved in alcohol for an unknown period, light yellow- ish brown. Fur and color. — The fur is short, about 6 mm. in length on mid- dle of back, 4 mm. on belly ; it is very closely confined to the body, barelv reaching the membranes. Color both above and below light yellowish brown. Ears and membranes light brown. Ears. — The ears are short; when laid forward they reach just beyond inner canthus of eye. Anterior border strongly convex from base to a little above middle, then nearly straight to narrowly rounded off tip. Posterior border slightly concave below tip, then convex (the curve about the same as that of anterior border) to base. Posteriorbase in line with upper lip, the distance from cornerof mouth a little less than from the latter point to chin. A wart (concealed by the hair) about as large as eye midway between corner of mouth and posterior base of ear. Inner surface of ear with seven ill de- fined cross ridges. Tragus a little less than half height of ear. Anterior border gently and evenly convex from base to acicular tip. Posterior bor- der with four deep scallops, subtending as many prominent tooth like projections, of which the basal is less developed than the others (it does not show in the view from which figure was taken). Feet. — Foot very large, fully three-fourths as long as tibia, the toes deeply cleft and provided with large claws. No trace of calcar. 7 This comparison is made with specimens from Nassau, Bahamas. These may prove to be different from the typical Cuban form. 5Dobson, basing his description on Jamaican material, states that in Pliyllo- nycteris the zygomatic arches are incomplete. This is not true of the Baha- man specimens. There is little reason, however, to believe that the Jamai- can Phyllonycteris with pointed nose leaf is the same as that found in the Bahamas, and no certainty that either is true sezekorni. 1898.] NATURAL SCIENCES OF PHILADELPHIA. 335 Membranes. — Wings full and ample, at- tached at middle of tibia. Uropatagium reduced to a narrow frill scarcely wider than the fleshy part of the thigh, and reach- ing not quite to middle of tibia. Tail in- cluded to middle in membrane. Tongue. — The tongue (figure 5) while distinctly of the glossophagine type is con- siderably broader in proportion to its length than in any of the other members of the group that I have examined. At the tip it narrows very abruptly to an unusually acute point. The terminal area of elonga- ted stiff papillse has much the same general shape as in Phyllonycteris sezekorni, allow- ance being made for the difference arising from the greater breadth of the tongue, but Fig. 2.— Head of Phyllo- the individual papillae are shorter and of tSXgFi&X °">re ™ifo™ ta-gth. » that the media,, (b). (Slightly enlarged), groove is less conspicuous (this difference is very difficult to represent in the drawing). Skull. — The skull (figure 3) is larger and more massively built than that of Phyllonycteris or any other glassophagine ge- nus with which I am acquaint- ed. The rostrum is especially broad and deep. Face line straight from nostril to middle of brain case ; a well develop- ed sagittal crest and lambdoid crest ; bony palate behind molars narrower than in Phyl- lonycteris sezekorni. The ham- ular processes are very broad and strongly concave intern- ally, the resulting form quite different from that in Phyllo- nycteris or Glossophaga. The structure of the floor of the brain case has already been referred to. Unfortunately Fig. 3. — Skull of Reithronyeteris aphylla. (About 1J times natural size). 336 PROCEEDINGS OF THE ACADEMY OF [1898. the type is so old that it is impossible to trace the sutures in this part of the skull, but the longitudinal folds forming the roof of the posterior nares are apparently given off by the pterygoids. In fig- ure 4 is shown a diagrammatic cross section «* just in front of the hamulars. //^ Mandible very heavy and massive, especially * c S/t* in the region of the symphysis. It is quite un- „. . _.. B j i j n Yig. 4. — Diagram- like that of any other member of the Glossopha- matic cross section qince, and closely resembles that of Brachy- through ptery- ■L 77 11 U ■ J * L S°ldS and fl°0r °f pny I la, allowance being made for its much brain case at re- smaller size. g'l0n marked a-b Teeth. — In number and arrangement the ry<*oTd, b.sp.==b&- teeth agree with those of Phyllonycteris sezekorni, sisphenoid. but in form they are even less typically glossophagine, than is espe- cially the case with the mandibular teeth, which strongly resemble those of Brachyphylla cavemarum. In relative size the teeth agree with those of Phyllonycteris sezekorni except that the front upper premolar is larger, the second upper premolar smaller, and the front lower molar much shorter. The lower premolars are less crowded than in P. sezekorni. Measurements. — Total length, 88 ; head, 28 ; greatest breadth of muzzle in front of eyes, 10; eye to eye, 8; eye to tip of muzzle, 10.4 ; ear from meatus, 16 ; ear from crown, 13 ; width of ear, 12 ; tragus, 8 ; tail, 12 ; free part of tail, 6 ; tibia, 22.8 ; foot, 17 ; claws, 5 ; width of uropatagium at middle of femur, 6 ; forearm, 48 ; thumb, 14; second finger, 37 ; third finger, 84 ; fourth finger, 66; fifth finger, 64; penis, 10. Skull: greatest length, 26; basilar length, 20 ; interorbital breadth, 5.4 ; mastoid breadth, 12.4 ; depth of brain case, 9 ; depth of rostrum at anterior end of first molar, 6 : width of palate between last molars, 5 ; last molar to tip of hamu- lar, 7.8 ; upper tooth row exclusive of incisors, 8 ; greatest length of mandible, 16.6 ; depth of mandible at space between premolars, 3 ; lower tooth row exclusive of incisors, 9. General remarks. — Reithronycteris aphylla needs close comparison with only one described species, the Phyllonycteris poeyi of Gund- lach.8 This bat, from the " Kaffeepflanzung Fuudator," Cuba, is still wholly unknown except for the rather meagre original des- cription. In size, color, general structure of the nose leaf, and absence of calcar, it agrees very closely with Reithronycteris 8 Monatsber. K. Akad. Wissensch., Berlin, 1860, p. 817. 1898.] NATURAL SCIENCES OF PHILADELPHIA. 337 aphylla, but the ear is longer and narrower (18.5x11 instead of 16x12), the rudimentary nose leaf quite differ- ent in form (5.75x4. 5 instead of 4x6), the tail is shorter, especially in its free portion, and the forearm and fingers are slightly shorter. These differences coupled with the seeming impossibility Fig. 5. — Tip of tongue (dorsal that anyone should consider animals surface) of Reithronycteris so widely different in aspect as Phyl- aphylla (a) and Phyllonycteris , ,. , • j t-» -,7 , • sezekorni (b). (About 5 times lonycteris sezekorni and Keithronycteris natural size). aphylla as possibly individual varia- tions of one and the same species,9 make it appear more reasonable to apply a new specific name to the Jamaican bat. 9 Gundlach says (under Phyllonycteris sezekorni) : " Die Vergleichung einer grosseren Anzahl von Exemplaren wird iibrigens entscheiden miissen, ob diess eine selbstiindige Art ist oder ob sie mit der vorhergehenden zu vereinigen sein wird." 338 proceedings of the academy of [1898. June 7. The President, Samuel G. Dixon, M. D., in the Chair. Twenty-eight persons present. The deaths of Professors Jules Marcou and Fridolin Sandberger, Correspondents, were announced. June 14. The President, Samuel G. Dixon, M. D., in the Chair. Twenty-five persons present. Papers under the following titles were presented for publication : — " List of Fishes collected at the Canary Islands by Mr. O. F. Cook, with Descriptions of Four New Species." By David Starr Jordan and James Alexander Gunn, Jr. " Hyalodendron navalium, a New Genus and Species of Euplec- tillid Sponge." By J. Percy Moore. June 21. Mr. Benjamin Smith Lyman in the Chair. Nineteen persons present. A paper entitled "A New Chipmunk from northeastern China," by Gerrit S. Miller, Jr., was presented for publication. June 28. Mr. Charles Morris in the Chair. Thirteen persons present. The Committee on the Hayden Geological Memorial Award reported in favor of conferring the medal and the interest on the fund for 1898 on Professor Otto Martin Torell, the Di- rector of the Geological Survey of Sweden, in recognition of the value of his contributions to the literature of geological science, his able direction of the Swedish Geological Survey, and the eminence of his standing among geologists. The award was made by the Academy in accordance with the recommendation of the Committee. •- The following were ordered to be printed : — 1898.] NATURAL SCIENCES OF PHILADELPHIA. 339 LIST OF FISHES COLLECTED AT THE CANARY ISLANDS BY MR. 0. F. COOK, WITH DESCRIPTIONS OF FOUR NEW SPECIES. BY DAVID STARR JORDAN AND JAMES ALEXANDER GUNN, JR. In 1891, Mr. O. F. Cook presented to the Museum of the Leland Stanford Junior University a valuable collection of fishes which he had obtained on a visit to the Canary Islands. We give below an annotated list of the species contained in this collection with a de- scription of those which are new. The following species seem to be new to science. Umbrina valida Jordan and Gunn, No. 10,584, L. S. Jr. U. Scorpcena rubelllo Jordan and Gunn, No. 4,291, L. S. Jr. U. Scorpcena teneviffea Jordan and Gunn, No. 3,111, L. S. Jr. U. Blennius canariensis Jordan and Gunn, No. 4,285, L. S. Jr. U. Family GALEIDiE. 1. Mustelus canis (Mitehill). One specimen. Family SQUALID^. 2. Centrophorus granulosus (Bloch & Schneider). One specimen. Family RAJIDJE. 3. Raja clavata Linmtus. One specimen. It differs from Giinther's description in having three. rows of claw-like spines along the tail, instead of one, and in the absence of a patch of claw-like spines on the side of the head and on the pectoral. Family DASYATIDJS. 4. Dasyatis pastinacea (Linnteus.) Family LEPTOCEPHALIDiE. 5. Leptocephalus conger (Linnaeus). One specimen. It differs from the descriptions at hand in that the length of the pectoral fin is contained two aud one-half times in that of the head, instead of three and one-half times. 340 PROCEEDINGS OF THE ACADEMY OF [1898. Family MURiENID^J. 6. Muraena augusti Kaup. The one specimen of this species differs from Giinther's descrip- tion in that the tubule of the anterior nostril, instead of being as long as the diameter of the eye, is only half that length. 7. Muraena helena Linnaeus. One specimen. 8. Muraena melanotis Kaup. Two specimens. 9. Lycodontis vicinus (Castelnau) (?). Three specimens. They differ from published descriptions in be- ing mottled with whitish instead of with purplish or a darker brown than the body color. We do not feel certain of their identity with this species, and its synonymy as given by Jordan and Evermann is somewhat doubtful. Family CLUPEID.ffi. 10. Clupanodon maderensis (Lowe). One specimen. The pectoral fins are shorter than described. Family SYNODONTID.5J. 11. Synodus saurus (Linnanis). Two specimens. Family ESOCID.E. 12. Esox belone (Linnams). One specimen. Family MACRORHAMPHOSIDJE. 13. Macrorhamphosus scolopax (Linnaeus). Eight specimens. Family ATHERINIDJE. 14. Atherina boyeri Risso. Three specimens. Family MUGILIDJE. 15. Liza aurata (Risso). Four specimens. Family SPHYR.ENIDJE. 16. Sphyraena sphyraena (Linnajus). Four specimens. 1898.] NATURAL SCIENCES OF PHILADELPHIA. 341 Family MULLIDJE. 17. Mullus surmuletus Linnaeus. One specimen. Family SCOMBRID.E. 18. Scomber oolias Gnielin. Four specimens. Family GEMPHYLID^J. 19. Prometb.eicb.thys prometheus (Cuv. & Val.). The single specimen of this species has six extremely large canine teeth on the premaxillary instead of four as described and figured by Goode and Bean and by Cuvier and Valenciennes. 20. Ruvettus pretiosus (Cocc). One specimen. Family LEPIDOPODID.ffi. 21. Lepidopus caudatus (Euphrasen). Two specimens. Family CARANGIDJE. 22. Trachurus picturatus (Bowdich). Two specimens. 23. Hypodis glaucus (Linnaeus). One specimen. Family SERRANIDjE. 24. Serranus scriba (Linnaeus). Two specimens. 25. Epinephelus guaza (Linnaeus). One single specimen (=Epinephelus gigas [Brunnich]) differs from ordinary specimens by the absence of "faint, whitish spots arranged in vertical series." Family SPARID.E3. 26. Diplodus vulgaris (Cuvier & Valenoiennes). Two specimens. 27. Diplodus sargus (Linnreus). Three specimens. 28. Pagrus pagrus (Linmeus). Two specimens. 342 PROCEEDINGS OF THE ACADEMY OF [1898. 29. Pagellus centrodontus (Delaroche). The single specimen of P. centrodontus in this collection has only eight soft rays in the anal fin instead of twelve ; but the fish had evidently received an injury, during life, by which some of the pos- terior anal rays were torn away. 30. Pagellus bogaraveo (Briinnich). One specimen. 31. Pagellus^mormyrus (Linnaeus). One specimen. 32. Pagellus erythrinus (Linnaeus). One specimen. Family KYPHOSIDJE. 33. Spondyliosoma cantharus (Linnaeus). One specimen. 34. Box boops (Linnwus). One specimen. Family SCIJENIDJE. 35. Umbrina valida Jordan & Gunn, new species. Head 3i in length; depth 3; eye in head 3f ; D. X-I-29; A. II— 7 ; scales 7-47-11. Body rather stout, back elevated, ventral line from anal to lower lip nearly straight; mouth low, lower jaw embraced within upper when mouth is closed ; maxillary extending to vertical from anterior edge of pupil ; snout blunt, rounded, scaly, extending a little beyond premaxillary ; anterior nostril circular, a membrane half closing it on postero-ventral side ; posterior nostril large, pyriform, slightly nearer to orbit than to anterior nostril, a membrane nearly half closing it on dorsal side ; teeth villiform, subequal, in broad bands which are interrupted at median line in both jaws; preopercle denticulate on its bony edge ; barbel below symphysis short, thick, blunt; third and fourth dorsal spines long- est, 2£ in head ; pectorals equal to, or slightly longer than ventrals and reaching more than halfway to vent, If in head; caudal trun- cate, except for three or four dorsal rays which are abruptly pro- duced; second anal spine strong, 2f in head ; gill rakers 5 -\- 10, short, thick. Color (in spirits) yellowish-olive with a dark violet streak along each row of scales; these streaks intersect with the lateral line; vertical and ventral fins dark ; pectorals dark behind. One speci- 1898.] NATURAL SCIENCES OF PHILADELPHIA. 343 men, from Canary Islands, 30 cm. long, exclusive of caudal; col- lected by O. F. Cook. This well-marked species is nearest to Um- brina coroides Cuvier & Valenciennes. The latter has, at all ages, well-marked black cross-bands. Family POMACENTRIDJE. 36. Chromis chromis (Linnaeus). One specimen. 37. Abudefduf luridus (Broussonet). The two specimens of this species agree perfectly with the genus Abudefduf as defined by Jordan and Evermann, except that the teeth are not emarginate. The front teeth are truncate and those in the sides of the mouth rounded. This species agrees in this regard with Stegastes imbricatus Jenyns, but in the genus or subgenus Ste- gastes, the snout is fully scaled. Family LABRIDJE. 38. Centrolabrus trutta Lowe. Two specimens. 39. Diastodon scrofa (Cuvier & Valenciennes). Two specimens. 40. Sparisoma cretense (Linnaeus). Four specimens. 41. Thalassoma unimaculatum (Lowe). Head 3 J ; depth 3 J ; eye in head 5i, in inter-orbital width 1| ; snout in head 2|. D. VIII-13 ; A. III-ll ; scales 2 to 3-26 to 29 -9 to 10, before D. 6. Body-color (in spirits) olive-gray ; perpen- dicular, violet-black or reddish-brown streaks, extending across centers of scales, two-thirds down sides of body, and alternating with white streaks which extend to ventral surface; crossing these are faint, longitudinal, white streaks, extending along each row of scales and sometimes giving body a mesh-work appearance ; top of head and snout black or violet ; a more or less distinct black stripe from eye to near posterior edge of opercle ; pectorals with a small, black spot superiorly in axil, or not, darkened at tip or not ; outer rays of caudal extended along and darkened ; basal one-third of anal violet, the outer two-thirds white ; a black spot on the back at each side of dorsal at bases of second to fifth soft rays ; dorsal with a broad, dark-violet stripe along its whole length, leaving a narrow, 344 PROCEEDINGS OF THE ACADEMY OF [1898. white margin along the crest and the base, the latter usually inter- rupted by union of black spot of back and violet stripe of fin. Five specimens from Canary Islands, 7.5 to 10 cm. long, exclusive of caudal ; collected by O. F. Cook. This specimen is apparently dis- tinct from Thalassoma pavo, differing at least in color. Family TETRAODONTIDJE. 42. Sphseroides spengleri (Bloch). Two specimens. Family SCOBPJENIDJE. 43. Scorpaena rubellio Jordan & Gunn, new species. Head 2§ ; depth 3 ; eye in head 4, in inter-orbital width f ; snout in head 31. D. XII-10 ; A. Ill— 5 ; scales ctenoid and rather small, 7-26-16, before D. 6. Breast closely covered with small, smooth scales ; ctenoid scales on operculum and on posterior part of cheek above sub-orbital ridge ; a single, horizontal row of scales, some of them smooth, below sub-orbital ridge, and near them a few scattered, cup-shaped, rudimentary ones ; on top of head, from occi- put to nostrils, are scattered, minute, cup-shaped or flat scales, im- bedded in the skin, upon each of which is produced, usually from the posterior edge, one or two upright prickles. Inter-orbital area moderately concave, its longitudinal ridges hardly perceptible. No occipital or sub-ocular groove or pit. Supra-orbital and anterior nasal plumules each shorter than diameter of pupil. Three moder- ate spines on supra-orbital crest, followed posteriorly by a row of three others ; two rather low opercular ridges ending in spines ; a series of three spines behind middle of eye, the first one directed up- ward, the third with a smaller one above it. Sub-orbital ridge moderate, bearing two spines ; behind it two closely apposed spines on edge of preopercle, the hinder one larger ; below these, and also on edge of preopercle, a row of four, short, stout spines. The ante- rior and postero-ventral extremities of pre-orbital produced into spines which project over the maxillary. Two pairs of barbels, at- tached nearer lip than median line. Fourth dorsal spine longest ; 2$ in head ; last soft ray joined by membrane for nearly its whole length to the back. Second anal spine longest, longer than longest dorsal. Last ventral ray attached to the body by membrane for half its length. Body color (in spirits) reddish-brown ; a dark area at origin of lat- eral line, fading posteriorly. Head covered with dark specks. Dorsal 1898.] NATURAL SCIP;NCES OF PHILADELPHIA. 345 mottled with reddish-brown and light. The dark base of caudal sep- arated by a light area from the dark spots arranged in three or four transverse bars on the distal two-thirds of the rays. Anal chiefly dark with only a few white specks. Ventrals white, shaded with a little brown. Numerous scattered brown specks on rays of pectoral?. On the posterior side of base of pectoral and gradually diminishing in number posteriorly in the axil and on the body area which the fin covers when folded back are numerous white specks, about as large as the pores of lateral line. One specimen from Canary Is- lands ; length 9.5 cm. exclusive of caudal ; collected by O. F. Cook. This species is allied to Scorpcena porcus, but differs in the arma- ture of the head, in the coloration and in the more densely scaled breast. 44. Scorpsena teneriffea Jordan & Gunn, new species. Head 2§ ; depth 3 ; eye in head 3^, in inter-orbital width § ; snout in head 4*. D. XII-10 ; A. III-5 ; scales 6-25-13, before D. 2. Breast and head scaleless, latter pustulate, spinous, without tentacles except over anterior nostrils ; a deep inter-orbital groove corrugated by a furrow along its bottom and terminating posteriorly in a deeper, transverse, occipital groove which is continuous with the post-orbital cavities. A pair of small spines in occipital groove, two pairs of large ones behind it ; a large, hooked spine in each post- orbital pit, half way between which and the large supra-scapular spine are two short, broad ones ; one or two small spines in anterior part of post-orbital pit ; a large spine anteriorly, and two small ones posteriorly on supra-orbital ridge ; two inter-nasal spines ; preor- bital with anterior and postero-ventral extremities produced into spines and with three or four median spines, the anterior of which is largest and all of which, together with the one at postero-ven- tral extremity, project over the maxillary ; sub-orbital ridge strong, with three spines ; behind these, and situated on the poste- rior edge of preopercle, are two closely apposed spines, the hinder one the larger ; below this point, and also on posterior edge of pre- opercle, are four, short, stout spines; two ridges, the lower one stronger, cross the opercle terminating posteriorly in strong spines; a strong humeral spine above axil. Scales ctenoid, moderately large. Third and fourth dorsal spines longest, more than half length of head. Second anal spine longest, nearly equal to longest dorsal. . 23 346 PROCEEDINGS OF THE ACADEMY OF [1898. Color (in spirits) reddish-brown above, white and yellowish- white below ; a dark area on lower part of cheek and opercle ; a small dark spot above, and one or two behind axil of pectoral ; irregular dark spots on pectoral, lower rays tipped with white ; spinous dor- sal slightly darkened, a few dark spots on soft dorsal. Caudal fan- shaped, almost immaculate at base, but with large, dark spots be- tween the rays disposed in two or three transverse bars, in the cen- tral region of fin, and irregularly near its extremity. Anal white with a few dark spots ; ventrals white with one or two spots. One specimen 13.5 cm. long from Canary Islands, collected by O. F. Cook. This species seems to be distinct from the Madeira species Scor- pcena ustulate Lowe, to which it is allied. Family GOBIIDJE. 45. Gobius niger Linnaeus. One specimen. Family TRACHINIDJE. 46. Trachinus draco Linrnvus. Three specimens. Family BLENNIIDJE. 47. Labrisomus nucbipinnis (Quoy & Gaimard). In the two specimens of this species the band of villiform teeth is broader behind the upper front teeth than that behind the lower. 48. Blennius oanariensis Jordan & Gunn, new species. Head 4| ; depth 4£ ; eye in head 4£, in inter-orbital width |. D. XI-22 ; A. 11-22 ; snout rounded, obtuse, 3 in head. Two canine teeth in each jaw, the lower ones twice as large as the upper, incis- ors long, villiform, in single series in each jaw, not fixed. Dorsal beginning above margin of preopercle, continuous, extending to caudal but not uniting with it. Ventrals inserted below origin of dorsal, 7| in body-length. Distance of anal from caudal equals di- ameter of eye. Supraorbital cirrus bifid, as long as half diameter of eye ; anterior nostril with a flap equalling one-third diameter of eye. Caudal fan-shaped. Body color (in spirits) reddish-brown, whitish below ; posterior half of body sometimes whitish, in which case, three longitudinal interrupted brown stripes extend over the light part. Ventrals and pectorals reddish-brown ; vertical fins darker ; anal dark violet, the 1898.] NATURAL SCIENCES OF PHILADELPHIA. 347 rays tipped with white and sometimes whitish at base. Two speci- mens from Canary Islands, 10 and 10.5 cm. long; collected by O. F. Cook. This species seems to be different from Blennius tentacularis and from all others with which we have been able to compare it. Family TRIGLIDJE. 49. Trigla hirundo (Linnaeus). One specimen. 50. Trigla lineata (Linmcus). One specimen. Family GATHDffi. 51. Urophycis mediterraneus (Delaruche). One specimen. Family PLEITRONECTID.ffi. 52. Platophrys podas (Delaroehe). The three specimens of this species differ from published descrip- tions in having a re-entrant angle at the base of the snout, and in not having an angle opposite the upper eye. Family SOLEIDJE. 53. Solea lascaris (Risso). Two specimens. 54. Quenselia ocellata (Linnaus). One specimen. 348 PROCEEDINGS OF THE ACADEMY OF [1898. A NEW CHIPMUNK FROM NORTHEASTERN CHINA. BY GERRIT 8. MILLER, JR. In a paper recently published in these Proceedings (1898, pp. 120-125) Mr. S. N. Rhoads refers two chipmunks from the Pro- vince of Pechili, northeastern China, to Eutamias asiaticics (Gmelin). Through the kindness of Mr. Witmer Stone I now have the speci- mens before me. They agree perfectly — allowance being made for difference in pelage — with a skin in the United States National Museum taken near Peking, and differ widely from published descriptions of Eutamias asiaticus1 and from a skin of the latter (in the National Museum) labelled ' Fort TJlba, Siberia.'2 Considering the isolation of the region inhabited by the Pechili Chipmunk, and the extreme plasticity of the genus Eutamias, it is not surprising that the animal should prove to be distinct from its Siberian con- gener. The question immediately arises, however, as to what true Eutamias asiaticus really is, and at present it is impossible to give a wholly satisfactory answer. Gmelin based his Sciurus striatus a asiaticus primarily on the Sciurus striatus of Pallas,3 a compos- ite of the Asiatic and American species, but composed chiefly of the former. The range of the Asiatic animal extends, according to Pallas, from the Dwina River in Russia, east through the whole of Siberia. That only one species of Eutamias occurs in this vast area is almost beyond the possibility of belief. But however many forms there may be, and whatever one Pallas may have had in hand when he wrote his description, the animal that he described was approxi- mately like the ' Ulba ' specimen, and consequently very unlike the Chinese form. Roughly speaking, the Chinese animal is a pale, grayish, brown-striped form much like Eutamias merriami and E. senex, while the ' Ulba ' specimen, together with those usually re- 1 See, for instance, Allen, Bull. Am. Mus. Nat. Hist., Ill, pp. 71, 72, June, 1890. 2 This locality I have been unable to find on any map. In the Government of Tomsk, however, there is a river whose name is variously spelled as Uba, Ouba and Ooba. The name on the Museum label may be a lapsus pennse for Uba. sGlires, p. 378. 1898.] NATURAL SCIENCES OF PHILADELPHIA. 349 garded as true asiaticus, resembles the members of the brightly col- ored, black-striped quadrivittatus- group. That Pallas had before him a specimen of the latter type, is clearly proved by his excellent description. The back he says is marked with five black stripes, of which the middle one extends from nape to base of tail, the outer from shoulder to thigh.4 The specific name asiaticus, based on this description, is obviously inapplicable to an animal which has only one, or at most three, black dorsal stripes. The Chinese form, on account of its striking resemblance to the American Eutamias senex may be called : Eutamias senescens sp. nov. Tamias (Eutamias) asiaticus Rhoads, Proc. Acad. Nat. Sci. Philadelphia, 189S, p. 122. (Nee Sciurus striatus a asiaticus Gmelin, 1788, nee Tamias asiaticus Allen, 1890). Type.— Adult 9 (skin and skull) No. 83,395, United States National Museum, collected August 21, 1896, on low barren hills fifteen miles west of Peking, China, by Geo. D. Wilder. General characters. — Much paler and grayer than Eutamias asiaticus ; only the middle part of central dark stripe constantly black ; feet larger than in a specimen of supposed asiaticus from * Fort Ulba, Siberia.' Color. — Type specimen in fresh post nuptial pelage : sides pale yellowish-brown, becoming grizzly gray at shoulders, rump tinged with orange rufous; crown slightly browner than shoulders and nape ; sides of head yellowish-gray, with the usual stripes, the latter light brown and ill defined ; ears concolor with crown, a whitish stripe along posterior border on outer side, a faint yellowish wash within, belly soiled whitish ; tail with three bands of color, a broad, pale yellowish, median area, followed by a black subterminal band and a white border, the pattern very distinct beneath but obscured on the dorsal surface, where in addition to the three color bands normally present, the hairs have dusky bases ; median dorsal stripe extending from nape to base of tail, dusky brown anteriorly, becom- ing black near middle and fading to pale reddish-brown posteriorly ; second stripe shorter and slightly paler than first; outer stripe broader than either of the others, much paler and less well defined ; outer white stripe dusky whitish (about like belly), slightly broader 4 " Dorsum fasciis quinque nigris, longitudinalibus striatum, quarum media a nucha ad caudam, proxima? a cervice ad clunes, extimje a scapulis ad femora protenduntur." 350 PROCEEDINGS OF THE ACADEMY OF [1898. than inner, which is much the same color as grizzle of neck and shoulders ; whole back sprinkled with black and reddish hairs, the latter most numerous along the edges of the dark stripes. Adult female in worn winter pelage (No. 4,601, Academy of Natural Sciences of Philadelphia, Tung Ching Tzu, Pechili, China, May 30, 1897. Skin considerably over-stuffed) : ground color throughout much paler than in the type, rump scarcely tinged with reddish ; dark stripes on both head and body more conspicuous ; the second dorsal stripe black in middle, the median white stripes paler ; tail much less bushy but similar in arrangement of colors, except at base where new hairs are coming in. The other specimen ( $ ad. No. 4,602, Sian Lang Kou, Pechili, China, June 18, 1897), likewise in worn winter pelage is similar to the last, but a shade less pallid. • Measurements. — The material at hand furnishes a rather unsatis- factory basis for measurements. The following, however, are fairly accurate. Number sex total length tail hind foot front foot m.m. m.m. m.m. m.m. 83,395 9 297 127 40 24 4.601 9 38 22 4.602 $ — 38 23 The 'Fort Ulba' specimen measures: hind foot, 36; front foot, 20. General remarks. — The cranial characters of Eutamias senescens have been sufficiently described by Mr. Rhoads in his paper, to which reference has already been made. This paper is published here by permission of the Secretary of the Smithsonian Institution. 1898.] NATURAL SCIENCES OF PHILADELPHIA. 351 July 5. Mr. Benjamin Smith Lyman in the Chair. Nine persons present. Papers under the following titles were presented for publication : — " Contributions to Neotropical Herpetology." By Robert Baird McLain. " Critical Notes on a Collection of Reptiles from the Western Coast of the United States." By Robert Baird McLain. " The Eastern Reptiles in the Collection of the Museum of the Leland Stanford University, Zoological Department." By Robert Baird McLain. July 12. Mr. Benjamin Smith Lyman in the Chair. Eleven persons present. A paper entitled "Descriptions of Three New Rodents from the Olympic Mountains, Washington," by C Hart Merriam, was pre- sented for publication. July 19. Mr. Charles Morris in the Chair. Twelve persons present. A paper entitled "A New Land Snail from Clarion Island," by Henry A. Pilsbry, was presented for publication. July 26. Mr. Charles Morris in the Chair. Eleven persons present. Charles M. Burk, M. D., was elected a member. The following were ordered to be printed : — 352 PROCEEDINGS OF THE ACADEMY OF [1898. DESCRIPTIONS OF THREE NEW RODENTS FROM THE OLYMPIC MOUNTAINS, WASHINGTON. BY C HART MERRIAM. Owing to an unavoidable delay in the publication of my report on the Olympic Mountains, it seems desirable that the following new species of mammals should be recorded as early as practicable. Arctomys olympus sp. now Type. — From Timberline at head of Soled uc River, Olympic Mountains, Washington. No. 90,518, S ad. U. S. Nat. Mus. Bio- logical Survey Coll. Collected August 27, 1897, by C. Hart Mer- riam and Vernon Bailey. Original No. 6,210. Characters- — Size and general characters as in A. caligatus, from which it differs markedly in color, the feet being brown instead of black, and upper parts in summer pelage uniform dull ochraceous yellow, without the hoary shoulders and fore back, dark posterior back, or the blackish top of head of that species. Color. — Entire upper parts except ears and nose, dull buffy or ochraceous yellowish, becoming brown on underparts ; ears and feet brown ; chin and nose white, with a dark bar across face between nose and eyes. This face bar is probably absent in full summer pelage, and indicates the beginning of the fall change to blackish pelage. Measurements. — Type specimen, $ ad., measured in flesh : Total length, 750 mm. ; tail vertebra?, 210 mm. ; hind foot, 110 mm. Eutamias caurinus sp. nov. Type. — From Timberline near head of Soleduc River, Olympic Mountains, Washington. No. 90,636, $ ad. U. S. Nat. Mus. Bio- logical Survey Coll. Collected August 27, 1897, by C Hart Mer- riam. Original No. 6,211. Characters. — (Type specimen in post breeding pelage — molt not completed posteriorly). Similar to E- amcenus, but hind feet longer; underside of tail with black border broader, and median chestnut- fulvous band darkened by mixture of black hairs ; post-auricular patches obsolete ; face stripes duller ; back of neck not grayish or hoary, but grizzled with fulvous, like shoulders ; middle pair of 1898.] NATURAL SCIENCES OF PHILADELPHIA. 853 pale dorsal stripes less sharply defined anteriorly and everywhere mixed with fulvous hairs. Measurements. — Type specimen measured in flesh : Total length, 210 mm. ; tail vertebra?, 85 mm. ; hind foot, 34 mm. Microtus macrurus sp. nov. Type. — From Lake Cushman, Olympic Mountains, Washington. No. 66,151 9 ad., U. S. Nat. Mus. Biological Survey Coll. Col- lected June 26, 1894, by Clark P. Streator. Original number 3,975. Characters. — Similar to M mordax but larger, with longer tail and decidedly larger hind feet ; color darker. Color. — Upper parts brownish bister with a grizzled ' pepper and salt ' appearance, suggesting M. austerus ; under parts whitish, the plumbeous under-fur showing through ; tail bicolor, dusky above, whitish below, the tip sometimes white, sometimes dusky all round. In summer pelage the back is browner and the under parts are washed with buffy. Cranial characters. — Skull similar to that of M. mordax, but slightly larger, with rostrum and nasals slightly broader. Measurements. — Type specimen : Total length, 220 mm. ; tail ver- tebrae, 88 mm. ; hind foot, 24 mm. Average of 5 specimens from Olympic Mountains: Total length, 204 mm.; tail vertebras, 80; hind foot 24-3, Average of 5 specimens of M. mordax from Saw Tooth Lake, Idaho : Total length, 182 mm. ; tail vertebras, 66'5 ; hind foot, 22. Remarks. — In coloration Microtus macrurus agrees closely with M. longicaudus from the Black Hills of South Dakota, but in size and proportions it differs from longicaudus even more than from mordax. All three of these animals are very closely related, and it would not be far amiss if both mordax and macrurus were placed as subspecies of longicaudus. 354 PROCEEDINGS OF THE ACADEMY OF [1898, A NEW LAND SHELL FROM CLARION ISLAND. BY HENRY A PILSBRY. Succinea Mcgregori n. sp. Shell ovate, thin, red-amber colored, irregularly wrinkled-striate, composed of 3£ very convex whorls separated by deeply impressed sutures. Aperture two-thirds the length of the shell, regularly ovate, oblique, its width contained If times in its length ; columella arcuate, its edge thread-like above. Alt. 13J, diam. 8, length of aperture 9 mm. Alt. 12 J, diam. 7, length of aperture 8J mm. Clarion Island, collected by Mr. R. C. McGregor, in whose honor the species is named. This species closely resembles S, Donneti Pfr. from Chili in form, but differs in color, the Chilian species being pale yellowish corneous. It has the deep reddish hue of many Hawaiian Succineas, such as S- canella Gld., or the Japanese group to which S. lauta belongs. S. Oregonensis Lea is decidedly shorter and not of so dark a color. At my request Mr. McGregor furnished the following notes on Clarion Island : " Clarion Island is some three hundred miles southwest of Cape San Lucas. The sandy beaches are covered with broken coral. Back of the beach where we landed is level ground for a quarter of a mile, covered in places with cacti and vines {Ipomaza cathartica Poir., Phaseolus atropurpureus D. C and Sophora tomentosa L.). The troublesome bush, Caesalpinia Bonducella Roxb., with its sharp, curved spines, abounds on the hillsides and the flats. The interior of the island rises in more or less rough hills. There are quite a number of elevated flats or plateaux covered with a tangle of vines, grasses and shrubs. Among the last are Euphorbia Clarionensis Brandegee and E. Califomica Benth., on the stems of which was found the only land shell. This mollusk closely resembles the bark of these plants, and was very abundant. One might collect twenty or thirty specimens from a single plant. "Clarion Island is decidedly tropical, though it includes in its fauna insular forms of birds of such temperate zone genera as Speo- tyto, Zenaidura and Troglodytes. There are no mammals on the is- land. Lizards and several species of snakes were captured." 1898.] NATURAL SCIENCES OF PHILADELPHIA. 355 i August 2. Mr. Charles Morris in the Chair. Nine persons present. August 9. Mr. Benjamin Smith Lyman in the Chair. Thirteen persons present. The following biographical note was presented by the Committe on the Hayden Memorial Award : Otto Martin Torell. — Born in Varbergin Sweden, the 5th of June, 1828, he passed the examination for entrance into the Uni- versity of Lund in 1844, and was made Doctor of Philosophy, 1853. He then turned his attention to medical studies, and passed the sec- ond examination for physicians in the year 1858. He became Adjunct Professor of Zoology in 1860, and in 18G6 was nominated as Professor of. Zoology and Geology at the University of Lund. He soon left the University for Stockholm, and was in 1871 ap- pointed Chief of the Geological Survey of Sweden, which office he resigned some months ago. In 1856 he visited Switzerland with the object of studying the glaciers, and in 1857 he made a voyage to Iceland with the same view. His main purpose was to determine whether it is probable that glnciers formerly covered the whole of Scandinavia. In 1858, in company with A. E. Nordenskiold, he went to Spitz- bergeu for the first time, and the following year to Greenland. These voyages may be said to have led to the Swedish Polar Expe- ditions, and Torell was himself the leader or manager of the first of these of any importance, namely, the expedition to Spitzbergen in 1861, which was very rich in scientific results. The most important part of his work at Spitzbergen was his deep sea investigations with the grapnel, which were executed in order to study the animal life at the bottom of the sea (2,500 meters below the surface), a depth from which before that time only foraminifers had been obtained. This discovery afterwards led to many re- searches of the sea bottom, through which, one may say, a new era has arisen in the history of the geology and physical geography of the ocean bed. Partly for scientific studies and partly as a member of geological and geographical congresses, Professor Torell has made many jour- 356 PROCEEDINGS OF THE ACADEMY OF [1898. neys to Denmark, Germany, Switzerland, Italy, France, Belgium, Holland, England, and the United States. He wag one of the first Swedish naturalists to accept the glacial theory in place of the theory (by Sefstrom) of the " rullstensflod." Of his works, those which treat of the ice period are the most im- portant. To these, belong "Contribution to the molluscan fauna, with a general view of the natural state of the Arctic Regions," (1859); "Investigations of the Ice Period," 1, (1873), 2, (1873), and 3, (1887) ; and "On the causes of glacial phenomena in the northeastern portion of North America." Partly by these works and partly by lectures Torell has, in Swe- den as abroad, powerfully contributed to the dissemination of the theory that the territory of northern Europe, where great blocks of Scandinavian rocks have been found, was formerly covered by land ice, extending from Scandinavia, like the ice in Greenland at the present time, and not, as bad-been formerly supposed, by a frozen sea (Eismeer). Among other works of Torell may be mentioned : " On geologi- cal researches in Norway," (1865) ; " Contribution to the geognosy and paleontology of the Spargurite Stages," (1867); "Petrificata Suecana formationis Cambricre," (1870) ; " Sur les traces les plus anciennes de Pexistence de l'homme en Suede," (1876) ; " On the most important crystalline minerals," (1882); "The deposits on both sides of the boundary between Sweden and Norway," (1888). In 1868 the Scientific Society in Haarlem awarded to him its first prize for his work on the origin of the diluvial deposits at Gronin- gen in Holland. Dr. Torell is a member of the Royal Society of Sciences of Swedens (1870), of the Agricultural Academy (1872), and of many other scientific societies in Sweden and abroad. He is Commander of the Swedish " North Star ; " Grand Officer of the Italian Order of the Crown ; Knight of the second class of the Russian Order of St. Anna ; Commander of the Danish Danne- brog ; Officer of Public Instruction and Officier de la Legion d'honneur. August 16. Mr. Benjamin Smith Lyman in the Chair. Ten persons present. Papers under the following titles were presented for publication : — 1898.] NATURAL SCIENCES OF PHILADELPHIA. 357 "Description of a new genus and species of Microtine Rodent from Siberia." By Gerrit S. Miller, Jr. " Notes on the Arctic Red-backed Mice." By Gerrit S. Miller, Jr. August 23. Mpv. Benjamin Smith Lyman in the Chair. Six persons present. The death of James Hall, a Correspondent, the 7th inst., was announced. August 30. Mr. Benjamin Smith Lyman in the Chair. Nine persons present. The following were ordered to be printed : — 358 PROCEEDINGS OF THE ACADEMY OF [1898. NOTES ON THE ARCTIC RED-BACKED MICE. BY GEKRIT S. MILLER, JR. " We challenge the proof that Mus rutilus is not a circumpolar species." The view thus forcibly expressed by Dr. Elliott Coues twenty-one years ago1 fairly represents current opinion in regard to the Arctic Red-backed Mice, at least so far as concerns those of Alaska and the Old World. From time to time during this period, Evotomys rufocanus has been recognized as a distinct form ; but Evotomys rutilus is universally regarded as an exceptionally homo- geneous and wide-ranging circumpolar species. Writing of the Red-backed Mice in 1897, Mr. Vernon Bailey says : " The only circumpolar species [of Evotomys] is the Arctic E. rutilus, which does not undergo any considerable change throughout the cir- cumference of the Arctic zone."2 A recent examination of the Arctic red-backed mice in the Uni- ted States National Museum convinces me that the Evotomys rutilus of authors is far from the unvarying species that it has been repre- sented. While the material at hand is too limited to form the basis of anything like a final revision, it clearly proves the distinct- ness of Evotomys rufocanus, and also the existence of three forms of so-called rutilus, one in the extreme north of Europe, one in Kam- tschatka, and one in Alaska. The Mus rutilus of Pallas came from Siberia immediately east of the Obi. As no specimens from this region are available for com- parison, the question of the exact identity of the species must, for the time being, remain open. Geographical considerations lead me to apply the name rutihis provisionally to the most westerly of the Old World forms rather than to the one occurring in Kamtschatka. The latter is the Arvicola wosnessenskii of Polyakoff. Its identity with Richardson's Arvicola rubricatus from Bering Strait, is too un- certain to be worthy of serious consideration at present. The lat- ter is described as slate color on the back, and nearlv scarlet on the sides — a color pattern quite unknown in the genus Evotomys. 1 Monogr. N. Am. Eodentia, p. 138. 2 Proc. Biolog. Soc. Washington, XI, p. 113. 1898.] NATURAL SCIENCES OF PHILADELPHIA. 359 Even if it be assumed, as Baird has suggested,3 that the colors of the back aud sides were accidentally transposed in Richardson's description, the case is not much helped, since no known member of the rutilus group has slate colored sides. Although Baird assumed that Richardson's animal came from Siberia, the statement in the original description that it " appears to be quite distinct from any American meadow mouse hitherto described," leads to the belief that the type locality was on the Alaskan side of the strait. The objections to applying the name to the Alaskan animal are, how- ever, no less than in the case of the Kamtschatkan species. The general characters of Evotomys rufocanus, and of the three species hitherto confused under the name rutilus, are given in the following synopsis : Teeth large and heavy as in Microtus (never perfectly rooted ?) ; molar rows about 6.5 mm. ; posterior lower molar long, some- what encapsulated ; skull with prominent postorbital processes ; sides clear gray (highly aberrant) E. rufocanus. Teeth small and weak (perfectly rooted in adult) ; molar rows about 5 mm. ; posterior lower molar short, not encapsulated ; skull without prominent postorbital processes; sides strongly fulvous (typical Evotomys). Skull narrow ; rostral protuberances standing out conspicu- ously from root of zygoma (fig. 1 a) ; audital bulla? small ; feet slender E. wosnessenskii. Skull broad ; rostral protuberances not standing out con- spicuously from root of zygoma (fig. 1 b) ; audital bulla? large ; feet broad. Nasal bones short, contained 3* times in greatest length of skull ; tail 34-40 mm. ; color generally chestnut E. rutilus. Nasal bones long, contained only 3 times in greatest length of skull ; tail 20-30 mm. ; color generally dull ferruginous E. alascensis. Evotomys rufocanus (Sundevall). 1846. Arvicola rufocanus Sundevall, Oefv. Vet. Akad. Foerh., p. 122. 1897. Evotomys rufocanus Bailev, Proc. Biolog. Soc. Washington, XI, p. 122, May 13, 1897. Skull. — The only skull of Evotomys rufocanus that I have at hand is badly damaged. Nevertheless it shows strong characters to dis- sMam. N. Am., p. 551. 360 PROCEEDINGS OF THE ACADEMY OF [1898. tinguish it from that of E. rutilus, or in fact from any other known member of the genus. The anterior edge of the squamosal is pro- duced to form a very distinct postorbital process, quite as in many species of Microtus. The mandible is massively built and, like the skull, shows a degree of angularity more in keeping with Microtus than Evotomys. The palate, although damaged, appears to be that of typical Evotomys. Mr. Bailey says of this species : " Evotomys rufoeanus (Sundevall) of northern Europe is remarkable for its large molars and almost microtine form of skull." He gives the follow- ing measurements of a skull from Lapland : basal length, 25 mm. ; nasals, 7.6; zygomatic breadth, 15 ; mastoid breadth, 12.2; alveo- lar length of upper molar series 6.7. Teeth. — The teeth of Evotomys rufoeanus are chiefly remarkable for their large size and great strength. Their development rela- tively to the size of the skull is more in accord with the proportions normal in Microtus than in Evotomys. Apparently the molars do not develop as complete roots as in other species of Evotomys. The root of the lower incisor is nearly as long as in some species of Microtus, and the long back lower molar is encapsulated, though not conspicuously so. The enamel pattern (fig. 2 d) differs widely from that of Evotomys rutilus (fig. 2 a). Its most striking peculiar- ities are the simplicity of the posterior upper molar, and the shallow reentrant angles on the outer side of the posterior lower molar. Color. — A specimen in fresh autumnal pelage has a well defined dorsal stripe of a color intermediate between the hazel aud cinna- mon rufous of Ridgway. This stripe begins between the eyes and extends back nearly to base of tail. Ears colored like dorsal stripe. Sides an indescribable grizzle of hair brown, whitish, black, and slate color. Whole under parts soiled bufiy-white, darkened by the slaty bases of the hairs, which show through irregularly on the sur- face. Cheeks, muzzle, and sides of head similar to sides of body, but slightly darker. Tail sharply bicolor, brownish above, dirty white below. Feet dirty whitish. General remarks. — Mr. Bailey has already called attention to the fact that Evotomys rufoeanus " is the most divergent form of the genus known." So divergent is the animal that it may well be questioned whether it is to be regarded as a true Evotomys. Its heavy and apparently imperfectly rooted teeth more closely resem- ble those of many species of typical Microhcs than they do the weak, perfectly rooted teeth of true Evotomys. The relationships of the 1898.] NATURAL SCIENCES OF PHILADELPHIA. 361 root of the lower' incisor and the posterior lower molar, while not typical of either genus are clearly suggestive of Microtus rather than Evotomys. The palate structure, on the other hand, appears to agree with that of Evotomys. The question of the animal's true position cannot be answered until good series of specimens represent- ing different ages are available for comparison. Evotomys wosnessenskii (Polyakoff). 1839. ?? Arvicola rubricaius Richardson, Zoology of Beechey's Voyage of the Blossom, p. 7 (Bering Strait). 1881. Arvicola wosnessenskii Polyakoff, Appendix to Volume XXXIX of the Memoirs of the St. Petersburg Academy of Sciences, p. 56 (text in Russian) Kamtschatka. 1884. Arvicola wosnessenskii Lataste, Ann. Mus. Civ. di St. Nat di Genova,. XX, p. 28. Skull. — The skull of Evotomys ivos?ie$se7iskii as compared with that of E. rutilus and E. alascensis is slightly narrower and more depressed, though the differences in general form are not very strik- ing. The anterior edges of the antorbital foramina are folded out- ward so as to form conspicuous swellings, which for want of a bet- ter name I have called rostral protuberances. These protuberances are apparently formed by the wall of a canal which takes a super- ficial downward course from the anterior edge of the antorbital for- amen, and probably transmits a branch of the fifth nerve. In Evo- tomys wosnessenskii the rostral protuberances stand further forward from the bases of the zygomata than in E. alascensis (fig. 1). This position as well as their large size makes them very conspicuous. Audital bulla? small, much smaller than in E. rutilus or E. alascensis, their greatest breadth about equal to alveolar length of maxillary tooth row. Mandible slender and lightly built, with weaker articular process and angular process than in the related species. Measurements of an adult skull from Bering Island : greatest length, 24 mm. ; basal length, 22.8; basilar length, 21 ; zygo- matic breadth, 13.6 ; mastoid breadth, 11; interorbital constriction, 4 ; nasals, 7.8 ; incisive foramen, 5 6 ; diastema, 7.4 ;, maxillary molar series (alveoli), 5 ; man- dible, 13.8 ; mandibular molar series (al- veoli), 5. Fig. 1. Rostrum of Evo- tomys wosnessenskii (upper figure) and E. alascensis (lower figure), (x 3f ). 24 362 PROCEEDINGS OF THE ACADEMY OF [1898. Teeth. — The teeth of Evotomys wosnessenskii (fig. 2 b) present no characters of special importance. Ears. — The ears are slightly smaller than in E. alascensis, but not peculiar in form. Feet. — The hind feet are slender and much less densely furred than in E. alascensis. The latter character at first sight appears to be due to season, as most of the National Museum specimens of E. wosnessenskii were taken in summer, while the Alaskan series is chiefly composed of October skins. Several of the Kamtschatkan specimens were, however, taken during the last week in September, and one as late as October 8th. In none of these does the hairiness of the hind foot closely approach the condition found in Alaskan specimens taken from three weeks to a month later. Tail. — The tail is more slender than in E. alascensis, and less densely haired than in either E. alascensis or E. rutilus. The differ- ence is fully apparent on comparison of specimens in winter pelage. Color. — Autumnal specimens have the dorsal stripe a clear, deep, tawny, fiuely and inconspicuously sprinkled with black. Sides ochraceous buff. Belly dull whitish, faintly darkened by the slaty bases of the hairs. Summer adults are essentially similar, but im- mature specimens are much darker and duller. Measurements. — For measurements of Evotomys wosnessenskii see table, page 366. Specimens examined. — Total number of specimens examined 26, from the following localities : Kamtschatka: Bering Island, 17; Kalakhtyrka, 1 ; Petropaul- ski, 6 ; no definite locality, 2. General remarks. — Evotomys ivosnessenskii is more distinct from E. rutilus and E. alascensis than either of these is from the other. Aside from its cranial characters it is easily distinguishable from its allies by its slender, thinly haired tail and feet. Evotomys rutilus (Pallas). 1778. Mus rutilus Pallas, Nov. Sp., Quadr. Glir. Ord.,p. 246 (Siberia, east of the Obi). 1874. Evotomys rutilus Coues, Proc. Acad. Nat. Sci. Philadelphia, p. 187, (part). Skull. — In the north European Evotomys to which I have pro- visionally restricted the name rutilus, the skull closely resembles that of E. alascensis, except that the rostral protuberances are placed further forward, as in E. wosnessenskii, and the nasal bones are shorter relatively to the length of the skull. In E. alascensis the 1898.] NATURAL SCIENCES OF PHILADELPHIA. 363 nasal bones form about 33.3 percent of the occipitonasal length, while in E. rutilus they form about 28.5 percent only. The differ- ence is due to the less backward extent of the nasals in E. rutilus, rather than to any actual shortening of the rostrum. Audital bulla? large and rounded as in E. alascensis, very different from those of E. ivosnessenskii. Measurements of an adult skull from Lapland : greatest length, 24 mm. ; basal length, 22.4 ; basilar length, 20.6 ; zygomatic breadth, 13; mastoid breadth, 11.8 ; interorbital constriction, 4 ; nasals, 7; incisive foramen, 5 ; diastema, 7.4 ; maxillary molar series (alve- oli), 5 ; mandible, 13.8 ; mandibular molar series (alveoli), 5. Teeth. — The teeth of Evotomys rutilus (fig. 2 a) do not differ ap- preciably from those of E. ivosnessenskii and E. alascensis. Ears, feet and tail. — So far as can be judged from dry skins the ears of Evotomys rutilus do not differ appreciably in form from those of E. alascensis and E. ivosnessenskii. They are, however, ap- parently a trifle larger than in the latter. Feet broad, as in the Alaskan form. Tail about as in E. alascensis, but considerably longer and somewhat less densely haired. Color. — An adult male from northern Sweden taken in December and another specimen from same region but without date, agree very closely in color. Both have the dorsal stripe a clear bright chestnut, faintly darkened by a slight admixture of black-tipped hairs. The sides are ochraceous-buff, and the belly dirty white or cream color. Feet whitish ; ears chestnut. Tail sharply bicolor, brownish, tinged with red above, dirty white below. Fur every- where slaty plumbeous at base, this color appearing irregularly at surface on belly and sides. Two other undated skins from Lap- land are slightly paler in color. Measurements. — For measurements of Evotomys rutilus see table, page 366. Specimens examined. — Four, from the following localities : Lapland : no definite locality, 2. Sweden : Karesnaudo, 1 ; no definite locality (northern Sweden), 1. General remarks. — The Arctic red-backed mouse of northern Europe is readily distinguishable among the known Arctic forms* 4 There are no less than five of these, E. rutilus, E. wosnessensldi, E. alas- censis, E. ungava, and E. proteus. For descriptions of the last two, both of which are from Labrador, see Bailey, Proc. Biolog. Soc. Washington, XI, pp. 130, 131, and 137, May 13, 1897. 364 PROCEEDINGS OF THE ACADEMY OF [1898. by its bright color, absence of any known dusky phase, relatively long tail, and small square skull with large audital bulla?, conspicu- ous rostral protuberances, and short nasal bones. Evotomys alascensis sp. nov. 1S39. ?? Arvicola rubricatus Richardson, Zoology of Beechey's Voyage of the Blossom, p. 7 (Bering Strait). 1877. Evotomys rutilus Coues, Monogr. N. Am. Rodentia, p. 136 (part). 1897. Evotomys rutilus Bailey> Proc Biolog. Soc Washington, XI, p. 118 (part). Type. — Adult S , number ^l United States National Museum, collected at St. Michael's, Alaska, October 26, 1897, by E. W. Nel- son. Original number, 96. General characters. — See synopsis, page 359. Skull. — The skull of Evotomys alascensis more closely resembles that of E. rutilus than it does that of its geographically nearer ally E. wosnessenskii. The brain case is broad and squarish in outline. Squamosals produced into very small, pointed postorbital processes. Audital bullae large, their greatest breadth considerably more than alveolar length of maxillary molar series. Rostral protuberances (fig. 1 b) much closer to roots of zygomata than in either of the Old World species. The nasal bones (fig. 1) are longer than in either E. rutilus or E. wosnessenskii. This difference is not due to greater length of rostrum, but to greater backward prolongation of the nasal bones. The nasal branches of the premaxillaries also extend fur- ther back than in either of the Old World forms. The skull of the type specimen measures : greatest length, 25 mm ; basal length 22.6; basilar length, 21.8 ; zygomatic breadth, 13.4 ; mastoid breadth, 11.6 ; interorbital constriction, 4.6 ; nasals, 8 ; in- cisive foramen, 5 ; diastema, 7 ; maxillary molar series (alveoli), 5.2 ; mandible, 14 ; mandibular molar series (alveoli), 5. Teeth. — The enamel pattern (fig. 2 c) is essentially as in Old World Arctic species. Ears. — The ears do not differ in form from those of E. rutilus and E. wosnessenskii, but they are appreciably larger than in the lat- ter. Feet. — The front feet present no characters of importance. The hind feet, like those of E. rutilus, are short, broad, and very densely haired both above, on the sides, and below. On the sole the hair extends from the heel to the middle row of tubercles. Color. — In the type the dorsal stripe is dull ferruginous sprinkled with black hairs, which, however, are very inconspicuous. Sides 1898.] NATURAL SCIENCES OF PHILADELPHIA. 365 ochraceous-buff, finely ' lined ' with black. Belly clear buff, shading to grayish on the throat. Feet buffy- whitish ; face mixed buffy and Fig. 2. Enamel pattern of Evotomys rutilus (a), E. wosnessenskii (b), E. •alascensis (c), and E. rufoca?ius(&). Lower teeth below, upper teeth above. (xlO). reddish. Ears con color, with dorsal stripe. Tail sharply bicolor, buffy below, brownish tinged with red above. A series of seventeen skins taken at St. Michaels, Alaska, during October and November show little variation in] color. In some specimens there is less of the buff wash on the belly, but this is ab- sent in one only. Several are much darker below than the type. In one immature individual the red of the dorsal stripe is much duller than in the adults. Measurements. — For measurements see accompanying table. 366 PROCEEDINGS OF THE ACADEMY OF [1898. 03 a o H O l> fa o M H O « < fa o fa o fa fa as fa fa fa W H fa O GQ H fa a « fa fa CO <5 fa a •STijcara raojj jb^ J9qran>j a ^ i i *>. i i 1 2 i i i I i I a ;ooj pn;n •a3aqa;j8Ai;Bx GNC0e0CCCCNCNCCIC-lCNe0 •iCpoqpirepB8H |§388 1 1 SSS j | | | 3 1 1 1 1 1 IS •qiSnaj ib;ox H-1C1CKW 1 1 INI 1 IOI 1 1 1 1 IO sjis^ss liissllislliiiis ■xag 0*o«bO+0+«b«oOl-,<0 1 "° 1 BD' en ce en co en 'en "^ r/jaQ to (/; to tfl co tc m w ^3 ri a — — _____-_ £ £ £ Fh '£ "S *h "'« Vi "l4 "3 +3 i! fe pq ffl pq « « pq M m ^ £ g — " c/T as en & go* nT as - _li KJ — " rt 7Z n T". T3 5 .£ J= J3 .5 .£ .£3 -d "&"£ ^ ^ ^ ^ *^ ^ <^ ^ <*i « 8 ^<«< ^(-,^0,^0,^^*0 'o °t <*) «•> *■» **> 'o ^ ^ ^) ^ %» %> \) «i .^ .^ .**» .•* .^ j;ssa'4i'ii»ti)V to^^^'j^^^i'-C- _ « « Q « Q « kjkj^kj^^^kj^kj^^tiqtiqtjqc^^^tjqk^ 1898.] NATURAL SCIENCES OF PHILADELPHIA. 367 Specimens examined. — Total number of specimens examined 21, from the following localities : Alaska: Fort Yukon, 2 ; St. Michsels, 19. General remarks. — Evotomys alascensis appears to be more closely related to the European E. rutilus than to the Kamtschatkan E. wosnessenskii or to any of the American species. It has the broad skull, large audital bulla? and broad feet of E. rutilus, but differs from both European and Kamtschatkan species in its long nasal bones, and in the position of the rostral protuberances. I am permitted by the Secretary of the Smithsonian Institution to published this paper here. 368 PROCEEDINGS OF THE ACADEMY OF [1898. DESCRIPTION OF A NEW GENUS AND SPECIES OF MICROTINE RODENT FROM SIBERIA. BY GERRIT S. MILLER, JR. Before the first ocean telegraph cable was laid, the Western Union Telegraph Company organized an expedition to investigate the practicability of an overland international line by way of Alaska and Siberia. A few mammals were collected during this explora- tion, and among them is a mouse representing an uudescribed genus and species. It was taken at Plover Bay, Bering Strait, Siberia. In general appearance this animal resembles a lemming. So close is the likeness that the spe- cimen remained for many years in the Na- tional Museum collec- tion labelled ' Myodes.' Recently, however, Mr. F. W. True detected the error in identification and referred the subject to me for further study. I find that the species, while possessing no im- portant characters not found in Microtus and Evotomys, yet combines the peculiarities of these Fig. 1. Skull of Aschizomys lemminus (x 2). twQ genera gQ perfectIy that it is necessary either to recognize the new form as an annectant genus, or to reduce Evotomys to the rank of a subgenus of Microtus, and treat the Plover Bay animal as still another subgenus. While the latter course would be the more logical, it would involve the serious inconvenience of uniting two large, widely spread, and else- where sharply defined genera. Hence I prefer the first alternative. 1898.] NATURAL SCIENCES OF PHILADELPHIA. 3G9 ASCHIZOMYS gen. nov. (Microtince). Type, Aschizomys lemminus sp. nov. Generic characters. — Skull (fig. 1) broad, depressed, lightly built, smooth and rounded. Palate as in true Evotomys.1 Molars small and weak, their angles rounded as in Evotomys (fig. 2), but the teeth growing from a persistent pulp as in Microtus (fig. 3). Lower incisor with long root (nearly as in Microtus) which strongly displaces root of large poste- rior lower molar (fig. 4). Form lemming- like. Tail vertebra? shorter than hind foot • pencil nearly as long as vertebrae. Plantar tubercles six. Number of mammae unknown. Remarks. — As already intimated, the proper disposition of this genus is open to serious question. It must be recognized as an intermediate between Evotomys and Mi- crotus, but opinions may well vary between the logical course of combining all three under one generic name, and the convenient expedient of allowing each to stand as a full genus. For the present I have chosen the ™ latter course. A third alternative would be tern of Aschizomys lem- to remove from Microtus and unite w7ith mmus- (xlO). Aschizomys the subgenera Eothenomys2 and Anteliomys,2 in which the palate structure of Evotomys is exactly reproduced. With these might be joined the highly aberrant Evotomys rufocanus.3 This would not only remove anomalous forms from Microtus and Evotomys, but would also create a fairly homogeneous group characterized by the combination of shelf-like palate with long-rooted lower incisor and encapsulated posterior lower molar. When good material represent- ing all these questionable forms can be brought together, some such course as this may prove necessary. Aschizomys lemminus sp. nov. Type. — Adult, number ^^ United States National Museum, collected at Kelsey Station, Plover Bay, Bering Strait, by C. W. Baxter. •See North American Fauna, No. 12, fig. 7, and pi. II, fig. 10, July 23, 1896. 'See North American Fauna, No. 12, pp. 45-49, pi. II, figs. 8 and 11. 3 For characters of Evotomys rufocanus see antea, p. 359-361 . 370 PROCEEDINGS OF THE ACADEMY OF [1898. Fig. 3. Side view of molars upper figure Evotomys, lower fig ure Aschizomys (x 2f). External form. i — Ears broad and rounded, longer than the fur imme- diately in front of their bases. (In the dry skin the ears have shrunk considerably and appear much shorter than the surrounding fur). Muzzle hairy ; septum of the nostrils naked, the free edges crenulate and grooved transversely. Fore feet large, with five prominent tubercles. Palms naked, claws short and stout; thumb rudimentary, with a convex, compressed nail. Hind foot broad ; soles with six tu- bercles, of which five are subequal and one much smaller. Hinder part of sole densely hairy as far forward as the posterior tubercle; anteriorly granu- lar, with a considerable number of short, white hairs interspersed among the' granules. Claws moderate, over- hung with white hairs. Tail club-shaped. Whiskers long, reach- ing to the shoulder. Fur and color. — The fur is everywhere dense, soft and silky, that on the back about 10 mm. in length ; on the belly it is nearly as long. Throughout the pelage the hairs are slate-gray at base. On the back the slaty portion occupies about the basal two-thirds of the hairs. Beyond this is a narrow subterminal band of pale yellowish wood-brown. The extreme tips of the hairs are sepia. The result- ing surface color is a fine grizzle of sepia and yellowish-brown, very uniform throughout the dorsal surface. There is no indication of a darker dorsal area, but the shading is slightly heavier across the lumbar region than elsewhere. In front of each ear is an indistinct tuft of whitish hairs. Sides, belly, all four feet and legs, and under side of tail light straw-yellow, sharply defined from color of dorsal surface. This description can be only approximately correct, since it is taken from the skin which had been immersed in alcohol for many years. Tail. — Before skinning, the tail was club-shaped, and in its pres- ent condition it retains a trace of this form. For a short distance 4 From notes made by Mr. F. W. True before the specimen was removed from alcohol. 1898.] NATURAL SCIENCES OF PHILADELPHIA. 371 at base it is covered with short, loose hairs, similar in texture to those of the body. Near the middle of the tail the hairs become abruptly much elongated, stiffened and strongly directed backward. The pencil thus formed is nearly as long as the tail vertebrae. It is distinctly flattened from above. The general appearance of the tail is much like that of Dicrostonyx, but it is even more bushy than in average specimens of any lemming. Skull. — In general form the skull (fig. 1) is much like that of Evotomys alascensis, though it is considerably larger. The rostrum is more taper- ing than in E. alascensis, and the rostral protuber- ances,5 although apparently uninjured, are much less conspicuous. The incisive foramen is consid- erably shorter than in Evotomys alascensis or E. Fig. 4. Inner wosnessenskii ; audital bulhe of about the same side of left man- , , . . ,, c ,i n i .• i • dible viewed actual size as in the former, therefore relatively m- slightly from be- termediate between the two. Mandible rather nn , upper g- more heavily built than in Evotomys alascensis. lower figure As- Teeth. — Upper incisors relatively smaller than chizomys. (x 3f). 'm Evotomys alascensis ; molars relatively slightly larger. Enamel pattern (fig. 2) apparently not essentially different from that of the Arctic red-backed mice.6 The posterior upper molar is, however, remarkably long. It has four distinct salient angles on each side. Measurements. — Total length, 99 mm. ; head and body, 85 ; tail vertebras, 16; pencil, 14; hind foot, 17.5; ear from meatus, 11.5; ear in dry skin, 8.3. Skull : greatest length, 25.4 mm. ; basal length, 23.8 ; basilar length, 22; zygomatic breadth, 14.8; interorbital breadth, 4; mastoid breadth, 12.6; occipital depth, 7; fronto-palatal depth (at middle of molar series), 7; length of nasals, 3; incisive foramen, 4.6; maxillary tooth row (alveoli), 6; mandible, 15; mandibular tooth row (alveoli), 6. I am permitted by the Secretary of the Smithsonian Institution to published this paper here. 5Seeantea, p. 364. 6 See antea, p. 365, fig. 2, a-c. 372 PROCEEDINGS OF THE ACADEMY OF [1898. BOTANICAL OBSERVATIONS ON THE MEXICAN FLORA, ESPECIALLY ON THE FLORA OF THE VALLEY OF MEXICO. BY JOHN W. HARSHBERGER, PH. D. Leaving Philadelphia, Tuesday August 4, 1896, for a botanical excursion to Mexico, the capital of the Republic was reached Tues- day August 11th, at 6 p. m. Several stops were made en route, one at St. Louis, where the Missouri Botanical Garden was visited, and one at Eagle Pass, Texas, where Sunday was spent. During the sojourn in the City of Mexico, numerous botanical trips were made into the surrounding country in company with Mr. C. G. Pringle, to whom I extend my most hearty thanks for much kindness and suggestive help. The itinerary is herewith given. ITINERARY. August 12, 1896, {Wednesday). — Visited a number of the lots in the City of Mexico, where cattle and burros are allowed to roam at will, and where a number of interesting plants were collected. August 13th, (Thursday). — Mr. Pringle, Tranquelino Duran, a Mexican boy, and the writer visited Salazar by the National Railroad. Salazar is situated on the crest of the western mountain ridge, known as the Sierra de las Cruces. Here was fought, in 1810, the battle between Hidalgo and the Spaniards, resulting in a victory for the patriots. Salazar is situated at an elevation of from 10,000 to 11,000 feet above sea level. Many cool springs gush from the hill- sides, mostly denuded of timber, and many alpine plants were found in the upland meadows. August 15th, (Saturday). — Tlalpam was visited this day. In reaching this town, we passed through Cherubusco, made famous by the fight there between the Americans and Mexicans. Tlalpam is a quiet suburban town of some 7,000 inhabitants, fourteen miles south of the City of Mexico. There are many flower and fruit gar- dens hereabouts, for the supply of the city markets ; important fac- tories of cotton, woollen cloth and paper are in the neighborhood. The eastern road from Tlalpam leads to Lake Xochimilcho, where we gathered the several interesting aquatics found on and near the 1898.] NATURAL SCIENCES OF PHILADELPHIA. 373 chinarapas. The botanist must needs hire a canoe to procure speci- mens. The town is a veritable Venice. August 17, (Monday). — The town and hills of Guadalupe, the Cerro de Tepeyac and Cerro de Gachupines visited, and a number of noteworthy plants collected. Guadalupe, some three miles north of the capital, is reached by tram-cars from the Plaza Mayor, and is interesting on account of the Sacred Chapel of Nuestra Seiiora de Guadalupe. August ISth, (Tuesday). — An interesting locality visited this day was that of LaCima near the summit of Ajusco at about 10,000 feet elevation. The hill above the Indian town afforded more plants than could be conveniently carried. The pedregal in the neighbor- hood also yielded a rich harvest. August 20th, (Thursday). — This day was spent in the neighbor- hood of Tlalpam, where the fields and ditches yielded a rich supply of plants. The edge of the Tlalpam pedregal was visited, and the interesting plants of the northern portion of the lava-bed collected and noted. August 22d, (Saturday). — Another trip was made to the Tlalpam pedregal and to the hills beyond. In the pedregal, Senecio praecox DC, Cereus serpentimis and Wigandia were noted, and specimens collected for future study at home. August 25th, (Tuesday). — The pedregal of Tlalpam extending to Tizapan, the lava bed was visited in the neighborhood of that town. Here the plants were found in the same abundance as lower down the mountain side, so that the pedregal in all its parts may be said to be a veritable flower garden. August 26th, (Wednesday). — The writer left the City of Mexico for the Mexican tropics, via the Mexican Railroad to Orizaba and Cordoba ; the next few days were spent amid the tropical luxuriance of the Mexican flora. Epiphytic orchids and other interesting plants were collected about Orizaba and in the neighborhood of the waterfall called Rincon Grande. August 29th, (Saturday). — Returned to the City of Mexico, where the plants collected in the tierra caliente were preserved, some in formalin, others by drying. August 31st, (Monday). — Visited the Tlalpam pedregal on the Mexican, Cuernavaca and Pacific Railroad at a much higher ele- vation than formerly visited, at about 9,000 feet. Here Dahlias were found in the greatest profusion and abundance. Returning 374 PROCEEDINGS OF THE ACADEMY OF [1898. down the mountain side after a rough tramp over the pedregal, we took a train for the City at Eslava, where a number of plants were found. September 1st, (Tuesday). — Left the City of Mexico alone en route for Guadalajara via Irapuato, where a number of days (September 2d to September 5th) were spent. The celebrated barranca was visited in company with an Indian, and a number of plants collected. September 5th-September 9, 1896. — This time was profitably spent in a trip to Tampico on the Gulf Coast.1 En route the beautiful Tamasopo Canon was admired, as also the extensive palm forests about Rascon and eastward. No botanical exploration of the country was made. September 10, 1896. — Ciudad Juarez and El Paso were reached on the homeward journey. A hasty botanical survey was made of the hills about El Paso, but little of interest was found in the immediate vicinage of the town, because of the extreme dryness of the season. TOPOGRAPHY AND GEOGRAPHY OF THE PLACES VISITED. The Valley of Mexico, situated 7,350 feet above the level of the sea, is of an elliptical form with its long axis running in a north and south direction. The greatest length of the valley according to Orozco and Berra is from Cerro de Sincoque on the north to Cerro del Teutli on the southern border of Lake Xochimilcho, a distance of about 45 miles. The greatest breadth of the valley is from the Hacienda de los Morales, westward a distance of 21 miles. This most beautiful of basin-shaped valleys is walled in by high hills and lofty mountains on all sides. Sierra del Ajusco rises in a series of ridges and peaks to the south, the highest point the volcano of Ajusco, long since extinct, lifting its peak 13,612 feet above sea level. In the east, this ridge of mountains sinks, and forms between Amecameca and Ozumba, a broad saddle, over which passes the railroad from the capital to the State of Morelos. The eastern mountainous rim stretches itself as a mighty wall, separating the Valley of Anahuac from Pueblo. It culminates in the southeast in the volcanic peak of Popocatepetl (17,782 feet), and in Iztaccihuatl a long high broken mountain mass, 16.060 feet elevation. Contigu- ous to Iztaccihuatllying to the north, we find the continuous ranges called Cerro Telapon, Cerro Tlaloc, Cerro Tlamacas, Cerro Cha- 1 See an article by the writer in Bot. Gazette, May, 1S98, p. 362. 1898.] NATURAL SCIENCES OF PHILADELPHIA. 375 pingo and the small Sierra de Patlachique — to the east as an outlier in the Valley of Puebla, Monte de Rio Frio. These are all of vol- canic origin. About the north foot of Cerro Tlamacas spread the the fruitful plains of Otumba and Apam. The railroad to Vera Cruz crosses here. The enclosure of the Valley of Mexico is completed to the west by the Sierra de las Cruces, continued northward by the spurs called Monte alto and Monte bajo, and ending finall}- in the Sierra de Tepot- zatlan and Cerro de Sincoque, separated from the northern range of hills by the railroad cut and drainage ditch, Tajo de Nochistongo. The floor of the valley is generally level and uniform with six large lakes filling the more depressed portions. Their size and elevation in metres and square kilometers is given in the subjoined table : Area. I, 1862. II, 1868. Lake Texcoco Lake Chalco Lake Xaltocau Lake Xochimilcho . . . Lake Zumpango Lake San Cristobal . . . 182,495 sq.km. 104,985 sq.km. 54,072 sq. km. 47,050 sq. km. 17,205 sq.km. 11,060 sq. km. —1,907 m. + l,175m. + 1 ,567 m. + 1,202 m. +4, 155m. +l,690m. —0.85m. +2.16m. +2.05m. +2.16m. +5.75m. +2.05m. 416,867 sq.km. The relative elevation, minus or plus, has been referred to the base of one of the corners of the National Palace on the Plaza Mayor, as the zero level. During the diluvial period of geologic time the lakes were very much more extended than now. The whole Valley of Mexico was filled by a large inland sea with here and there a vol- canic hill rising, as an island, or as a peninsula, out of its surface. Texcoco was in the past quite saline. Fernando Cortez in a letter to Charles V, dated 1500, says : " En el dicho llano (del Valle de Mex- ico) hay dos lagunas, que casi lo ocupan todo. E la una de estas lagunas es de aqua dulce, y la otra, que es mayor, es de aqua salada." The earth of the plains surrounded Texcoco Lake is impregnated with salt, and in many places the saline material forms a rich efflo- rescence. The flora of this region of the valley has a marked char- acter. Various species of Chenopodium, Atriplex, Salsola and Grati- 376 PROCEEDINGS OF THE ACADEMY OF [1898. ola are found growing here as saline plants. The chinampas are the so-called floating islands, more especially found in Lake Xochi- milcho. A number of small conical volcanoes rise from the floor of the valley, and are known locally as Cerro de taza (cupped hill, Kup- pen). One remarkable collection of these low hills is to be found in the neighborhood of the town of Guadalupe, separating the Val- ley of Mexico into a northern and southern portion. These, the so- called Sierra de Guadalupe, are connected with the western mount- ain chain Monte bajo, by the low ridge Cuesta de Barrientos, and with the north-eastern ridges by the Cerro de Chiconautla. The northern half of the valley thus formed is occupied by Lakes Zum- pango, Xaltocan and San Cristobal, the southern half by the three lakes best known to travellers, Texcoco, Chalco and Xochimilcho. A few words are necessary as to the geography, topography and geology of the region visited botanically. Cerro de Tepeyac, one of the hills of the aforementioned Sierra de Guadalupe, is 140 ft. high ; very few plants are found on this hill. If one ascends the east side, he finds for the first 115 ft. a fine crystalline rock of a dark violet- gray color of a close texture frequently spotted with green, scaly, porous particles. The summit of the hill is covered with a pitch- stone-like rock formation about 16 to 26 ft. thick. By a rocky bridge, Cerro de Tepeyac is connected with the Cerro Gachupines. Felix and Lenk2 say of this hill : " An dessen Abhang passirt man zun- acbst zwei, 5 bezw. 8 m. machtige Pechsteinzonen, zwischen und uber welchen der rothlichgraue.kornige Andesit sich ausbreitet, der die Hauptmasse des Berges ausmacht und in einigen Steinbriichen zu industrielleu Zwecken abgebaut wird." The ped regal of Tlalpam, or of San Angel is one of the most interesting formations in the valley, covering an area of about 7,000 acres. The pedregal is an extinct lava stream situated be- tween the towns of San Angel and Tlalpam, and extending south- ward up the sides of the Sierra del Ajusco to the hill called Chitle. It was formed when the southern mountains were in active volcanic eruption. The eye of the traveller sweeps unobstructedly over an arid black landscape, which might be compared to the sudden stif- fening of the rolling surface of the sea. The country is extremely uneven and rugged ; the coulee of lava is full of cracks, blisters, 2 1890. Felix and Lenk, Beitrilge zur Geologie und PaUiontologie der Republik Mexico, I, 70. 1898.] NATURAL SCIENCES OF PHILADELPHIA. 377 caverns and sinks produced during the process of cooling. It is raised into cones, presents most curious sinuosities, and is here and there broken down into rugged jagged protuberances, as sharp and cutting as a knife's edge. This interesting coulee is from 33 to 50 ft. thick over its greatest extent, and from 20 to 26 ft. thick along its borders: Felix and Lenk3 give a very interesting and true descrip- tion of this lava bed. " Wogenberg erhebt sich neben Wogenthal ; hier ist die Lava glatt und mit einer glanzenden Erstarrungskruste uberzogen, dort ist sie, wie der Gischt der Welle, schaumig und schlackig. Deutlich kann man beobachten, wie die erstarrte Ober- fljiche haufig geborsten ist und auf den weitreichenden Rissen diinn fliissigere Lavamassen emporgequollen sind, die von den klaffenden Spaltenriindern machtige Blocke mitgerissen und nach kurzem Transport zu chaotischen Triimmerhaufen aufgestaut haben. — Ausser kleinen, einst durch die Gasentwicklung in der Lavamasse entstandenen Hohlraumen, welche schliesslich zur kleinheit der Dampfpore herabsinken, finden sich stellenweise in ihr auch gerau- mige mehrere cubikmeter haltende Grotten, welche genetisch wohl als sogenannten ' Schlackensiicke ' zu betrachten sind. Durch spa- teren der Einsturz Decken oder durch die bei Abkiihlungin Folge der eintretenden Contraction aufgerissenen Spalten sind sie zum Theilgeoffnet und bieten zahlreichen Fledermausen Wohnung, dem Reisenden bei einbrechendem Unwetter schiitzendes Obdach." The lava of the Tlalpam pedregal is a typical hypersthene free basalt. But that which concerns us mos.t are the plants, which together form a very rich and remarkable flora. Among the causes which favored the development of this peculiar flora may be mentioned the soil temperature, which is warm and uniform, owing to the soil being a basaltic scoria in the protection of which a large number of herbaceous plants flourish ; the direction of the wind, the hu- midity of the atmosphere of this region also favor a rich plant growth. The pedregal is surrounded by high hills, protected thus from the tempestuous winds of the north. Woods of pine, oak and fir clothe the hillsides and serve as an additional protection. In this region are found deep caiiadas, always damp and wet from abund- ant water, which comes from numerous showers and the spray of waterfalls which precipitate themselves from various heights. As a result of these factors, the climate of the pedregal is more temper- ' 1890. Felix and Lenk, 1. c, 79. 25 378 PROCEEDINGS OF THE ACADEMY OF [1898. ate and more constant than that of the City of Mexico, or of the Hacienda de Eslava, where a meteorological station has been estab- lished. In consequence of the meteorological conditions, the ped- regal supports a flora made up of many representatives of the tierra fria, tierra templada and tierra caliente. The Serrania de las Cruces is a continuation northwestward of the Sierra del Ajusco. It is an elevated region, and by reason of that elevation and exposure to the winds of the north and west pre- sents a very distinct flora. One part of the region, that on the west flanks of the Serrania del Ajusco, is very humid ; the central por- tion is more dry. Large forests of fir, Abies religiosa, once covered the western side, but these are fast disappearing before the axe of Mexican wood choppers. The higher elevations present a charac- teristic alpine flora. Many of the places with an eastern exposure are quite sterile, as to the abundance of plants found in such locali- ties. CATALOGUE OF SPECIES FROM THE VALLEY OF MEXICO.* A. Lots. City of Mexico. FICOIDEiE. 1. Sesuvium portulacastrum Linn. Syst. ed X, 1,058; Jacq. Amer., t. 95, Biol. Centr. Amer., I, 556. North Mexico, South Mexico, Nicaragua. Common on the sea- shores within the tropics. " Verdolaga de Costa," (Cuba). Aug. 12 (1). ONAGRACEiE. 2. GEnothera rosea [Soland in] Ait. Hort. Kew. ed. I, ii, 3; DC. Prodr., Ill, 51 ; Biol. Centr. Amer. Bot., I, 454. Widely distributed through Mexico, extending into Texas ; also in Colombia and some of the West Indian Islands. Naturalized in tropical Africa, India and the Canary Islands. Aug. 12 (3). COMPOSITJE. 8. Aster Potosinus A. Gray in Proc. Amer. Acad., XV, (1880), 32 ; Biol. Centr. Amer. Bot., II, 122. North Mexico, mountains of San Luis Potosi, 6,000 to 8,000 feet (Parry & Palmer, 384). Aug. 12 (4). 4 The natural orders are arranged according to the Engler and Prantl sys- tem. The species are according to the Index Kewensis with the aid of Hemsley's Biologia Centrali Americana (Botany). See for a description of the ecological plant regions of the Valley of Mexico an article by the writer : " A Botanical Excursion to Mexico." Amer. Journ. Pharm., 68, p. 588, and the translation Una Excursion botanica a Mexico, El Tiempo Diario Catolico, Dec. 4, 1896. 1898.] NATURAL SCIENCES OF PHILADELPHIA. 379 4. Erigeron scaposus DC, Prodr., V, 287. Aster rivularis Lees in Linnsea, V, 143, excl. synon. Widely distributed in Mexico. Aug. 12 (2). B. Tlalpam Valley of Mexico. SALICACE^J. 5. Salix Bonplandiana H. B. K., Nov. gen. et Sp., II, 24, tt. 101, 102; DC, Prodr. XVI, 2, p. 200. A tree found in several recorded districts in South Mexico. Along roads leading from Tlalpam to Lake Xochimilcho, " Sauce " (Mex- ico). Aug. 15 (86). NYCTAGINACE.SJ. 6. Mirabilis Jalapa Linn., Sp. PI., 177 ; Choisy in DC Prodr., XIII, 2, p. 427 ; Lam. 111., PL, t. 105; Bot. Mag., t. 371. Roadsides near Tlalpam. Abundant in other parts of Mexico. " Maravilla " (Cuba) ; " Marvel of Peru " ; " Four o'clock " ; " False Jalap." Aug. 15 (81). C ARY OPH YLL ACE JE. 7. Arenana lanuginosa Rohrb. in Mart. Fl.Bras., XIV, ii, 274; Biol. Centr. Amer. Bot., I, 69. Arenaria alsinoidesWi\\&. in Ges. Naturf. Fr. Berl. Mag., VII, (1813) 201. Common from North Carolina to Mexico, southward to Peru and Bolivia. Tlalpam, Aug. 22 (215). ILLECEBRACE^. 8. Corrigiola Andina Planch & Triana in Ann. Sc. Nat. Ser., IV, XVII (1862) 146; Biol. Centr. Amer. Bot., Ill, 11. Found in North and South Mexico and Colombia ; Tlalpam, Aug. 22 (220). RANUNCULACEiE. 9. Ranunculus orthorhynchus Hook., Fl. Bor. Am., I, 21, t. 9 ; Biol. Centr. Amer. Bot., I, 7. Ranunculus dickotomus M09 et Sesse in DC. Syst. Veg. I, 288. A widely distributed plant in Mexico. Ditches near Lake Xo- chimilcho, Aug. 15 (80). PAPAVERACEiE. 10. Argemone Mexicana Linn., Sp. PI., 508; Lam. 111., t. 452; Materia Medica Mexicana, 153 (plate). This is now a common weed in most tropical and sub-tropical countries, flowering from April to October, and abundant in culti- 380 PROCEEDINGS OF THE ACADEMY OF [1898. vated fields. Introduced with ballast into Philadelphia. It is used by the bush doctors of the Bahamas according to Dolley5 for the sraall-pox. " Its seeds have been used elsewhere as a substitute for Ipecacuanha, its juice is said to destroy warts, to be efficacious against the bites of venomous serpents, and to be useful in opthal- mia. " El Chicalate " ; " Argemone du Mexique " ; " Adormidera espi- nosa," Chicalotl (Mexico) ; " Cardo Santo " (Antilles, Cuba) ; " Prickly-poppy " ; " Mexican Poppy," " Yellow-thistle," " Fin Bush." Koadsides near Tlalpam, Aug. 15 (82). CRUCIFER^J. 11. Raphanus Raphanistrum Linn., Sp. PI., 669. This plant is naturalized in Mexico, and occurs in the collections of many travellers. " Wild Radish." Aug. 20 (185). 12. Sisymbrium canescens Nutt., Gen. Am., II, 68. In North America from Arctic Circle to South Mexico. Tlal- pam, Aug. 22 (221). RESEDACE.E. 13. Reseda Luteola Linn. Sp. PI., 449; Biol. Centr. Amer. Bot., I, 46. Without doubt an introduced plant. Tlalpam, Aug. 20 (186). LEGUMINOSJE. 14. Phaseolus sp. Near Tlalpam, Aug. 15 (103). 15. Trifolium amabile H. B. K. Nov. gen. et sp., VI, 503, t. 593; Biol. Centr. Amer. Bot., I, 232. Abundant throughout Mexico. The several specimens collected in 1896 are questionably referred to this species. Tlalpam, Aug. 20 (155). GERANIACE^J. 16. Oxalis divergent Benth. PI. Hartw., 9 ; Bot. Reg., t. 1,620; Biol. Centr. Amer. Bot., I, 163. Collected by various botanists in several parts of Mexico along ditches. Tlalpam, Aug. 20 (178). 17. Erodium cicutarium L'llerit ex Ait. Hort. Kew. ed. I, ii, 414 ; Leman in DC. Fl. Fr., IV, 840 ; Biol. Centr. Amer. Bot., I, 161. Widely dispersed in the north temperate regions of the Old World, and now exceedingly common in many parts of North Amer- 5 Dolley, Prov. List Plants of Bahama Islands. 1898.] NATURAL SCIENCES OF PHILADELPHIA. 381 ica, but supposed to have been originally introduced by the Span- iards. Collected by botanists in several places. Tlalpam fields, Aug. 20 (183). ANACARDIACE^l. 18. Schinus molle Linn. Sp. PI., 3S8 ; Lam. 111., t. 822 ; Biol. Cent. Am. Bot., I, 221. Dispersed from country to country by the birds tzenzontles and xilgueros, which eat the fruit and void the seeds. Found in Tropi- cal America to South Brazil, occurring in the Andes at 12,000 to 13,000 feet. Supposed to have been introduced by the early Span- iards in order to procure wood in the volcanic district (Christy). Will bear droughts and the intense summer heat of Central Austra- lia better than almost any introduced plant (Von Mueller). The plant, which flowers from March to May in Mexico, occurs in the Valley on the pedregal in saline soils, fertile soils and along the mar- gins of Lake Texcoco. " El Arbol de Peru " ; " Pelonquahuitl " ; "Copalquahuitl" ; "Molle"; " Pimientade America." Roadsides near Tlalpam, Aug. 15 (84). MALVACEAE. 19. Sphaeralcea angustifolia G. Don. Gen. Syst., I, 465 ; Biol. Centr. Amer. Bot., I, 113. Malva angustifolia Cav. Diss., I, 64, t. 20; Bot. Mag., t. 2,839. Sphaeroma angustifolium Schl. in Linnsea, XI, 353. Widely distributed in Mexico according to the collections of botan- ists. Tlalpam, Aug. 20 (181). LYTHEACE53. 20. Cuphea sp. Near ditches. Tlalpam, Aug. 15 (85). 21. Lythrum alatum Pursh. Fl. Am. Sept., I, 334; Biol. Cent. Am. Bot., 1,447. From Canada southward, chiefly in the eastern and southern States to South Mexico. Roadsides near Tlalpam, Aug. 15 (87). ONAGRACEiE. 22. (Enothera rosea [Soland. in] Ait. Hort. Kew., ed. I, ii, 3. (Repeated). Tlalpam, Aug. 20 (172). PRIMULACE.ffiJ. 23. Anagallis arvensis Linn. Sp. PI., 148; Biol. Centr. Amer. Bot., II, 289. A widely dispersed Old World plant naturalized, and common in some parts of Mexico (Hemsley). Tlalpam, Aug. 22 (no number). 382 PROCEEDINGS OF THE ACADEMY OF [1898. POLEMONIACEJE. 24. Cobaea scandens Cav. Ic, I, 11, t. 16, 17; Biol. Centr. Amer. Bot, II, 358; Bot. Mag., t. 851 ; Flore des Serres, t. 1,467. Walls of gardens. Tlalpam, Aug. 20 (148). LABIATE. 25. Salvia Mexicana Linn. Sp. PL, 25; DC. Prodi-., XII, 337; Biol. Centr. Amer. Bot., II, 361 ; Cav. Ic, I, p. 16. t. 26. Reported from a number of localities in North and South Mex- ico. Tlalpam, Aug. 22 (222). 26. Salvia amarissima Orteg. Hort. Matr., Dec. 4; DC. Prodr., XII, 317; Bot. Reg., t. 347 ; Biol. Centr. Amer. Bot., II, 553. Reported from several localities in Mexico. The specimens col- lected in 1896 are doubtfully referred to this species, differing in several respects, notably the rough hairs and long petioles from the plant so named in the herbarium of the Academy of Natural Sci- ences. It may be a variety, which I here propose, as variety petio- laris n. var. Tlalpam, Aug. 22 (223). SOLANACE.SI. 27. Solanum Cervantesii Lag. Gen. et Sp., Nov. 10 ; Biol. Cent. Am. Bot., II, 406. North and South Mexico. Roadsides near Tlalpam, Aug. 15 (83). 28. Solarium nigrum L., var. villosum Mill. S. nigrum Linn. Sp. PI., 186 ; Biol. Centr. Amer. Bot., II, 412. This species is a common weed in nearly all tropical and temper- ate countries, hut it is impossible to determine where it is really in- digenous (Hemsley). Tlalpam (154). 29. Solanum cornutum Lam. Illustr., II, 25 ; DC. Prodr., XIII, i, 328 ; Jacq. Eclog., t. 104; Biol. Centr. Amer. Bot., II, 407. North and South Mexico. Tlalpam, Aug. 20 (180). Asa Gray distinguishes S. cornutum by its simple, non-stellate hairs, otherwise it is much like S. roslratwm from Colorado. 30. Nicotiana glauoa R. Grah. in Edinb. N. Phil. Journ. (Apr.-June, 1828) 175 ; Bot. Mag., t. 2,837 ; DC. Prodr., XIII, i, 562; Biol. Centr. Amer. Bot., II, 434. " This quickly growing arborescent species can be raised on mere sand on the coast, as one of the best plants to establish shelter and stay the shifting of the sand waves. There the poisonous quality of its foliage is not objectionable. It is inadmissible to pastural places on account of its deleteriousness " (Von Mueller). North and 1898.] NATURAL SCIENCES OF PHILADELPHIA. 383 South Mexico, Valley of Mexico. Roadsides near Tlalpam and growing on walls and roofs of adobe houses. PLANTAGINACEJE. 31. Plantago Mrtella H. B. K. Nov. Gen. et Sp., II, 229, te 127 ; A. Gray, Synop. PI. N. Am., II, 392 ; Biol. Centr. Amer. Bot., II, 575. California, Mexico, Chili. Tlalpam, Aug. 20 (153). COMPOSITE. 32. Eupatorium sp. Tlalpam, Valley of Mexico, Aug. 20 (179). 33. Heterotheca Lamarckii Cass, in Diet. Sc. Nat., XXI, 130 ; DC. Prodr., V, 317; S. Wats., Proc. Am. Acad., XVIII, 102; Biol. Centr. Amer. Bot,, IV, 52. South Carolina, westward and southward, North Mexico, Monte- rey, Nuevo Leon. Tlalpam, Aug. 20 (182). 34. Heterospermum pinnatum Cav. Ic, III, 34, t. 267 ; Willd., Sp. PI., Ill, 2,129; Biol. Centr. Amer. Bot., II, 195. North and South Mexico, collected by a number of botanists. Tlalpam, Aug. 20 (219). 35. Schkuhria virgata DC. Prodr., V, 654; Biol. Centr. Amer. Bot., II, 212. North Mexico, region of San Luis Potosi, 6,000 to 8,000 feet (Parry & Palmer) ; South Mexico, Guanajuato (Mendez) ; near Tacubaya (Schaffner) ; Chapultepec (Bilimek) ; Guatemala. Tlalpam, Aug. 22 (214). C. Lake Xoehimilcho, Valley of Mexico. MARSILIACEiE. 36. Marsilia heterophylla 1 Ditches near Xoehimilcho, Aug. 15 (78). ALISMACJE. 37. Sagittaria sagittifolia Linn. var. Mexicana, Mart, et Gal. S. sagittifolia Linn., Sp. PI., 993; Biol. Centr. Amer. Bot., Ill, 439; var. Mexicana Mart, et Gal. in Bull. Acad. Brux., IX, 8; Micheli in DC. Monogr. Phanerog., Ill, 66. Lake Xochimilclio on wet chinampas, Aug. 15 (92). CYPERACEJE. 38. Cyperus unioloides R. Br. Prodr. Fi. N. Hall., 216 ; Clarke in Journ. Linn. Soc., XXI, 61. Cyperus brompides Willd. ex Link, III, 85 ; Kunth. Enum. PI. II, 8. Found in South Mexico, Guatemala, Venezuela and Paraguay. Other varieties of this species are found in India, Australia and South Africa. Lake Xoehimilcho on chinampas, Aug. 15 (93). 384 PROCEEDINGS OF THE ACADEMY OF [1898. ERIOCAULOlSrE^J. 39. Eriocaulon Benthami Kunth Enum., PI. Ill, 545 ; Biol. Centr. Amer. Bot., III, 443 ; Koern in Mart. Fl. Bras., Ill, 490. Recorded from South Mexico and Guatemala. Lake Xochimil- cho on chinampas, Aug. 15 (97). PONTEDERIACE^. 40. Eichornia azurea Kunth Enum., PI. IV, 129 ; Solms in DC. Monogr. Phanerog., IV, 528 ; Abhandl. Naturf. Gesell., Halle, VI, 177, cum icon.; But. Mag., t. 6,487. Pontederia azurea Swartz, Fl. Ind. occ. , I, 609. Common over Tropical and Extra-tropical South America and the West Indies. Closely similar to the water hyacinth Piaropus (Pontederia, Eichornia) speciosa Kunth, a native of South Amer- ica. Whether this plant is indigenous to the canals and lakes of the Valley of Mexico is a question ; at any rate it is very abundant in many of the ditches in the City of Mexico, and is also found abundantly floating about in Lake Xochimilcho. The related Water Hyacinth is extremely troublesome to navigation in the riv- ers of Florida.6 Lake Xochimilcho, Aug. 15 (88). POLYGONACEJE. 41. Polygonum amphibium Linn., Sp. PL, 361; DC. Prodr., XIV, 115; A. Gr., Man. Bot. ed. 5, 416; Fl. Dan., t. 282. A very widely dispersed species in the temperate and subtropical regions of the N. Hemisphere. Lake Xochimilcho on the edge of the chinampas, Aug. 15 (91). NYMPHAEACEJE. 42. Nympbsea Mexicana Zucc. in Abb. Akad. Muencb., I, (1832), 365 ; Flora (1832) II ; Beibl, 75 ; Biol. Centr. Amer. Bot., I, 26. The flowers of this plant are straw-yellow. Lake Xochimilcho, Aug. 15 (100). 43. Nymphaea tussilagifolia Lebm., Ind. Sem. Hort. Hamb. (1853), 10; Ann. Sc. Nat., ser. 4, Vol. I, 326. Collected by Lehman in Lake Chalco near Yotla, also found in the Amazon. The flowers of this handsome water lily are white. Lake Xochimilcho, Aug. 15 (101). 6 See the Water Hyacinth and its Kelation to Navigation in Florida, Bull. 18, Div. of Bot. U. S. Dept. Agric, H. J. Webber. 1898.] NATURAL SCIENCES OF PHILADELPHIA. 385 RANUNCULACEJE. 44. Ranunculus Cymbalaria Pursh. Fl. Am. Sept., II, 392 ; DC. Syst. I, 252 ; Biol. Centr. Amer. Bot., I, 16. Distributed from Canada to the Argentine Republic, also in Northern Asia and Europe. Ditches near Lake Xochimilcho, Aug. 15 (79). SCROPHULARIACE.aj. 45. Escobedea (linearis) laevis Cham & Schlecht in Linm-ea, V, (1S30), 108; DC. Prodr., X, p. 337 ; Biol. Centr. Amer. Bot., II, 456, also plate. Recorded from a number of localities in South Mexico. Lake Xochimilcho on the chinampas. Flowers white. Aug. 15 (90). LOBELIACE^l. 46. Lobelia fulgens Willd. Hort. Berol., t. 85 ; DC. Prodr., VII, 382; Biol. Centr. Amer. Bot.. 11,267. Lobelia splendent Willd., Hort. Berol., t. 86 ; A. Gr., Synop. Fl. N. Am. II, 3; Bot. Mag., t. 4,9K0 (var. ignea). From Texas to Panama throughout Mexico. Lake Xochimilcho on chinampas, Aug. 15 (89). COMPOSITE. 47. Solidago pamculata DC. Prodr., V, 340 ; Biol. Centr. Amer. Bot., II, 116. S. Mexicana H. B. K., Nov. Gen. et. Sp., IV, 104? Lake Xochimilcho on chinampas, Aug. 15 (95). 48. Cnicus linearifolius Watson. Lake Xochimilcho on chinampas, Aug. 15 (99). 49. Bidens chrysanthemoides Michx. Fl. Bor. Am., II, 136; Torr. & Gr., Fl. N. Am., II, 352; Biol. Centr. Amer. Bot., II, 201. Common from Canada throughout the United States east of the Rocky Mountains and in Arizona, California and North Mexico. Lake Xochimilcho on chinampas, Aug. 15 (102). D. Cerro de Guadalupe, Valley of Mexico. LILIACEJE. 50. Milla biflora Cav. Ic, II, 76, t. 196; S. Watson, Proc. Am. Acad., XIV, 240, et XVIII, 165; Bot. Reg.,t. 1,555. Found in New Mexico, South Arizona, North and South Mexico. Cerro de Guadalupe growing on exposed rocky faces of the hill in small soil pockets, Aug. 18 (108). 386 PROCEEDINGS OF THE ACADEMY OF [1898. PORTULACACEiE. 51. Talinum aurantiacum Engelm. in Bost. Jour. Nat. Hist., VI, (1850), 153 ; Biol. Centr. Amer. Bot., I, 78. Texas and New Mexico to North and South Mexico in sandy places. Cerro de Guadalupe on rock faces,7 Aug. 18 (106). 52. Talinum patens Wilkl. Sp. PI., II, 863 ; Biol. Centr. Amer. Bot., I, 79. North and South Mexico, also in South America, West Indies aud some of the Pacific Islands. Cerro de Guadalupe on rock faces, Aug. 18 (109). GERANIACEiE. 53. Oxalis decaphylla H. B. & K. Gen. et Sp., V, 238, t. 468; Biol. Centr. Amer. Bot., I, 163. Texas to North Mexico to South Mexico. This oxalid shows great senstivity to light, in that its leaves assume the hot sun posi- tion in the same manner in which they show nyctitropic, or sleep movements. Each of the ten leaflets arranged at the end of the com- mon petiole in a circular manner, first fold the two halves on each side of the midrib back to back, and then they all fold down to- gether like the closing of an umbrella. Cerro de Guadalupe, Aug. 18 (107). CACTACE.5J. 54. Mammillaria strobiliformis Scheer ex Salm. Dyck. Cact. Hort. Dyck., ed. II, 104; Biol. Centr. Amer. Bot., I, 524. Collected by Potts in Chihuahua. I refer the plant collected by me doubtfully to this species. Cerro de Guadalupe, Aug. 18. BIGNONIACE^. 55. Tecoma mollis H. B.K. Nov. Gen. et. Sp., Ill, 144; DC. Prodr., IX, 224; Biol. Centr. Amer. Bot., II, 496. North and South Mexico. Cerro de Guadalupe, Aug. 18. E. Pedregal near Tlalpam. Valley of Mexico. 6. Selaginella lepidophylla Sering. Monogr. Lycopod. II, 72 ; Biol. Centr. Amer. Bot., Ill, 707. Texas through Mexico, southward to Peru. One of the so-called resurrection plants. In normal grown condition, the leaves and 7 See An Ecological Study of the Genus Talinum with Descriptions of Two Species, Bull. Torrey Botan. Club, XXIV, p. 182, Apr., 1897, J. W. Harsh- berger. 1898.] NATURAL SCIENCES OF PHILADELPHIA. 387 branches are outspread, and the plant becomes mortar-shaped ; when dry it rolls up and may preserve this form for years. If again wetted it unrolls. Abundant on faces and sides of the lava. Pedregal near Tlalpam, Aug. 20 (190). FILIOES. 57. Polypodium sp. Pedregal near Tlalpam, Aug. 20 (164). 5G. Notholaena ferruginea Desv. Hook, Sp. Fil. V, 108 ; Eaton Ferns N. Am., I, 297 t. 39, figs. 7-10 ; Biol. Centr. Anier. Bot., Ill, 673. Texas, New Mexico, Arizona, North and South Mexico, West Indies and Colombia to Chili. Bare faces of rocks, pedregal, Aug. 22 (208). 59. Cheilanthes myriophylla Desv. Hook, Sp. Fil., II, 100, t. 105 A ; Biol. Centr. Amer., Ill, 616. North and South Mexico reported from several localities and the pedregal by Bourgeau ; in Peru and Chili. Bare rocks, pedregal, Aug. 22 (207). GRAMHSTE-ffi. 60. Bouteloua prostrata Lag. in Varied. Cienc, ii, IV (1805) 141; Gen. et. Sp. Nov. 5th; S.Wats, in Proc. Am. Acad., XVIII, 176; Biol. Cent. Am. Bot., Ill, 562. " This annual grass is widely distributed from Mexico to Colo- rado, prevailing in bottom land, where it frequently mats the ground but does not seem to be relished by cattle " (Vasey). North and South Mexico, Colombia and Ecuador. Pedregal, Aug. 20 (156). 61. Microchloa setacea R. Brown, Prodr., I, 208; S. Wats., Proc. Amer. Acad., XVIII, 176 ; Biol. Centr. Amer. Bot., Ill, 557. Reported from North Mexico southward to Bolivia and Brazil. Also in North Australia, tropical Africa and Asia. Hills near Tlalpam, pedregal, Aug. 22 (204). CYPERACEJE. 62. Cyperus seslerioides H. B. K. Nov. Gen. et Sp. I, 209 ; Biol. Centr. Amer. Bot., Ill, 451. Reported in North and South Mexico, also on the Orinoco. Pedregal, Aug. 22 (196). COMMELINACEJE. 63. Commelina scabra Benth. PI. Hartw., 26; C. B. Clarke in DC. Monogr. Phane- rog., Ill, 153 Biol. Centr. Amer. Bot., Ill, 389. South Mexico in several places. Pedregal, Aug. 22 (218). 388 PROCEEDINGS OF THE ACADEMY OF [1898. LILIACEJE. 64. Milla biflora Cav. Ic, II, 76 t. 196. Pedregal, Aug. 20 (repeated). 65. Calochortus fiavus Schult. f. Syst., VII, 1535 ; Biol. Cent. Am. Bot., Ill, 380. Reported in both North and South Mexico. The flowers have large nectar glands on the petals guarded by hairs. Pedregal, Aug. 20 (161). ORCHIDACEJE. 66. Habenaria filifera Wats. Collected by Mexican botanists on Sierra de Ajusco at Eslava, 8,000 feet. Pedregal, Aug. 22. CUPULIFER.EJ. 67. Quercus undulata Torr. var. grisea Engelm. Q. undulata in Ann. Lye. N. York, II, (1828) 248, t. 4. A low-growing, scrubby tree, used for fire-wood. Pedregal, Aug. 22 (195). PORTULACACEJE. 68. Talinum napiforme DC. (Char, amplif.) Henisley, Diag. PI. Nov. pars altera., 23 ; DC. Prodr., Ill, 357 ; Biol. Centr. Amer. Bot., I, 79 ; Bull. Torrey Bot. Club, XXIV, 183, t. 299. Described from drawing made by DC. of the species. Pedregal, Aug. 20 (166). CARYOPHYLLACE^J. 69. Drymaria gracilis Cham. & Schlecht. in Linnaea, V (1830) 232; Biol. Centr. Amer. Bot., I, 73, South Mexico. Pedregal, Aug. 22 (199). EANUNCULACE51. 70. Clematis dioica Linn. Syst. ed. X, 1084; Sloane, Hist. Jam., I, 199, 1. 128, fig. 1 ; Biol. Centr. Amer. Bot., I, 2. Recorded in several places in South Mexico, also found in Brazil, Colombia and West Indies, "Cabello de Angel" (Cuba). Pedregal, Aug. 20 (162). LEGUMINOS^!. 71. Phaseolus sp. Pedregal near Tlalpam, Aug. 20th (187). 72. Zornia diphylla Pers. Syn., II, 318; Benth in Mart. Fl. Bras., XV, 80 tt., 21, 22 ; Biol. Centr. Amer. Bot., I, 273. A very variable plant, common in most tropical and subtropical regions throughout the world, and occurring in nearly all collections 1898.] NATURAL SCIENCES OF PHILADELPHIA. 389 from Panama, Costa Rica, Nicaragua, Guatemala and Mexico. The two leaflets usually assume the bot sun position standing up verti- cally back to back. When the plant is in flower, these serve to en- close the blossom. Pedregal on exposed lava in rosettes, Aug. 20 (167). 73. Eysenhardtia amorphoides H. B. & K. Nov. Gen. et Sp., VI, 489 t. 592. From New Mexico, Texas, through North to South Mexico. " Palo dulce bianco ; " " Coatle." Used as a succedaneum for san- dal-wood. Pedregal, Aug. 22 (1 97). 74. Crotalaria pumila Orteg. Hort. Matr., 23 ; Biol. Centr. Amer. Bot., I, 228. From New Mexico to South Mexico. Pedregal, Aug. 22 (217). 75. Phaseolus sp. Pedregal, Aug. 22 (212). EUPHORBIACE.SJ. 76. Acalypha phleoides Cav. in Anal. Hist. Nat. Madr., II (1800) 139 ; Biol. Centr. Amer. Bot., Ill, 127. Abundant in two varieties through Mexico, The plant collected in 1896 in the Valley of Mexico is doubtfully referred to this spe- cies. Pedregal, Aug. 22 (203). 77. Euphorbia adenoptera Bertol. Misc. Bot., Ill, 20, t. 23 ; DC. Prod., XV, 2, 49. Distributed from Florida, Texas, New Mexico to South Mexico, West Indies and South America. Doubtfully referred by me to this species. Pedregal, Aug. 22 (202). SAPINDACEJE. 78. Cardiospermum Halicacabum Linn. Sp. PI. 366; Biol. Cent. Am. Bot., I, 209. A very common plant in tropical and subtropical regions of both hemispheres. It was difficult for me to distinguish my plant from C. molle, which it closely resembles. North and South Mexico. Pedregal, Aug. 20, climbing over other plants (159). MALVACEAE. 79. Malvastrum Peruvianum A. Gray. Bot. U. S. Explor. Exped., I, 146; Biol. Centr. Amer. Bot., I, 99. Pedregal, Aug. 22 (224). CAOTACEiB. 80. Cereus serpentinus DC. Prodr. Ill, 467 ; Biol. Centr. Amer. Bot., 546 ; Bot. Mag., t. 35,66. South Mexico, used occasionally for forming hedges. Pedregal, Aug. 22. 390 PROCEEDINGS OF THE ACADEMY OF [1898. UMBELLIFER.EJ. 81. Eryngium comosum Delar. Eryng. 30, t. 7 ; Biol. Centr. Arner. Bot. I, 560. Recorded from a number of stations in South Mexico. Pedregal, Aug. 22 (211). ASCLEPIADAOEJE. 82. Asolepias neglecta Hemsley. Biol. Centr. Amer. Bot., II, 325. Recorded from South Mexico by a number of botanists. The specimens collected in 1896 doubtfully referred to this species. Hills above Tlalpam portion of pedregal, Aug. 22 (194). 83. Aselepias Linaria Cav. Ic, I, 42, t. 57 ; Biol. Centr. Amer. Bot., II, 324 ; DC. Prodr., VIII, 570. North and South Mexico. Pedregal, Aug. 20 (165). 84. Philibertia elegans Hemsl. Biol. Centr. Amer. Bot., II, 318. / Recorded from a number of localities in South Mexico. A climb- ing or trailing plant. Pedregal, Aug. 20 (188). PLUMBAGINACEJE. 85. Plumbago pulchella Boiss. in DC. Prodr., XII, 692 ; Biol. Cent. Am. Bot., II, 287. From North to South Mexico. Used by the Mexican Indians to raise blisters, cure toothache and the running of the eyes (Materia Medica Mexicana, p. 79, fig.) "El Paiiete" ; " Jiricua " ; " Tlepatli" ; " Yerba del alacran"; " Cola depescado " ; " Cola de iguana" ; " Yerba lumbre." Pedregal, Aug. 22 (213). CONVOLVULACEJE. 86. Ipomoea longipedunculata Hemsl. Biol. Centr. Amer. Bot., II, 389. Pedregal, Aug. 20 (175). VERBENACEJE. 87. Priva tuberosa S. Wats, in Proc. Amer. Acad., XVIII (1883) 135. Pedregal near Tlalpam, Aug. 22 (198). LABIATE. 88. Mentha rotundifolia Huds. Fl. Angl. ed. I, 221 ; Biol. Cent. Am. Bot., II, 546. Naturalized in some parts of Mexico. Found also in Europe, Asia, and Northern Africa. Pedregal, Aug. 22 (221a). SOLANACEJE. 89. Nectouxia formosa H. B. & K. Nov. Gen. et Sp., Ill, 10, t. 193; Biol. Centr. Amer. Bot., II, 425. This herbaceous monotype has been collected in a number of places in Mexico. The fruit is eaten. Pedregal, Aug. 20. 1898.] NATURAL SCIENCES OF PHILADELPHIA. 391 90. Solanum bulbooastanum Dun. in Poir Encyc. Suppl., Ill, 749 ; Biol. Centr. Amer. Bot., II, 405. Pedregal, Aug. 22 (209). SCROPHTJLARIACE.aS. 91. Pedicuiaris Mexicana Zucc. ex Bunge in Bull. Phys. Math. Acad. Petersb., I, (1843) 384; Biol. Centr. Amer. Bot., II, 467. Pedregal, Aug. 20 (184). 92. Lamourouxia rhinanthifolia H. B. & K, Nov. Gen. et Sp., II, 337, t. 169 ; Biol. Centr. Amer. Bot., II, 466. Collected in quite a number of places through Mexico. Pedre- gal, Aug. 22 (193). ACANTHACE^J. 93. Calophanes decumbens A. Gr. Syn. Fl. N. Am., II, i, 325 ; Biol. Centr. Amer. Bot. II, 502. From Texas, Arizona to the Valley of Mexico. Pedregal, Aug. 22 (200). 94. Ruellia sp. On hills above pedregal near Tlalpam, Aug. 22 (205). COMPOSITE. 95. Tagetes lucifer Cav. Ic, III, 33, t. 264; Biol. Centr. Amer. Bot., II, 222; DC. Prodr. V, 643 ; Bot. Mag., t. 740. Extending from Texas through North to South Mexico. Col- lected by Bourgeau in pedregal. " Pericon." pedregal, Aug. 20 (192). 96. Dahlia coccinea Cav. Ic, III, 33, t. 266 ; Bot. Mag., t. 762 ; Biol. Centr. Amer. Bot., II, 196. Collected by Bourgeau in the Valley of Mexico. This plant has a northerly and extensive distribution. " From the Cordilleras of Chihuahua, within 200 miles of the United States boundary, it ranges southward through the mountains to Jalisco and the Valley of Mexico. It shows a remarkable variation in color from cardinal of several shades, through scarlet, scarlet-orange, mandarin, orange, lemon-yellow, yellow. The so-called scarlet-orange rays are scarlet with lines of yellow running through, so that the strap-shaped corolla has a somewhat banded appearance. The ligulate corolla is about an inch long and half an inch broad. The entire head varies in size from two inches in the cardinal ones to three inches in the scarlet-orange." (See my article " The Native Dahlias of Mexico," Science n. s. VI, 909, Dec. 17, 1897). Pedregal near Tlalpam, Aug. 20 (160). 392 PROCEEDINGS OF THE ACADEMY OF [1898. 97. Zinnia pauciflora Linn. Sp. PL ed. II, 1,269 ; Lam. 111., t. 685, f. 1 ; Biol. Centr. Amer. Bot., II, 154; Ainer. Acad. Arts & Sci., XXXII, 19. Mexico, Andes of Peru, Bolivia, St. Thomas, W. I., and intro- duced into W. Africa and Cape Verde Islands. Pedregal, Aug. 20 (157). 98. Zexmenia aurea Benth & Hook, f. Gen., II, 371, in nota sub Wedelia; Biol. Centr. Amer. Bot., II, 172. Pedregal, Aug. 22 (191). 99. Tagetes micrantha Cav. Ic, IV, 31, t. 352; DC. Prodr., V, 646; Biol. Centr. Amer. Bot., II, 222. Recorded by a number of botanists from Arizona and Texas southward to Costa Rica. Pedregal, Aug. 22 (201). 100. Pectis prostrata Cav. Ic., IV, 12, t. 324; DC, Prodr., V, 100; Biol. Centr. Amer. Bot., II, 226. Collected in Florida, New Mexico, Mexico, Colombia and the AVest Indies (Cuba). " Romero macho " (Cuba) ; Pedregal, Aug. 22 (210). 101. Stevia Eupatoria Willd. Sp. PL, III, 1,775; Bot. Mag., t. 1,849; Biol. Centr. Amer. Bot., II, 86. The specimens resemble Stevia linoides Schult. Bip., although the inflorescence is flatter and more compact. The plant is, therefore, doubtfully referred to the above named species ; North and South Mexico. Pedregal, Aug. 22 (206). 101b. Senecio praecox DC, Prodr., VI, 431. Senecio praecox is a composite plant inhabiting the volcanic beds in the Valley of Mexico. It has a cylindrical stem rising three or four feet from the ground with clustered, deeply lobed leaves at the top. The plant stores up an abundant supply of water in the pith, which is gradually used up during the dry season in Mexico, which lasts from October to June. The flowers develop in April at the expense of the reserved supply of water. Loss of water during the dry season is prevented by the fall of the leaves, and by the protec- tive cork and balsam secreted in the exo- and endocortex. The water stored in the turgid discs of pith is gradually conducted by the woody cells and tracheids, which penetrate into the medulla by wedge shaped ingrowths, representing the primary bundles, to the growing point where it is used. That this is the case, is shown by the dry parchment-like pith membranes, which were left in a piece of a stem which had remained in the dry state for over sixteen 1898.] NATURAL SCIENCES OF PHILADELPHIA. 393 months. Conduction of water in this stem was accomplished with- out the aid of root pressure, without any appreciable influence on the part of the small green leaves in drawing up the liquid by the pumping action of transpiration.8 Pedregal near Tlalpam, Aug. 22. F. Pedregal near Tizapan, Valley of Mexico. Tizapan is a suburban village of the City of Mexico, much higher in elevation above the floor of the valley than Tlalpam, which lies to the northwest of Tlalpam. The pedregal near Tizapan presents the same rugged characters as elsewhere. Along its edge, here, runs the small stream known as Rio Cherubusco. The region shows the same profusion of flowering plants as elsewhere in the pedregal. TILICES. 102. Pellaea gracilis. Pedregal, 7,500-8000 feet, Aug. 25 (334). COMMELINACE^l. 103. Tradescantia crassifolia Cav. Ic, I, 54, t. 75 ; Bot. Mag., t. 1,598 ; Biol. Centr. Amer. Bot., Ill, 391. North and South Mexico, pedregal (Bourgeau). Pedregal, 7,500 -8000 feet, Aug. 25 (227). DIOSCOREACEjE. 104. Diosoorea sp. Pedregal, 7,500-7,800 feet, Aug. 25 (440). PORTULACACE^l. 105. Calandrinia grandifiora Lindl. Bot. Beg., t. 1,194. Pedregal, 7,500-7,800 feet, Aug. 25 (337). LEGUMINOSJE. 106. Eysenhardtia amorphoides H. B. & K. Nov. Gen. et. Sp., VI, 489. Pedregal, 7,500-7,800 feet, Aug. 25. 107. Zornia diphylla Pers. Syn., II, 318. Pedregal, 7,500-7,800 feet, Aug. 25. 108. Cassia sp. Pedregal, 7,500-7,800 feet, Aug. 25. 8 See abstract of paper Water Storage and Conduction in Senecio praecox from Mexico, read at Soc. Botanical Physiologists and Morphologists at Cor- nell University, in Bot. Gaz., Feb., 1898, p. 116, also Science, n. s., vii, p. 120. 26 394 PROCEEDINGS OF THE ACADEMY OF [1898. 109. Indigofera sp. Pedregal, 7,500-7,800 feet, Aug. 25. SAPINDACE^S. 110. Dodonsea viscosa Jacq. Enum. PI. Carib., 19; Linn. Mant., 228; Biol. Centr. Amer. Bot., I, 215. Collected by Dr. Jose Ramirez on the pedregal at Eslava. A plant found in nearly all tropical, sub-tropical and south temperate regions throughout the world, and very common in Central America and Mexico. I doubtfully refer the plant collected to this species. " Chapulistle ; " " Limonillo." Pedregal, Aug. 25 (276). SOLANACEJE. 111. Solanum nigrum Linn. Sp. PI., 186; DC. Prodr., XIII, i, 50; Biol. Centr. Amer. Bot,, II, 412. A common weed in nearly all tropical and temperate countries ; but it is impossible to determine where it is really indigenous. Col- lected by Dr. Jose Ramirez at Eslava 8,725 feet. Tizapan ped- regal, Aug. 25. COMPOSITiE. 112. Dahlia cocoinea Cav. Ic, III, 33, t. 266. Tizapan pedregal, 7,500-7,800 feet (228 a. See ante). G. Contreras. Contreras is a station on the Mexico, Cuernavaca and Pacific Railroad 17.5 miles from the City of Mexico. The following plants were collected while the train stopped. PHYTOLACCACEJE. 113. Phytolacca octandra Linn. Sp. PI., ed. II, 631; DC. Prodr., XIII, ii, 32; Biol. Centr. Amer. Bot., Ill, 30. South Mexico and southward to Peru and Uruguay, and in the West Indies. Aug. 18 (114). SOLANACEJE. 114. Physalis pubescens Linn. Sp. PL, 183; Griseb. Fl. Br. W. Ind., 435; Biol. Centr. Amer., Ill, 420. Generally dispersed in tropical America, Aug. 18 (113). H. Eslava. The Hacienda of Eslava and the village of that name are dis- tant from the City of Mexico 19 miles. The pedregal, which 1898.] NATURAL SCIENCES OF PHILADELPHIA. 395 here reaches its northern limit, is elevated 2,500-3,500 metres (8,000-11,800 feet). The flora presents a greater richness than lower down, the region being protected from the cold winds, which blow over the valley, by the forests of oak and pine and by the high hills to the west and north. It is, therefore, warmer. CONIFERS. 115. Pinus leiophylla Schlecht & Cham, in Linnsea, VI, (1832), 354; Biol. Centr. Amer. Bot., , III 187. Collected by a number of botanists in different parts of Mexico. Peak of Orizaba, 7-9,000 feet (Linden) ; Pedregal and Canada de Tizapan (Christy). Called "Pino;" "Ocotechino" by the Mexi- cans. Eslava pedregal 8-10,000 feet, Aug. 31 (396). AMARYLLIDACE.ffi. 116. Agave megalacantha Hemsl. Diag. PI. Nov. Mex., 3, 55 ; Tab. LXXXVIII, A. Eslava pedregal, 9,000 feet, Aug. 31 (400). (Collected by Bourgeau here). CUPULIFERJE. 117. Quercus reticulata Humb. Bonpl. Fl. ^Equin., II, 40, t. 86; Biol. Centr. Amer. Bot., Ill, 176. Collected in several parts of South Mexico. Peak of Orizaba, 8,000 to 10,000 feet (Liebmann) ; San Angel (Bourgeau), etc.; Es- lava pedregal, 8-10,000 feet, Aug. 31 (394). LEGUMINOSJE. 118. Lupinus sylvaticus Hemsl. Biol. Centr. Amer. Bot., I, 231. North and South Mexico, Valley of Mexico, Desierto Viejo (Bour- geau). Eslava pedregal, 9,000 feet, Aug. 31. RHAMNACEJE. 119. Ceanothus azureus Desf. Tabl. ed. II, 232; Biol. Centr. Amer. Bot., I, 199 ; Bot. Beg., t. 291. Recorded from a number of localities in Mexico, and collected by Dr. Jose Ramirez at Eslava, 8,830 feet ; a very ornamental plant in flower. " Sayolistle ; " " Cuaicuastle." Eslava pedregal, 10,000 feet, Aug. 31 (393). OROBANCHACE^J. 120. Conopholis Mexicana A. Gray ex S. Wats, in Proc. Amer. Acad., XVIII, (1882-83), 131. Really not distinct from C. Americana Wallr., which ranges from New England to Michigan and Florida. Eslava pedregal, 9.000 feet ; parasitic on roots of oak. Aug. 31. 396 PROCEEDINGS OF THE ACADEMY OF [1898. RUBIACEiE. 121. Crusea br achyphy 11a Cham. & Schlecht in Linnaea, V, (1830), L65; Biol. Centr. Amer. Bot., II, 57. South Mexico, peak of Orizaba at 7,000 feet ; Eslava pedregal, 8-10,000 feet, Aug. 31 (399). COMPOSITE. 122. Dahlia Merckii Lehm. Delect. Sem. Hort. Hamb. (1839), ex Linnaja, XIV, (1840) 130; Biol. Centr. Amer. Bot., II, 197. North Mexico, region of San Luis Potosi, 6,000 to 8,000 feet (Parry & Palmer) ; South Mexico, Real de Monte (Coulter), summit of a mountain near Guadalupe (Bourgeau). This dahlia is one of the showy species ; the color of its flowers runs from purple to pure white through the gradual fading out of the purple color. One most commonly sees in a state of nature the white heads, which are tinted with lavender or pale purple at the base of the ray floret. The heads in each case are nearly uniform in size, being about an inch and three-fourths across. (See an article of mine, " The Na- tive Dahlias of Mexico," Science n. s., VI, 910, Dec. 17, 1897). Eslava pedregal, Aug. 31 ; 10,000 feet. 123. Dahlia coccinea Cav. Ic, III, 33, t. 266. Eslava pedregal, 10,000 feet, Aug. 31 ; (see ante). 124. Dahlia variabilis Desf. Cat. Hort. Par., ed. Ill, 182. This dahlia is confined to the region around, including the Val- ley of Mexico. It is a most striking plant, growing from 5 to 6 feet tall, and bearing flowers ranging in color from purple to sulphur- yellow through the following gradations: lavender-purple, helio- trope, heliotrope-yellow (various shades of lighter and lighter hue approaching yellow), sulphur-yellow. The heads in which the ray florets are colored heliotrope-yellow, are in reality of an heliotrope color, the bases of the ligulate corolla being of a yellow color, shad- ing off into heliotrope. They are broad (1 inch), long (2 inches) and ovate spatulate. See " The Native Dahlias of Mexico," (Science n. s., VI, 909, Dec. 17, 1897). Eslava pedregal, 10,000 feet, Aug. 31 (390). 125. Cosmos sp. Eslava pedregal, 9,000 feet, Aug. 31 (384). 126. Stevia nudiflora. Eslava pedregal, 9,000 feet, Aug. 31 (385). 1898.] NATURAL SCIENCES OF PHILADELPHIA. 397 127. Stevia sp. Eslava pedregal, 9,000 feet, Aug. 31 (386). I. La Cima. Summit of Sierra del Ajusco. La Cima is an Indian town 38 miles from the city of Mexico on the crest or summit of the Sierra del Ajusco at about 11,000 feet above sea level. It is, therefore, about 2,000 feet lower than the Cerro Grande del Ajusco, or volcanic cone (13,612 feet). It was from this extinct crater, that the great pedregal of Tlalpam and many of the smaller pedregals were formed by lava flows in prehistoric times. The pedregal of La Cima is lower than the town, which consists of a few adobe huts. It presents the same rugged features, as those of the great lava bed between San Angel and Tlal- pam, which has been already fully described. Most of the plants mentioned in the accompanying list are from the hill overlooking and directly above the town on the east side of the railroad. The soil of this hill is of a rich black character and is marked by many foot paths running in every direction. CONIFERS. 128. Juniperus tetragona Sehlecht in Linnaea, XII (1838) 495 ; DC. Prodr., XVI, ii, 491; Biol. Centr. Anier. Bot., Ill, 184. Reported from North Mexico in the Sierra Madre to South Mexico and ascending on the peak of Orizaba to the limits of vegeta- tion 12,000 to 14,000 feet. Pedregal, La Cima, Sierra del Ajusco, 11,000 feet, Aug. 18 (125). 129. Pinus Montezumae Lamb. Gen. Pin. ed., I, iii, 149, t. 64; Biol. Centr. Amer. Bot., Ill, 1SS. A plant of many synonyms ; it stretches from North to South Mexico, extending to timber line on Orizaba, Popocatepetl and Iztaccihuatl, 10-14,000 feet. La Cima, Sierra del Ajusco, 11,000 feet, Aug. 18 (126). LILIACEJE. 130. Stenanthium frigidura Kunth. Enum., PI. IV, 189 (1843); Biol. Centr. Amer. Bot., Ill, 381 ; Baker in Journ. Linn. Soc, XVII, 484. South Mexico, peak of Orizaba 9,000 to 12,500 feet (Linden); Anganguio, 9,000 feet (Hartweg). Pedregal, La Cima, 10,000 feet, Aug. 18 (132). 131. Anthericum sp. Sierra del Ajusco. A plant with fascicled roots for storage of food, an inch, or two long. Aug. 18 (143). 398 PROCEEDINGS OF THE ACADEMY OF [1898. IRIDACE.aJ. 132. Sisyrinchium Schaffneri S. Wats, in Proc. Amer. Acad., XVIII, (1883) 160. Sierra del Ajusco, Aug. 18 (144). ORCHIDACE.EJ. 133. Microstylis tenuis Wats. La Cima, ped regal, Aug. 18 (117 specimen lost). 134. Spiranthes aurantiaca Hemsl. Biol. Centr. Amer. Bot., Ill, 300. Reported from several stations in South Mexico. The specimens here were collected by Mr. John MacGlashen assistant to Mr. Pringle. La Cima, pedregal, Sierra del Ajusco, Aug. 18 (116). PIPERACEJE. 135. Peperomia umbilicata Ruiz and Pav. FI. Per., I, 30, t. 45, f. b. ; Biol. Centr. Amer. Bot., Ill, 66. North to South Mexico, Colombia and Bolivia. The small tubers are of a piquant flavor resembling the true pepper (pimienta) ; hence, " Pimienta de tierra." Sierra del Ajusco, 11,000 feet, Aug. 18 (145). SAXIFRAGACE.5]. 136. Ribes Jorullense H. B. & K. Nov. Gen. et Sp., VI, 61 ; Biol. Centr. Amer. Bot., I, 386. Emetic properties are attributed to the roots of this plant, called "Saracuacho" by the Mexicans. La Cima, pedregal, Aug. 18 (124). 137. Ribes microphyllum H. B. & K. Nov. Gen. et Sp., VI, 62; Biol. Centr. Amer. Bot., I, 386. La Cima, pedregal, 11,000 feet, Aug. 18 (115). ONAGRACE.2E. 138. Oenothera sinuata Linn. Mant., II, 228 ; Biol. Centr. Amer. Bot., I, 454. From the United States southward through Mexico. Sierra del Ajusco, 10,000 feet, Aug. 18 (138). UMBELLIFER^l. 139. Eryngium montanum Coult. & Rose. La Cima, pedregal, Aug. 18 (112). CORNACE^3. 140. Garrya lauriflolia Benth. PI. Hartw., 14; Biol. Centr. Amer. Bot., I, 576. Reported from a number of localities in North and South Mex- ico. A plant used medicinally. " El Cuauchichic ;" " Chichicua- huitl." Sierra del Ajusco, Aug. 18 (147). 1898.] NATURAL SCIENCES OF PHILADELPHIA. 399 ERICACEAE. 141. Pernettya ciliaris D.Don, ex. G. Don Gen. Syst., Ill, 837; Biol. Centr. Amer. Bot., II, 280. A strong, low growing, woody shrub with ericaceous lanceolate leaves and red berries and strong root development. Said to be poisonous to sheep. La Cima, Sierra del Ajusco, Aug. 18 (133). GENTIANACE^. 142. Haleniaparviflora G.Don. Gen. Syst., IV, 177; Biol. Centr. Am. Bot., 11,352. Distributed through Mexico to Colombia and Peru. La Cima, Sierra del Ajusco, Aug. 18 (137). BORAGINACEJE. 143. Lithospermum angustifolium Michx. Fl. Bor. Am., I, 130; Biol. Centr. Amer. Bot., II, 381. Illinois to Wisconsin, southward to Texas and westward to Utah and Arizona, also in Mexico. La Cima, Sierra del Ajusco, Aug. 18 (136). 144. Lithospermum distichum Orteg. Hort. Matr., Dec. 8 ; Biol. Centr. Amer. Bot. II, 381. South Mexico, peak of Orizaba, 11,000 to 12,000 feet (Galeotti). Sierra del Ajusco, Aug. 18 (146). LABIATJE. 145. Salvia glechomaefolia H. B. & K. Nov. Gen. et Sp., II, 290, t. 141 ; Biol. Centr. Amer. Bot., II, 556. South Mexico between Guanajuato and Santa Rosa at about 8,800 feet (Humb. & Bonpl). Sierra del Ajusco, Aug. 18 (142). SOLANACEJE. 146. Nectouxia formosa H. B. & K. Nov. Gen. et Sp., Ill, 10, t. 193. Reported from various parts of Mexico. La Cima, Sierra del Ajusco, 11,000 feet, Aug. 18 (110). 147. Solanum tuberosum Linn. Sp. PL, 185; Biol. Centr. Amer. Bot., II, 416. " The potato is wild in Mexico, but whether really indigenous it is impossible to say. It is probable that more than one species was concerned in the parentage of the cultivated varieties. On the other hand, several tuberiferous Solani described by various authors as- distinct species differ less from each other than the more distinct of the cultivated varieties." These plants in such an unfrequented place as the pedregal on top of a high mountain are probably wild. 400 PROCEEDINGS OP THE ACADEMY OF [1898. Ejemplar silvestre recogido de la montaiia. This plant was one foot high with purple flowers. Ped regal, La Cima, 10,000 feet, Aug. 18 (131). 148. Solanum tuberosum Linn. var. boreale Gray. Sierra del Ajusco, Aug. 18 (140). SCROPHULARIACE^. 149. Castilleja angustifolia Mart. & Gal. in Bull. Acad. Brux., XII, ii, (1845) 29; Biol. Centr. Amer. Bot., II, 460. Sierra del Ajusco, Aug. 18 (123 A). 150. Castilleja tenuiflora Benth. PI. Hartw., 22. Pedregal, La Cima, Aug. 18 (123). 151. Pentstemon barbatus Roth. Catalect. fasc, III, 49 ; Nutt. Gen. Am., II, 53. Pentstemon coccinens Engelm. in Wisliz.Tour. North. Mex., 107 (Sketch, 23). Colorado, New Mexico, North and South Mexico. La Cima, Sierra del Ajusco, 10,000 feet, Aug. 18 (104). 152. Pentstemon imberbis Trautv. in Bull. Sc. Petersb. V, (1839) 345 ; Biol. Centr. Amer. Bot., II, 445. Reported by a number of botanists in North and South Mexico. La Cima, Sierra del Ajusco, Aug. 18 (104a). 153. Pedicularis Mexicana Zucc. ex Bunge, in Bull. Phys. Math. Acad. Petersb., I, (1843)384. Pedregal, La Cima, 11,000 feet, Aug. 18 (111). CAPRIFOLIACEJE. 154. Symphoricarpos microphyllus H. B. & K. Nov. Gen. et Sp. Ill, 424; Biol. Centr. Amer. Bot., II, 4. North Mexico, region of San Luis Potosi to South Mexico. Pedregal, La Cima, Sierra del Ajusco, Aug. 18 (122). COMPOSITE. 155. Stevia serrata Cav. Ic, IV, 33, t. 355 ; Biol. Centr. Amer. Bot., II, 89. North Mexico, region of San Luis Potosi ; South Mexico, near Tacubaya (Bourgeau). La Cima, pedregal, Aug. 18 (127). 156. Stevia linoides Sob.. Bip. in Linntea, XXV, (1852) 284. The specimens collected are doubtfully referred to this species. La Cima, Sierra del Ajusco, Aug. 18 (128). 157. Senecio Sanguisorbse DC. Prodr., VI, 427; Biol. Centr. Amer. Bot., II, 247. A plant ranging from San Luis Potosi in North Mexico to Real del Monte in South Mexico. La Cima, Sierra del Ajusco, Aug. 18 (139). 1898.] NATURAL SCIENCES OF PHILADELPHIA. 401 158. Dahlia Merckii Lehrn. Delect. Sem. Hort. Hainb., 1839 ; ex Linnsea, XIV, (1840) Litt., 130. La Cima, pedregal, Aug. 18 (118, see ante). 159. Gnaphalium Bourgovii A. Gray in Proc. Amer. Acad., XIX, (1883) 3. The plant is questionably referred to this species. South Mexico. A plant resembling G. cheiranthifollum Lam. La Cima, in railroad cut below the town. Aug. 18 (121). J. Salazar and Sierra de las Cruces. A brief description of this region is given in the introductory geo- graphical portion. The region is one of great exposure to trying and cold winds, we, therefore, find a more truely alpine flora than at La Cima, although the elevations are about the same. This accounts for the presence at Salazar of low, cespitose, or dwarfed species. A ditch along the railroad before reaching Salazar afforded many interesting plants. Las Cruces Valley, the scene of the battle in 1810 between Hidalgo and the Spaniards resulting in a victory for the patriots, yielded a great variety of plants. The level of the mountain meadows composing the valley is about 10,000 feet altitude. Many cold springs, render the district fine botanizing ground. FILICES. 160. Polypodium heteromorphum Hook, et Grew Ic. Fil., t. 108 ; Biol. Centr. Amer. Bot. Ill, 660. Sides of ditches, Salazar, Sierra de las Cruces. Extending from South Mexico to Colombia and Ecuador. Aug. 13 (59). GRAMINEJE. 161. Brachypodium Mexicanum Linn. Hort. Berol., I, 41 ; Biol. Centr. Amer. Bot., Ill, 58L North Mexico, region of San Luis Potosi (Virlet D'Aoust) ; South Mexico, Chapultepec and Tacubaya (Schaffner) ; Chinantla, San Felipe, (Liebmann). Salazar, 10,000 feet, Sierra de las Cruces, Aug. 13 (32). ERIOCAULONACE M. 162. Eriooaulon sp. Boggy places, Salazar, Sierra de las Cruces, 10,000 feet, Aug. 13 (50). 402 PROCEEDINGS OF THE ACADEMY OF [1898. OOMMELINACEJE. 163. Weldenia Candida Schult f. in Flora, XII, (1829) 3t., 1A. ; C. B. Clarke in DC. Monogr. Phanerog., Ill, 319 ; Biol. Centr. Amer. Bot., Ill, 396. South Mexico, between Chico and Real del Monte (Ehrenberg), Nevada deToluca (Karwinski), Cuesta de Catinga (Schiede) ; Gua- temala, Volcan de Agua at 14,000 feet (Hartweg). " Yerba de la rata." At base of Abies religiosa, Salazar, Sierra de las Cruces, 10,000 feet, Aug. 13 (13). 164. Commelina sp. Salazar, 10,000 feet, Aug. 13 (17a). 165. Tradescantia sp. Salazar, 10,000 feet, Aug. 13 (24). IRIDACEJE. 166. Sisyrinchiuin Schaffneri S. Wats, in Proc. Amer. Acad., XVIII, (1883), 160 ; Biol. Centr. Amer. Bot., Ill, 330. North Mexico, region of San Luis Potosi, (SchafFner, Parry & Palmer). Salazar, Sierra de las Cruces, 10,000 feet, Aug. 13 (26). URTIOACE^. 167. Urtica Breweri S. Watson in Proc. Amer. Acad., X, (1875), 348. Salazar, 10,000 feet, Aug. 13 (56). PORTULACACE^l. 168. Claytonia perfoliata Donn. Ind. Hort. Cant.,25, ex. Willd. Sp., PI., I, 1,186; Bot. Mag., t. 1,336 ; Biol. Centr. Amer. Bot., I, 80. Temperate North America to South Mexico. An annual succu- lent herb, serving for salad and also for spinach. The Indians of Mexico, eat it raw. " Qualite de venado." Salazar, Aug. 13 (55). OARYOPHYLLACE^. 169. Arenaria alsinoides Willd. ex Schlecht in Ges. Naturf. Fr. Berl. Mag., VII, (1813), 201. A, lanuginosa Rohrb. in Mart. Fl. Bras., XIV, ii, 274. Common from North Carolina to Mexico, Central America, Peru and Bolivia also in the West Indies. Salazar, Aug. 13 (48). 170. Arenaria decussata AVilld. ex Schlecht in Ges. Naturf. Fr. Berl. Mag., VII, (1813), 212; Biol. Centr. Amer. Bot., I, 70. A dwarf alpine plant collected at Salazar, 1-2 inches high. North to South Mexico. Salazar, Aug. 13 (27). 171. Cerastium viscosum Linn. Sp. PI. 437. C. glomeratum Thuill, Fl. Par. ed., II, 226. Salazar, 10,000 feet, Aug. 13 (16). 1898.] NATURAL SCIENCES OF PHILADELPHIA. 403 EANUNCULACEiE. 172. Thaliotrum strigillosum Heinsl. Diagn. PI., Nov. 1 ; Biol. Cent. Am. Bot., 1,4. T. Hernandezii Tausch in Presl. ftel. Hsenk., II, 69. South Mexico, rare in ravines among bushes (Schaffner), Tizapan, Valley of Mexico (Bourgeau), Zimapan (Coulter), mountains around Mitla, Oaxaca (Andrieux), between San Miguel and La Jaya (Schiede). The specimens collected by me are doubtfully referred to this species. A plant which is used as a diuretic and for kidney complaints. " El Cozticpatli." Salazar, Aug. 13 (76). 173. Ranunculus stoloniferus Hemsl. Diagn. PI., Nov. 17; Biol. Centr. Amer. Bot., I, 8. North to South Mexico. Salazar, 10,000 feet, Aug. 13 (11). 174. Ranunculus dichotomus Moc. & Sesse ex DC. Syst., I, 288 ; Biol. Centr. Amer. Bot., I, 6. R. orthorynchus Hook. Fl. Bor. Am., I, 21, t. 9. Eecorded from a number of localities throughout Mexico. Salazar, 10,000 feet, Aug. 13 (54). CRASSULACEJE. 175. Sedum Moranense H. B. K. Nov. Gen.et Sp., VI, 44; Biol. Centr. Amer. Bot., I, 397. " Siempreviva." Salazar, 10,000 feet, Aug. 13 (57). ROSACEA. 176. Potentilla candioans Humb. & Bonpl. var. nana Nutt. A plant confined to South Mexico. Its woody roots contain tannin. The plant contributes in a great part to the turf of the region. An alpine xerophyte. Salazar, 10,000 feet, Aug. 13 (72). 177. Fragaria Mexicana Schlecht in Linnsea, XIII, (1839), 265 ; Biol. Centr. Amer. Bot., I, 375. F. vesca Linn. Sp. PL, 494. A strawberry distributed from North Mexico, where it is common in the Sierra Madre to South Mexico. Salazar, Aug. 12 (12). LEGUMINOS.E. 178. Trifolium Schiedeanum S. Wats, in Proc. Am. Acad., XVII, (1882), 339 ; Biol. Centr. Amer. Bot., IV, 25. Distributed from North to South Mexico. Salazar, 10,000 feet, Aug. 13 (64). 404 PROCEEDINGS OF THE ACADEMY OF [1898. 179. Trifolium involucratum Ortega. Hort. Matr., Dec. 33; Willd. Sp. PL, III, 1,372; Biol.Centr. Amer. Bot., I, 232. A plant found in California, Colorado, New Mexico, extending to South Mexico. Salazar, 10,000 feet, Aug. 13 (70). 180. Astragalus didymocarpus Hook. Arn. Bot. Beech. Voy., 334. Salazar, 10,000 feet, Aug. 31 (44). 181. Astragalus reptans Willd. Hort. Ber., II, 88, t. 88 ; Biol. Cent. Am. Bot., I, 266. South Mexico, Tacubaya, Valley of Mexico (Bourgeau) ; Chap- ultepec (Bilimek). Salazar, Sierra de las Cruces, 11,000 feet, Aug. 13 (20). GERANIACEJE. 182. Geranium sp. Salazar, 10,000 feet, Aug. 13 (65). 183. Erodium cicutarium L'Herit. ex Ait. Hort. Kew. ed., I, ii, 414; Biol. Centr. Amer. Bot., I, 161. A plant widely dispersed in the north temperate regions of the Old World, and now exceedingly common in many parts of North America, but supposed to have been originally introduced by the Spaniards. Used as a fodder plant in Europe. Extends from North to South Mexico. "Alfilaria"; "Storksbill"; "Pinclover"; "Pingrass"; "Pin- weed " ; " Filaria " " Filaree " ; "Alfilarilla." Salazar, 10,000 feet, Aug. 13 (14). 184. Oxalis violacea Linn. Sp. PL, 434. Salazar, 10,000 feet, Aug. 13 (69). 185. Oxalis corniculata Linn. var. repens n. var. probably O. repens Thunb., Diss. OxaL, 16: Prod. PL Cap., 82. This plant is found in nearly all (except the colder) parts of the world, varying very much. North Mexico to South Mexico, Guate- mala and Nicaragua. Salazar, Aug. 13 (18). LINACE^. 186. Linum Mexicanum H. B. & K. Nov. Gen. et Sp., VI, 39 ; Bot. Reg., t. 1.326; Biol. Centr. Amer. Bot., I, 143. Abundant in South Mexico. Salazar, 10,000 feet, Aug. 13 (63). EUPHORBIACEjE. 187. Euphorbia campestris Cham. & Schlechtin Linnaa, V, (1830), S4; Biol. Centr. Amer. But., Ill, 92. Collected by a number of botanists in South Mexico. Salazar, Aug. 13 (35). 1898.] NATURAL SCIENCES OF PHILADELPHIA. 405 VIOLACEiE. 188. Viola Grahami Benth. PL Hartw., 35 ; Biol. Centr. Amer. Bot., 1, 50. North and South Mexico. Salazar, Aug. 13 (8, 15). 189. Viola flagelliformis Hems!. Diagn. PI., Nov. 20 ; Biol. Cent, Am. Bot., I, 50. Salazar, 10,000 feet, Aug. 13 (15a). ONAGRACE.S3. 190. Epilobium Bonplandianum H. B. & K. Nov. Gen. et Sp., VI, 95. Salazar, Sierra de las Cruces, Aug. 13 (38). 191. Fuchsia microphylla H. B. & K. Nov. Gen. etSp., VI, 103, Biol. Centr. Amer. Bot., I, 458. Abundant in South Mexico. Growing along irrigating ditches, 11,000 feet. Salazar, Aug. 13 (30). UMBELLIFER^. 192. Angelica Pringlei Coulter & Rose. Salazar, Sierra de las Cruces, 10,000 feet, Aug. 13 (45). 193. Eryngium ranunculoides Benth. PI. Hartw., 38 ; Biol. Cent. Am. Bot., I. 562. South Mexico in mountain pastures, Aganguio (Hartweg). Salazar, in mountain meadows, 10,000 feet, Aug. 13 (50a). 194. Eryngium dilatatum Lam. Encyc, IV, 755. Salazar, 10,000 feet, Aug. 13 (50). ERICACEAE!. 195. Pyrola secunda Linn. Sp. PL, 396 ; Biol. Centr. Amer. Bot., II, 283. South Mexico, peak of Orizaba, 8,000 to 10,000 feet (Liebmann), Desierto Viejo, Valley of Mexico (Bourgeau). Salazar, 10,000 feet, Aug. 13 (34). LOGANIACE^. 196. Buddleia Humboldtiana Roam. & Schult. Syst., Ill, 93 ; Biol. Centr. Amer; Bot., II, 341. From Southwest Texas and Southern New Mexico to Oaxaca. " En las canadas y al margen de los arroyos. Se usa como forraje para las reses" (Ramirez). Salazar on mountain sides, 11,000 feet, Aug. 13 (29). ASCLEPIADACE.SJ. 197. Asclepias sp. Salazar, Sierra de las Cruces, Aug. 13 (46). 406 PKOCEEDINGS OF THE ACADEMY OF [1898. LABIATE. 198. Salvia fulgens Cav. Ic, I, 15, t. 23 ; Biol. Centr. Anier. Bot., II, 556 ; DC. Prodr., XII, 333. South Mexico. Salazar, 10,000 feet, Aug. 13 (62). 199. Salvia nana H. B. & K. Nov. Gen. et Sp.,II, 289 ; Biol. Centr. Amer. Bot., II, 561 ; DC. Prodr., XII, 304. North Mexico to Guatemala. Doubtfully referred to this. Salazar, 10,000 feet, Aug. 13 (71). 200. Stachys coccinea Jacq. Hort. Schcenb., Ill, 18, t. 284 ; Biol. Centr. Amer. Bot., II, 571. Texas to Arizona, North Mexico to Guatemala (Volcan de Fuego, 7,000 feet). Salazar, 10,000 feet, Aug. 13 (42). 201. Stachys repens Mart. & Gal. in Bull. Acad. Brux., XI, ii, (1844), 194; Biol. Centr. Amer. Bot., II, 573 : DC. Prodr., XII, 479. South Mexico, Peak of Orizaba, 9,500 to 11,000 feet (Galeotti, Linden) ; Desierto Viejo (Bourgeau). Salazar, Sierra de las Cruces, Aug. 13 (43). 202. Prunella vulgaris Linn. Sp. PL, 600; DC. Prodr., XII, 410; Biol. Centr. Amer. Bot., II, 570. This species is spread over the whole range of the genus in Europe, Asia, America and Australia. Salazar, 10,000 feet, Aug. 13 (25). SOLANACE^. 293. Physalis lobata Torr. in Ann. Lye. N. York, II, (1826), 226. A. Gray, Synop. Fl. N. Am., II, 233 ; Biol. Centr. Amer. Bot., IV, 75. Colorado, Arizona, Texas — North Mexico, mountains west of Saltillo, Coahuila (Palmer). My specimen is doubtfully referred to this species. Salazar, 10,000 feet, Aug. 13 (51). 204. Solanum tuberosum Linn. Sp. PL, 185. Salazar, away from highway and railroad along an irrigating ditch. 10,000 feet, Aug. 13 (53). (A plant 18 inches high, rough hispid with deep purple flowers, No. 61). SCROPHULARIACEJE. 205. Sibthorpia Pitchinchensis II. B. & K. Nov. Gen. et Sp., II, 390, t. 175; Biol. Centr. Amer. Bot., II, 454. South Mexico, Vera Cruz to Orizaba (Muller), Zirnapan (Coulter), Valley of Mexico (Bourgeau), peak of Orizaba, 9,000 to 12,000 feet (Galeotti, Linden), Cordillera of Oaxaca at 9,000 feet (Galeotti). Colombia to Peru, Bolivia and Argentina. Salazar, Sierra de las Cruces, 10,000 feet, Aug. 13 (47). 1898.] NATURAL SCIENCES OF PHILADELPHIA. 407 206. Castilleja tenuiflora Benth. PI. Hartw., 22; Biol. Centr. Ainer. Bot., 11,463. Salazar, 10,000 feet, Aug. 13 (68). 207. Castilleja Schaffneri Hemsl. Biol. Centr. Amer. Bot., II, 462, tab. LXIII, B., figs. 7-13. A small alpine plant 2 inches high. Salazar, 10,000 feet, Aug. 13 (17). 208. Mimulus luteus Linn. Sp. PL, ed. II, 8S4; DC. Prodr., X, 370 ; Bot. Mag., t. 150, 3,336, 3,363; Biol. Centr. Amer. Bot., II, 449. A variable species common in Western America, from the Aleu- tian Islands and Alaska, through Mexico and along the Andes to South Chili. Also naturalized in some parts of the Old World (Hemsley). Salazar, Sierra de las, Cruces, 10,000 feet, Aug. 13 (65a). 209. Pentstemon campanulatus Willd. Sp. PL, III, 228; DC. Prodr., X,326; Biol. Centr. Amer. Bot., II, 444; Bot. Mag., t. 1,878 ett. 3,884. South Mexico, very common. Salazar, Sierra de las Cruces. In fir forests at about 10,000 feet, Aug. 13 (31). PLANTAGINACE.ffi. 210. Plantago Patagonica Jacq. Ic. PL Rar., II, 9, t. 306; Coll. SuppL, 35. The specimens collected are doubtfully referred to this species. They may be P. Mexicana Link. (Enum. Hort. Berol., I, 121). Salazar, 10,000 feet, Aug. 13 (9). 211. Plantago hirtella H. B. & K. Nov. Gen. et Sp., II, 229, t. 127. A. Gr., Synop". Fl. N. Am., II, 392; Biol. Centr. Amer. Bot., II, 575. Salazar, Sierra de las Cruces, 10,000 feet, Aug. 13 (40). RUBIACEJE. 212. Houstonia Palmeri A. Gray. Proo. Amer. Acad., XVII, (1881-'82), 202 ; Biol. Centr. Amer. Bot., IV, 47. A small alpine plant. Salazar, 11,000 feet, Aug. 13 (23). LOBELIACEJE. 213. Lobelia nana H. B. & K. Nov. Gen. et Sp., Ill, 317, t. 272; DC. Prodr., VII, 379 ; Biol.. Centr. Amer. Bot., II, 268. South Mexico, near Real del Monte and Moran, at about 8,000 feet (Humboldt & Bonpland), Vera Cruz to Orizaba (Muller), peak of Orizaba, 11,000 to 12,500 feet (Linden). A small plant, alpine in habit. Salazar, Sierra de las Cruces, 10,000 feet, Aug. 13 (23). 214. Lobelia fulgens Willd. Hort. Berol., t. 85. Salazar, Aug. 13. Collected also at Lake Xochimilcho (ante). (77). 408 PROCEEDINGS OF THE ACADEMY OF [1898. COMPOSITE. 215. Gnaphalium purpureum Linn. Sp. PL, 854. Salazar, Sierra de las Cruces, 10,000 feet, Aug. 13 (6). 216. Eupatorium Popocatepetlen.se Schlecht. ex Hemsl. Biol. Centr. Am. Bot., II, 99 nomen. North Mexico, region of San Luis Potosi, 6,000 to 8,000 feet (Parry & Palmer); South Mexico, Chiapas (Ghiesbregkt). Salazar, 10,000 feet, Aug. 13 (31). 217. Eupatorium pycnocephalum Less, in Linnaea, VI, (1831), 404. Salazar, 10,000 feet, Aug. 13 (39). 218. Senecio (Cacalia) silphifolia n.sp. A plant resembling greatly in habit our western American Com- pass-plant Silphium laciniatum with large leaves which staud ver- tically at various angles. The plant bears an upright corymb of flowers. Named here tentatively, because, it has been probably named and distributed with Pringle's plants of 1896. Salazar, 10,500 feet in meadows, Aug. 13 (28). Orizaba and Cordoba. Orizaba (4,000 feet) and Cordoba (2,700 feet) on the line of the Mexican Railroad (Ferro-Carril Mexicano) can be treated of together. Orizaba is a town of 15,000 inhabitants, 82 miles from Vera Cruz and 181 miles from the City of Mexico. The town lies in a little valley surrounded by very fine mountains. The peak of Orizaba, however, cannot be seen, save a tiny strip of glittering white over the crest of the Cerro de la Escamela. The other sur- rounding hills are : the Barrego ; the Ranchito de Cristo ; Jala- pilla ; San Juan del Rio ; the Rincon Grande ; and La Perla. The town is composed, for the most part, of low houses with red-tiled roofs; it is crossed by two small streams, and by the little river Orizaba (through a rocky ravine filled with tropical plants), all of which unite near by in the River Blanco, which plunges over a pre- cipice in a cascade in the Rincon Grande. The valley alone was explored botanically during the short time at the disposal of the writer. The several ravines were followed through the town to the outskirts, when circling the town, the fields and copses and woods were investigated for the plants that might be in flower. Most of the larger trees were found to be loaded down with epiphytes, orchids, tillandsias, and mistletoe with several ferns. To one who 1898.] NATURAL SCIENCES OF PHILADELPHIA. 409 for the first time visits a tropical country, the very wealth of the material completely nonplusses him for a time. The region abounds in orchids. Only the smaller forms were collected although many fine large ones were seen. A botanist is at once impressed with the luxuriance of the epiphytic growths. A hasty visit was also paid to the Rincon Grande, where a number of plants were collected within the influence of the spray of the water-fall. Only two hours were spent at Cordoba, between trains, so that only a most hasty and superficial collection of plants was made of the flora of this most interesting tropical region. FILICES. 219. Adiautum Capillus-Veneris Linn. Hook. Sp. Fil., II, 36; Biol. Centr. Amer. Bot., Ill, 607. A plant very widely diffused in temperate regions, throughout the world including the mountains of Mexico, where it occurs up to an altitude of 10,000 feet on the peak of Orizaba. Orizaba, Aug. 27 (363). 220. Polypodium aureum Linn. Hunk. Sp. Fil. V, 16 j Biol. Centr. Amer. Bot., Ill, 655. ' A fern extending from Florida southward in Mexico to Brazil. The specimens collected by me were found in the forks of trees. Orizaba, Aug. 27 (369). 221. Nephrolepis cordifolia Presl. Hook, et Bak. Syn. Fil., 300; Biol. Centr. Amer. Bot., Ill, 652. South Mexico to Brazil and Peru, also in Cuba. Orizaba, Aug. 27 (356). LILIACEJE. 222. Schoenocaulon officinale A. Gray in Benth. PI. Hartw., 29; Biol. Centr. Amer. Bot., Ill, 383. South Mexico to Guatemala and Venezuela. Slopes of El Bor- rego, abundant. Orizaba, Aug. 27 (4,500 feet), (349). ORCHIDACEJE. 223. Cypripedium irapeanum La Llave Lex. Nov. Veg. Desc. fasc, II (Orch. Opusc.) 10 ; Biol. Centr. Amer. Bot., Ill, 307. C. molle Lindl. in Benth., PI. Hartw., 72. South Mexico to Guatemala. Slopes of hills near waterfall in Rincon Grande. Orizaba, Aug. 27 ; flowers yellow, (328). 27 410 PROCEEDINGS OF THE ACADEMY OF [1898. 224. Epidendrum virens Lindl. & Paxt. Flow. Gard., I, (1850-51), 152; Biol. Centr. Amer. Bot., Ill, 242. The living specimens collected and brought home, I doubtfully refer them to this species. Orizaba, Aug. 27 (394). PIPERACE.E. 225. Piper umbellatum Linn. Sp. PI., 30 ; Biol. Centr. Amer. Bot., Ill, 56. South Mexico, southward to Peru and Brazil, also in West Indies. Cordoba, Aug. 26 (346). 226. Piper sp. Orizaba, Aug. 27 (371). CARYOPHYLLACEJE. 227. Silene Armeria Linn. Sp. PL, 420. Orizaba, Aug. 27 (366). ANONACEJE. 228. Anona Cherimolia Miller Gard. Diet. ed. VIII, n. 5 ; Biol. Centr. Amer. Bot., I, 18; Bot. Mag., t. 2,011. Extending from South Mexico to Ecuador and Peru; widely spread in Tropical America. Naturalized in some of the West Indian Islands according to Grisebach. " One of the ' Custard Apples.' This shruL or tree might be tried in frostless forest valleys where the humidity and rich soil will prove favorable to its growth. It is hardy in the wildest coast regions of Spain, also in Chili. In Jamaica it is cultivated up to 5,000 feet." (Mueller). Orizaba, Aug. 27 (380). LEGUMINOS^E. 229. Mimosa albida H. & B. in Willd. Spec., IV, 1,030. Cordoba, Aug. 26 (350). " Sensitive Plant." MALVACEJE. 230. Malvaviscus arboreus Cav. Diss., Ill, t. 48 ; Biol. Centr. Amer. Bot., I, 118. North Mexico to Guatemala, Panama ; also common in the West Indies including Cuba. Orizaba, Aug. 27 (362). CACTACEiE. 231. Cereus triangularis Mill. Gard. Diet. ed. VIII, n. 9; Bot. Mag., t. 1,834; Biol. Centr. Amer. Bot., I, 547. Orizaba, Aug. 27. 1898.] NATURAL SCIENCES OF PHILADELPHIA. 411 232. Phyllocactus grandis Lem. in Fl. des Serres, III, (1847), 255, verso. Mexico, region of Orizaba, Honduras. Orizaba in Rincon Grande, Aug. 27 (373). MYRTACEJE. 233. Psidium Guajava Linn. Sp. PI., 470 ; Biol. Centr. Amer. Bot., I, 406. From the West Indies and Mexico to South Brazil. " This handsome evergreen and useful bush should engage universal atten- tion anywhere in warm lowlands, for the sake of its aromatic whole- some berries, which attain the size of a hen's egg, and can be converted into a delicious jelly. The pulp is generally cream col- ored or reddish, but varies in the many varieties which have arisen in culture, some of them bearing all the year round. Propagation is easy from suckers, cuttings or seeds. This big shrub is easily held under control in extra-tropic countries, but in the warmest and moist- est tropical regions it may become irrepressible, as it spreads readily from suckers, and gets disseminated by birds and cattle easily." (Mueller). Orizaba, Aug. 27 (367). ARALIACEJE. 234. Dendropanax arboreum Decne. & Planch, Rev. Hort., ser. IV, iii (1854), 107. This species has a wide range in the West Indies and tropical South America. " Vibona," (Cuba). Orizaba, Aug. 27 (353). ASCLEPIADACEJE. 235. Gonolobus eriantnus Decne. in DC. Prodr., VIII, 592; Biol. Centr. Amer. Bot., II, 331. The specimens collected by me are more hairy than those distrib- uted by Pringle. It is possible that they are to be referred to G. atratus Gray with broader leaves, but the same pubescence. South Mexico to Guatemala. Orizaba, Aug. 27 (364). VERBENACE^. 236. Duranta Plumieri Jacq. Select. Am., 186, t. 176, f. 76 ; Biol. Centr. Amer. Bot., II, 538. A shrub 8 to 12 feet high in rough rocky woods, not uncommon from Florida through South Mexico to Peru, Brazil and in the West Indies. " Violetina " (Cuba). Orizaba, Aug. 27 (352). 237. Lantana camara Linn. Sp. PL, 874 ; DC. Prodr., XI, 598 ; Biol. Centr. Amer. Bot., II, 527. Georgia, Florida, Texas, Mexico, and generally dispersed in tropical South America and West Indies. " Filigrana " (Cuba). Orizaba, Aug. 27 (358). 412 PROCEEDINGS OF THE ACADEMY OF [1898. CUCURBITACEJE. 238. Sechium edule Swartz. Fl. Ind. Occ, II, 1,150 ; Biol. Centr. Anier. Bot., 1, 491. " The large, starchy root of this climber can be consumed as a culinary vegetable, while the good-sized fruits are also edible. The fruit often germinates before it drops. The plant bears, even in the first year, and may ripen one hundred fruits a year. Cultivated up to 5,000 feet in Jamaica" (Mueller). South Mexico, Santa Anita near Mexico (Bourgeau), Orizaba (Botteri), valley of Cordova (Bourgeau); Panama, without locality (Seemann) ; West Indies and Tropical South America. " Chow- Chow" (Jamaica); " Chocho," "Chayota" (Mexico). COMPOSITJE. 239. Senecio grandifolius Less, in Linnaea, V, (1830), 162 ; Biol. Centr. Anier. Bot., II, 240. South Mexico, region of Orizaba (Botteri, Bourgeau), valley of Cordova (Bourgeau), Montecinos, Vera Cruz (Linden). Orizaba, Aug. 26th (360). ADDENDA (with families omitted). 240. Thalia dealbata Fras. Thai, dealbata, 1. 1 ; Bot. Mag., t. 1,690; Biol. Centr. Anier. Bot., Ill, 310. Aloug ditches of Mexican Central R. R., near Guadalajara. 241. Nymphaea gracilis Zucc. in Abh. Akad. Muench., I (1832), 362; Biol. Centr. Amer. Bot., I,. 25. "A Mexican species of great merit, has large, handsome, star- shaped white flowers, which are borne on stout stems well above the foliage. It is worthy of note as being the only white day-blooming tropical or tender species ; a very vigorous plant, free-flowering, the flowers possessing a delicate fragrance, resembling Lily of the Val- ley" (1897), Tricker, The Water Garden, p. 90, fig. on p. 91 and pi. III. South Mexico, lakes near Oaxaca, 5,000 feet (Galeotti), Mex- ico (Karwinski), ditches at Tacubaya, Valley of Mexico (Bourgeau), Aguas Calientes (Hartweg). In ponds along Mexican Central R. R. near Guadalajara. 242. Talinum Greenmanii Harsbberger in Bull. Torrey Bot. Club, XXIV, 183,Apr. 24, 1897, Plate 299, Fig. 4. Volcanic gravel, Sierra del Ajusco, Mexico, 8,500 feet. Possibly it is T. humile described by E. L. Greene. Pringle Plantce mexicance, 1898.] NATURAL SCIENCES OF PHILADELPHIA. 413 No. 6,472. Named in honor of Jesse Moore GreenmaD, of the Gray Herbarium, Cambridge, Mass. 243. Agave Americana Linn. Sp. PI., 323. A plant extensively cultivated throughout Mexico for its fibre and for the juice which yields, upon fermentation, the national bev- erage, pulque. 244. Taxodium mucronatum Tenore in Ann. Sc. Nat. ser. Ill, xix, (1S53), 355. A tree found reaching gigantic girth in several parts of Mexico. The grove of Mexican cypresses below the Castle of Chapultepec being noted for the size of the individual species composing it. Two notable trees are found in it, one 19} feet in diameter, the other, the tree of Montezuma, 14 feet in diameter. Another gigantic specimen is found at Tule on the road from Oaxaca to Guatemala, circumfer- ence, five feet from ground, 146 feet; longest diameter, 40 feet; shortest diameter of the trunk, 20 feet. This tree was also met with at Las Canoas on the Tampico branch of the Mexican Central Rail- road. 'Ahuehuete." , 245. Zea Mays Linn. X Euchlaena Mexicana Schrad. Zea Mays Linn., Sp., pi. 971. Euchlaena Mexicana Schrad. Ind. Sem. Hort. Gotting (1832). — Cf. Linnaea viii (1833) Litt. 25. The hybrids of these two plants throw considerable light upon the origin of our cultivated maize. I would refer the student to several papers upon this subject by the writer, as follows: 1. Maize: A Botanical and Economic Study. Contrib. Botan. Lab. University of Penna., I, pp. 75-202, with 4 plates. A Spanish translation of the entire paper appeared in Mexico, entitled "El Maiz : Estudio Botanico y Economico" (1894), pp. 164. 2. Fertile Crosses of Teosinthe and Maize. Garden and Forest, IX, p. 522. 3. Notes on the Hybrid of Maize and Teosinthe. Garden and Forest, X, p. 48. 4. The Uses of Plants Among the Ancient Peruvians. Bull, of the Museum of Science and Art, University of Penna., I. 414 PROCEEDINGS OF THE ACADEMY OF [1898. FOSSIL MOLLTJSKS AND DIATOMS FROM THE DISMAL SWAMP, VIRGINIA AND NORTH CAROLINA ; INDICATION OF THE GEOLOGICAL AGE OF THE DEPOSIT. BY LEWIS WOOLMAN. WITH NOTES ON THE DIATOMS. BY CHARLES S. BOYER. During the winter of 1897-98 the Dismal Swamp Canal was widened and deepened, and the level of the central portion lowered so as to dispense with the middle two of the four locks heretofore in use. The work was done by the McManus Construction Company of Philadelphia, steam rotary dredging machines being used in exca- vating. These dredges brought up from the bottom, at points both south and north of the Virginia-North Carolina boundary, large numbers of marine mollusks. Through the appreciative interest in scientific matters of M. Homer, Secretary and Treasurer of the Con- struction Company, we have been furnished on three occasions with specimens of these shells, which he specially and personally col- lected on his visits to the field of operations. It is the purpose of this paper to put on record the species of these shells and also of the marine diatoms which were associated with them in the same matrix, and to indicate, though perhaps ten- tatively, from a study of both the macroscopic and microscopic fos- sils, the geological age of the bed from which they were obtained. The Dismal Swamp Canal connects on the south at a point near South Mills, N. C, with the headwaters of the Pasquotank River, a tributary of Albemarle Sound, and on the north at a point near Deep Creek with the waters of the south branch of the Elizabeth River, a tributary of the James River and the Chesapeake Bay. The general direction of the canal between these two points is north- ward, with, however, a decidedly obtuse angled bend, or bow, to the westward, the angle being near Drummond Lake, from which a feeder canal brings the water from the Jake into the main canal. This feeder was also deepened. M. Homer states that the shells furnished by him were obtained from the following localities : — 1898.] NATURAL SCIENCES OF PHILADELPHIA. 415 1st. — A point on the main canal in North Carolina, two to three miles south of the Virginia boundary. 2d. — A point on the main canal in Virginia, about five miles north of the feeder, or four miles north of Wallaceton, a small Post Office and settlement on drained land near the centre of the swamp. 3d. — A point about midway of the feeder, say one and one-half miles west of its junction with the main canal. A noticeable peculiarity, as stated by M. Homer, is that the collections from the main canal, from both the Virginia and North Carolina localities, contain great numbers of the large conch, Fulgur carica, while this shell is wanting in those thrown out from the feeder. Here, however, the oysters, Ostrea virginiea, are exceed- ingly numerous, and many of them are of extra large size, one speci- men in the possession of M. Homer measuring ten inches in length and four and one-half inches in width. But few specimens, comprising only three species, were brought from the locality south of the Virginia-North Carolina line. M. Homer, however, states that the shells seemed as varied in form and as plentiful there as north of Wallaceton. In one lump of clay matrix, about the size of a walnut, obtained from the bottom of the dredgings north of Wallaceton, we discov- ered, on a preliminary microscopic examination, a very few diatoms, and a few, though perhaps a slightly larger number of sponge spicu- les. A separation and cleaning of the diatoms from this lump of clay was made by a fellow member of the Academy, John A. Shulze, after which the forms were identified by another member, Prof. C. S. Boyer. The mollusks were jointly identified by Prof. H. A. Pilsbry of the Conchological Section of the Academy and C. W. Johnston, Curator of the Wagner Free Institute of Science. Below we tabulate the mollusks according to their range in geo- logical time into three columns headed Miocene (M), Pliocene (P) and Recent (R) — under Recent are included both Pleistocene and now living forms. On the right, in two additional columns, we note the occurrence of such of the forms as have been found in the Croa- tan, N. C, and the Waccamaw, S. C, beds, both of which contain a somewhat similar molluscan fauna. The geological range, as noted in the first three columns, we take from Dr. W. H. Dall's " Tables of Species " from the Waccamaw and the Croatan beds.1 1 Transactions of the Wagner Free Institute of Science, Vol. Ill, Part 2, pages 210 to 215. 416 PROCEEDINGS OF THE ACADEMY OF [1898. The Croatan beds are in North Carolina, about 120 miles slightly west of south of the Dismal Swamp, and about eighteen miles from the nearest point on the coast. They are on the northern border of a similar swamp area on the southern side of the Neuse River, and are about fifteen miles below Newbern. Both the Croatan and the Dismal Swamp shell localities are approximately 75 or 80 miles eastward of the rocks of the Piedmont plateau, which rocks bound the inland border of the less consolidated beds of the Atlan- tic Coastal plain. The two localities occupy a similar position both geographically and stratigraphically. The Waccamaw beds are in the extreme eastern part of the State of South Carolina, and are exposed along the banks of the Wacca- maw River from some four miles, to about 18 miles above Conway. They are on low ground, and are also on the western side of another of the swamp areas that occur on the seaward margin of the coastal plain from Cape May County, N. J., to South Carolina and Georgia. Geographically, they are similarly situated to the Croatan and the Dismal Swamp localities. Fossil mollusks from the Croatan and the Waccamaw localities have been carefully studied and listed I y Dr. W. H. Dall, who refers both beds to the Pliocene. The fauna, however, when considered with reference to the percentage of recent over extinct forms, would indicate that the Croatan beds were slightly the younger of the two deposits, there being, according to Dr. Dall, 83 per cent, of recent forms in the Croatan and only 70 per cent, in the Waccamaw beds. In summing up, Dr. Dall says " the Croatan beds are obviously newer than those of the Waccamaw, yet when compared with the admitted Pleistocene beds of South Carolina" such as those of Sim- mons Bluff, the presence on the Neuse " [the locality of the Croatan beds] " of 41 out of 90 species, which have not been known later than the Pliocene, forbids us to regard the fauna as later than Plio- cene." In the study of the mollusks from the Dismal Swamp Canal the writer has had the advantage of some correspondence with Dr. W. H. Dall and of consultation with Prof. H. A. Pilsbry and C. W. Johnson, the latter of whom has collected a full series of shells from the Croatan beds, and a like series from the Waccamaw beds, both of which collections are now displayed in the Museum of the Wagner Free Institute of Science of Philadelphia, and with which the shells from the Dismal Swamp have been carefully compared. 1898.] NATURAL SCIENCES OF PHILADELPHIA. 417 The three species previously noted as having been collected from the bottom of the old south level near South Mills, N. C, were Uro- salpinx cinerea, Fulgur carica and Ostrea virginica — the elevation of the surface at this point being about 11 feet. All the forms, however, listed below, excepting Urosalpinx cin- erea Say, were obtained from a locality along the Deep Creek level of the Old Canal, at a point four miles north of Wallaceton, Va., and from a depth of about ten feet, the elevation of the surface being about sixteen feet. The Deep Creek level is next north of the sum- mit level of the old canal, the latter having an elevation of about twenty feet. Ostrea virginica, generally much larger and more numerous than at South Mills or at north of Wallaceton, was likewise brought up in the dredgings from the bottom of the feeder leading from Drum- mond Lake, say at approximately ten feet below the surface level, which, at the point under consideration, is about twenty feet above tide, the elevation of the surface of the lake being, according to a survey made by the U. S. Engineers during the winter of 1895-1896, 22TVV feet. Mollusks from the base of a low escarpment on the western bor- der of the swamp near Suffolk, Va., and near the Jericho Canal, which leads north-westwardly from Lake Drummoud to the Nanse- mond River, have been noted by Prof. N. S. Shaler. After listing the species as identified by Dr. W. H. Dall, he says: "Traces of this same deposit occur a few miles south of Suffolk, and I suspect the existence of similar beds near Elizabeth City. From certain comminuted fragments taken from the bottom of the main Dismal Swamp Canal, it seems to me not improbable that the beds were touched in making that excavation. I am, therefore, disposed to believe that the foundation rocks beneath the swamp district consist mainly of the beds indicated by the foregoing list of fossils."2 Prof. Shaler thus indicates fossil beds which the recent deepening of the Dismal Swamp Canal has abuudantly verified, though very few of the species in Prof. Shaler's collection and our own are the same ; and yet, as will be seen further on, upon analyzing the forms in the two collections, they tell a similar geological tale. We now insert tables of the mollusks from the Dismal Swamp and the Jericho Canal localities. 2 Tenth Annual Eeport U. S. Geol. Survey, page 316. 418 PROCEEDINGS OF THE ACADEMY OF [1898. TABLE OF SPECIES OF MOLLUSKS DREDGED FROM THE DISMAL SWAMP CANAL IN NORTH CAROLINA AND VIRGINIA. Mollusks. Area limula Conr., one Area plicatura Conr., var. sublineolata D'Orb., numerous Corbula eontraeta Say Cytheiea convexa Say = ( C. say ana Conr.) Midi nia (Maetra) lateralis Say Nit eula proxima Say « Venus mercenaria Lara'k Lueina crenulata Conr Olivella nitidula Dillw Polynices [Natiea) [ATeverita) duplicata Say... Tornatina [Bulla) canalieulata Say Nassa obsoleta Say, few Divarieella [Lueina) quadrisulcata D'Orb Cezcum cooperi Smith Ostrea virginiea Gmel Crepii/ula plana Say Eupleura caudata Say Fulgur canaheulatum S'ay , one Fulgur carica Gmel., numerous Nassa trivitta t a Say, numerous Scala lineataSaj Turbonilla reticulata Ads Spisula [Maetra) solidissima Dillw Tellina tenera Say Solen americanus Gmel Urosalpinx cinerea Say Coral. Astrangia danae Agas Range in time. M. P. R. x X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X X a 5 * O (-, o o o 0 o o o o o o 0 o o o o o o o 33 o jS CO a> -a a ~3 is 93 £ 33 0 o o 0 0 o 0 0 0 0 0 0 o o o o o For comparison with the above we tabulate in a similar manner the list of fossils obtained by Prof. N. S. Shaler, from the north- western part of the Dismal Swamp, near Suffolk, and identified by Dr. Dall. We take the list from Prof. Shaler's monograph on the Dismal Swamp in the Tenth Annual Report of the United States Geological Survey, page 315. 1898.] NATURAL SCIENCES OF PHILADELPHIA. 419 TABLE OF MOLLUSCAN SPECIES FOUND IN BEDS EXPOSED BY A ROAD CUTTING NEAR THE JERICHO CANAL, TWO MILES EAST OF SUFFOLK, VA. Area incile Conr Crassatella undnlata Say Mactra congesta Conr Anachis (Columbella) avara Say Turrit ella apical is Hp. (var. ) Pecten eboreus Conr Abra aequalis Say Callista convexa Say (— C say ana Conr.) Eryphvla lunata Conr Gouldia cerina Ad Leda acuta Conr Lucina crenulata Conr Yoldia limatula Say Dosinia e/egans Conr Ostrea virginica Gmel Pecten exasperatus Sowb Crepidula convexa Say Liomesus stimpsonii Dall Turbonilla inierrupta Totten Cadulus caro/inensis Bush Cardium islandicutn Lin Chione albida Gmel Nucula tenuis Mtg Tellina tenia Say Tellina modesta Verrill Sea/aria clathratula Adams Ethalia Sp. ?fragm Eulima Sp. ? Balanus Sp. ? Range in time. M. P. R. x X X X X X X X X X X X X X X X X X a - o CO C T3 a> -Q a OS a o o O o 0 0 0 0 o 0 & CO 41 a < -a 2 ■J 0? O o o 0 0 o o Of the 26 species of mollusks from near Wallaceton, 17 occur at both Croatan and Waccamaw, 2 others occur at Croatan and not at Waccamaw, and still 2 others at Waccamaw and not at Croatan, while 5 have not been recorded at either of these two localities. Of the 26 specifically identified out of the 29 forms from near Jericho, 6 occur at both Croatan and Waccamaw, 1 occurs at Croa- tan only, and 3 at Waccamaw only, while 16, more than half of which are recent, have not been noted at either of these localities. 420 PROCEEDINGS OF THE ACADEMY OF [1898. In the lists above there are but 3 species occurring injboth locali- ties, viz. : Cyiherea convexa, Liicina crenulata, and Ostrea virginica. Adding the numbers in the two lists and deducting these three, since they have been counted twice, we find there are, altogether, 52 molluscan forms, of which 3 are not specifically identified. Analyz- ing the remaining 49, we find their numbers range in geological time as follows : — M. M. & P. P. M. P. & K. P. & R E. | From near Wallaceton 3 3 3 2 1 1 1 11 7 9 6 4=26 8=26 Deduct common to both 3 18 2 15 1 12=52 3 Tots 3 1 16 14 12=49 fr ich it will be seen that there are .iocene and pre-Pliocene forms 7 species. Ranging from Miocene to Recent 16 species. Both Pliocene and Recent 14 species. Recent, including Pleistocene 12 species. Judging from these proportionate figures alone, which show 42 forms still living, out of a total of 49, the writer would be inclined to assign the age of the beds from which these fossils were obtained as not earlier than late Pliocene time, while it may even possibly belong to Pleistocene time. We may, however, more particularly note other reasons for this conclusion as to age. Twenty-six, or fully one-half of the shells specifically identified, clearly have a post-Miocene aspect, including two forms, Fulgur carica and Ostrea virginica, which are the most numerous of the col- lection. The specimens of F. carica present a peculiarity of sculpt- ure which distinguishes them from the shells now living upon the coast; the surface being densely scored by fine crimped or undulat- ing spiral stria?, in fully adult, large individuals. In recent shells of similar size such striation is nearly obsolete or wholly wanting, even when the superficial coat has not been removed by erosion. 1898.] NATURAL SCIENCES OF PHILADELPHIA. 421 Sixteen other forms have a persistent range from the Miocene through the Pliocene and Pleistocene periods down to the present time. If we include these 16 as representatives of recent time, we have, as noted above, 42 ; or, as pointed out by Dr. Dall in a letter from which we quote, " nearly all the species as recent." One other form, Area lunula, is usually considered distinctively Miocene, but its presence may be accounted for by considering it as an introduction from the underlying Miocene beds, which are prob- ably not over 50 feet from the surface in this region. Bearing upon this, the writer may say that he has in his possession artesian well borings recently made at Old Point Comfort and Norfolk, Va. At Old Point Comfort, at the depth of 50 feet, were a number of shells, among them such Miocene forms as Dosinia acetabulum and Pecten madisonius, while at Norfolk there were obtained, at the depth of 105 feet, a fragment of Pecten madisonius, at 115 feet a perfect shell of Gnathodon clathrodon, and at 175 feet a fragment of Pecten ehoreus. Respecting another form in the DismabSwamp bed, Arc. >lica- tura, or perhaps a variety thereof, Dr. Dall says, after an ex ina- tion by him of a number of specimens of this species which ~d sent him : "The Area you send is one which occurs in the ] County Natural Well, North Carolina, and which was namK. j Conrad Area lineolata ; but as there was already a species of this name, D'Orbigny re-named it sublineolata. It appears to be a mu- tation of J., plicatura, to which I have referred it in my (MS.) work on the Tertiary Areas of the United States. There was one Plio- cene species in the fossils from the Jericho Canal,3 and as the Du- plin beds are at the very top of the Miocene, it would not be strange if A. sublineolata overlapped." Bearing still further upon the entire subject, we further quote Dr. Dall from the same letter : — " The species from your list* are all recent except Area limula [and Area sublineolata'], but some of them are not now found so far north. Now we know that in Pliocene times some northward ad- vance was made by the warm water species, such as Gnathodon and Gyrena. There are too many recent species (assuming that the fauna is not a mechanical mixture of shells of different ages) for the refer- 3 This has reference to the bed near Suffolk, the forms from which appear in the second of the preceding lists. 4 Reference is here made only to the first list, that from near Wallaceton. 422 PROCEEDINGS OF THE ACADEMY OF [1898. ence of this fauna to the Upper Miocene — and we know that the ex- tinct species [A limula and A. lineolata] are not quaternary even in Florida — so, subject to the above assumption, I think we shall have to regard it as Pliocene. * * * * The Croatan beds are dis- tinctively Pliocene, but these are more like the contact between the southern Pliocene and a more northern cold water fauna." Corroborative of the views already advanced as to the age of this bed is the following, written by Prof. N. S. Shaler respecting the mollusks listed above from near the Jericho Canal : " The species determined by W. H. Dall, paleontologist of the U. S. Geological Survey, indicates in a general manner that the beds are of Pliocene age. Of the 29 species that appear in my collection, 24, according to Dr. Dall, belong to living forms and 5 are extinct. The extinct species are found in the so-called Pliocene of Florida, South Car- olina and Virginia. There can be no question the deposit is of pre- glacial age."5 We now consider the evidence presented by the diatom flora which we think corroborates that presented by the mollusks for rea- sons which we shall note after the introduction of the following state- ment by Charles S. Boyer, A. M., Made by him after a careful ex- amination of a number of mounts prepared from the material which had been reliably cleaned, as already stated, by John A. Shulze, and to which we are well assured there has been no admixture of di- atoms from any other source : — "The following list includes all the forms, 31 in number, found in the slides of the Dismal Swamp material except a few fragments which were too small for accurate determination. "In the middle column is noted the relative frequency and rarity of some of the forms in comparison with the rest as seen in the strewn mounts : — " Of the above forms all but four are strictly marine. The ex- ceptions are Navicula major and Stauroneis Phoenicenteron, which are fresh water, Campylodiscus Echeneis which is both brackish and fresh water, and Melosira crenulata var. antique/,, which is possibly also fresh water. " I think I have named all on the slides at hand, except probably one or two forms of Coscinodiscus and Navicula, which were in frag- ments. 5 Tenth Annual Report, U. S. Geol. Survey, page 315. NATURAL SCIENCES OF PHILADELPHIA. 423 1898.] " Of the 31 named, 2, Actinoptychus Heliopelta and Aulacodiscus Rogersii are distinctly Miocene ; 4, Coscino discus robustus, Stephano- pyxis aculeata and Corona, and Triceratium semicirculare are quite Common Rare Common Not uncommon Not uncommon Common Miocene and Recent Miocene only Miocene and Recent Miocene only Miocene and Recent Miocene and Recent Biddulphia Rhombus (E.) Wm.Sm Miocene and Recent Miocene and Recent Fossil in Deposits later than Miocene also Recent. Brackish and Fresh Water. Later than Miocene also Recent Miocene and Recent Miocene and Recent Miocene and Recent Miocene and Recent Miocene and Recent Miocene Miocene and Recent Recent Although var. antiqua Cox is found in the Miocene Later than Miocene Miocene and Recent Miocene and Recent Miocene and Recent Melosira crenulata var. ambigua Grun. Fossil in Hungarian deposit (Mio- cene ?), as, however, there are numer- ous varieties which are recent, this Fresh Wrater ? Recent, marine Miocene to Pleisto- Plagiogranuna Gregorianum Grev.. . cene, also Recent Fresh Water. Miocene and Recent Miocene and Recent Stauroneis Pkcenicenteron (Nitzsch) E... Later than Miocene, also Recent Fresh Water. Miocene Miocene Miocene and Recent Miocene characteristic of that period, while of the remaining 25, onl)r 4, Campy lodiscus Eeheneis, Cerataulus turgidus, Eupodiscas radiatus 424 PROCEEDINGS OF THE ACADEMY OF [1898. and Stauroneis Phoenicenteron can be considered as distinctive of later deposits. " In general, therefore, it may be said that the deposit can be con- sidered as a mixture of Miocene and later deposits, though the lat- ter need not necessarily have been so very recent." From an examination of the above list of diatoms the present author would classify them as follows : Six forms characteristically Miocene, 19 forms that have survived from Miocene to present time and are now living, and 4 either Pliocene or Pleistocene, or both, and also now living. These 4 are the same as those noted above by C. S. Boyer as distinctive of deposits later than Miocene. If the 19 survivals belong to present time, there are 23 that may be considered recent, or comparatively so. Respecting the ex- clusively Miocene forms it is probable that these have been brought down in post-Miocene times by the James River in its passage over the original beds from Richmond southeastward. It is probable also that some of the individuals of perhaps each of the 19 species having the more cosmopolitan range were also similarly introduced. We are confirmed in this view by the occurrence among the char- acteristic Miocene diatoms of Actinoptychus Heliopelta, a form which the writer has frequently found heretofore both in outcrops and in well borings, but always at or below the base of the great 300 to 400 feet Miocene diatomaceous clay bed of the Atlantic Coastal Plain. In Maryland it occurs at the base of this bed in well bor- ings at Crisfield and in outcrops at and near Nottingham on the Patuxent River. In Virginia it has been found in outcrops at Petersburg and Bermuda Hundred. In New Jersey, owing proba- bly to a thickening of the basal beds of the Miocene, it occurs some distance below the main diatom bed. It has thus been found in out- crops near Shiloh and in well borings at Asbury Park and Wild- wood. At the latter place it was found in a thin seam of clay about 250 feet below the bottom of the great diatom bed. In each instance just cited its position is at or very near the base of the Miocene, either resting directly upon or only a short distance above green- sands of Eocene Age. Many other borings have been made in New Jersey through or nearly through these beds, from which the writer has had complete series of specimens every 10 to 20 feet apart, all of which he has examined, but in none of them has he ever found A. Heliopelta stratigraphically higher than near the base of the Mio- cene. Now the diatom bed outcropping at Richmond, Petersburg 1898.] NATURAL SCIENCES OF PHILADELPHIA. 425 and vicinity has been found by the writer in the Norfolk well bor- ing at between the depths of 585 and 625 feet, while the continuation upward of the same clay contained sponge spicules up to about 400 feet from the surface. No diatoms or sponge spicules were found higher in this well excepting between the depths of 25 feet and 65< feet, where a stratum, probably the equivalent of the Dismal Swamp bed, contained these same micro-organisms, though, as in the Dis- mal Swamp deposit, very sparingly. The Miocene beds at Bermuda Hundred and Petersburg are rich in diatoms, and especially so ii* A. Heliopelta, and since the diatoms in the Dismal Swamp deposit were exceedingly meager, (perhaps not one per cent, of the entire matrix), and since A. Heliopelta and other Miocene species were scantiest in numbers of all the contained forms, we cannot, in view of all the facts, consider that the introduction of these Miocene forms has been by other than mechanical means in post-Miocene times. At what period that subsequent time was, three of the more recent forms, Campy lodiscus Echenels, Cerataulus turgidus and Stauroneis Phoeni- eenteron, shed much light. We will now particularly notice each of these forms. In a mass of brick clay from a low terrace at Bridgeton, N. J., which terrace is assigned by the New Jersey State Geological Survey report to a very recent geological phase of the gravels of that State, the writer found a very considerable number of diatoms not at all Miocene in aspect, and among them a large number of the same species of Cerataulus. Respecting Campylo discus Eeheneis it may be stated that this form has been recorded as living principally in brackish waters the world over, though Prof. C. S. Boyer informs the writer that he has found it in a fresh water reservoir at Philadelphia, supplied from the Schuylkill River. Though not, however, heretofore recorded, so far as we are able to learn, as fossil, yet the writer has so seen it in a low level clay from near Buckskutem on the Maurice River, below Millville, N. J., the stratigraphical position of which is the equiva- lent of the Bridgeton clay above referred to. On a map of the surface formations of New Jersey in the annual' report of the geological survey of that State for 1897 there is shown- a low level formation on the shores of Raritan Bay and thence border- ing the Atlantic Ocean from Sandy Hook to the Cape May peninsula,, which it either entirely covers or nearly so, and thence extending up the Delaware River nearly to Trenton. This low lying terrace, 28 426 PROCEEDINGS OF THE ACADEMY OF [1898. which is stated in the text to have an elevation of 30 to 50 feet, ex- tends inland along the courses of the following streams : some 20 miles up the Mullica and the Great Egg Harbor Rivers, about 25 miles up the Maurice River, and some 10 miles up the Cohansey River. These measurements were made in a direct line from the mouths of the rivers and not by following the winding courses thereof. The surface deposit of this terrace has been named by Prof. R. D. Salisbury the Cape May Formation. He describes it as a 'thin body of loam, sand and gravel of lesser age than any " of the surface formations of the State described in the same paper " except pos- sibly the drift of the last glacial epoch." He further says : "The strict contemporaneity of this formation with the drift of the last glacial epoch is not established, but it is probably at least partly contemporaneous with it, though its later portions may be still younger."6 To this formation belong the diatom clays noted in the preceding paragraphs as at Bridgeton and Buckshutem. Stauroneis Phoenicenteron has never been seen by the writer in any of the numerous specimens of Miocene diatomaceous clays which he has examined during the past ten years, nor has it, so far as he has been able to learn from consultation of the literature relating to it, been recorded by others as occurring in beds of that age. It has, however, a world wide distribution in freshwater deposits of decidedly later age. Ehrenberg, in the Atlas of his Mikrogeologie, notes it in various sands and black, white and gray earths at numer- ous localities (named below) most of which the writer would char- acterize from their position stratigraphically and geographically as decidedly post-miocene and some of them as clearly glacial and post-glacial. Thus Ehrenberg lists this diatom on page 19 of his Atlas as occurring in various earths and at different places, as follows : — in lake mud from Loka, Sweden ; in Bergmehl from Degenfors and Lillhaggsjohn, Sweden, also from Santa Fiora, Italy, and from the south point of Tierra del Fuego, S. A.; in Bliitterkohl from Westerwalde, Prussia; in white earth from Guatemala; in Kiesel- guhr from Andover, Pelham and Wrentham, Massachusetts ; from Ceyssatt, France ; from Down, Mourne Mountains, Ireland ; from New Hampshire and from Earlton, Nova Scotia ; in white marl (Mergee) ; from Farmington, Conn.; in Meteorpapier, from Rauden, Prussia; in tripoli and polishing powder, from Moscow, Russia; and in Weisenpapier, from Freiberg, Saxony. Annual Report Geol. Survey of N. J., 1S97, page 19. 1898.] NATURAL SCIENCES OF PHILADELPHIA. 427 It has also been found fossil by Prof. C. S. Boyer, in specimens of clays obtained by the writer from tbe upper portions of two well borings, one on the beach at Wildwood,7 Cape May Co., N. J., and the other at Rock Hall,8 Md., on the eastern side of Chesapeake Bay opposite the mouth of the Patapsco river. The clays referred to occupied, at Wildwood, the interval between the depths of 79 and 181 feet, and at Rock Hall a similar interval between the depths of 50 and 130 feet. The clays at both localities contained a mixture of fresh-water and marine diatoms, the numbers of individuals of the fresh-water forms somewhat exceeding those of the marine. That these two deposits are probably synchronous in age appears probable from the similarity of their position next below the surface forma- tion (Cape May formation ?), also from the similarity of the as- sembled forms of diatoms, and from the occurrence in both of a unique diatom, Polymyxus coronalis, L. W. Bailey, not however, found in our examination of the forms in the Dismal Swamp bed. This form has not been heretofore known except as living off the mouths of the Para and Amazon Rivers in South America. That the two deposits are much later than Miocene in age may be inferred from the fact that the one at Rock Hall lies directly upon the Rancocas division of the Cretaceous, the Miocene itself resting at a higher level upon Eocene beds a few miles southward and eastward ; while at Wildwood the top of the great Miocene diatom clay bed occurs nearly 200 feet deeper than the base of the deposit under considera- tion, or at the depth of 370 feet from the surface. The well borings, however, show that apparently the same Miocene clay, but without diatoms, commences at the depth of 294 feet. These two deposits containing Polymyxus coronalis and Stauroneis Phoenicenteron, the writer suggests were probably laid down in the deltas of the ancient Delaware and Chesapeake Rivers at the time when the shore line of the Atlantic Coastal plain was many miles eastward of its present position and much of the now submerged portion of the plain was above sea level. SUMMARY. After considering the position of the Dismal Swamp bed, beneath a low lying terrace on the eastern margin of the Coastal Plain and evidently resting immediately upon fossiliferous Miocene beds which TAn. Report Geol. Survey of N. J. for 1894, page 165. 8 In manuscript, not yet published. 428 PROCEEDINGS OF THE ACADEMY OF [1898. can be traced westward along the James River some eighty miles or more to Richmond, Va., and after a careful study and analysis of the contained mollusks and diatoms the conclusion before stated has been reached that both the macroscopic and the microscopic fossils indicate a mechanical mixture of the Miocene and a comparatively recent fauna and flora9 the Miocene forms having been contributed and brought down by erosion from the broad and somewhat higher and gradually rising Miocene belt to the westward, while the more recent forms lived and were deposited as the bed was laid down in a more recent geological time. If we accept the conclusions of all the authorities we have quoted who have studied the Dismal Swamp deposit, we should have to re- fer this bed unequivocally to the Pliocene period. The writer, how- ever, cannot resist inferring from the scantiness of Miocene fossils, which, as already noted, he views as mechanically introduced — from the wide range of many of the Pliocene mollusks, extending down to the present time — from the very decidedly recent aspect of many other shells — and from the even more decidedly recent aspect of some of the diatoms, a more recent date for the bed, and therefore considers that it cannot belong to a period earlier than the latest Pliocene, and that it may, indeed, even belong quite within Pleisto- cene time. Specimens of all the mollusks listed from the Dismal Swamp Canal have been presented to the Academy of Natural Sciences by M. Homer, and are now arranged in its paleontological collection, while strewn mounts of the diatoms have been deposited in the cab- inet of the Biological and Microscopical Section by the author. 9 Diatoms are now generally regarded as belonging to the plant kingdom. 1898.] natural sciences of philadelphia. 429 September 6. Professor Henry A. Pilsbry in the Chair. Eight persons present. September 13. Mr. Benjamin Smith Lyman in the Chair. Seventeen persons present. A paper entitled " New Cretaceous Fossils from an Artesian Weil-Boring at Mount Laurel, N. J.," by C. W. Johnson, was pre- sented for publication. September 20. The President, Samuel G. Dixon, M. D., in the Chair. Fifteen persons present. The deaths of Win. H. DeCamp and J. C. H. Crosse, Correspond- ents, were announced. A paper entitled " Contributions to a Knowledge of the Hymen- optera of Brazil, No. 5, Vespidse," by Wm. J. Fox, was presented for publication. September 27. The President, Samuel G. Dixon, M. D., in the Chair. Thirty persons present. A paper entitled "New Species of Odontostomus from Brazil and Argentina," by Henry A. Pilsbry, was presented for publica- tion. Thomas L. Montgomery was elected a member. The following were ordered to be printed : — 430 PROCEEDINGS OF THE ACADEMY OF [1898. HYALODENDRON NA VALIUM, A NEW GENUS AND SPECIES OF EUPLECTELLID SPONGE. BY J. PERCY MOORE. The type of this genus and species is one of a small collection of silicious sponges gathered in Japan in 1893 by Mr. Frederick Stearns, of Detroit, Michigan, and sent to the Academy of Natural Sciences of Philadelphia for determination. They were collected by native fishermen and brought into Yokohama harbor by the dredge boats. The single specimen of Hyalodendron is the only one which had been reported by the fishermen. Other than this, no data relat- ing to the collection are available. The specimens are accompanied by a set of sketches by a native artist. The species represented are, in addition to Hyalodendron, Euplec- tella, anchor spicules of probably E. aspergillum Owen, Hyalonema reflexa Ijima, a fine specimen of this recently described species and Farrea occa (Bowerbank) Carter, an unusually large example. HYALODENDRON nov. gen. Hyalodendron navalium n. s. The general appearance of the type and only specimen is well shown on Plate XIX, reproduced from a sketch by a Japanese artist which accompanied the collection. The sponge was originally about 18 inches high, but is now slightly mutilated at the summit. It presents a firm base, above which rises a slender tapering "body or stalk, ending in a sharp apex, and bearing numerous lateral branches of various sizes, at the bases of which the sponge wall is perforated by large crater-like openings. The base is a thin, flat and spreading, encrusting layer, which has evidently conformed itself to the rocky bottom to which the sponge was adherent, some fragments of which are still attached. Its upper surface is uneven, but smooth and without any spines or pro- cesses. It is perforated by three or four small holes. It measures 3ix3| inches in diameter, and is from re to £ inch thick. The spicules of this region are mostly slender, more or less curved, pointed diacts of various sizes, most of them being almost fibre-like. They cross one another at various angles and are firmly united into 1898.] NATURAL SCIENCES OP PHILADELPHIA. 431 a hard stony mass by a secondary deposit of silica which encrusts and cements them, with the formation of numerous synaptacula (Plate XX, fig. 6). Regular or modified hexacts are occasionally found wedged in interstices, but the appearance is that the demalia and hypodermalia have been worn or decayed away from this region. The sponge body or stalk rises from near the centre of the base to a height of 16 inches. Its summit is frayed out and must have been originally at least an inch higher. It is terete and tapers gently and regularly from the base, which is H of an inch in diameter, to the broken apex, f of an inch in diameter. A well developed gastral cavity extends through the sponge body from base to sum- mit, so that it is hollow throughout. Toward the base the walls are thick and firm, owing to secondary incrustations of silica, while above they are much thinner and quite friable. The lower 3} inches of the body have a texture and appearance similar to the base, but the transition to the branched upper region is gradual. A very few short blunt spines are borne on the sponge wall, and these partake of the stony hardness and silicious incrus- tations which characterize the walls of this region. Two longer spines, having more of the character of the upper branches, are present, the first 1 inch, and the second 1\ inches above the base. These are respectively I and 4 of an inch long. The former is situated just above the first crater-like opening in the sponge walls. This region of the sponge has a smooth hard surface, and like the basal portion lacks the superficial layers of spicules. At about 3£ inches above the base, loose flesh spicules become more plentiful and soon form a thick soft layer, looking very much like a covering of a fine cotton wool paste, or as if the specimen had been dipped into a thick soap lather, which had been allowed to dry on its surface. Coincident with this change in the character of the surface, spinous processes become more numerous and very much longer, but in this specimen the lower spines are imperfect. While in the lower portion (i) of the sponge the processes remain compar- atively simple and unbranched, those which densely cover the upper half of the stalk are often very long (the longest nearly 5 inches and r6 of an inch in diameter at the base), much and complexly branched, sometimes to the third order. Wherever such branches cross they are united by secondary anastomoses, due to the concre- sence of the parenchyma. The principal branches vary in diameter from iV to h of an inch, but two may fuse at their bases and form 432 PROCEEDINGS OF THE ACADEMY OF [1898. .a much larger mass. The smaller may be unbranched and reach a length of two inches, but are usually provided with a few small branches. The larger are complexly branched, the secondary branches usually forming angles of about 60° with the principal branches, which latter arise from the central trunk at angles of 80°- '90°. While the base and lower part of the stalk are perforated by only a few small pores, the upper part has numerous conspicuous oscula. They perforate the sponge wall between the larger bundles of fibrous spicules, the outer flesh layers rising i of an inch as 7 delicate crater-like rims, scarcely thicker than a sheet of paper. The oscula are usually elongated in the longitudinal direction of the sponge, and in that case have a length of 5 to 6 mm., by a width of 2 to 3 millimeters. In such the rim flares out somewhat at the sides and contracts at the ends, so that its outer edge has a nearly circular outline. Some few of the oscula are circular at their gastral ends. With regard to their distribution on the sponge walls, the lower-most is situated 2 2 inches above the base, and its rim is thickened like the neighboring sponge walls. Most of them evidently stand in some relation to the larger branches. Three occur at precisely the level where the largest spine arises, and two near each of most of the other large branches. In many cases the oscula lie directly at the bases of the large branches, their orater-like rims being continuous on one side, most often above, with the substance of the branch. Looking through the oscula on to the gastral surface, this is seen to be formed of a fibrous network of spicules, without the woolly surface covering of loose spicules. The specimen is a macerated one ; as I was unable to dissect or section it, the arrangement of the chambers and the exact ar- rangement of the spicules could not be determined. The bulk of the skeleton of the sponge wall is, however, chiefly composed of bundles of long fibre like diacts of various sizes and characters. These are disposed in bundles which run longitudinally through the sponge body, but divide and reunite in such a way as to form a net- work, in the meshes of which the oscula open, and which raise more or less evident ridges on both gastral and dermal surfaces. In the upper part of the sponge these diacts remain free, but below they are cemented together as above described. They exist in great variety, but the majority have the form represented in Plate XX, fig. 1, in which the transverse rays are reduced to minute nodules; 1898.] NATURAL SCIENCES OF PHILADELPHIA. 433 in others they are much more evident, or may be entirely wanting. Some of this type are straight, but most are more or less curved, those surrounding the oscula being often semicircular. The ends may be simply pointed, or variously enlarged, and either smooth or roughened with minute spines as shown by a few examples in Plate XX, figs. 2, 3, 4 and 5. The dermalia consist of sword shaped hexacts, which are so numerous as to suggest the specific name of the species. Like the diacts, these differ much in the relative develop- ment of the several limbs, any of which may be straight or more or less curved or even sharply bent. Fig. 9 shows the most typical proportions, but the handle may be scarcely longer than the blade or not more than | as long. The cross pieces may be straight or curved, or sharply bent upward (Plate XX, fig. 12). The handle differs most, being slender and pointed, club-shaped or knobbed, and usually sculptured throughout or at the tip only. The points of the other rays are also usually spinose. The sword handles support the skin, and are not furnished with floricomes at their distal ends ; instead they are surrounded by bundles of minute acicular diacts, Plate XX, fig. 7. The hypodermalia are regular hexasts, oxy-hexasters, which have the principal rays prolonged (Plate XX, fig. 8), rosettes wdiich vary in the length of the principal rays, as shown by two examples in Plate XX, figs. 14 and 15, and discohexasters of great beauty and symmetry of form. One of the simplest of the latter is shown in Plate XX, fig. 16. This has the principal rays well developed, while each group of terminal rays has sixteen members, the pin-head shaped disks having again 16 marginal teeth. Other discohexasters have the number of terminal rays much greater, or the principal rays shortened, so that all appear to arise from a central sphere. The gastralia are also sword-shaped hexacts without bundles of accessory acicular spicules. This sponge would appear to be the type of a new subfamily of Euplectellida?. Description of Plates. Plate XIX. Hyalodendron navalium n. s. The type specimen as it appeared when first taken, from a drawing by a Japanese artist, x f%. Plate XX. Illustrating some of the forms of the spicules of Hyalodendron navalium. Fig. 1. One of the smaller simple diacts of the kind which make up the interior skeleton of the spines and processes, and 434 PROCEEDINGS OF THE ACADEMY OF [1898. which run in bundles through the sponge walls, x 56. 1 a^ middle region of the same showing a slight enlargement,, and the axial fibre with the two reduced transverse axes. x250. Fig. 2. A short, thick diact, with transverse limbs entirely sup- pressed, with slightly enlarged rounded ends, and axial fibre almost gone, x 56. Fig. 3. A small, slender and straight diact, with transverse limbs indicated as rounded nodules, with ends pointed and roughened, and axial fibres complete, x 56. 3 a, one of the ends of the same, x 250. Fig. 4. A small, slender, curved oxy-diact, with transverse limbs distinctly indicated as four nodules, x 56. 3 a, middle region of the same, x 250. 3 b, one of the ends of the same, x 250. Fig. 5. A peculiarly modified end of a large diact, showing a zig- zag course of the axial fibre, x 56. Fig. 6. A portion of the sponge base showing the secondary union of spicules by the formation of encrusting and cementing deposits and numerous synaptacula. At a, the encrusting layers are represented as broken away, exhibiting the original diact. x 56. Fig. 7. A group from one of the bundles of minute acicular diacts found in the superficial parenchyma about the handles of the sword-shaped hexacts. x 56. Fig. 8. An oxy-hexaster in which the axial rays are continued be- yond the place of branching, x 500 Fig. 9. One of the usual type of sword-shaped hexact. x 56. 9 a, b, c, are respectively enlarged views of the handle, tip of one of the cross pieces and the point, x 250. Figs. 10, 11 and 12. Three of the sword-shaped spicules, x 56. 10 is short and regular; 11 has the blade bent and the cross rays rough, uneven and thickened ; 12 is straight, with the cross pieces bent sharply upward toward the handle. Fig. 13. A small, spiny, regular oxy-hexact. x 56. 13 a, one of the rays enlarged, x 250. Fig. 14. A rosette in which the axial rays are continued beyond the disk, and the number of terminal rays is small and con- fined to the margin of the disk, x 250. Fig. 15. A rosette with roughened axial or stem rays terminated by disks bearing a close brush of fine terminal rays, x 340. Fig. 16. One of the simpler disco-hexasters with distinct stem rays, and sixteen terminal rays in each group. The disks or pin-heads have usually sixteen marginal teeth each. x250. 1898.] NATURAL SCIENCES OF PHILADELPHIA. 435 ENVIRONMENTAL AND SEXUAL DIMORPHISM IN CREPIDULA. BY EDWIN G. CONKLIN, PH. D. I. The genus Crepidula Lam. is represented on our North Atlan- tic Coast by at least three species, viz. : C. fornicata Lam., C. plana Say, and C. convexa Say, while the species C. adunca Sby. and C. navicelloides are abundant on the Pacific Coast of the United States. All these species are more or less completely sedentary, and they are usually, though not invariably, carried about by other animals with whom they are messmates and upon whom they are securely fixed. All the larger species of Crepidula are immovably fixed to one spot, e. g., C. fornicata, C. plana, C. navicelloides, while the smaller species C. convexa and C. adunca are able to move about to a limited extent. Among these smaller forms the characters of the shell are fairly constant, but among the larger forms it is well-nigh impossible to tell what the normal or usual form is ; this is especially the case with C. plana, where it is a rare thing to find two shells alike. Even among the smaller species there are marked local varieties depending upon the immediate environment, e. g., C convexa as found on Illyonassa and Littorina shells is deeply convex and very darkly pigmented. On oyster shells it is very much flatter and lighter in color, and is frequently mottled as shown in Plate XXI, Row 2. This local variety has been considered a distinct species, viz. : C. glauca Say ; its anatomical and embryological characters show, however, that it is not specifically distinct from C. convexa. The same is true of Lea's species, C. acuta, which is merely a local form of C. convexa. Among the larger and more sedentary species, C. fornicata and C. plana, the most remarkable differences in the shape of the shells may be observed due to the character of the surface upon which they are attached. " Upon a smooth, plane surface, the shell is regular and unusually broad and flat ; on a convex surface it is deep and highly arched ; on a concave surface it is concave ; on a twisted surface, such as the columella of Neverita, it is twisted ; on an irregular surface, such as a rough stone, it is irregular ; if pressed upon from the sides, 436 PROCEEDINGS OF THE ACADEMY OF [1898. the animal and shell become long and narrow ; if growth is limited in front, the shell becomes short and broad ; if limited on all sides, the shell may increase greatly in thickness but remains small in area, completely filling the space in which it is found. In such cases, the lines of growth are crowded close together, and the very edge of the shell may be as thick as any other portion. " The cause of these variations is not far to seek ; the shape of the shell is conditioned by the shape and position of the mantle edge; the mantle is moulded over the surface upon which the animal rests; and consequently the shape of the shell comes to correspond in time to any sort of a surface upon which the animal is attached."1 Arnold Graf2 has described a case in which a shell of C.forni- cata was marked by radial folds corresponding to those of a Pecten upon which the Crepidula was attached. I have, myself, repeatedly noticed similar cases. More recently, Bradney B. Griffin,3 has called attention to a Pla- cuanomia shell which was found attached to a valve of Saxidomus, and which was marked by lines and folds exactly coinciding with the concentric markings of the Saxidomus. Griffin also remarks that many similar phenomena have been ob- served and commented upon by paleontologists in fossil shells, and he refers particularly to two papers by Keyes4 on the modifications of Platyceras shells due to the surface of attachment. All these modifications are similar to those which I have observed in Crepidula, and are, undoubtedly, due to the causes which have been mentioned. Such irregularities of form could scarcely be called dimorphism, though they might properly enough be called environmental poly- morphism. In no case which I have observed is there any evidence that any of these modifications of form are becoming hereditarily fixed, though they may be found in many individuals and have fre- quently been considered of specific value (e. g., Crepidula glauca and C. acida). 1 Conklin, The Embryology of Crepidula. Jour. Morph., Vol. XIII, 1897. 2A. Graf, Adaptation of the shells of Crepidula jomicata to the shell of Pec- ten Jacobeus. Trans. New York Academy of Sciences, April 3, 1896. 'Griffin, Adaptation of the shell of Placuanomia to that of Saxidomus with remarks on shell adaptation in general. Trans. New York Academy of Sci- ences, Feb li2, 1897. 4 Keyes, The Sedentary Habits of Platyceras, Am. Jour, of Science, October, 1888, and On the Attachment of Platyceras to Palaeocrinoids and its effects in modifying the forms of the Shell, Proc Am. Phil. Soc , Vol. XXV, 1888. 1898.] NATURAL SCIENCES OF PHILADELPHIA. 437 II. An interesting case of environmental dimorphism to which I wish to call attention is found in a race of dwarfs which is specifi- cally identical with C. plana (Plate XXII, Rows 3 and 4). This species is found most abundantly inside dead shells of Never- ita inhabited by the large hermit crab, Eupagurus Bernhardus. In this position individuals grow to a large size, mature females fre- quently reaching a length of 2 inches and a breadth of H inches. On the other hand, the dwarfs referred to are found within dead shells of Illyonassa or Littorina inhabited by the little hermit, Eupa- gurus longicarpus, and never exceed f inch in length by f in breadth, i. e., they are about J the linear dimensions of the larger form. I removed from their shells a large number of individuals of both the common and the dwarfed forms, and estimated the volume of the body in the following way : The individuals were first placed on blotting paper to remove any excess of water, and then a given number were dropped into a known volume of water in a finely gradu- ated tube. In this way the average body volume could be deter- mined with sufficient accuracy. The results of very many such measurements in which mature females of all sizes were taken with- out any conscious selection of large or small individuals show that the average body volume of a mature female of G. plana is f cc. while the average volume of a mature female of the dwarf variety is sV cc, i.e., the average body volume of the typical form is about thirteen times that of the dwarf. This disproportion in size would be much greater if comparison were made between the largest indi- viduals obtainable in the two classes since the dwarfs are much more uniform in size than the type forms. This difference in size is not due merely to differences in the age of individuals compared, since only sexually mature females were chosen for purposes of measurement; all the individuals measured were carrying egg masses, and unless we assume that sexual matur- ity appears much earlier in the dwarfs than in the giants, we must conclude that they were of approximately the same age. A careful study of the shells of the dwarfs and giants also strengthens the view that the former are, on the whole, as old as the latter ; for while the dwarf shells are much smaller and more delicate than those of the giants, they are, in no sense, immature in shape or character; the lines of growth are closely crowded together, the margin of the shell is frequently thickened, and its general shape differs from that of an immature shell. 438 PROCEEDINGS OF THE ACADEMY OF [1898. The dwarfs are perfectly formed in all respects, and all organs of the body seem to be reduced in size in about the same proportion.5 Strangely enough, however, the cells composing the various organs of the dwarfs are not reduced in size. It must follow, therefore, that a smaller number of cells are present in the various organs and also in the entire body of the dwarf than in the giant. It is an almost impossible task to count the actual number of cells present, even in a very small organ. I have, however, been able to count the num- ber of cells in a cross section of the rectum, and while the size of the cells here, as everywhere, is the same in both varieties, the number of the cells in the sections is greater in the giants than in the dwarfs. Of all the cells of the body the ova are most readily enumerated ; they are laid in capsules which can be easily counted, and each of which contains a nearly constant number of eggs. Oft repeated ob- servations show that, without exception, the fertilized but unseg- mented eggs of the dwarfs are of exactly the same size as those of the giants, but are very much fewer in number ; e. g., the following table of averages has been obtained from a large number of obser- vations : — Diam. of egg. No. of caps. Eggs in caps. Total No. C. plana (type) .136 mm. 51 176 9,000 C. plana (dwarf). 136 mm. 48 64 3,070 It is notable that the number of capsules formed is nearly the same in the two varieties, though there is a great difference in the number of eggs inclosed in each capsule. In Crepidula, therefore, the cell size is constant, and variations in the size of the body are due to variations in the number of cells present. This conclusion leads naturally to an inquiry as to the cause of the smaller number of cells, and hence the smaller size of the body of the dwarfs as compared with the giants. In this connection it will be remembered that Semper6 long ago observed that the pond 5 It is worthy of note that certain organs, particularly the gill filaments, are reduced in number in the smaller individuals but not in size, e. g., the num- bers of gill filaments in three different individuals were as follows: — Mature female . . Vol. of body, .75 cc, Gill filaments, 204. Immature female . Vol. of body, .05 cc, Gill filaments, 53. Dwarf female . . Vol. of body, .05 cc, Gill filaments, 58. 6 Semper, Ueber die Wachsthumsbedingungen der Linnattss tagnalis. Arb. aus dem. Zool. Zoot. Inst. Wurzburg, Vol. 1, 1874, also Animal Life as af- fected by the Natural Conditions of Existence, 1879. 1 898.] NATURAL SCIENCES OF PHILADELPHIA. 439 snail (Limncea gtagnaHx) remained small when grown in a small quantity of water, while the larger the quantity of water, up to 4,000 or 5,000 cc, the larger the snails reared in it. As the result of nu- merous experiments, Semper concluded that this difference in size was not due to differences in the quantity of food, inorganic salts or oxygen obtainable, and he suggested that some unknown substance must be present in the water which acts as a stimulus to growth without actually contributing to it. More recently, DeVarigny7 has repeated these observations, and concludes, as the result of several experiments, that the relative vol- ume of the water, in which the snails are grown, is much less import- ant than the relative amount of surface exposed. He holds that the larger the surface the more exercise the animals are able to take, and, therefore, the larger they become. His results show that Sem- per's conclusions are untenable, but they by no means establish his own. It is certainly not generally true, as he holds, that physiolog- ical or mechanical impedimenta to movement result in dwarfing. The larger forms of C. plana are as immovably fixed as the dwarfs ; in this case, therefore, movement can have nothing to do with body- size. In Crepidula, the dwarfed form is unquestionably correlated with the smaller size of the shell in which it has found lodgement. It is possible that the diminished size is due to diminished supply of food or oxygen ; however, the following observation is opposed to this view : I have never found more than one mature female in a shell inhabited by the small hermit, whereas, from four to eight very large individuals may be found in the shell of a large hermit ; under these circumstances, it seems very improbable that the difference in size is due to differences in the amount of food or oxygen obtainable. The most natural interpretation is that the dwarfing is due to pres- sure which limits growth in various directions ; though it must be confessed that the shell of the dwarf remains thin and delicate, whereas, the shells of the common form which are limited in growth by surrounding hard parts grow thick and have a distorted appear- ance. The fact, also, that the males of all these species, and espe- cially of G plana, remain very much smaller than the females (as is pointed out in Section III), speaks against the view that the smaller size is due to a diminution of food or oxygen, since the males have 7 DeVarigny, Experimental Evolution, 1891. 440 PROCEEDINGS OF THE ACADEMY OF [1898. the same opportunities in this regard as the much larger females ; and the fact that the males are in no case limited for space in which to grow, as are the females, makes against the view that their small size, as compared with the females, is due to pressure. On the whole, it seems to me, that some factor, other than those mentioned, is in- volved. Whatever the cause of the dwarfed form, it will be noted that in Crepidula it operates by stopping cell-growth and division, and the real causes of so fundamental a phenomenon are worthy of a more extended study than I have, as yet, been able to devote to it. There is good evidence that these dwarfs are not a permanent va- riety or race. In the first place there are no anatomical differences between the two varieties save size only; secondly, the eggs, em- bryos and larva? of the two cannot be distinguished • thirdly, there is evidence that the dwarfs do not produce enough eggs to continue the variety in its present numbers, for since the type and rate of de- velopment are the same in the two varieties, it is probable that rel- atively no more individuals will come to maturity in the one case than in the other, and yet every giant female produces three times as many ova as are produced by a dwarf; the relative number of these two varieties remains practically constant from year to year, and, therefore, I think it must follow that the ranks of the dwarfs are continually recruited from the descendants of the giants. Both live together on the same beach under about the same conditions of food, temperature and water, the embryonic and larval development of both forms are identical, and it seems probable that the adults of both would be the same if one was not forced by the smaller quarters which it inhabits to remain smaller than the other. But what is still more conclusive is the following observation : A few specimens were found which showed by the shape and character of their shells that at one time they had been typical dwarfs; afterward, having been detached, they obtained a new foothold on a larger surface, and their shells increased in size, the new portions of the shell be- coming shaped so as to fit the surface upon which they had found a new home. In every such shell one can recognize both the dwarf and the normal forms. The dwarfs are what they are by reason of external conditions, and not because of inheritance ; they are, in short, a physiological and not a morphological variety. In such a case the shape and size of the body, as well as the number of cells in the entire organism, are greatly modified by the direct action of Relative vol. of body Male. Female. 1. 14.5 1. 8.3 1. 5.0 1898.] NATURAL SCIENCES OF PHILADELPHIA. 441 environment. But in this case, as in that of the irregular shells mentioned above, I have found no evidence that these modifications have become in the least degree heritable. III. Marked as is the environmental dimorphism in C. plana, the sexual dimorphism is even greater. The average body volume of a mature male of this species is about 55 cc, while the volume of an adult female is about I cc. ; that is, the average female is almost 15 times as large as the average male. In all species of Crepidula the males are smaller than the females, though the difference in size is greatest in C. plana. The following table gives the actual and rel- ative sizes of males and females of the different species : — c . Actual vol. of bodv. Sl3ecies Male. Female C. plana, . . .046 cc. ;667 cc. . C. adunca, . .025 cc. .208 cc. C. convexa, . .01 cc. .05 cc. C.fomicata, . 1.25 cc. 1.6 cc. 1. 1.34 These averages are derived from the measurement of at least 20 ma- ture individuals of each sex. In the case of the males as in that of the dwarfs, the smaller size of the body is due to the smaller number of cells present rather than to the smaller size of the cells. Careful measurements of cells of the intestine, stomach, liver, kidney, muscles of foot, epithelium of gill chamber, and epithelium of gill filaments show that the cell size remains the same in the male as in the female. Whatever the ulti- mate cause of the smaller size of the males may be, it operates in this case as in that of the dwarfs by causing a cessation of cell growth and division. In all these species the males are almost invariably found mounted upon the shells of the females, and in plana, adunca and convexa they are able to move about more or less freely, but the full-sized males of fomicata are as immovably fixed to one spot as are the fe- males. In such cases sexual union could take place only between individuals attached near to each other. On muddy bottoms C.for- nicata has the habit of piling together, one individual on top of another, until there may be as many as ten ortwelve individuals in a single chain ; such chains are often found in which there is not a single male, and yet I have never found an unfertilized female. Again, perfectly isolated females with large numbers of fertilized 29 442 PROCEEDINGS OF THE ACADEMY OF [1898. eggs are of frequent occurrence. In such cases I was, for a long time, puzzled to know how the eggs came to be fertilized. I after- ward found by a study of serial sections that in the females of all the species there is a seminal receptacle in the form of a con- voluted tubule which opens into the oviduct, and in all mature individuals this is filled with spermatozoa. These spermatozoa are attached by their apices to the walls of the receptacle ; it is prob- able that they receive nutriment from these walls just as they do in the seminiferous tubules of the male, and that they can live indefi- nitely in this position. Since there are myriads of these spermato- zoa in the receptacle, and since they are carefully conserved, as is shown by the facts that polyspermy rarely, if ever, occurs, and that no superfluous spermatozoa are found in the egg capsules or oviduct, it might well be that one sexual union would suffice for a life time. In some such way as this must be explained the fact that perfectly isolated females of C. fomicata lay eggs which are always fertilized, though both the full grown males and females of this species are perfectly sedentary. In the case of the other species named, the males are never im- movably fixed to one spot, they are able to move about slowly upon the surface of attachment, and, if detached, can obtain a new foothold; their shells, also, are not distorted so as to fit irregular surfaces as is the case with the females. In all cases locomotion is limited to small individuals. The young of all species and of both sexes crawl about freely and rapidly. In G. eonvexa individuals of both sexes retain this power to a limited extent, but the large fe- males of adunca, navicelloides and plana become firmly fixed, whereas the males of these species remain relatively small and retain, to a certain extent, their power of locomotion. The larger any individ- ual becomes, the more limited are its powers of movement, and it is evidently in relation to this fact that the males are so much smaller than the females ; Jbecause of this marked sexual dimorphism, the large and sedentary females may be repeatedly, or, in C. fomicata, perhaps once for all, visited and fertilized by the smaller and motile males. In C. plana the shell of the male is more nearly round than that of the female, and is usually sharply pointed at the apex ; it is thicker than an immature shell, the edges being thickened and the lines of growth crowded together as is the case with the dwarfs. These characters are so constant that it is usually easy to distinguish a 1898.] NATURAL SCIENCES OF PHILADELPHIA. 443 male from an immature female, as is shown in Plate XXIII, where immature individuals are shown in the first row, mature males in the second, aud an immature female at the right end of the third row. To the left of this immature female are shown a number of individuals in which the older part of the shell has the male char- acters, while the newer part has those of the female. " In such ani- mals the penis is usually very small, and, in some cases, has almost entirely disappeared. Quite a complete series of stages in the de- generation of this organ was observed, from the fully-formed organ on the one hand, to a minute papilla on the other. Sections of such animals show that neither male nor female sexual cells are produced at this time. The evidence seems to favor the view that we have, in these cases, an example of proterandric hermaphroditism, but I am not able to assert that this is really the case, although I have spent much time in attempting to decide it."8 Further, I have not stud- ied a sufficient number of cases to be able to decide whether this is a regularly occurring phenomenon or only an unusual and abnor- mal approach to hermaphroditism. Explanation of Plates. The plates are from photographs of actual specimens, and are re- duced about one-third in size. Plate XXI. Row 1. C. convexa from exterior of Illyonassa. The shells are deeply pigmented and highly arched ; 3d to 6th show males attached. Row 2. C. convexa (C. glauca Say) from flat sur- faces, some from exterior of oyster shells. The shells are unusually flat and broad, and those from the oyster shells are light in color and mot- tled with brown spots. Row 3. First five shells are C. adunca, all with males attached. Remainder of row and all of Row 4. C. navicelloides ; many of the shells irregu- lar in shape. Row 5. C.fornicata; various sizes, shapes and colors. Plate XXII. All shells on this plate are of C. plana. Row 1. Interior views of shells of very different shapes, due to the characters of the surfaces of attachment. Row 2. Exterior views of same. 8 Embryology of Crepidula, Jour. Morph., Vol. XIII. 444 PROCEEDINGS OF THE ACADEMY OP [1898. Row 3. Exterior views of dwarfs (mature females) from interior of Illyonassa and Littorina shells inhabited by the small hermit crab. Row 4. Interior views of same. Last five shells in row males and immature forma of dwarfs. Plate XXIII. All shells shown are those of C. plana. Row 1. Immature forms; not differentiated sexu- ally- Row 2. Mature males. Row 3. First six, mature males ; seventh to tenth, forms intermediate between males and females; last shell in row immature female. Row 4. Mature females ; a few with males attached. 1898.] NATURAL SCIENCES OF PHILADELPHIA. 445 CONTRIBUTIONS TO A KNOWLEDGE OF THE HYMENOPTERA OF BRAZIL, NO. 5.- VESPLDJE. BY WILLIAM J. FOX. This paper relates solely to the social wasps, which are, in the present author's opinion, not only distinct in their habits from the solitary species, but differ also in having the middle tibiae always with two spurs. In stating the sex of a specimen throughout this paper I have not been quite sure whether certain specimens represented females or workers, and therefore, when the sex represented is other than the male, I have written female, or worker. I understand it is the intention of Mr. Herbert Smith to contrib- ute a memoir on the nests of these insects of which he has a large number. These are at present stored away in boxes and are unavailable. Therefore, for the descriptions of the nests of the new and other species noted herein those interested must await Mr. Smith's return from South America where he expects to pass two years collecting natural history specimens. Mischocyttarus labiatus Fabr. Rio de Janeiro, October, November; Mararu, April; Chapada, March, April; Uacarizal, February; Pedra Branca, April; San- tarem. About 50 specimens. Apoica pallida Oliv. Rio de Janeiro, November ; Chapada, January, April, October; Santarem. Fifteen specimens. This is quite a variable species the body color running from entirely whitish-yellow to dark brown. The following forms are in the collection : 1. Entirely yellowish-white; antennae white at tip; costal cell clear, wings whitish. 2. Yellowish-white, with vertex, dorsulum in part, sutures of thorax, legs, petiole at base, and apical margins of segments obscurely, pale brown ; costal cell a little ferruginous, wings whitish. 3. Same as No. 2, but with dorsulum entirely brown, which color is well spread out over the entire thorax but in a very pale tint ; 446 PROCEEDINGS OF THE ACADEMY OF [1898. abdomen whitish above; costal cell quite ferruginous, the wings not whitish, dark subhyaline. 4. Head, thorax, legs and petiole quite brown, the cheeks, prono- tum laterally, postscutellum, middle segment apically, and body of abdomen pale yellowish ; wings colored as in No. 3. 5. Entirely brown ; posterior margin of pronotum, two spots on scutellum and postscutellum, apical margin of segments 1-5, and greater part of sixth, yellowish wings as in No. 3. (=arborea f). 6. Dark brown, the thorax above black ; first abdominal segment narrowly yellow at apex ; wings as in No. 3 ; size large. It is quite probable that A. virginea and arborea are only varieties- of A. pallida. Synoeca testacea Sauss. Mararu, April, May ; Santarem. Eight specimens. Synoeca surinama Linne. A large series from Chapada, January to April, October ; Uacari- zal, February ; Rio de Janeiro, November; Santarem. Synoeca cyanea Pabr. Rio de Janeiro, November. Two specimens. Synoeca azurea Sauss. One specimen. Chapada, December. In addition to the bluer color and prominent tubercles of petioles this species is peculiar for its small head which is barely as wide as thorax. The collection also contains a single $ specimen with the second submarginal cell greatly narrowed above, the distance between the first and second transverso-cubital veins at the top less than that between the recurrent veins on the cubital vein. The head is about as wide as thorax. Otherwise it is very close to surinama. Polistes Ferreri Sauss. A large series from Corumba, Chapada, Santarem and Rio de Janeiro. Polistes bicolor Lep. Two specimens. Santarem. Polistes versicolor Oliv. About 75 specimens. Benevedes, July ; Mararu, April ; Rio de Janeiro, October and November ; Chapada, April and October ; Santarem. The maculation of abdomen varies from a simple yellow 1898.] NATURAL SCIENCES OF PHILADELPHIA. 447 band at apex of first segment to forms with the abdomen almost entirely yellow. Polistes carnifex Fabr. Chapada, October, December, January ; Rio de Janeiro, Novem- ber ; Corumbd, April ; Santarem. Nine specimens. Polistes ruficornis Sauss. Chapada, February to April, June. About 35 specimens. The amount of red and black on thorax is variable. The prothorax and scutellum may be either color. Polistes cinerascens Sauss. Chapada, February, March, June ; Rio de Janeiro, November. Ten specimens. Polistes pacificus Fabr. Mararu, April ; Santarem. Six specimens. Polistes acteon Hal. One specimen. Rio de Janeiro, November. Polistes subsericeus Sauss. Sixteen specimens. Chapada, March and December. Polistes thoracicus n. sp. Brick red; sides of middle segment, metapleura and mesopleuroe sometimes, and four hind coxae, more or less, black ; wings yellow- ish. The following parts are obscurely yellow, or of a paler tint than most of body : head in front, cheeks, hind margin of pronotum, teguhe, scutellum, postscutellum, apical margin of segment 1 and 2, and 3-6 entirely yellow. 9 . — Clypeus longer than broad, obtusely angular anteriorly ; space between hind ocelli about equal to half that between them and eyes, the latter separated from base of mandibles by a distance equal to the fourth, fifth and half of sixth joints of antenna?; pronotum strongly margined ; dorsulum nearly one-quarter longer than broad ; middle segment with indistinct transverse striations. Length 16- 17 mm. $ . — Antennae longer ; striation of middle segment coarser. Chapada, February to April. Related to P. carnifex, but is much smaller, with black sides of thorax, comparatively longer clypeus. It is larger than P. ruficornis, of which it might be taken for a variety, and the clypeus is much longer. The coloration is quite constant in the six specimens before me. 4-18 PROCEEDINGS OF THE ACADEMY OF [1898. Polistes geminatus n. sp. Head, dorsulum and abdomen black ; mouth, antenna? beneath basally, thorax on sides and beneath, legs and base of first segment, reddish-brown ; inner and posterior orbits, clypeus at sides and apically, inner margin of mandibles, scape beneath, line on pronotum anteriorly and posteriorly, tegulse, line on anterior part ofscutellum and postscutellum, two broad stripes on middle segment, a small spot near base on each side, spot at sides of scutella, and at top of metapleurse, stripe on four hind coxa?, apex of middle segment, two spots on first segment of abdomen, its posterior margin, and posterior margin of segments 2 and 3, or 2-4, narrowly, yellow ; wings light fuso-hyaline, costal cell somewhat yellowish ; femora sometimes striped with yellow. 9 . — Clypeus about as broad as long, obtusely angular anteriorly, rather distinctly punctured ; space between hind ocelli equal to nearly two -thirds of that between them and eyes, the space between the latter and base of mandibles not equal to the width of the latter ; pronotum margined ; dorsulum more than one-quarter longer than broad. Length 14 mm. Var. — Clypeus entirely black ; femora striped with yellow ; lateral spot of first segment coalescing with the yellow at apex. Length 13 mm. Chapada, March. Two specimens. Resembles P. cinerascens, but differs in color of wings. In the bi-spotted first segment it seems to have some resemblance to P. biguttahis, but that species is quite differently colored, judging from the description. Polybia fulvofasciata DeG. Chapada, January, April, September to December. Forty-three specimens. Polybia fasciata Lep. Chapada, February, March, June, September, October. About one hundred specimens. Leipomeles lamellaria Mobius is colored precisely as P. fasciata judging from the description. Are they perhaps identical? P. fasciata is a Polybia, however. Polybia fastidiosuscula Sauss. Over 100 specimens. Chapada, April, September to November. Polybia surinamensis Sauss. Rio de Janeiro (July, November); Mararu (April); Santarem. Sixteen specimens. 1898.] NATURAL SCIENCES OF PHILADELPHIA. 449 Polybia occidentalis Oliv. (==pygmcea Fabr.). About 250 specimens of typical occidentalis, and over 60 represent- ing pygmcea Fabr., which I regard as a variety of this species. The large series before me shows that the two supposed species intergrade. Both forms seem to occur in the same localities simultaneously. From Chapada, Santarem and Rio de Janeiro, March, April, Sept- ember, October. Quite as large a series of individuals, having the head reddish, is also represented. This form is not distinct as a species from occi- dentalis. Occurs in the same regions and at same time as typical occidentalis. Polybia oecodoma Sauss. Rio de Janeiro and Chapada in November. Six examples. Polybia scutellaris White. Chapada, March, October, December. Nearly 100 specimens, of which 90 per cent., represent a variety with the head and part of thorax above, rusty-red. Polybia pumila Sauss. About 100 specimens from Chapada and Sebastian March, April, October, November. Polybia pediculata Sauss. Chapada, October ; Para, June ; Santarem. Over 60 examples. Polybia rejecta Fabr. Mararu, April ; Chapada, January, April, September, October ; Santarem ; Sebastise, October. About 50 specimens, whose colora- tion is quite constant. P. bicolor Smith is evidently synonymous with rejecta. Polybia Jurinei Sauss. Over 60 examples, not showing any variation of color. Chapada, January, September, December; Rio de Janeiro, November; Mar- aru, April ; Santarem. Polybia metathoracica Sauss. Chapada and Mararu (April) ; Santarem. Three specimens of the typical form. Polybia bifasciata Sauss. Two specimens from Santarem. 450 PROCEEDINGS OF THE ACADEMY OP [1898. Polybia rufidens Sauss. Two specimens. Corumba (April) ; Chapada (May). Polybia atra Oliv. Chapada, January, March-June, August, December; Santarem. About 250 examples. Polybia dimidiata Oliv. Chapada, January, April, October to December. Thirty-four specimens. Polybia socialis Sauss. A single specimen from Rio de Janeiro, November. Polybia sylveirse Sauss. Three specimens, Rio de Janeiro, November. P. enxius Smith seems to be identical with sylveirce. Polybia pallipes Oliv. The series before me shows that in coloration this species merges from the form figured by Saussure on PI. XXV (fig. 2) of his work, abdomen brownish or blackish, into the species known as fulvo- fasciata DeGeer. The latter has the wings quite yellow, however, whereas in pallipes they are subhyaline. About 45 specimens. Chapada, January, March, April, Sept- ember, October, December; Corumba, April, May ; Pedra Branca, April ; Rio de Janeiro, November ; Santarem, February. Polybia vespiceps Sauss. Sebastia?, October ; Chapada. About 60 specimens. Polybia liliacea Sauss. A large series of this species from Chapada, March, April, Sept- ember, October, December; Mararu, April ; Santarem. Polybia angulata Fabr. Eleven specimens from Santarem. Polybia carbonaria Sauss. There is a single male in the collection from Rio de Janeiro, Nov- ember, which I doubtfully refer to this species. Saussure described the female only. Polybia angulicallis Spin. Two specimens. Santarem. Polybia lugubris Sauss. Rio de Janeiro, November. One specimen. 1898.] NATURAL SCIENCES OF PHILADELPHIA. 451 Polybia flavicans Fabr. (=testaeea Fabr.). Mararu, April ; Santarem. Eighteen specimens. Polybia paraensis Sauss. Same localities as flavicans. Five specimens. Polybia chrysothorax Licbt. Chapada, January-April, October; Mararu, April; Santarem. About 40 specimens. Polybia sericea Oliv. Nearly 200 specimens from various localities. The coloration seems quite constant, no specimens of the variety with " abdomen brunatre," mentioned by Saussure, being present. Polybia mexicana Sauss. • Four specimens from Rio de Janeiro in November, are perhaps this species, as near as can be judged from the description. The legs are apparently yellower and the body darker than in mexicana, which species, how7ever, is quite variable according to Saussure. Polybia infernalis Sauss. Santarem. • Two specimens. One has quite distinct abdominal fascise. Polybia emaciata Luc. Twelve specimens from Mararu, April, and Santarem, agree with the description of this species, except that the dark spot on vertex is wanting. Polybia sedula Sauss. Over 75 specimens. Chapada, March, September, October ; Mararu, April ; Sebastian. Polybia latior n. sp. 9 or ^ . — Black, with a silky pile; legs brownish the four hind coxse striped with yellow, and a narrow yellow stripe on post- scutellum. Clypeus distinctly broader than long with tolerably strong punct- ures ; ocelli in an equilateral triangle, the space between hind pair equal to considerably more than half that between them and eyes ; latter almost reaching mandibles; flagellum subclavate, the first joint about as long as two following united ; pronotum short, finely margined; dorsulum fully one-quarter longer than broad; middle segment short, not longer than scutellum and postscutellum, sulcate 452 PROCEEDINGS OF THE ACADEMY OF [1898. down middle, subconcave ; petiole of abdomen slender, but broadened from beyond middle, so tbat it becomes somewhat infundibuliform, in length longer than hind femur ; remainder of abdomen ovate ; wings brownish basally and in the costal cell, otherwise dark sub- hyaline, with nervures and stigma brownish ; third submarginal cell rhomboidal, higher than long, its outer nervure strongly sinuate. Length 12-13 mm. Chapada, October. Three specimens. Belongs apparently to Saussure's IV Division My., and is allied to P. constructor. Viewed from above the shape of petiole greatly resembles the lower part of a horse's fore leg seen from the front, the swollen portion represent- ing the hoof. Polybia flavitincta n. sp. 9 or $ . — Black, with a dense silky,brown pile ; flagellum, tegulse and legs from tip of femora, ferruginous brown ; a narrow line on pronotum posteriorly, and at apex of petiole, yellowish. Clypeus a little broader than long, with a few large punctures anteriorly ; ocelli in a high triangle, in consequence of the hind pair being much closer than they are to the anterior one ; flagellum sub- clavate, the first joint a little longer than the two following united ; eyes almost reaching the mandibles ; pronotum tolerably well devel- oped above, not margined or ridged ; dorsulum broad and short, its length barely one-fifth greater than its width ; middle segment short, almost perpendicular, strongly sulcate down middle, and with dis- tinct separated punctures, and silvery pile apically ; petiole of abdomen elongate, about as long as hind femur, slender basally and suddenly broadened beyond middle, so that it presents an infundi- bulate appearance; remainder of abdomen short-ovate; superior wings strongly yellowish anteriorly, otherwise the wings dark sub- hyaline, nervures and stigma yellowish ; second submarginal cell quite triangular ; third submarginal rhomboidal, higher than long, distinctly narrowed above, its outer nervure a little curved near the top. Length 14 mm. Santarem. Two specimens. Allied to P. lugubris. In colora- tion it more closely resembles P. angulicallis, but the prothorax is not produced as in that species. Polybia tinctipennis n. sp. 9 or $.— Black, with brownish silky pile; legs and tegula? brown ; posterior margins of pronotum and petiole with an obscure 1898.] NATURAL SCIENCES OF PHILADELPHIA. 453 narrow, yellow line ; superior wings fuscous on basal two-thirds, especially in costal cell with dark nervures, the apical third whitish- yellow, with yellowish nervures and stigma. Clypeus subcordate, nearly as broad as long, with large scattered punctures throughout ; ocelli forming an almost equilateral triangle, the space between hind pair, however, slightly less than that sepa- rating them from the anterior one, and not nearly equal to half the distance between them and eyes ; the latter not reaching base of mandibles, being separated from them at their closest proximity by a distance nearly equalling the length of fourth antennal joint; pronotum short, finely margined or carinated at the sides anteriorly, but not medially ; dorsulum at least one-quarter longer than broad ; scutellum, postscutellum and metathorax strongly punctured, all three more or less sulcate down middle, especially the middle segment which has the furrow much broadened apically ; sides of thorax strongly punctured ; petiole, distinctly punctured, shorter if anything than hind femur, somewhat clavate, being gradually broadened from before the middle, the basal third stem-like; remain- der of abdomen cordate ; second submarginal cell short, much higher than long aind narrowed above ; third submarginal rhomboidal, higher than long, somewhat narrowed above, the outer nervure sinuate. Length 13 mm. Chapada, September and December. Two specimens. Belongs to Saussure's IV Division My. Its resemblance to P. socialis is only superficial. The shape of petiole is nearly as in P. lugubris, but is more slender. Polybia chapadae n. sp. 9 or £. — Ferruginous; body of abdomen, sides of prothorax and niesopleurpe sometimes darker; two broad oblique marks uniting in V-form on front, and the occiput black ; antennae dark above ; clypeus, mandibles except tips, inner and posterior orbits,two oblique lines on vertex behind ocelli, lines on pronotum anteriorly and pos- teriorly, two rather indistinct lines on dorsulum, scutellum and post- scutellum anteriorly, tegulse, spot at top of meso- and metapleura?, two broad lines on middle segment, four anterior coxse beneath, stripe on hind coxse, spot at tip of all femora, (sometimes obscure), and apical margin of abdominal segments 1-3 or 1-6, or the first only, yellowish. Clypeus about as broad as long, not distinctly punctured ; ocelli forming an equilateral triangle, the space between hind pair a little 454 PROCEEDINGS OF THE ACADEMY OF [1898. less than that between them and eyes ; the latter almost reaching mandibles ; first joint of flagellum as long as the second, third and most of fourth ; pronotum short, margined ; dorsulum more than one-quarter longer than broad ; middle segment broadly channelled, down middle almost concave ; petiole of abdomen about as long as hind femur, elongate, tolerably slender, broadened gradually and gently from beyond middle; remainder of abdomen ovate; wings dark subhyaline, faintly yellowish in the costal cell ; nervures and stigma brownish ; third submarginal higher than long, the outer nervure curved, and just before its junction with the cubital nervure, angulate. Length 15 mm. Chapada, February. Three examples. Belongs to Saussure's V, Division Kappa, and is apparently allied to P. raphigastra. The petiole is more broadened at apex than in P. surinamensis, and the body quite robust. Polybia gorytoides n. sp. 9 or $ . — Blackish or dark brown ; head, except a broad trans- verse stripe on vertex, thorax entirely on sides and beneath, pronotum except an oblique stripe on each side, two stripes on dorsulum, scutellum and postscutellum except posterior margins, middle seg- ment except in longitudinal furrow, legs (tarsi darker), abdomen entirely beneath, first dorsal segment at sides and apex, apical mar- gin of dorsals 2-6, yellow, that on second dorsal extending to base at sides. Clypeus broader than long, with a few large punctures, its fore margin sharply angular ; ocelli forming a rather high triangle, the space between hind pair less than that between them and anterior one, and not equal to half the distance between them and eyes ; the latter almost reaching base of mandibles ; vertex distinctly punctured ; flagellum clavate, the first joint about as long as the two following united ; pronotum indistinctly margined ; dorsulum punctured, but not very strongly, about one-fifth longer than broad ; middle segment broadly furrowed, rather flat, and sloping evenly from base to apex ; first abdominal segment subcampanulate, much shorter than hind femur, not much longer than first hind tarsal joint; remainder of abdomen subpyriform, very broad at base, acute at apex ; wings sub- hyaline, very faintly yellowish along costa ; nervures and stigma yellowish ; third submarginal cell longer than high, twice as long, or more, than second, a little narrowed above, the outer nervure gently sinuated. Length 10J mm. 1898.] NATURAL SCIENCES OF PHILADELPHIA. 455 Var. — Reddish-testaceous, with the yellow marking ohscure, the stripe on dorsulum wanting; black spot on vertex quite prominent. Chapada, September ; Santarem. Twelve specimens. Belongs perhaps to Saussure's II, Division Iota, but the third submarginal cell is longer than high ; otherwise it agrees with the characteristics of that group. It has a strong superficial resemblance to some species of Gorytes. The variety mentioned comes from Santarem. Polybia suffusa n. sp. 9 or ^ . — Black ; scape and pedicel, pronotum more or less, body of abdomen, and legs in part, obscure ferruginous-brown ; mandibles, fore margin of clypeus, spot on inner orbits at base of clypeus and at bottom of cheeks, pronotum anteriorly and posteriorly, two spots on mesopleura, one at top of metapleura, scutellum, post- scutellum, middle segment except on sides, base of petiole and a fascia at its apex which is extended along the sides, and a fascia at apex of segments 2-5, yellow ; head and thorax with a golden pile, not very dense, however. Clypeus broader than long, not distinctly punctured, its fore mar- gin acutely angulate ; front with shallow punctures ; ocelli form a high triangle ; eyes barely reaching base of mandibles, at any rate they are more distant than in P. pediculata, to which suffusa is related ; flagellum clavate, the first joint nearly as long as three following united; dorsulum about as broad as long; middle segment with shallow punctures, strongly furrowed down middle, more so than in pediculata ; petiole, if anything, slightly longer than hind femur, slender, strongly dentate behind middle, and a little dilated from the teeth to apex ; remainder of abdomen cordate ; wings sub- hyaline, strongly iridescent ; nervures and stigma dark brown ; third submarginal longer than high, three times as long as second, slightly narrowed above, the outer nervure sinuous. Length 7-8 mm. Chapada, May and October. About 60 specimens. This species is closely allied to P. pediculata, but differs in coloration, less tri- angular second submarginal, and generally more slender form. The petiole is shaped almost precisely as in pediculata. Polybia frontalis n. sp. 9 or $ , and $ . — Black ; front, clypeus and most of scape, red- dish-yellow ; posterior orbits, narrow line on pronotum anteriorly and posteriorly, spot beneath wings, postscutellum except apex, tips of all femora, spot at tips of four anterior tibise, and a narrow line, 456 PROCEEDINGS OF THE ACADEMY OP [1898. sometimes wanting at apex of petiole, pale yellow ; mandibles red- dish. Clypeus with shallow punctures, broader than long, obtusely angular anteriorly ; ocelli forming a low triangle in consequence of the hind pair being nearly twice as far apart as they are from the anterior one, the distance between the hind pair about equal to that between them and eyes ; the latter almost reaching base of mandi- bles ; flagellum subclavate, the first joint about as long as the follow- ing two united ; pronotum short, margined ; dorsulum barely longer than broad, middle segment short, rather concave, with a narrow raised line down middle on each side of which there is a furrow ; petiole shorter than hind femur, elongate and tolerably stout, gradu- ally enlarged from near base, much more slender than in P. socialise remainder of abdomen subovate ; legs robust; wings subhyaline throughout; nervures and stigma dark; third submarginal cell higher than long, the outer nervure angulate before its junction with the cubital vein. Length 11-12 mm. $ . — Colored like 9 °r $, but having the usual sexual differences • smaller clypeus, narrower front, antenna? longer and acuminate at tip ; otherwise agreeing with the preceding description. Chapada, October and November. Ten females (workers ?), one male. Allied to P. socialis, but the more slender petiole excludes it from Saussure's II, Division Iota. These divisions are not natural, however. Polybia marginata n. sp. 9 or $ — Thorax, petiole and legs reddish brown, the first men- tioned with thin golden pile; head, and body of abdomen black; sides of thorax and petiole apically dusky ; line on inner orbits be- low emargination, on posterior orbits above, line on pronotum anteriorly and posteriorly, fore margin of postscutellum, two lines on middle segment, spot on four hind coxa?, and at tip of all femora, pale yellow. Head subquadrate, not very transverse; ocelli forming an equi- lateral triangle; first joint of flagellum nearly as long as the three following united ; pronotum sharply margined anteriorly ; dorsulum about one-fifth longer than broad ; middle segment concave medially ; petiole elongate, slender, broadened from beyond middle, altogether more slender than P. sericea, in length greater, if anything, than hind femur ; wings dark, paler apically, black in costal cell ; breadth 1898.] NATURAL SCIENCES OF PHILADELPHIA. 457 of second and third submarginal cells at the top nearly equal. Length 15 mm. Chapada, September, October. Four specimens. Is the exact counterpart of P. sericea superficially, but differs by the squarer head, margined pronotum, more slender petiole, shorter dorsulum, etc. Tatua morio Fabr. Chapada, January, November, December ; Santarem. About 40 specimens. Chartergus apicalis Fabr. Over 60 specimens. Sebastise, October ; Chapada, October to December ; Corumba and Mararu, April. Chartergus Smithii Sauss. One example. Corumba, April. Chartergus ater Sauss. Two specimens. Chapada, January; Santarem, April. Chartergus chartarius Oliv. Chapada, March and October ; Santarem. Nearly 50 specimens. Chartergus globiventris Sauss. Sebastian, October. Two specimens ( 9 • • 418 Onychomys • • • • 194 Mullidse . . • • • • 341 Opbiodes . . . 103, 104 Mullus . . . • 341 Ophiogomphus . . 150 -152 Munena . ■ • • • » 340 Orchid aceae 388, 398, 409 Murseuidre . . • • • • 340 Oreortyx . . 208 Mus .... . . 121, 358 Ornithomyia ■ 164 Musca . . . 172, 173, 183 Ornithorhynchus . . . 492 Muscidae . . • • • • 172 Orobanchaceae 395 Muscinia . . . . 168, 183 Oroscoptes 217 Mustelus . . • • • • 339 Orthetrum . . '. '. 145," 153 Mychostoma . 268, 272, 279 Ortbocarpus . . 38, 309 Myiarchus . . . . 81, 211 Orthomesus ■ . • 202 Myodes . . . . 368 Oryzomys . . . . 480, 481 Myospila . . . . 168, 183 Ostrea . . . 418-420, 462 Myotis . . . • • • ■ 321 Oscinidae . . • « • • 164 Myrtacese . . • . • < 411 Otocoris . . . 82 Nassa . . . • • • • 418 Oxalis . . . 380, 386, 404 Natalinse . . • • • • 326 Oxybapbus . . 39, 310 Natalus . . . . . 32 6-328 Oxytropis ■ . 16, 21, 298 Navicula . . 110, 422, 423 Pachystima . . 20, 296 Nectarina . . • • • . 460 Pagellus • • • • 342 Nectouxia . . . . 390, 399 Pagrus . . . • • • 341 Nephrolepis . 409 Palaelodus . • • 497 Nerita . . . 202 Palamedea . . . 496, 497 Neritopsis . . 202 Palamedeidae • • • • 497 Neusticurus . 104 Pangonia . . .... 157 Nucifraga . . 212 Pantala . . . 142, 143, 152 1898.] NATURAL SCIENCES OF PHILADELPHIA Pantodactylus Papaveracese . Papuina . . Paracompsomyia Parochromyia Parus . . Passer . . Passerella . Passeres . . Passerina . Paulicea Pecten . . Pectis . . Pectunculus PedicularislG Pelkea . . Pentstemon 101 169 87 139 489 84 101 419 38,309,391 39, 49, 309 400 Peperomia . Pepsis . . Pernettya . Perrieria . Petalostemon Petricola Petrochelidon Peucedanum Phacelia Phainopepla Phalacrocoracida? Phalacrocorax Phalsenoptilus Phalangium . Phalaropus Phaseolus 354, Phellaudrium. Phenacarion . Philaete . . . Philadelphia . Philibertia . . Philohela . . Philomycidae . Phlox . . . Phoca . . . Phoenicopteridse Phorbia . . . Phyllocactus . Phyllonycteris Physalis . . 21 84 28, 302 37, 308 380, 3 88 27 48 104 379 265 184 178 218 83 215 493 215 108 421 392 462 400 393 407 398 75 399 284 298 60 216 303 309 216 137 137 210 43 139 389 29 249 498 301 390 79 221 315 200 497 162 411 333-337 . 394, 406 Phytolacca Phytolacca cese Pica . . . Pineria . . Pipilo . . Pinna . . Pinnulacea Pinnularia Pinus . 46, 49, Piper . • Piperacese . Piranga . . Placentaceras Placiphorella Placosoma . Placuanomia Plagiobothrys Plagiogramma Plautaginacese Plantago . Platemys . Platophrys Platyceras . Plagiodontes Platystoma . Platytrochus Plectrophenax Pleurotorna Pliorhytis . Plumbaginacese Plumbago ; Podalirius . Podilymbus Polemoniacese Polemonium Polistes . . Pollenia Polybia . . Polychrus . Polygala Polygonacese Polygonum Polymita . Polymyxus Polynices . , Polypodium . Pomacentrida? Pontederiacese 314, 395 398 84 103 37 383 383 448 387 140 '84 110 190 37 446 169 -456 103 21 40,310 68 ,400 539 394 394 212 281 215 462 381 1-118 397 410 410 215 462 288 105 436 309 423 407 407 101 347 436 473 108 462 139 347 59 390 390 54 207 382 308 >-448 175 458. 106 297 384 384 265 427 418 409 343 384 540 PROCEEDINGS OF THE ACADEMY OF [1898. Poocsetes 83 Populus 42, 312 Portulacacese . 386, 388, 393, 402 Porzana 498 Potentilla . . .25, 300. 403 Priva -390 Prionodactylus 101, 103, 104 Procellariid?e . . . 135, 495 Prometheichthys . • • • 341 Prophysaon 220-228, 240-254 Prunella 405 Prunus 25, 300 Psaltriparus 218 Psammobia . . . 57, 59-62 Psammobiidse 57 Psammocola .... 59-61 Psammosolen 59 Psammotella 58 Pseudauliscus 423 Pseudogrypbus . • . . 208 Pseudoplatystoma . . . 108 Pseudopyrellia . . . . 173 Pseudo-Tsuga 49 Psidiura 411 Psoralea . . . 23,48, 298 Pteria 462 Pterodontia 161 Pteropus 316 Puffinus 136 Pugnellus 462 Pupa 265 Pupidce 265, 284 Purpura 190 Purshia 26, 300 Putorius 188 Pycnoptycbia . . .271, 275 Pygopodes . . 489, 495, 497 Pyramidula 221 Pyrifusus 462 Pvrola 405 Pyrus .... 24,47, 299 Quenselia 347 Quercus. . 41,311,388, 395 Quiscalus 82 Raja 339 Rajidse 339 Rallus 498 Ranunculacese Ranunculus Raphanus . Regulus . . Reithronycteris Reseda . . Resedacese . Rbabdonema Rhamnacese Rhamnus Rbingia . Rbinolopbus Rbodea . Rhogeessa Rbus Ribes . . 27, Rissa Rosa . . Rosacea? . Rosmarus Rubiacese Rubus . Ruellia . Ruvettus Sagittaria Salicacese Salix Salsola . Salvia 39, 310, Sanguinolai Santolina Sapindacese Sarcobatus Saxicola . Saxifragacese Sayornis Scala Scalaria . Scapbella Scaphellidse Schinus . Scbizonyx Scbkuhria Schoenocaulon Scienida? Scincidas Sciurus . Scolecophagus 379, 385 379, 385 301 ia 81 333 21 21 ,302 26 .1 396 26 98 82, 399 389 40 139 ,211 419 191 403 403 380 218 337 380 380 468 395 296 159 319 284 321 296 398 131 301 403 -201 407 301 391 341 383 379 379 375 405 58-62 34 394 310 436 398 212 418 462 192 192 381 146 383 409 342 104 348 213 1898.] NATURAL SCIENCES OF PHILADELPHIA. 541 Scomber 341 Scornbridae 341 Scopus 497 Scorpaena 344-346 Scorpsenidae 344 Scotophilia 321 Scrophulariaceae 385, 391, 400, 406 Scutellaria ... 39, 310 Sechium 412 Sectilumen .... 271, 276 Seiurus ..... 85, 86 Sedum . . . .28, 302, 403 Selaginella 386 Selasphorus 211 Senecio . 373, 392, 400, 408, 412 Sepsidse 163 Sepsis 163 Serranidae ...... 341 Serranus 341 Sesuvium 378 Shepherdia . - . . 40, 310 Sialia 88, 218 Sibthorpia 406 Silene 410 Siliquaria 59-61 Siphonostoraa 268 Simorhynchus . . 128, 129 Sisymbrium 380 Sisyrinchium . . . 398, 402 Sitta 86 Smyrnium 28 Solanacese 382, 390, 394, 399, 406 Solanum 382, 391, 394, 399, 400, 406 Solea 347 Solecurtus 59-61 Soleidae 347 Solen ... 59, 61, 62, 418 Solenoglyphae .... 108 Solidago . . .34, 306, 385 Somalia 181 Somateria 138 Sophora 354 Sorbus 47, 315 Sparidae 341 Sparisoma 343 Spartina . . .46, 270, 314 Spartocentrum .... 282 Spatula 498 Speotyto .... 209, 354 Sphaeralcea 381 Sphseroides 344 Sphecodes 56 Sphyraena 340 Sphyraenidae 340 Sphyrapicus 210 Spinus .... 83,213, 214 Spiraea .... 26, 49, 301 Spiranthes 398 Spiroceramus 281 Spirostemma 270 Spisula 418 Spizella .... 83, 214 Spondyliosoma .... 342 Squalida? 339 Stachys 405 Stauroneis 422-427 Steganopodes 497 Stegastes 343 Steuanthium 397 Stenodermata 333 Stephanopyxis .... 423 Stercorariidae 130 Stercorarius . . . 130, 131 Sterna 133 Sternobrithes 157 Stevia . 392, 396, 397, 400 Stipa 45, 314 Stratiomyidae 157 Strigilla 62 Stropbina . . 269,271, 279 Struthiolaria 190 Sturnella .... 82, 213 Subulina 284 Succinea 354 Surirella 110 Swertia 36 Sylvania 86 Sympetrum 154 Symphoricarpos . . 49, 400 Synodontidae 340 Synodus 340 Syuceca ....;.. 446 542 PROCEEDINGS OF THE ACADEMY OF [1898. Synthyris 39, 310 Syrnium 80 Syrphidse 159 Syrphus 159 Tabanidse 157 Tabanus 158 Tabulina 470 Tachycineta ... . 84, 216 Tagelus 59-62 Tagetes 391, 392 Talinum .... 386, 388, 412 Tamias 122, 123 Tatua 457 Taxodium 413 Tecoma 386 Teiidse 103, 108 Telephoromyia 74 Tellina 62, 418, 429 Testudinidse 101 Testudo 101 Tethys 193 Tetraodontidse 344 Thalossoma 343 Thalia 412 Thalictruni 403 Thaumasia 268, 270 Thryothorus 217 Thynnus 72 Tigarea 26 Tomelasmus .... 271, 276 Tomigerus 283 Tornatina 418 Tonicella 287 Totanus 139 Toxifera 190 Trachelia 269 Trachinidse 346 Trachinus 346 Trachurus 341 Trachydermon . . . 287, 290 Tradescantia ..... 393, 402 Tramea 143, 144 Triceratium 423 Trichechus 196, 197 Trichotropis 462 Trifolium 24, 299, 380, 403, 404 Trigla 347 Triglidse 347 Trigonia 462, 464 Trigoniarca 462 Trillium 44, 313 Tringa 139 Trithenria 146 Trochilus 81, 211 Troglodytes ... 86, 139, 354 Tropidurus 102 Trypeta 163 Trypetida? 163 Tuba 462, 464 Tupinambis . . .103, 104, 106 Turbo 267 Turbonilla 418, 419 Turdus 87, 218 Turritella . . . 419,462, 463 Tylonycteris 321 Tyrannus 81, 211 Umbelliferaj . . 390, 398, 405 Umbrina 342 Uria 129, 140 Urinator . . 126 Urinatores 495 Urinatoridse 126 Urocoptidse 476 Urocoptis 267, 270, 273, 281, 282 Urophycis 347 Urosalpinx 417, 418 Urostrophus . . . .102, 104 Urticacese 402 Vaccinium 36, 307 Veleda 462 Vendrysia 280 Veniella 462 Venus 418 Veratrum 44, 313 Verbenacese .... 390, 411 Vespertilio 321 Vesperus 321 Viburnum 482-484 Viola 405 Violacese 405 Vireo 84, 85, 216 Volutacea' • 191 Volutida? 192 Volutomitra .... 191, 192 Weldenia 402 1898.] NATURAL SCIENCES OF PHILADELPHIA. 543 Wigandia 373 Xanthomyx .... 229, 230 Xema 132 Xenopicus 210 Xerophyllum .... 44, 313 Yoldia 419 Zaraelodia 84 Zea 413 Zenaidura ... 79, 208, 354 Zexmenia 392 Zinnia 392 Zizania 46, 314 Zonites 67 Zonochroa 178 Zonotrichia 139, 214 Zornia 388, 393 Zygadenus 45, 313 Zygonyx 146 544 PROCEEDINGS OF THE ACADEMY OF [1898. GENERAL INDEX. 1898. Allen, Harrison M. D. and George H. Horn, M. D., pro- ceedings of a meeting held in commemoration of, 11. Arnold, Crawford, announce- ment of death of, 11. Barber, C. M. and T. D. A. Cock- erell. A new weasel from New Mexico, 89, 188. Barr, Martin W., M. D. Idiocy, educationally, 89. Bascom, Florence. Petrographic methods of rock determination, 488. Biological and Microscopical Sec- tion, report of the, 512. Botanical Section, report of the 515. Boyer, C. S. Some new species of diatoms (Plate XXIV), 262, 468. Report of the Bio- logical and Microscopical Sec- tion, 512. Brinton, Daniel G., M. D. The ethnology of the Philippines, 467. Report of Professor of Ethnology, 519. Brown, Stewardson. Report of the Botanical Section, 515. Calvert, Philip P. Odonata (Dragonflies) from the Indian Ocean and from Kashmir, col- lected by Dr. W. L. Abbott, 141. The radula in the squid, 202. Chapman, Henry C, M. D. Notes on the squid, 202. Re- port of Curators, 509. Cockerell, T. D. A. New and little-known bees from Wash- ington State, 50. Committee on Hayden Memorial Award, appointment of, 205. Report of, 338. Committees, Standing, for 1898, 9. Conchological Section, report of the, 513. Conklin, E. G. Environmental and sexual dimorphism in Crepidula(Plates XXI,XXII, XXIII), 262, 435. Cope, Francis R. The summer birds of Susquehanna Co., Penna., 9, 76. Corresponding Secretary, report of, 504. Coues, Elliott, M. D. Notes on Mr. Meehan's paper on the plants of Lewis and Clark's Expedition across the conti- nent, 1804-06, 262, 291. Council and Standing Commit- tees for 1899, 520. Crosse, J. C. H., announcement of death of, 429. Curators, report of, 509. Dall, William H. Synopsis of recent and tertiary Psammobi- idse of North America, 57. On the genus Halia of Risso, 89, 190. DeCamp, Wm. H, announce- ment of death of, 429. Elections during 1898, 521. NATURAL SCIENCES OF PHILADELPHIA. 1898.] Entomological Section, report of the, 514. Fox, William, J. Contributions to a knowledge of the Hyinen- optera of Brazil, No. 4. Thyn- ninse and additions, 9, 72. Contributions to a knowledge of the Hymenoptera of Brazil, No. 5. Vespida?, 429, 445. Synopsis of the United States species of the hymenopterous genus Centris Fabr., 488. Frazer, Dr. Persifor. Glimpses of Russia in Europe, Asia and Asia Minor, 11. General Index, 544. Goldsmith, E. Volcanic rocks of Mesozoic age in Pennsyl- vania, (Plates II, III, IV, V), 90. The petrifaction of fossil bones, 98. Hall, James, announcement of death of, 357. Hamilton, S. Harbert. The occurrence of Marcasite in the Raritan formation of N. J., 479, 485. Harshberger, J. W., M. D, Bo- tanical observations on the Mexican flora especially on the flora of the Valley of Mex- ico, 263, 372. Heilprin, Angelo. Geology and physical geography of the Klondike GoldMiniugRegion, 488. Hough, Garry de N., M. D. The Muscidse collected by Dr. Donaldson Smith in Somali- land, 155,165. Index to Genera, etc., 531. James, J. Wharton. The Enchanted Mesa, 467. Jefferis, Wm. W., appointment as Curator of the William S. Vaux collections, 205. Report on William S. Vaux collec- tions, 512. 545 Johnson, Charles W. Diptera collected by Dr. A. Donald- son Smith in Somaliland, East- ern Africa, 157. New cretace- ous fossils from an artesian well-boring at Mount Laurel, N. J., 429, 461. Jordan, David Starr and James Alexander Gunn, Jr. List of fishes collected at the Canary k Islands by Mr. O. F. Cook, with descriptions of four new species, 338, 339. Judson, Oliver A., M. D., an- nouncement of death of, 202. Keller, Ida A. Notes on the growth of Viburnum lantan- oides (Plate XXV), 479, 482. Letson, E. J. Description of a new Tethys (Aplesia), (Plate VIII), 89, 193. Libbey, William, Jr. The En- chanted Mesa, 467. Librarian, report of, 505. McKean, Thomas, announcement of death of, 155. Marcou, Jules, announcement of death of, 338. Meehan, Thomas. The plants of Lewis and Clark's expedition across the continent, 1804- 1806, 12. Report of the Botan- ical Section, 515. Mercer, Henry C. The bone cave at Port Kennedy and its par- tial examination in 1894, 1895 and 1896, 479. Merriam, C. Hart. Description of three new rodents from the Olympic Mountains, Washing- ton, 351, 352. Miller, Gerrit S., Jr. List of bats collected by Dr. W. S. Abbott in Siam, 262,316. Descriptions of five new Phyllostome bats, 262, 326. A new Chipmunk from Northeastern China, 338, 348. Descriptions of a new 546 PROCEEDINGS OF THE ACADEMY OP genus and species of Microtine rodent from Siberia, 357, 368. Notes on the Arctic Red- backed mice, 357, 358. Mills, Chas. K., M. D. Idiocy, physiologically, 89. Mineralogical and Geological Section, report of the, 517. Moore, Clarence B. Certain ab- original mounds of the South Carolina coast, 262, 263. Cer- tain aborignal mounds of the Savannah River, 262, 263. Certain aboriginal mounds of theAltamaha River, 262, 263. Recent acquisitions, 262, 263. Moore, J. Percy. Hyalodendron navalium, a new genus and species of Euplectillid sponge (Plate XIX, XX), 338, 430. Morris, Charles. On the antiquity of man from the standpoint of evolution, 263. Nolan, Edw. J., M. D. A memo- rial of Dr. Joseph Leidy, 465. Report of RecordingSecretary, 500. Report of Librarian, 505. Officers, Councillors and Finance Committee for 1899, 520. Ornithological Section, report of the, 518. Palmer, T. Chalkley. Errant frustules of Eunotia major, (Plates VI, VII), 89, 110. Perot, Charles P., announcement of death of, and memorial min- ute, 479. Pilsbry, Henry A. The function of the radula, 202. Chitons collected by Dr. Harold Heath at Pacific Grove, near Mon- terey, Cal., 262, 287. A new land snail from Clarion Island, 351, 354. New species of Odon- tostomus from Brazil and Argentina, 429, 471. Margar- ita Sharpii, a new Alaskan gastropod, 479, 486. Report [1898. of the Conchological Section, 513. Report of Professor in Department of Mollusca, 519. Pilsbry, H. A. andE. G. Vanatta. Anatomical notes on certain West American Helices, (Plate I), 67. Revision of the North American slugs : Bin- neya, Hemphillia, Hespera- rion, Prophysaon and Anaden- ulus. (Plates IX, X, XI, XII, XIII, XIV, XV, XVI), 156, 219. Material toward a natural classification of the Cylindrelloid snails (Plates XVII, XVIII), 203, 264. Some Cuban species of Cerion, 465, 475. Rand, Theodore D. The Birds- boro trap quarries, 10. Report of the Mineralogical and Geo- logical Section, 517. Recording Secretary, report of, 500. Report of Biological and Micro- scopical Section, 512. Report of the Botanical Section, 515. Report of the Conchological Sec- tion, 513. Report of Corresponding Secre- tary, 504. Report of Curators, 509. Report of the Entomological Sec- tion, 514. Report of Librarian, 505. Report of the Mineralogical and Geological Section, 517. Report of the Ornithological Sec- tion, 518. Report of Recording Secretary, 500. Report on William S. Vaux Collections, 512. Reports of the Professors, 519. Rhoads, Samuel N. On a small collection of mammals from Northeastern China, 11, 120. 1898.] NATURAL SCIENCES OF PHILADELPHIA. 547 A new grasshopper mouse from New Mexico, 155, 194. Notes on the fossil walrus of Eastern North America, 155, 196. Sandberger, Fridolin, announce- ment of death of, 338. Seale, Alvin. Notes on Alaskan Water Birds, 11, 126. Shallcross, John, announcement of death of, 479. Sharp, Benjamin, M. D. Rock inscriptions in Kauai, Hawai- ian Islands, 203. Report of Corresponding Secretary, 504. Shufeldt, R. W., M. D. Some observations on the classifica- tion of birds, 480, 489. Singerly,Wm. M., announcement of death of, 155. Skinner, Henry, M. D. Report of the Entomological Section, 514. Report of Professor in Department of Insecta, 519. Spill er, Wm. G., M. D. Idiocy, anatomically, 89. Stone, Witmer. On the breeding habits of birds of Eastern Pennsylvania, 155. A study of the type specimens of birds in the collection of the Academy of Natural Sciences of Phila- delphia, with a brief history of the collection, 480. Occur- rence of Oryzomys palustris in Southern New Jersey, 480. Report of the Ornithological Section, 518. Torell, Otto Martin, reception of Hayden Memorial Award, 338. Biographical notice of, 355. Valentine, John K., announce- ment of death of, 11. Van Denburgh, John. The Ger- rhonotus of the San Lucan fauna, Lower California, with diagnosis of other West Amer- ican species, 63. Birds ob- served in Central California in the summer of 1893, 156, 206. Vaux, J. Wain, announcement of death of, 262. Von Ihering, Dr. H. Contribu- tions to the herpetology of Sao Paulo, Brazil.-I, 101. AVarner, Redwood F., announce- ment of death of, 488. Wernwag, Theodore, announce- ment of death of, 262. William S. Vaux Collections, report on, 512. Witmer, Lightner. Idiocy, physiologically, 89. Woolman, Lewis and Charles S. Boyer. Fossil mollusks and diatoms beneath the Dismal Swamp, Virginia and North Carolina. With notes on the diatoms, 11, 414. PROC. ACAD. NAT. SCI. PHILA. 1898. PLATE I. PILSBRY AND VANATTA. ANATOMY OF HELICID/E. CO « U O cc o 5 N o W O z < o o > CO Q J O o PROC. ACAD. NAT. SCI. PHILA. 189S. PLATE III. GOLDSMITH. VOLCANIC MESOZOIC ROCKS. GO O O a: o o N o GO u z < o o > h co Q _J O o PROC. ACAD. NAT. SCI. PHILA. 1898. PLATE VI. f Z s-T? C^^ 3 ^ — =-£. * I US'- 7 <6 \j i i H f PALMER. MOVEMENTS OF EUNOTIA. PROC. ACAD. NAT. SCI. PHILA. 1898. PLATE VII. 2 ' 1 \ / I •* CI Ms > PALMER. MOVEMENTS OF EUNOTIA. PROC. ACAD. NAT. SCI. PHILA. 1898. PLATE VIII. TETHYS PILSBRYI letson. PROC. ACAD. NAT. SCI. PHILA. 189S. PLATE IX. 7ft. .vrii. ?"v*« '* ifcyjii 4 a? V~*^/ i r *^ > j* p. .. » ... ^a; •Vs.' > «fc a .. -**r •' ,Jw*r - V v».J-Jr i-j. '. ■--■* 1 . s .„■ _ $■ ■ 1 ^ j^L* > > " *■- J' *** ■ - "V * 7? « .>-w". ^. .