SECOND SERIES: PULMONATA. iMANUAL OF CONCHOLOGY STRUCTURAL AND SYSTEMATIC WITH ILLUSTRATIONS OF THE SPECIES FOUNDED BY GEORGE W. TRYON, JR. CONTINUED BY HENRY A. PILSBRY, Sc.D., SPECIAL CURATOR DEPARTMENT OF MOLLUSCA, ACADEMY OF NATURAL SCIENCES OF PHILADELPHIA. PHILADELPHIA : PUBLISHED BY THE CONCHOLOGICAL DEPARTMENT ACADEMY OF NATURAL SCIENCES OF PHILADELPHIA. SECOND SERIES: PULMONATA MANUAL OF CONCHOLOGY VOL. XXIV PUPILLID^: (GASTROCOPTIN^E) BY HENRY A. PILSBRY, Sc.D. Special Curator of the Department of Mollusca, Academy of Natural Sciences of Philadelphia PHILADELPHIA : PUBLISHED BY THE CONCHOLOGICAL DEPARTMENT ACADEMY OF NATURAL SCIENCES OF PHILADELPHIA I9I6-I9I8 EARTH SCIENCES UB8ARY PUBLICATION COMMITTEE: HENRY SKINNER, M.D., Sc.D. WITMER STONE, A.M., Sc.D, HENRY A. PILSBRY, Sc.D. WILLIAM J. Fox EDWARD J. NOLAN, M.D. EDITOR : HENRY A. PILSBRY. TREASURER : S. RAYMOND ROBERTS. CONTENTS PAGE Introduction — Terminology of the teeth of Pupillidse vii The family Pupillidge x The subfamily Gastrocoptinge x Descriptions of genera and species — The Gastrocopta group of genera. Genus CH^NAXIS Pilsbry & Ferriss (Arizona) . 1 Genus GIBBULINA Beck (South America) 5 Genus GASTROCOPTA Wollaston 6 North American and West Indian species. . 12 South American species 89, 357 Species of Eastern Asia, Japan and Indo- China 103 Species of Western Siberia and the Euro- pean Tertiary 112 Species of Africa and the Mascarene Is- lands 118, 358 Species of Ceylon, India and Malay Penin- sula 134 Species of the Philippines, Polynesia and Melanesia 140 Australian species 155 Genus BOTHRIOPTJPA Pilsbry (Tropical America) 226 The Hypselostoma-Boysidia group of genera 172 Genus HYPSELOSTOMA Benson (Oriental Re- gion) 175, 360 Genus ANAUCHEN Pilsbry (Oriental Eegion) . . 188 Genus BOYSIDIA Ancey (Oriental Eegion) 192 Genus GYLIAUCHEN Pilsbry (Oriental Eegion) . 210 The Aulacospira-Systenostoma group of genera .... 220 Genus AULACOSPIRA Moellendorff (Philippines). 220 (iii) v CONTENTS. PAGE Genus SYSTENOSTOMA Bavay & Dautzenberg (Oriental Region) 224 The Abida group of genera • 232 Genus FAUXULUS Schaufuss (South. Africa) . . . 234 Genus ODONTOCYCLAS Schlueter (Europe) .... 254 Genus SANDAHLIA Westerlund (Europe) 258 Genus ABIDA Leach (Europe) 262 Genus GRANOPUPA Boettger (Palaearctic Region) 332 Appendix 357 Explanation of Plates 361 Dates of publication, parts 93-96 371 Index . . 373 PREFACE Illustrated monographs of ''Pupa" have been published by Kiister, 1849, and by Sowerby, 1872. In his Monographia Heliceorum, 1848-1877, Pfeiffer included descriptions of the species then known. The last general work is therefore forty years old. Meantime the number of genera and species has greatly increased, and taxonomic ideas have changed so radi- cally that the classification and nomenclature of this volume bear little resemblance to those of former works. Owing to the minute size of many of these shells, the pro- portion of inadequate or erroneous descriptions and of useless or misleading figures in the existing literature is very large. The Gastrocoptinaa, described in the present volume, is the largest of the half-dozen subfamilies of Pupillidae to be con- sidered in this monograph. It is also the most widely distrib- uted; so that species from practically all countries are in- cluded here. The literature of Pupillidse is extensive, since most faunal papers on land snails contain some species. In treating of European and North American forms, therefore, a selection has been made of the references thought most important. To include references and localities from all local lists, especially in Europe, would unduly increase the size of the work; and while the importance of the material is appre- ciated, its collation may properly be left for faunal works, in which the accuracy of the references can be controlled, and the details of distribution worked out, by investigators having the requisite local knowledge. Outside of the European and North American faunas, the author has aimed to give all references of any value, and all localities which have been published, omitting only mere lists and compilations contain- ing no new information or localities. While every care has been taken to omit nothing essential, it cannot be expected that everything of importance has been noted. The author will be grateful for information relating to omissions or errors in this volume. Also for information or (v) VI PREFACE. specimens bearing on the work to follow, upon the Pupillina, OrculwKz, Vertiginince and other groups. Specimens and information used in this volume have been given generously by many zoologists. Part of these favors have been acknowledged in the text, but special thanks are due to — Dr. N. Annandale, Superintendent of the Indian Museum, for a series of Indian Pupillidae. Dr. Paul Bartsch, Curator of Marine Invertebrates, for An- tillean and South American species from the National Mu- seum. Mr. H. C. Burnup, for valuable notes on South African species, with numerous specimens. Dr. Geo. H. Clapp, for forms collected by him in the Baha- mas, Florida and elsewhere. Dr. Wm. H. Dall, for the loan of Galapagos Pupae. Mr. John Farquhar, for South African Pupillidae collected by him. Mr. Charles Hedley, of the Australian Museum, for many specimens of Australian Pupae, and information on several species. Mr. John B. Henderson, for the use of his large series of Antillean Pupillidae. Dr. V. Sterki, for various American species. Mr. B. B. Woodward, who kindly reported on several types in the British Museum and gave other useful notes on the group. Mention should also be made of the gifts, continued through many years, of my constant friends Mr. Jas. H. Ferriss and Mr. Y. Hirase, which have added largely to the material at hand. The firm of Sowerby & Fulton has taken pains to procure for me a number of rare species, not accessible elsewhere. That the Manual is able to continue during these unhappy days, when a considerable part of its support from abroad is cut off, and the difficulties of publication are increased, is due to the interest of the Council and Publication Committee of the Academy, who have steadfastly encouraged the work. H. A. P. INTRODUCTION Terminology of the Teeth of Pupillidce. Though a definite terminology of the teeth of Pupae has been in use for about seventy years by such scholarly author- ities as Pfeiffer, Rossmaessler, Benson and others, many species have been described as though no terminology existed, or using other terms than those of Pfeiffer. This often leaves us in uncertainty as to the meaning, and produces great diver- sity among the original descriptions quoted or translated in this monograph. It has not been practicable to reduce the descriptions to a common terminology, since although one can usually tell what teeth are described, yet in too many cases there is uncertainty. Authors have often described the posi- tion of each tooth elaborately — a waste of ink, since the posi- tions are practically invariable except in the degree of immer- sion. The use of the terms labrum and labium (labral and labial) has also led to confusion in many cases; as these terms are superfluous they may be abandoned with advantage. Lamellae Supracolumellar - — -- N^- Columellar Subcolumellar £7lira Suprapalatal f- — Upper palatal — -^Tr~^ Interpalatal Lower palatal "^ Infrapalatal Basal FIG. 1. Terminology of lamellae and folds. (vii) VU1 INTRODUCTION. The principal folds or teeth have definite positions and are homologous throughout the group. The terminology now in use is an amplification of that of Pfeiffer, 1848 (Monographia Heliceorum, ii, p. 300). All teeth or laminae upon the parietal and columellar mar- gins are called lamella, whatever their shape; all within the outer lip are called folds or plica. In the following table the names of the secondary, usually variable teeth, are italicized. fTwin lamella, parallel lamellae. ") Lamella angu- Angular lamella, spiral lamella. laris and I".. {uujLcuu wan Parietal lamella. { parietales. Plis Infraparietal lamella. J supe'rieurs TT ,1 f Supracolumellar lamella. ~] Lamellae I Columellar lamella. [ columellares. I Subcolumellar lamella. ) Spindelfalten f Sutured and Suprapalatal folds. "] w:*i, •„ *u Upper palatal fold. | Plicae palatales Within the Interpalatal folds. and Plica mar^ns Lower palatal fold. basalis. Infropalalal folds. Gaumenfalten. L Basal fold. J A suprapalatal fold, when situated close below the suture, is often called a sutural fold. The parietal and columellar lamellae and the lower palatal fold usually are at the angles of an equilateral triangle, when the said fold is not deeply immersed. This is useful in fixing the identity of the plicae, not always clear in multidentate forms, or those in which there has been extensive reduction of teeth. Some authors have designated the folds within the outer lip by number, 1, 2, 3, etc., from the upper downwards. This serves very well for descriptive purposes, but the homologies of the folds are entirely lost, since the upper one may be a sutural, a suprapalatal or an upper or lower palatal. This also affects the identity of the folds below the first. The second fold in one species may be homologous with that called first or third in another. TOOTH FORMULAS. — Several modes of briefly stating tooth INTRODUCTION. x arrangements have been proposed. The simplest gives merely the number of teeth on each margin ; thus 2-1-3 denotes two teeth on the parietal wall, one on the columellar and three in the outer and basal margins. If more definite information is to be conveyed, the initials of the teeth may be used, those representing concrescent or united teeth being enclosed in parentheses, as follows: a. Angular lamella. s. Suprapalatal fold. p. Parietal lamella. w. Upper palatal fold. ip. Infraparietal lamella. i. Interpalatal fold, c. Columellar lamella. I. Lower palatal fold. sc. Subcolumellar lamella. &. Basal fold. Thus, (a.p.)-c-u.l.b. denotes the presence of united an- gular and parietal lamellae, a columellar lamella, upper and lower palatal and basal plicae. While more cumbersome than the numerical formula, this has the advantage of showing what teeth are present, information more important than the mere number. The practical utility of such formulas is open to question. Space is saved, but at the expense of those who use the work. Family PUPILLIDJE Turton. Pupttlada TURTON, Manual of the Land and Fresh-water Shells of the British Islands, 1831, p. 97. Pupidce of most authors. A synopsis of the general classification of Pupillida with keys to genera will be deferred until the last volume treating of the family, when the details shall have been worked out. A provisional list of the subfamilies here given may serve for reference temporarily. A few of the leading genera are men- tioned as examples. GASTROCOPTIN.E : Gastrocopta, Hypselostoma, Abida. PUPILLIN/E : Pupilla, Pupoides. PAGODININ^E : Pagodina, Aspasita. ACANTHINULIN^E : Acanthinula. VERTIGININ.E : Vertigo, Nesopupa,, Trancatellina. ORCULIN.E : Orcula, Lauria. STROBILOPSIN^ : Strobttops. The family has been given rather wide limits, and it may be that part or all of the subfamilies will eventually be elevated to families; yet our knowledge of the soft anatomy of the group is merely fragmentary, and it seems best in a system- atic work not to go too far ahead of the evidence. At present it is more important to demonstrate the affinities existing be- tween the genera and other groups. At least four of the subfamilies contain Helicoid forms. In three of them they are associated with lengthened or cylindric genera, but the Strobilopsmtz contains only conic and Helicoid species. Except Hypselostoma, these Helicoid genera have usually been placed with the Helicidae. Subfamily GASTROCOPTIN^ Pilsbry. Pupillidae with the lower tentacles developed, though gen- erally short, the shell without lamellae or plicae in the neanic stage; typically having angular, parietal and columellar la- mellae and two or more palatal plicae. PUPILLJIXE. XI This subfamily is related to the Pupillincz (q. i>.), but dis- tinguished by the different arrangement of apertural teeth of typical forms in all the genera. As most genera have also series which are catamorphic or degenerative in teeth, differ- ential diagnosis of these subfamilies are not now practicable. Nevertheless, a study of the more fully toothed forms of each genus shows that the subfamily is a natural group. The genera of Gastrocoptince fall into four collateral series, as follows: I. Small (length 4 mm. or less, 4 to 6~y2 whorls), thin, cor- neous or brown. THE GASTROCOPTA GROUP. Pupiform; angular and parietal lamellae converging or united. Gibbulina, p. 5. South America. Cluznaxis, p. 1. North America. Gastrocopta, p. 6. Nearly world-wide. Bothriopupa, p. 226. Tropical America. THE HYPSELOSTOMA-BOYSIDIA GROUP. Pupiform, conic or depressed, last whorl tangential (p. 172). Hypselostoma, p. 175. Oriental. Boysidia, p. 192. Oriental. Gyliauchen, p. 210. Oriental. THE AULACOSPIRA GROUP. Helicoid, the last whorl not tangential (p. 220). Aulacospira, p. 220. Philippines. Systenostoma, p. 224. Indo-China. II. Mainly larger, more solid shells of cylindric, conic or tur- rited form, usually with more whorls, which are more closely coiled than in the preceding groups. THE ABIDA GROUP (p. 232). Fauxulus, p. 234. South Africa. Odontocyclas, p. 254. Eastern Alpic region. Sandahlia, p. 258. Pyrenees. Abida, p. 262. Europe. Granopupa, p. 332. Mediterranean countries. Chondrina (Vol. XXV). Europe, Morocco. Xll Distribution. The discussion of distribution is deferred until the conclu- sion of the monograph. The genera of Gastrocoptinse range as follows : Palaearctic Region: Gastrocopta, Odontocyclas, Sandahlia, Abida, Granopupa, Chondrina. Ethiopic Region : Gastrocopta, Fauxulus. Oriental Eegion : Gastrocopta, Hypselostoma, Boysidia, Gy- liauchen, Aulacospira and Systenostoma. Australian Region : Gastrocopta. Nearctic Region : Gastrocopta, Chaenaxis. Neotropic Region : Gastrocopta, Bothriopupa, Gibbulina. Gastrocopta is thus the only genus found on all the conti- nents. All the others are confined to single faunal Regions. MANUAL OF CONCHOLOGY. DESCRIPTIONS OP GENERA AND SPECIES. Genus CHJENAXIS Pilsbry & Ferriss. Ch&naxis PILS. & FERR., Proc. A. N. S. Phila., 1906, p. 145. The shell is cylindric or slightly tapering, having a large, hollow axis, open below, and about one-third the total diam- eter of the shell; lamellae and plicae substantially as in the typical group of Gastrocopta, the angular and parietal lamellae being wholly concrescent into one lobed lamella; columellar lamella well-developed, horizontal; a deeply entering supra- columellar lamella is sometimes developed. Upper and lower palatal plicae and basal plica present. Type C. tuba (P. & F.). The known species live in Arizona. A broadly open umbilicus at all stages of growth is un- usual in Pupttlidcz. Its development in Chcenaxis seems suffi- cient ground for generic rank, even though the rest of the organization is essentially that of Gastrocopta, at least so far as the shell is concerned. The position of the basal plica, as well as the structure of the wholly concrescent angulo-parietal lamella, show that Chcenaxis was derived from the southern typical Gastrocopta stock, not from the northern Albinula and Sinalbinula group of the genus. Key to Species. a. Last whorl having a long cord-like spiral lamella on the axis. b. Internal lamella ~L~y2 to 2 whorls long. C. intuscostata, no. 2. b1. Internal lamella about 1 whorl long. C. i. brevicostata, no. 2a. a1. Last whorl without a long spiral lamella inside. C. tuba, no. 1. 6 CH^ENAXIS. 1. CILENAXIS TUBA (Pilsbry & Ferriss). PL 9, figs. 1, 2, 3. The shell is eylindric with a short terminal cone, openly umbilicate, the umbilicus nearly one-third the diameter of the shell, its large cavity penetrating to the first whorl. Pale brown, smooth, marked with light growth-lines. The apex is obtuse. Whorls 5%, convex, the last three forming the cylin- drical part of the shell; last whorl is compressed laterally and obtusely angular around the umbilicus, scarcely straight- ened in front; in basal view it expands broadly at the aper- ture. The aperture is shortly oval, the peristome thin, con- Figs. 1-4. Ch&naxis tuba, type. tinuous and broadly expanding. The angular and parietal lamellae are concrescent into one long bilobed lamella. The columellar lamella is rather massive, having a sloping callous or a lower rounded tooth on its lower side; becoming a low cord, it continues inward to the back of the last whorl (pi. 9, fig. 3). The upper and lower palatal and basal folds are CH^ENAXIS. 3 situated as usual, the lower palatal a little more deeply placed and longer than the others, and there is often a small inter- palatal denticle. There is no supracolumellar lamella. Length 3.3, diam. 1.6 mm. (original figure, and pi. 9, fig. 1). Length 3, diam. 1.5 mm. (smallest in type lot). Arizona: Drift debris of the San Pedro Kiver, one mile east of Benson (type locality; Ferriss and Pilsbry) ; near Dos Cabezas Cave, west of the Dos Cabezas Range, Cochise Co. (Mort Wien) ; Tumamoc Hill, under stones, and in flood debris at the west end of Congress St., Tucson (Pilsbry and Ferriss) . Bifidaria tuba P. & F., Proc. A. N. S. Phila., 1906, p. 145 ; fig. 6; 1910, p. 144; 1915, p. 390. This species lives in the arid foothills and low mountains of the Lower Sonoran zone, not in the higher mountains. It is rare in the debris of the San Pedro River, probably washed in from the foothills of the Whetstone Mountains, or possibly the hill country about Tombstone. A few specimens were found under stones on Tumamoc Hill, and more, together with C. intuscostata, in flood debris at the foot of the hills at the west end of Congress St., Tucson. These specimens have a small supracolumellar nodule, some- times two (pi. 9, fig. 3), but no spiral lamella running in- ward from it, though there is a shallow spiral depression, scarcely to be called a furrow, on the internal axis. 2. CH^NAXIS INTUSCOSTATA (Clapp). PL 9, figs. 6 to 9. The shell is openly umbilicate, cylindric, usually longer than C. tuba, and composed of about 6% whorls ; light brown. Last whorl, aperture and teeth as in C. tuba, but the supra- columellar lamella is almost invariably present and visible from in front, and the subcolumellar nodule is conspicuous. Inside there is a strong, cord-like lamella about 1% to 2 whorls long, terminating near and behind the supracolumel- lar nodule. Length 3.85, diam. 1.65 mm.; 6% whorls (fig. 9). " Length 4.2, diam. 2 mm.; 6% whorls (largest )." CH^ENAXIS. "Length 3.25, diam. 1.8 mm.; 5% whorls (smallest nor- mal shell)." Arizona: foothills of the Plmnosa Range,, about 8 miles east of Quartzsite, Yuma Co. (Geo. S. Hutson) ; debris of Salt Eiver, Tempe, Maricopa Co. ; flood debris at west end of Congress St., Tucson (Pilsbry and Ferriss). Bifidaria tuba subsp. intuscostata CLAPP, Nautilus, xxii, Dee. 1908, pp. 76, 96, pi. 7, figs. 1-11. The main distinctive character of this species is the long, spirally ascending supracolumellar lamella, which is wanting in C. tuba. It is also, in the main, longer and more cylin- drical than tuba. At Tucson it occurs with the latter in storm debris apparently washed out of the Tumamoc Hills. Dr. Clapp has figured several curious abnormal shells found in the original lot. Figs. 5-8. Abnormal specimens of C. intuscostata. The specimens from Tucson and Tempe are typical in struc- ture. It is rare at Tempe, where the largest taken measures, length 4, diam. 1.7 mm. 2a. Form brevicostata, new form. PL 9, figs. 4, 5. The shell is smaller and tapers more upwards than B. intuscos- tata, and the spiral supracolumellar lamella is only about one whorl long. Length 3.25, diam. above aperture 1.6 mm. Tempe, Arizona, in drift of Salt Eiver (Pilsbry and Fer- riss, Ashmun). A fragmentary specimen of this was figured in Proc. A. N. S. Phila., 1906, p. 146, fig. 7. GIBBULINA. 5 2b. Specimens from the Eagle Tail Mountains, 12 miles north of Kofa, Yuma Co., in moist places among piles of loose rock covered by decayed cactus, elevation about 2000 ft. (G. S. Hutson), and also one of those opened from Tucson, have the internal lamella only about a whorl long or less, but they have the cylindric shape and well-developed supracolumellar nodule of intuscostata. It is an intermediate form between intuscostata and brevicostata, but whether racially distinct I am not prepared to say. Genus GIBBULINA Beck. Gibbulina BECK, Index Molluscorum, 1837, p. 81. — GRAY, P. Z. S., 1847, p. 176 (P. infundibuliformis selected as type). Infundibularia PFEIFFER, Malak. Blatter, xxiii, 1876, p. 213 (monotype P. infundibuliformis Orb.). The shell is minute, broadly umbilicate, conic, thin, the whorls (6 in the type species) convex, of small caliber. Aper- ture small, lateral, oblong, obstructed by a large, deeply en- tering parietal lamella ; peristome expanded and thick. Type G. infundibuliformis. The status of this Bolivian group is uncertain, but the known characters, so far as they go, suggest that it may be a derivative of Gastrocopta, either directly related to Ch&naxis or possibly Immersidens, or a modification parallel to the former. If so, it will probably prove to have deeply immersed columellar and palatal teeth. As the type specimens of the only species are lost, these questions must remain in abeyance. Gibbulina was established by Beck as a subgenus of Pupa with the following species : G. infundibuliformis (d'Orb.). G. palanga (Fer.). G. lyonetiana (Pallas). G. iulus B. G. pagoda (Fer.). G. palangula (Fer.). G. filosa (Valenc.). G. modiolus (Fer.). G. inflata (Valenc.). G. modiolina (Fer.). G. sulcata (0. Mull.). G. versipolis (Fer.). From these, Gray selected the first, G. infundibuliformis as type, in 1847. This invalidates the subsequent general use of the name Gibbulina for a group of Mascarene Streptaxidce. 6 GIBBULINA, GASTROCOPTA. GIBBULINA INPUNDIBULIFORMIS (Orbigny). PL 28, figs. 5, 6. Shell very short, conic, thin, striate, provided with a very large, funnel-shaped umbilicus, in which a large part of each whorl may be seen. Spire conic, short, with a rather obtuse summit, composed of 6 swollen whorls, separated by a strongly marked suture. Aperture entirely lateral to the axis, oblong and oblique, provided with a strong tooth or elevated lamella which penetrates into the interior; it is situated on the pari- etal wall. The margins of the lip are thick and a little re- flected. Color, uniform grayish. Length 2.5, width 1.5 mm. Distribution. — Bolivia, at a place called Pampa Ruis, Province of Laguna, on the last foothills of the eastern slope of the Bolivian Andes, under stones and moss, on precipitous ridges. Helix infundibuliformis ORB., Mag. de Zool., 1835, p. 21. — Pupa infundibuliformis ORB., Voyage dans 1'Amerique Meri- dionale, p. 323, pi. 41 bis, f . 7-9. — PFEIFFER, Monogr. Hel. Viv., ii, 331. This remarkable snail is known only by d 'Orbigny 's de- scription and figures. Genus GASTEOCOPTA Wollaston. Gastrocopta WOLLASTON, Testacea Atlantica, 1878, p. 515, for Pupa acarus Bens, and Pupa gorgonica Dhrn. Leucochilus BOETTGER, in von Martens, Conchologische Mittheilungen, I, 1881, p. 64. Not LeucochUa von Martens, 1860. Bifidaria STERKI, in Pilsbry, Proc. Acad. Natural Sciences of Philadelphia, 1891, p. 315, for P. contracta and P. servilis. —STERKI, Nautilus VI, p. 4, 1892, and p. 99, 1893.— PILSBRY, Proc. A. N. S. Phila., 1900, p. 590.— DALL, Nautilus XVII, p. 116, 1904, type B. servilis Gld. Includes also Eubifidaria, Albinula, Vertigopsis and Prwa- tula, Sterki, 1893. Immersidens Pilsbry and Vanatta, 1900. The shell is rimate or perforate, cylindric or ovate-conic, having angular and parietal lamellae more or less completely united into one biramose, bifid, lobed or sinuous lamella (or rarely the angular lamella is wanting). Columellar lamella GASTROCOPTA. 7 present; palatal folds developed (except in B. corticaria). Lip well expanded. The foot is short; tentacles are rather short but distinct. The sole is not divided longitudinally, and in progression shows few muscular waves over its whole width. Type, G. acarus (Bens.). Distribution, nearly world- wide, in tropical and temperate regions, but wanting in the recent European fauna. Gastrocopta is essentially a hexodont Pupillid of oblong- conic, subcylindric or ovate shape, in which the angular and parietal lamellae converge and are connected by a callus in- wardly, or become completely concrescent into a single sin- uous lamella; the shell being small, thin, usually corneous, and without lamellae in youth. The affinities of the species are determined by the mode and degree of specialization of the lamellae and plicae. Spec- ialization has been in two directions, which might be termed negative and positive : (1) In some forms the teeth have been reduced in size and number. Thus Privatula (G. corticaria) has lost the palatal and basal plicae; in Vertigopsis (G. pentodon) the lamellae of the parietal region have degenerated. (2) In other forms the lamellae, and more rarely the plicae, are enlarged and specialized in shape, producing very com- plicated apertures. In either series, accessory lamellae and plicae may be de- veloped; they have little significance. Many species of Gastrocopta have the shell daubed with dirt, attached by the mucus of the animal. Bothriopupa has the same habit, but not our other American genera such as Pupoides, Pupilla and Vertigo. Species and individuals are most numerous on limestone terranes, or where the rock con- tains considerable lime, living under stones or wood in grassy, often sunny places, or in the shade on leaves and dead wood. G. corticaria is commonly found on the trunks of trees, not far from the ground. Gastrocopta approaches more nearly to a world-wide dis- tribution than any other genus of the family Pupillidce. If 8 GASTROCOPTA. we include Europe, where species existed from Oligocene to Pliocene times, it inhabits every continent, Polynesia and Hawaii, though in these Pacific islands the few species are apparently importations during the human period. North- ward Gastrocopta does not quite reach the 53d parallel, fall- ing far short of the northward range of Pupilla and Vertigo. The absence of species on the American west coast is notable. NOMENCLATURE. — Species of the genus under consideration formed part of the subgenus Leucochila of von Martens (Die Heliceen, 1860, p. 296), which was a heterogeneous group, a species of the genus Pupoides being designated as type. Dr. O. Boettger of Frankfurt, in 1881, was the first to call attention to the composite character of Leucochila. We owe to him the first recognition that Pupa armifera and its allies form a separate genus, which he proposed to call Leuco- chUus. Zoologists at the present time are not agreed as to whether such names as LeucochUus and Leucochila are to be considered distinct; many refuse to accept generic terms dif- fering only in gender termination from prior names, while others hold that they are available. Until some consensus of opinion is reached on this point, and a ruling thereon formu- lated by the International Commission on Zoological Nomen- clature, such similar terms are to be avoided. LeucochUus Boettger has been adopted by most German authors who have treated of the genus. In America the spe- cies were left in Leucochila Martens until Dr. V. Sterki, in 1891-2, proposed the term Bifidaria, which has been used in practically all subsequent American work on the genus. On account of the impossibility of determining whether LeucochUus will eventually be ruled to be a valid name or a homonym, I am reviving the term Gastrocopta Wollaston, 1878, which has three years priority over LeucochUus. Wol- laston seems to have had no adequate idea of the limits or characters of his group ; but his first species, Pupa acarus Bens., which I select as the genotype, is closely related to the type of Bifidaria, Pupa servUis Gld. AFFINITIES. — In both Asia and America there are several genera having the essential apertural structure of Gastro- GASTROCOPTA. 9 copta, but differing by the development of other special fea- tures of shape, umbilical region, or the like. They are un- doubtedly local or regional derivatives of the old parent genus Gastrocopta. In eastern Asia we have Boysidia, and Hypse- lostoma; in America, Ch&naxis, Bothriopupa, and perhaps Gibbulina, all branches of the Gastrocopta trunk. As more remote relatives, collateral genera which probably descended from the same Mesozoic stock as Gastrocopta, we may men- tion Fauxulus, Odontocyclas and Abida (Torquilla). PAL^EONTOLOGIC HISTORY. — As fossils, the Gastrocopts are known only in the tertiaries of Europe. In the middle Oli- gocene of Germany representatives of two subgenera, Albi- nula and Sinalbinula, appear, presumably from an Asiatic or Asiatico-American center of dispersal. Both continue in abundance throughout the Upper Oligocene, Miocene and Pliocene, in numerous specific mutations, but without much structural progress. The fossils known throw no light on the origin of the genus, since at least two of its minor divisions had already been characteristically evolved prior to the earliest appearance now known. The origin of the genus must have been far earlier, Eocene or possibly Cretaceous. Further notes, with illustrations, may be found in the section treating of European species. DISPERSAL. — The migrations of so old a group as Gastro- copta cannot be traced with any degree of certainty until its paleontologic history is better known. It appears likely that the main evolution of the group was in Holarctica, and espec- ially in eastern Asia and North America, whence early emi- grants penetrated into Europe and Australia, and later ones into tropical America. In Australia the species remain rather primitive in structure of the parietal and columellar lamellae, the angular lamella being scarcely or but weakly united with the parietal, even in the specialized group Australbinula. None have the wholly concrescent lamellae of the progressive Pliocene and recent Holarctic forms. This looks like an early Tertiary radiation to that area. In South America the Pupillidae (Gastrocopta, Immersidens, Pupoides) are closely related to those of the Antilles and southern North America, 10 GASTEOCOPTA. and in exactly the same stage of evolution, evidently indi- cating a late Tertiary dispersal over this area. Excepting the Australian Australbinula, all of the highly specialized Gastrocoptoid groups, such as Hypselostoma, Im- mersidens, Ch&naxis, and the more complex Albinulas, are in eastern Asia and North America. There seems no reason (and certainly there is no evidence) for believing that any of them arose in parts of the world remote from their present areas. The chiefly middle and South American and African dis- tribution of the typical (acarus and servilis) group of Gas- trocopta is somewhat problematic, and is perhaps traceable to an earlier radiation than the groups considered above. It does not connect readily with the other stocks. In Polynesia the extraordinarily wide distribution of G. pediculus and lyonsiana, seems>to me explicable only by the supposition that the former was carried by the Polynesian islanders ; it occurs also in Micronesia, Melanesia and the East Indies. G. lyon- siana may have been spread later, by nineteenth-century commerce. SUBDIVISIONS OF GASTROCOPTA. — The species will be grouped geographically in the following account, as this is more con- venient in practical use than a strictly systematic sequence. I. North American and West Indian species (nos. 1 to 25). II. South American species (nos. 26 to 37). III. East Asiatic species, Japan to Indo-China (nos. 38 to 45). IV. Species of Western Siberia and Europe (nos. 46 to 64). V. African and Mascarene species (nos. 65 to 76). VI. Species of Ceylon, India and the Malay Peninsula (nos. 77 to 85). VII. Insular species, East Indies, Melanesia, Micronesia, Polynesia, Hawaii (nos. 86 to 94). VIII. Australian species (nos. 95 to 106). GASTROCOPTA. 11 Snbgenera of Gastrocopta. ALBINULA Sterki. Whitish forms with a palatal callous and palatal plicae. The inner end of the parietal lamella curves towards the periphery, and (except in G. holzingeri) the anterior end is concrescent with the angular lamella. Inner end of the columellar lamella curves downward. Type G. contracta (species 1 to 3, 46 to 51). SINALBINULA Pils. Whitish, with plicse on a palatal cal- lous. Parietal lamella straight inside, or curving towards the columella, its anterior end usually free, but sometimes the angular and parietal lamellae are concrescent into a single sinuous lamella. Columellar lamella horizontal, or with the inner end curved downward. Type G. armigerella (species nos. 38 to 45, 52 to 65, etc.). VERTIGOPSIS Ckll. and Sterki. Whitish, with palatal plicse and usually with a palatal callous. Parietal lamella small, short and straight, the minute angular concrescent with it or wanting. Columellar lamella horizontal or having the inner end decurved. Type G. pentodon (species 4 to 7). AUSTRALBINULA Pils. Whitish forms with palatal plicse but no palatal callous. Angular and parietal lamellae diverging in front, the parietal curving towards the columella within. Columellar lamella steeply running upward within. Type G. rossiteri. PRIVATULA Sterki. Whitish, without palatal callous or plicae; angulo-parietal and columellar lamellse very small. Type G. corticaria (species no. 15). IMMERSIDENS Pils. & Van. Whitish or cinnamon shells with palatal plicae but no palatal callous. Parietal lamella curving towards the periphery at its inner end, diverging from the angular anteriorly, in form of a reversed letter "y". Columellar lamella horizontal or decurved at the inner end. Basal plica transverse to the cavity when present. Type G. ashmuni (species nos. 8 to 14, 34 to 36). GASTROCOPTA Wall. Whitish or cinnamon shells with pala- tal plicse but no palatal callous. Angular and parietal lamellae concrescent into a single sinuous lamella, which is rarely a little forked anteriorly. Columellar lamella short, 12 GASTROCOPTA, NORTH AMERICA, WEST INDIES. horizontal, or with a callous below the inner end. Palatal plicae unspecialized, the upper and basal small or sometimes wanting; the basal not subcolumellar in position. Type G. acarus (species 16 to 33, 66 to 78, 86, 87). The interrelations of the subgenera, so far as now under- stood, may be roughly indicated by a diagram: Albinula Australbinula Vertigopsis Sinalbinula I Immersidens- Privatula •Gastrooopta I. NORTH AMERICAN AND WEST INDIAN SPECIES. Temperate North America has by far the most diversified Gastrocopta fauna of any continent, five subgenera being represented. Three of these, Albinula, Vertigopsis and Pri- vatula, are notable for their specialization and the small number of species. Key to Subgenera. a. Teeth of the parietal wall small or minute. &. Palatal plicae present. Subgenus Vertigopsis, spe- cies nos. 4 to 7. 61. No palatal plicae or callous. Subgenus Privatula, species no. 15. e1. Teeth of the parietal wall moderately or well developed. b. Palatal plicae standing on a white callous; aperture nearly filled by the large teeth. Subgenus Albinula, species nos. 1 to 3. 61. Palatal plicae not joined by a callous. c. Angular and parietal lamellae diverging for- ward, the whole like a reversed (mirrored) letter "y". Subgenus Immersidens, species nos. 8 to 14. c1. Angular and parietal wholly concrescent into a sinuous lamella, or with the parietal pro- jecting very little forward. Subgenus Gas- trocopta, species nos. 16 to 25. GASTROCOPTA, NORTH AMERICA, WEST INDIES. 13 Keys to the species will be found under the subgeneric heads. Subgenus ALBINULA Sterki. Albinula STERKI, Nautilus, vi, 1892, pp. 4, 101, type P. contracta. — Leucochilus BOETTGER, Conchol. Mittheil., i, 1881, p. 64, type Pupa armifera. Not Leucochila von Martens, 1860. Whitish-translucent Gastrocoptas having the inner end of the parietal lamella curved towards the periphery; angular lamella well developed, concrescent in varying degree with the parietal; the palatal plicae stand upon a white palatal callous, and a suprapalatal plica is usually developed. Ex- cept in G. armifera,, the columellar lamella is horizontal in front and curves towards the base within. The lip is thin and expanded. Type G. contracta (Say). Distribution, North America except the Pacific slope ; Oligocene to Pliocene of Europe. If names differing from prior generic terms only in gender are acceptable, Leucochilus will replace Albinula for this sub- genus. In America, the species of Albinula are few and strongly differentiated from one another by the structure of the pari- etal and columellar lamellae, which can be seen fully only by breaking away the back or base of the shell. Albinula is peculiar by the usual development of a suprapalatal plica; a fold which is never found in Immersidens or the typical group of Gastrocopta. It is related to Sinalbinula and its derivative Vertigopsis, but had already been differentiated from these groups in the Oligocene, when the group first appears. The very small number of recent species of Albi- nula (3), and the fact that in Europe the group became ex- tinct after a long series of mutations without much structural change, probably indicates that the subgenus is relatively inflexible and inadaptive, and now nears final extinction; yet two of the recent species are widely spread and abundant snails in eastern North America. Immersidens and Gastrocopta (restricted) extend from the 14 GASTROCOPTA, NORTH AMERICA, WEST INDIES. warm temperate parts of North America across the tropics to Argentina, while Albinula has not penetrated into South America. The two or three Mexican forms of Albinula and Vertigopsis are northern species which have apparently migrated southward rather recently, as they have not been differentiated from the northern stocks. Known Albinulas are from two widely separated regions, eastern North America and central and western Europe. These may be looked upon as the extreme eastern and west- ern herds of an Albinula stock once (Lower Oligocene or earlier) spread over western America and northern Asia, regions where it is now extinct. As we would expect in so ancient a group, the few recent species are structurally iso- lated, representing the termini of as many collateral phyletic series. The groups are as follows : Series of G. armifera (species no. 1). Recent, eastern North America. Series of G. quadriplicata (species nos. 46 to 51). Middle Oligocene to Pliocene, Europe. Series of G. contract a (species no. 2). Recent, eastern North America. Series of G. holzingeri (species no. 3). Recent, eastern North America. Key to American Species. a. Angulo-parietal lamella with lobed, sinuous edge, not much bent and not forked anteriorly; shell large, 3.3 to 4.5 mm. long. G. armifera, no. 1. a1. Angulo-parietal very long, bent L-shaped; shell ovate- conic, 2.3 to 2.5 mm. long. G. contracta, no. 2. a2. Angulo-parietal lamella forked in front; shell cylindric, about 1.75 mm. long. G. holzingeri, no. 3. Series of G. armifera. The armifera group is distinguished by its large, oblong shell and the columellar armature. There is a thick, obliquely descending or protractive lamella on the axis, which recedes again towards the base (pi. 1, fig. 3). This is variously modi- fied in the several races. Sometimes the forwardly descend GASTROCOPTA, NORTH AMERICA, WEST INDIES. 15 ing portion is strongly developed, as in clappi (pi. 1, figs. 7-9), and again the descending portion may be very much reduced, and the retracted lower limb emphasized, as in abbreviates (pi. 2, fig. 3) ; the last approximating somewhat to the structure of typical Albinula (pi. 2, fig. 12, G. con- tract a) . The angular lamella is sigmoid and entirely concrescent with the anterior end of the short, nearly straight parietal (pi. 1, fig. 2 ; pi. 2, fig. 2). There is a weak or well-developed lateral callous on the peripheral side of the parietal at its inner end, homologous with the lateral bend in G. contracta, or there may be the very weak trace of such a bifid structure as I have figured for G. dupuyi. This is best shown in pi. 1, figs. 2 and 11. Gastrocopta armifera and its allies, we may conclude, are related to G. contracta, but are less specialized, retaining more of the structure of European Tertiary species. 1. GASTROCOPTA ARMIFERA (Say). PL 1, figs. 1 to 4. The shell is perforate and rimate, oblong, the summit ob- tusely conic; thin, paraffine-white, glossy, weakly marked with very oblique, irregular growth-striaB. Whorls about 6^, moderately convex, the last compressed around the axis. Aperture irregularly rounded. Peristome thin, well ex- panded, the margins approaching, often (and typically) con- nected by a short callous with raised edge across the parietal wall. Angular lamella joined to the outer lip near its inser- tion, united with the parietal lamella, its summit projecting as a short spur on the right side. The columellar lamella, as seen in a shell broken to show the interior (figs. 3, 4), is sub- vertical, advancing slightly downward, then retracted towards the base; giving off a short, horizontal branch in front, and visible in the aperture. Basal lamella is low and often in- conspicuous. Palatal plicas stand upon a white callous ; lower palatal plica short, entering, the upper one shorter; a small suprapalatal tubercle stands above it. Length 4.4, diam. above aperture 2.2 mm. Pupa armifera SAY, Journ. Acad. Nat. Sci. Phila., II, p. 16 GASTROCOPTA, NORTH AMERICA, WEST INDIES. 162, 1821. BINNEY, Man. Amer. Land Shells, p. 325, 1885.— GOULD, Boston Journal Nat. Hist., iii, p. 400, pi. 3, f. 10. — PFR., Monogr. Hel. Viv., ii, 357, vi, 329. — Bifidaria armifera Say, STERKI, Nautilus, xiii, 1909, p. 52, with var. interpres (p. 52), and varr. similis, affinis and abbreviates (p. 53). — WALKER, Occ. Pap. Mus. Zool. Univ. Mich., No. 15, 1915, pp. 5, 9, 10. — Pupa armigera Say, POTIEZ ET MICHAUD, Gale- rie des Mollusques, i, 1838, p. 159, pi. 16, f. 1, 2 (Pittsbourg). — BINNEY, in Warren's Prelim. Rep. on Expl. in Nebraska and Dakota in the years 1855-57, reprint, 1875, p. 107 (Fort Berthold). Eastern United States and Canada: Quebec to northern Florida, west to Bed Deer, Alberta, Dakota, near Boulder, Colorado, Lincoln Co., New Mexico, and the mouth of the Pecos Eiver, Texas. Type locality, Pennsylvania; type no. 11624 A. N. S. P. This species is easily recognized by its large size, oblong shape, the spermaceti or paraffine tint and large teeth. In life the shell is daubed with dirt. It inhabits almost the whole country east of the continental divide, but is lacking in southwestern New Mexico, southern Texas, southern Flor- ida, and the higher parts of the Alleghany Mountain system. It prefers limestone districts. This is much the largest Gastrocopta known. Say's types were not located more exactly than "Pennsylvania". PI. 1, fig. 1 is the type specimen. I select Germantown, Philadel- phia, as the type locality, the specimens from there agreeing exactly with Say's. The columellar lamella, as seen in a view in the back (pi. 1, fig. 3), is most prominent at the lower third. From this prominence a short horizontal branch runs forward (pi. 1, fig. 4), below which the lamella recedes. The peristome is either continued as a thread across the pari- etal wall, or the interruption is short. The usual variation in size, in the type locality, is from 4 to 4.6 mm. long, 2 mm. wide above aperture. The short individuals, having about the same diameter as the long ones, are quite different in contour, being oval, while the long shells are cylindric. The basal fold is sometimes distinct, though low, as in pi. GASTROCOPTA, NORTH AMERICA, WEST INDIES. 17 1, figs. 3, 4, but usually it is less conspicuous, as in fig. 1. Shells agreeing well with the types are to be found over nearly or quite the whole range of the species, but there are also several incipient races which have been defined by Dr. Sterki. The most tangible differential features of these races are found in the shape of the columellar lamella, of which comparable views are given on pi. 1, figs. 3, 9, 11, and pi. 2, fig. 3. The small differences in details of the palatal plicae, shown in the several face views, are not of much significance,, since these plicae are somewhat variable in most lots. la. Form interpres Sterki. "Near the typical form, generally somewhat slender; in- ferior columellar lamella rather high up ; the base is narrow inside and more keel-like outside; the aperture is narrowly rounded at the base, and from this feature specimens are easily recognized. More than any other form this shows clearly that the so-called 'basal' is really an inferior colu- mellar. "Distribution: Southern, especially southwestern; it ap- pears to be the prevalent form in Kansas, Arkansas, Okla- homa, and thus represents a geographical variety" (Sterki). This form is so intimately related to the typical armifera that I am unable to segregate it. Ib. Form similis Sterki. PI. 1, fig. 6. "Averaging somewhat smaller; more cylindrical, often more or less conical; whorls less convex; surface striae slighter ; shell generally more milky- whitish, as noticed espec- ially when a number of each, armifera and similis, are placed side by side; peristome never continuous, somewhat less everted; the columellar lamella is slighter, generally more protracted downward, the lower palatal is shorter, sometimes quite short; the spur of the parietal is larger" (Sterki). Distribution. — Northern New York to Iowa, Minnesota, Ontario. This is very close to armifera, the columellar lamella being practically the same in form, but the margins of the peri- stome are separated rather widely above. Figured from a paratype from Rose Hill, Ontario, the type locality. 18 GASTROCOPTA, NORTH AMERICA, WEST INDIES. Ic. Form affims Sterki. PL 1, fig. 5. "Somewhat small and slight; near similis, but less cylin- drical, rather somewhat oblong; whorls 6-6%, somewhat more convex than in similis, the last rounded at the base and little flattened over the palate, with none or a slight scar over the lower palatal plica; aperture somewhat rounded, peristome never continuous; parie to- angular lamella well connected with the peristome, spur of the parietal larger than in typical armifera; columellar nearly axial, a broad lamella, reaching down to the base, with distinct lines of growth, visible from the outside through the (fresh) shell below the umbilicus, as in B. contract a; inferior columellar [basal fold] wanting or small; lower palatal quite short, or even a transverse, short, abrupt lamella. Alt. 3.5 to 4, diam. 2.2 to 3 mm. "Distribution: Northern Ohio, Michigan, Indiana to Min- nesota and Kansas; seems rather scarce in the first-named states, common in Kansas. Found on sandy dunes on Lake Erie in Ohio. "It is notable and significant that both the columellar and the lower palatal in this form are of the same shape as in B. contracta, while in typical armifera they are quite different, yet the latter shows a tendency to having the peristome con- tinuous, while in affinis its ends are always apart" (Sterki). The lobe of the columellar lamella is rather thin, abrupt above, and the forward branch is almost obsolete. Difficult to distinguish from the typical form and form similis. Fig- ured from a paratype. \d. G. ARMIFERA ABBREViATA (Sterki). PL 2, figs. 1, 2, 3. "Averaging rather small, slight, somewhat fusiform to ovate or cylindro-conical ; apex low, conical or rounded; whorls only 51/2-6 (rarely 6%), little convex, with the penul- timate comparatively broader than in the other forms, the last rounded at the base, slightly flattened over the palate; color somewhat milky-whitish; surface with a dullish gloss, strias fine and slight; aperture somewhat small; peristome moderately everted, its ends (in most forms) comparatively GASTROCOPTA, NORTH AMERICA, WEST INDIES. 19 far apart ; lamellae and plicae : parieto-angular, not or slightly connecting with the peristome, spur small ; columellar rather as in typical armifera, but smaller, slighter; inferior colu- mellar [basal fold] tooth-like, placed obliquely, more constant than in other forms as to size, shape and position; lower palatal regular but slight, often rather short; suprapalatal rather constant. "Alt. 3.3 to 3.8, rarely 4 to 4.2, diam 1.9 to 2.2 mm.; some specimens are low, almost globular, alt. 3.2, diam. 2.1 mm. ' ' Numerous specimens seen from Bismarck, North Dakota ; Eastport, Iowa (Missouri River drift) ; Lincoln, Nebraska; Nickerson, Kansas" (Sterki). This is a common shell in North and South Dakota, also in eastern Colorado (Trinidad, Pilsbry}, and southward to near Las Vegas, New Mexico (rocky ledges along the Gallinas River, Cockerell) , Val Verde Co., Texas, in drift of the Pecos River, near the High Bridge (Pilsbry and Ferriss), and to Caddo Parish, Louisiana (C. B. Moore). It can be more easily identified than the preceding forms, by the quite short lobe of the columellar lamella (pi. 2, fig. 3), placed low on the pillar, its ascending limb very low, and by the usually larger development of the basal tubercle (inferior columellar of Sterki). The columellar lamella has a short forward branch, as in typical armifera, and in shape approximates to the contracta type more than in other subspecies of armifera. \e. G. ARMIFERA RuiDOSENSis Cockerell. PL 1, figs. 10, 11. The teeth are more massive than in the typical or any of the preceding forms, making the orifice much narrower. Columellar lamella large and thick, having a triangular out- line as seen from the back (pi. 1, fig. 11), the highest part being the receding lower lobe. Length 4, diam. above aper- ture 2 mm. New Mexico: BlackwelTs ranch, Ruidoso, the type (no. 73944, A. N. S. P.) from an anthill (C. M. Barber). Also Gallinas canyon (T. D. A. Cockerell). Bifidaria armifera var. nov. ruidosensis COCKERELL, Nau- tilus, XIII, July, 1899, p. 36. 20 GASTROCOPTA, NORTH AMERICA, WEST INDIES. The type is drawn in fig. 10, a specimen from Gallinas canyon in fig. 11. I/. G. ARMIPERA CLAPPI (Sterki). PL 1, figs. 7, 8, 9. " Shell glossy, colorless to milky- whitish, perforate, cylin- drical in the lower 3 to 4 whorls, conical or subconical above, with a rather acute apex; whorls 6% to iy2, the upper ones rather narrow, the lower ones broader and less convex, the last moderately large, ascending at the aperture, somewhat narrow but rounded at the base, slightly flattened over the palate; surface shining, with slight irregular to subregular striae; aperture nearly oval, margins approximate; peristome everted, not thickened, but there is a slight to rather strong white callous in the palate; lamellae and plicae: parieto- angular distinctly complex, rather long, moderately elevated, connecting with the peristome near its outer upper terminus (much as in B. armifera), the spur of the parietal moderately large ; columellar axial spiral, with the lower end nearer the aperture, thicker and rather abrupt, or somewhat bifurcate; ' basal' (inferior columellar) slight or wanting; upper and lower palatals regular, an interpalatal in many specimens; suprapalatal wanting or quite small. Alt. 3.5 to 4 (rarely 3.2 to 3.4), diam. 1.9 to 2.1 mm.; aperture alt. 1.5, diam. 1.2 mm. "Soft parts, seen only from one dried Alabama specimen, soaked, very dark from copious, deep brown pigment. Jaw amber-colored, strongly curved, rather broad, rounded at the ends, its surface with numerous radial rib-striae ; the line of the attachment of the tenaculum strong. Radula with 78 transverse rows of 27 (or 29) teeth, r -\- 6 -f- 7 (8) ; rachidian rather narrow, with a short mesodont and very small ecto- donts (barely visible) ; laterals bicuspid, with the mesodont as long as the plate, the ectodont about one-third as long; the outer posterior angle of the plate raised, cusp-like; sev- enth and eighth with the ectodont split in two, somewhat intermediate or 'transition' teeth; marginals (9-13) ser- rate, with the mesodont rather long, thin; the fourteenth a barely visible irregular transverse bar, or wanting. As this GASTROCOPTA, NORTH AMERICA, WEST INDIES. 21 is from a single specimen, there may be some variation. Other parts could not be examined" (Sterki). Distribution. — Tennessee: Knoxville (type loc., Mrs. Geo. Andrews) ; Fayetteville (B. Walker coll.) ; Columbia (B. Shimek, A. A. Hinkley). Alabama: Gurley and Huntsville (H. H. Smith). Michigan: Grand Eapids (B. Walker). In most lots it was associated with G. armifera. Bifidaria clappi STERKI, Nautilus, XXII, Feb. 1909, p. 108, pi. 8, fig. 4. The chief differential character of this race is in the shape of the columellar lamella. In a profile view (pi. 1, fig. 8) it is seen that the plane of the lamella is straight very nearly to the base, while in armifera the greatest projection forward is well above the base. The anterior branch of the columellar lamella, which is more or less apparent in armifera, is want- ing in clappi, being concrescent with the lower end of the main lamella (compare figs. 4 and 8). In view of the varia- bility of the columellar lamella in armifera, it does not ap- pear to me that this small modification is of specific impor- tance. Figured from co-types, one of which (fig. 7) served for the original figure of the species (no. 98279, A. N. S. P.). Dr. Sterki writes: "The species shows little variation, ex- cept in altitude, with nearly the same diameter, and such as are noted in the description. There is no tendency towards having the peristome continuous. . . . B. clappi is remarkable for its resemblance to some forms of B. armifera Say, for a variety of which it has been taken. Yet it is quite distinct. Of over 150 specimens carefully compared with more than 1500 armifera, not one was found doubtful or intermediate. The most tangible difference is in the shape of the columellar lamella. The shell averages somewhat smaller, the apex is more acute, the surface striae are finer and slighter, the lower palatal plica is always regular." Series of G. contracta. The angular and parietal lamellae are completely concres- cent, the parietal being abruptly bent towards the periphery within, and usually has a low, further continuation inward; inner end of the columellar lamella curving down. 22 GASTROCOPTA, NORTH AMERICA, WEST INDIES. G. contracta is the most specialized species of Albinula, and has no near relatives among known forms, either recent or fossil. The European Tertiary species are more nearly related to armifera than to contracta. 2. G-ASTROCOPTA CONTRACTA (Say). PL 2, figs. 9, 10, 11, 12. The shell is rimate, ovate-conic, tapering from the last whorl to the obtuse apex, bluish-milky or spermaceti-colored, imperfectly transparent, glossy, marked with fine growth- striae. Whorls 5%, very convex, the last half of the last whorl straightened, pinched at the base, impressed over the lower palatal plica, and on both sides of a low rounded ridge which stands a short distance behind the peristome (fig. 11). Aperture rounded- triangular, almost closed by large teeth. Angulo-parietal lamella joining the lip, angularly bent to the right near the middle, then abruptly becoming much lower and bent inward (pi. 2, fig. 9). Columellar lamella large, thin, very deeply placed, subvertical, the upper end curving forward (fig. 12). A subvertical callous stands in front of it, near the margin (fig. 12). Palatal plicae two, connected by a low callous, the lower one obtuse, transverse, more deeply placed and larger than the tuberculif orm upper plica. Peristome thin, well-expanded, continuous. Length 2.5, diam. 1.4 mm. Length 2.3, diam. 1.3 mm. Eastern United States and Canada: Maine, Ontario and Manitoba, south to Miami, Florida, and Vera Cruz, Mexico; Jamaica. Type locality, Oeeoquan, Virginia. Pupa contracta SAY, Journal of the Acad. Nat. Sci. Phila., ii, p. 374, 1822.— C. B. ADAMS, Contrib. to Conch., no. 9, p. 184 (Jamaica). — PFEIFFER, Monographia Hel. Viv., ii, 358; vi, 327; viii, 397.— BINNEY, Terrestrial Mollusks, v, p. 207, pi. 70, f. 2. — Bifidaria contracta (Say), PILSBRY, Nautilus, xi, 1898, p. 117.— WALKER, Occ. Pap. Mus. Zool. Univ. Mich., no. 15, 1915, pp. 9-11. — Pupa deltostoma Charpentier, KUES- TER, Syst. Conch. Cabinet, Pupa, 1852, p. 181, pi. 21, f. 17-19. — ? Pupa nebraskana W. G. BINNEY, in Warren's Prelim. GASTROCOPTA, NORTH AMERICA, WEST INDIES. 23 Eep. on Expl. in Neb. and Dak., in 1855-57, reprint, 1875, p. 107 (Ft. Berthold; name only). — "Pupa nebrascana War- ren's Rep. of Surveys, etc., Ex. Doc., ii, pt. 2, 35th Cong., 1859, p. 725"; W. G. BINNEY, Terrestrial Moll., v, p. 213 ("may perhaps be P. contracta"). This species is readily known by the conic shape, and pecu- liar aperture, nearly closed by the large teeth. There is some variation in the shape, some individuals being more shortly conic than that figured. Also in the prominence of the low ridge or crest behind the outer and basal lips, which varies from strong to very weak. Its western limit, as represented in the collection of the Academy, is Clay Co., South Dakota, Payne Co., Oklahoma, and mouth of the Pecos Eiver, Val Verde Co., Texas. South- ward it extends over peninsular Florida in a slightly different race, but has not occurred on the keys of the southern and eastern coast. In the higher parts of the Alleghany Mountains, G. con- tracta seems to be rare, if not absent. In Mexico specimens are in the collection of the Academy from Tampico, Tamaulipas; several places in eastern San Luis Potosi; Yautepec, Morelos; Texolo and near Orizaba, State of Vera Cruz; the specimens collected by A. A. Hink- ley, S. N. Rhoads and the Heilprin expedition. In Jamaica G. contract a was found by C. B. Adams prior to 1850, and subsequently it was taken in the interior of St. Anne (C. P. Gloyne, Journ. de Conch., xxiii, 1875, p. 121), near Hope Bay (H. Prime, in Henderson coll.) and on Swift River (C. W. Johnson). Specimens from all these lots have been examined. Possibly it was introduced on plants from the mainland, Mexico or the United States, as the species seems an alien in the Jamaican fauna; yet its occurrence in several localities is against this view. I cannot see that the Mexican and Jamaican specimens differ in any way from those of the United States. It, is a wonderfully constant species. 24 GASTROCOPTA, NORTH AMERICA, WEST INDIES. 2a. Form peninsularis, n. f. PL 2, fig. 8. The shells of peninsular Florida are slightly more fragile than the typical form, and differ by having the inward con- tinuation of the parietal lamella, beyond the second angular bend, much lower and often detached from the rest of the lamella. Figured type is from Crystal River, Citrus Co., Florida. 2&. G. CONTRACTA CLiMEANA Vanatta. PL 3, figs. 1, 4. "Shell similar to typical contract a (Say), but the parietal tooth lacks the inner continuation, being L-shaped (fig. 4). Alt. 2.29, diam. 1.43 mm." (Vanatta). Southern United States: Gulf coastal plain from Alabama to Texas, and lowlands of the Mississippi north to Arkansas. Alabama: Blakeley and Simpson Island, Baldwin Co. (C. B. Moore) ; Calera and Wetumpka (H. H. Smith). Mississippi: Anderson Landing, on the Sunflower Eiver near confluence with the Yazoo, Sharkey Co. (type loc.), and O'Neil Land- ing, Yazoo Co. (C. B. Moore). Louisiana: New Orleans (8. N. Rhoads), Franklin and Morehouse Parishes (C. B. Moore). Arkansas: Ashley and Arkansas Counties (C. B. Moore). Texas: Navidad Eiver bottom, Jackson Co. (J. D. Mitchell). Bifidaria contracts climeana Van., Proc. A. N. S. Phila., 1911, p. 525, f. 1-3. In its area this subspecies replaces G. contracta. The Flor- idian form (peninsularis) in which the inner continuation of the parietal lamella is weak or interrupted, forms a partial transition between contracta and climeana. Series of G. holzingeri. The inner end of the parietal lamella curves strongly towards the periphery, and its anterior end is produced for- ward of the junction with the angular lamella, the two lamel- lae diverging forward, the whole, when viewed from the base, shaped like a mirror image of the letter "y". Columellar lamella thin, high, and curving down at the inner end. Pala- tals on a callous ridge, as usual. The separation of parietal and angular lamellae anteriorly GASTROCOPTA, NORTH AMERICA, WEST INDIES. 25 is a primitive feature; otherwise the lamellae are rather highly specialized. 3. GASTROCOPTA HOLZINGERI (Sterki). PI. 2, figs. 4, 5, 6. " Shell narrowly perforated, turreted-cylindrical, vitreous (or whitish), very minutely striate, shining; apex rather pointed, whorls 5, regularly increasing, well rounded, espec- ially the upper ones, the last somewhat narrowed and a little ascending towards the aperture, compressed at the base but not carinated, at some distance from the outer margin pro- vided with an oblique, rather prominent, acute crest corres- ponding in direction to the lines of growth, extending from the base to the suture, formed by a whitish callosity; behind the crest the whorl is flattened, and corresponding to the lower palatal lamella, impressed. Aperture lateral, scarcely oblique, relatively small, inverted subovate, with a slight sinus at the upper part of the outer wall, margins approximated; peristome moderately reflected; lamellae 6: one parietal, rather long, very high, in its middle part curved outward, towards the aperture bifurcated, the outer branch [angular lamella] reaching the parietal wall; one columellar, longitu- dinal, rather high, its upper end turning in nearly a right angle towards the aperture, but not reaching the margin; basal exactly at the base, short, high, dentiform; 3 in the outer wall, viz. : the lower palatal long, ending in the callous, highest about its middle ; the upper short, rather high on the callous; above the upper one a suprapalatal, quite small, dentiform, nearer the margin. Length 1.7, diam. 0.8 mm." (Sterki), United States and Canada: Ontario and western New York to Helena, Montana, south to Illinois, Kansas, and Albuquerque and Mesilla, New Mexico. Pupa holzingeri STERKI, Nautilus, iii, August, 1889, pp. 37, 96, 119 ; Proc. A. N. S. Phila. for 1889, p. 414, pi. 12, f. 4-7. — BINNEY, 3d Suppl. to Terr. Moll., v, p. 93, text figure. — WALKER, Nautilus, v, p. 93 (Put-in-Bay Island, Lake Erie) ; Occ. Pap. Mus. Zool. Univ. Mich., Nov. 15, 1915, pp. 4-9 (San Miguel Co., N. M.). — PILSBRY, Nautilus, xiv, p. 83. — Bifidaria 26 GASTROCOPTA, NORTH AMERICA, WEST INDIES. holzingeri var. fordiana STERKI, Nautilus, vi, 1892, p. 4 (nude name). — Bifidaria agna PILSBRY and VANATTA, Nautilus, xx, 1907, p. 140, figs. 1-3. G. holzingeri differs from G. contracts by its nearly cylin- dric shape, the presence of a strong basal fold, the small size, and discontinuous peristome. The columellar lamella (fig. 6) ascends the axis and towards the upper end curves forward almost exactly as in G. contracta. It differs from both con- tracts and armifera by the shape of the angulo-parietal lamella, which is forked in front, and in a basal view has the shape of the Greek letter A, as in the subgenus Immersidens (pi. 2, fig. 4). The palatal callous and armature, however, are typical for Albinula. It is not an uncommon species in Illinois and Iowa; found also in Minnesota (Winona), Dakota, Nebraska, etc. 3&. G. holzingeri agna Pilsbry & Vanatta. PL 2, fig. 7. The shell is rimate, cylindric, the last three whorls of about equal diameter, the summit very obtuse; surface nearly Figs. 9-11. Gastrocopta holzingeri agna. smooth ; of a spermaceti-whitish color. There are 4% convex whorls, the last with a strong rounded crest behind the outer lip, rather close to it above, but being more oblique, it is fur- ther behind the lip at the base. Behind the crest the whorl is a little flattened laterally, and shows the lower palatal plica through as a white spot. The aperture is brought forward nearly in line with the ventral convexity of the whorls. The GASTROCOPTA, NORTH AMERICA, WEST INDIES. 27 peristome is thin, slightly expanded, strengthened a short distance within wth a low callous rib. The parietal lamella appears distorted and angular in front view; seen from the base it is seen to consist of an angular and a parietal lamella, completely united inwardly. The columellar lamella is thick and slants upward from within. The basal fold is strong, arising on the callous but extending inward beyond it. The lower palatal fold is large and pliciform, more or less im- mersed, standing chiefly inward from the palatal callous. The upper palatal fold is much smaller, and stands rather near the lower, upon the palatal callous. There is a small or minute suprapalatal fold, also on the callous. Length 1.75, diam. 1 mm. Trinidad, Colorado, type no. 93052, A. N. S. P. (figs. 9, 10; pi. 2, fig. 7). Also Silver Lake, Kansas (fig. 11). This race differs from G. holzingeri by its more slender, cylindric shape and the form of the columellar lamella, which ascends straightly and runs forward (pi. 2, fig. 7), while in holzingeri it ascends further and has an arched shape. Subgenus VERTIGOPSIS 'Cockerel!' Sterki. Vertigopsis Ckll. MS, STERKI, Nautilus, vi, 1892, p. 4; p. 101, 1893, type P. curvidens Gld. Vertigopsis differs from Sinalbinula chiefly by the weak- ness of the parietal lamella, the angular being very small or wanting, and the parietal short and simple. It is not directly related to other American groups of the genus, having evidently been derived from the Asiatic section Sinalbinula. The species are illustrated on plates 3, 4 and 5. Key to Species. a. With a distinct palatal callous. 1}. Shell ovate-conic, usually with 7 teeth; length 1.7 to 2 mm. G. tappaniana, no. 5. &1. Shell oblong-conic or cylindric. c. Oblong-conic, with 5 to 8 teeth; 1.5 to 1.8 mm. long. G. pentodon, no. 4. c1. Cylindric, with 5 teeth. G. p. gracilis, no. 4a. 28 GASTROCOPTA, NORTH AMERICA, WEST INDIES. a1. With no distinct palatal callous. b. Ovate-conic, with 4 to 5 teeth ; 1.2 x 1 mm. 6r. carnegiei, no. 6. &1. Cylindric, with 5 teeth; 1.6 to 1.9 mm. long. G. pilsbryana, no. 7. 4. GASTROCOPTA PENTODON (Say). PI. 3, figs. 2, 3, 5 to 8; pi. 4; pi. 5, figs. 28 to 41. The shell is rimate, oblong-conic with obtuse summit, clear corneous or whitish, smooth. Whorls 5, convex, the last with a rounded ridge or crest (low or well developed) close behind the lip, and flattened near the base behind the ridge. Aper- ture short, truncate-oval. Teeth typically five, the angulo- parietal lamella almost simple and straight, columellar lamella thin, horizontal; the palatal plicae stand upon a low callous ridge, the lower plica compressed and entering a little more deeply than the smaller, tuberculiform upper one. Accessory denticles are usually developed in the subcolumellar, basal and interpalatal positions. The peristome is thin, narrowly expanded, with a thin, straight, parietal callous between the widely separated ends. Length 1.8, diam. 1.1 mm. Length 1.7, diam. 1 mm. Length 1.5, diam. 0.8 mm. Eastern United States and Canada: Prince Edward and Magdalen Islands to Alberta, south to central Florida and Texas; New Mexico; west in Arizona to the Santa Cruz River. Eastern Mexico and Guatemala. Type locality, Penn- sylvania. Vertigo pentodon SAY, Journal Acad. Nat. Sci. Phila., ii, 1821, p. 376. — Pupa pentodon (in part) BINNEY, Terrestrial Mollusks, v, 1878, p. 200. — PFEIFFER, Monogr. Hel. Viv., ii, 359; iii, 557; iv, 684; vi, 330; viii, tt)2.—Bifidaria pentodon Say, PILSBRY and VANATTA, Nautilus, xix, p. 121, pi. 6, 7, figs. 1 to 41. — WALKER, Occ. Pap. Mus. Zool. Univ. Mich., No. 15, 1915, pp. 9-11. — Pupa curvidens GOULD, Report on the Invertebrata of Massachusetts, 1841, p. 189, fig. 120 — Pupa cincinnatiensis JUDGE, The Quarterly Journal of Con- GASTROCOPTA, NORTH AMERICA, WEST INDIES. 29 chology, 1878, p. 343. — Pupa montanella COCKERELL, The Journal of Conchology, Leeds, vi, 1889, p. 63; British Nat- uralist, 1891, p. 101. — Pupa curvidens GOULD, Invertebrata of Massachusetts, 1841, p. 189, f. 12Q.—Pupilla floridana DALL, Proc. U. S. Nat. Mus., viii, 1885, p. 261, pi. 17, f. II.— Pupa curvidens var. gracilis STERKI, Nautilus, iii, 1890, p. 119; Land and Fresh- Water Mollusca in the Vicinity of New Philadelphia, 1894, p. 5. This widely-spread species may be recognized by the small size, spermaceti or bluish-white color and simple parietal tooth, with lip -teeth arranged on a white callous rim. It is most easily obtained by dirt or leaf sifting. It lives on wooded hillsides or in well-drained groves among leaves in the underbrush; also "is common among moss and grass in forest and on open slopes." The variations in shape and teeth are shown in plates 4 and 5, figs. 1-41. PI. 3, figs. 2, 3, 5, and pi. 4, fig. 1, are typical pentodon, which has 5 teeth. The parietal lamella ' ' is really composite, that is, composed of the parietal and the angular, although the latter is generally quite small, a mere appendage of the former. In many specimens of pentodon it is quite distinct (see pi. 3, fig. 6; pi. 4, figs. 3, 12, 21, 27; pi. 5, fig. 32), and in some the whole lamella is even bifid, some- what like that of B. holzingeri" (Sterki). More commonly, and typically, the angular lamella is wanting, or so small that it is not distinguishable from the parietal (pi. 3, fig. 2). The columellar lamella descends spirally (pi. 3, fig. 5). PI. 4, figs. 1 to 8 are from Maine specimens, showing the ordinary variations. The development of a crest behind the lip varies a good deal, from weak to very strong, with all in- tergrades. P. cincinnatiensis (pi. 5, fig. 35, a cotype) is merely a small form of pentodon. It is described as having the "peristome simple, heavily thickened near the margin, the callous ex- tending over the parietal wall; aperture contracted by five prominent denticles, seated on the callous, one prominent on the parietal wall, two on the columella, the lower being the smaller of the two, and two on the outer portion of the peri- 30 GASTROCOPTA, NORTH AMERICA, WEST INDIES. stome, more deeply seated in the throat, and occasionally one or two very minute rudiments on the peristome. Length 1.56, diam. .84 mm. This shell is found on both sides of the Ohio Eiver, near Cincinnati." (Judge, The Quarterly Journ. of Conch., p. 343, 1878.) The increase in number of accessory denticles or teeth cul- minates in the form named curvidens, represented in pi. 4, figs. 9 to 15, also pi. 5, figs. 3, 6, 32, and perhaps some others, as there is absolutely no line to be drawn between pentodon and curvidens. The number of teeth varies from 5 to 9 in perfectly adult shells of the same gathering from one spot. Gould's type had 9 teeth. It was from Phillips Point, Lynn, Massachusetts. PI. 3, figs. 6 (Ocean City, N. J.), and 7, 8 (Troy, N. Y.), are good examples of the form curvidens. It may be stated as proven that some colonies consist of "pentodon" and intermediate forms; some of "pentodon," intermediate and "curvidens" forms; and some of the inter- mediate and "curvidens" forms. We have found no large gathering of wholly typical pentodon or entirely curvidens. Either form may be found with a low or high crest — this being usually more constant in any one colony than the num- ber of teeth or the size and shape of the shell. The only theory upon which curvidens could be retained as a species or subspecies would be to assume that two species are living in a state of hybridism. The development of an infraparietal denticle is extremely variable in many lots, as in that from Buckfield, Me., pi. 4, figs. 1 to 4, 8. This infraparietal tubercle is exactly compar- able to that of some Eastern species, such as G. armigerella of Japan and China. It is not found in other American Verti- gopsis, though occasionally developed in the typical section of Gastrocopta. P. florida/tm (pi. 4, fig. 9, a cotype from the author) is ab- solutely identical with curvidens. It is described as "sub- cylindrical, . . . teeth about 9, of which there are generally 3 larger than the rest, their tips nearly meeting and their bases mutually nearly equidistant; one is on the pillar, one on the body- whorl, and one on the anterior margin ; on either GASTROCOPTA, NORTH AMERICA, WEST INDIES. 31 side of the latter are two generally subequal, much smaller denticles. Lou. 1.6, lat. .75 mm. Archer, Alachua Co., Fla." (Dall, Proc. U. S. Nat. Museum, vol. 8, 1885, p. 261, pi. 17, f. 11.) The figure seems to have two teeth on the parietal wall, two on the columella and five in the palatal region. This is practically identical with the arrangement described under curvidens. Since no definition of any kind has been published, P. mon- tanella Ckll. becomes an absolute synonym of B. pentodon. The following notices of it have appeared : "Pupa montanella. A minute Leucochila which I have found very sparingly at about 8400 feet in West Ouster Co. (Colorado), to which I have given the name P. montanella sp. nov., but do not describe it pending further investiga- tions." (Cocker ell, The Journ. of Conch., Leeds, vol. vi, 1889, p. 63.) "P. montanella, indicated on the same page as P. colora- densis, proves to be a form of P. pentodon. ' ' ( Cockerell, The Brit. Naturalist, 1891, p. 101; re-affirmed also in Univ. of Colo. Studies, iv, p. 171.) In Mexico I have seen G. pentodon from a canyon four miles west of Victoria, Tamaulipas (S. N. Rhoads), and bluffs north of San Dieguito, S. L. Potosi (A. A. Hinkley). In Guatemala it was found by Mr. Hinkley at Jocolo. The speci- mens are typical. These localities show that the species has an extraordinary zonal range. It is found over a greater area than any other North American Gastrocopta. 4a. G. pentodon gracilis (Sterki). PL 4, figs. 16 to 27. "On a gravelly bank at New Philadelphia, Ohio, there is a peculiar form of our species; long, slender, nearly cylin- drical, with only 5 typical lamella*, no accessory ones" (Sterki, 1890). "Pupa curvidens gracilis Sterki. Scarce. New Philadel- phia. A peculiar form intermediate in shape between the type and Pupa holzingeri Sterki. It has also been seen from Rhode Island, Tennessee and Alabama" (Sterki, 1894). 32 GASTROCOPTA, NORTH AMERICA, WEST INDIES. This is usually larger, more cylindrie, with 5 teeth, though perfectly mature shells may have as few as 3 (figs. 19, 26) or as many as 6 or 7 (figs. 16, 18, 21). It was originally de- scribed from New Philadelphia, Ohio, but those figured are from Alabama ; figs. 16, 17, 21 to 27 from around Wetumpka ; 18, 19 from Woodville ; 20 from Big Wills Valley, coll. by H. H. Smith and H. E. Sargent. None of them has an infra- parietal denticle. While this race seems to be tangibly differentiated in the hill region of Alabama, specimens may be selected from other lots of pentodon which could not possibly be distinguished if mixed with the Alabama shells; for instance, fig. 31, Henry Co., Indiana, and fig. 33, Des Moines, Iowa, both taken from lots varying in shape from long and cylindrie to shorter and more conic. The specimens of G. pentodan and varieties figured are from the following localities : NOTE. — The figures are all drawn to one scale (X 13.8), and any may be accurately measured by plotting on paper a scale with the lines 13.8 mm. apart; each space then representing 1 mm. Thus fig. 1 is 1.8 mm. long. PLATE 4, figures 1-4. Buckfield, Maine. John A. Allen. No. 87304. 5. Woodland, Maine. O. Nylander. No. 58249. 6. Fairfield, Maine. J. H. Thompson. No. 58248. 7. Westbrook, Maine. A. D. Brown (Bolles). No. 4263. 8. Buckfield, Maine. John A. Allen. No. 87307. 9. Cotype of P. floridana Dall. Alachua Co., Fla. W. H. Ball. No. 58242. 10. Mt. Taylor, south of Volusia, Fla. H. A. Pilsbry. -No. 72769. 11. San Marcos, Texas. H. A. Pilsbry. No. 90454. 12. Drift of Guadalupe River, 4 miles above New Braun- fels, Texas. H. A. Pilsbry. No. 90456. 13, 16, 17, 21-27. Wetumpka, Alabama. H. H. Smith. Nos. 87151, 90458, 90425. 14, 15. Near Valley Head, Alabama. H. H. Smith. No. 90451. 18, 19. Woodville, Alabama. H. E. Sargent. No. 66901. 20. Big Wills Valley, 2 miles south of Valley Head, Ala- bama. H. H. Smith. No. 90453. PLATE 5, figures 28, 29. Troy, New York. T. H. Aldrich. No. 58251. GASTROCOPTA, NORTH AMERICA, WEST INDIES. 33 30. Greenwich, New York. T. Bland. No. 3924. 31. Henry Co., Indiana. R. Walton. No. 58240. 32. Ocean City, New Jersey. H. A. Pilsbry. No. 72709. 33. Near Des Moines, Iowa. T. Van Hyning. No. 88439. 34. 35. Near New Philadelphia, Ohio. V. Sterki. No. 58239. 36. Cotype of P. cincinnatiensis Judge. Cincinnati, Ohio. Wm. Doherty. No. 58244. 37. Henry Co., Indiana. E. Walton. No. 58240. 38. Miami, Florida. S. N. Rhoads. No. 58253. 39. Des Moines, Iowa. T. Van Hyning. No. 79641. 40. Jasper Co., Missouri. M. A. Mitchell. No. 58254. 41. Silver Lake, Kansas. J. B. Quintard. No. 58246. 5. GASTROCOPTA TAPPANIANA (C. B. Adams). PI. 3, fig. 9; pi. 5, figs. 42 to 53. "Shell very small, pale horn-color, translucent, tapering above the penultimate whorl; whorls a little more than five, convex, with a well-impressed suture; aperture sub-orbicular (the penult, whorl cutting off about one-third of the circle), about one-third of the length of the shell ; margin sharp, with a narrow contraction in the submargin, beneath which is a thickening within, on which are the labial teeth; teeth eight, five primary and three secondary; of the former the largest is on the penultimate whorl, the next largest on the left side of the aperture ; at the base, beginning at the left hand, is a primary, then a secondary, a primary, a secondary, a pri- mary and another secondary, extending nearly to the upper extremity of the right margin; the last three primaries are not constant in size; umbilicus open. Length 0.08 inch; breadth 0.05 inch. "This species is easily distinguished from the preceding (P. contracta) by its teeth/' (C. B. Adams, in Thompson's History of Vermont, 1842, p. 158.) Ontario and Maine to Virginia and Alabama, west to South Dakota and Kansas, southwest to Arizona, but not known from the southeastern Atlantic States, Virginia to Florida. Type locality, Vermont. Pupa tappaniana Ward, inedit, C. B. ADAMS, in Thomp- son's History of Vermont, 1842, p. 158. — Pupa tappiana Ward, PFEIFFER, Symbolae ad Hist. Heliceorum, ii, 1842, p. 34 GASTROCOPTA, NORTH AMERICA, WEST INDIES. 55. — Bifidaria tappaniana (C. B. Ad.) PILSBRY and VANATTA, Nautilus, xix, 1906, p. 126, pi. 7, figs. 42-53.— WALKER, Occ. Pap. Mus. Zool. Univ. Mich., No. 15, 1915, pp. 7-11.— Pupa pentodon f. curta STERKI, Land and Fresh- Water Mollusca in the Vicinity of New Philadelphia, 1894, p. 5; Nautilus, xix, 1906, p. 134. The shell is larger than pentodon, markedly conic though obtuse ; only one tooth on the parietal wall, usually 6 on the columellar, basal and outer margins, those on the latter stand- ing on a strong rib. Lower palatal tooth usually not so long and entering as in B. pentodon. Length 2, diam. 1.2 mm. Length 1.7, diam. 1.1 mm. It is rather a common species in central Arizona, the west- ernmost locality being Jerome, Yavapai Co., a little west of the 112th meridian. Southward it has been found near the Mexican boundary in the Huachuca Mountains (Tanner canyon, 6000 ft.). While it must be admitted that occasional individuals are intermediate between tappaniana and pentodon, yet the two forms are quite readily separable in the great majority of lots. They differ in station, tappaniana being found in low, moist places, under wood, often with Vertigo ovata, while pentodon lives in dryer situations, as Dr. Sterki has noted. G. tappaniana is not known from the southern Atlantic states, Virginia to Florida, but its range extends to the Gulf of Mexico in Alabama. G. pentodon was long known as Pupa, curvidens, and G. tappaniana as P. pentodon. In Binney's several publications the two are united under P. pentodon, the wood-cut repre- senting tappaniana. Form curta Sterki. "Examples from wet places are small and short ovoid. " New Philadelphia, Ohio. Fig. 9 of pi. 3 is from Falls of Schuylkill, West Philadel- phia. The figures on plate 5 represent shells from the fol- lowing localities: Fig. 42. School Lane, Germantown, Philadelphia, Pa. E. Walton. No. 58250. GASTROCOPTA, NORTH AMERICA, WEST INDIES. 35 Fig. 43. West Fairmount Park, near Chamounix, Philadel- phia, Pa. Vanatta. No. 58224. Fig. 44. Buckfield, Maine. John A. Allen. No. 58219. Fig. 45. Ithaca, New York. No. 62486. Figs. 46-48. Upper Red Hook, Duchess Co., New York. W. S. Teator. No. 58218. Figs. 49-52. Washington, D. C. E. Lehnert. A. N. S., No. 58225. Fig. 53. Drift of Oak Creek, Page's Ranch, Oak Creek, Arizona. E. H. Ashmun. No. 82925. 6. GASTROCOPTA CARNEGIEI (Sterki). PL 10, fig. 5. "Shell minute, ovate-conical with the apex nearly pointed, narrowly umbilicate and short-rimate, colorless whitish; whorls four to four and a half, well rounded with deep suture, the last large, rounded at the base; surface with very slight, irregular striae, apex without striae, microscopically rugulose ; aperture rather large, well rounded, peristome sharp, not everted, with the ends somewhat approximate, palate with a very slight crest close to and parallel with the margin, inside with a very slight callous or none; lamellae and folds: pari- etal rather large, nearly simple, columellar medium, an in- ferior columellar near the base, or wanting; the two prin- cipal palatals. Soft parts not examined. Alt. 1.2, diam. 1 mm.; other examples, 1.0 : 0.9" (Sterki). Ohio: woods north of Geneva, Ashtabula Co. Type no. 1990, Sterki collection of N. A. Pupidaa. Bifidaria minuta STERKI, Nautilus, xxix, January, 1916, p. 105. Not Pupa minuta "Say", Pfeiffer, 1842, also a Bifi- daria.— Bifidaria carnegiei STERKI, Nautilus, xxx, November, 1916, p. 84. ' ' This Bifidaria is near tappaniana Adams, but differs from that species as follows: it is much smaller, more conical, the whorls are less in number, more rapidly increasing, more convex, the last is comparatively larger; there is no callous in the palate or a very slight one, the palatal folds are longer and there are no secondary ones (as supra- and interpalatal). "It was a surprise to find a new Bifidaria in this part of the country, and it appears that the (three) specimens on hand represent a distinct species. If not closely examined, 36 GASTROCOPTA, NORTH AMERICA, WEST INDIES. they have the appearance of young or half grown of some other species, and probably were overlooked, partly due to the habit of most Bifidarias of this group of covering their shells with dirt" (Sterki). The type and only perfect specimen found is figured. It appears to be distinct from pentodon and tappaniana, but in so variable a group further specimens are required for a full understanding of its relation to known species. 7. GASTROCOPTA PILSBRYANA (Sterki). PI. 3, figs. 10, 11, 12. "Shell minute, narrowly perforate, cylindrical-oblong to cylindrical, somewhat attenuated towards the rather blunt apex; colorless (when fresh glassy), with a very delicate bluish tint; smooth and polished, with few, irregular, micro- scopic striae which are more marked near the aperture. Whorls 43/2 to 53/2> moderately rounded with a rather deep suture, especially in the upper half, regularly and slowly in- creasing, the embryonal being relatively large, the last some- what ascending toward the aperture; the latter of moderate size, lateral, subovate, margins approached; peristome some- what expanded, without a thickened lip or a callous in the palatal wall; outside is a barely perceptible trace of a crest near the margin, and behind that a slight impression most marked upon the inferior palatal fold. Lamellae 4 or 5 : one apertural [parietal], rather high, of moderate length, simple; one columellar, horizontal, of moderate size, simple; basal very small or wanting; palatals the typical, inferior deeper- seated, of moderate size, superior small or very small. Alt. 1.5 to 1.7, diam. 0.8 to 0.9 mm." (Sterki). New Mexico: Gallup, McKinley Co.; Sulphur Springs, near Jemez, Bernallilo Co. (Ashmun) ; Santa Fe (Ashmun), and Sandia Mts. (Maud Ellis), Santa Fe Co.; Las Vegas and Pecos, San Miguel Co. (Cockerell) ; Duran, Torrance Co. (Pilsbry) ; San Rafael (Ashmun) and Grant (Pilsbry & Ferriss), Valencia Co.; Black Range, Socorro and Sierra counties (Pilsbry & Ferriss) • Sierra Blaiica and Capitan Mts., Lincoln Co. (Ashmun) ; Cloudcroft, Sacramento Mts., Otero Co. (Viereck) ; Dripping Spring, Organ Mts., Dona GASTROCOPTA, NORTH AMERICA, WEST INDIES. 37 Ana Co. (Cockerell) ; Florida Mts., Luna Co. (Pilsbry & Ferriss) ; Big Hatchet Mts., Grant Co. (Pilsbry). Arizona: Mt. Trumbull and Kaibab Plateau (Ferriss & Daniels), Grand Canyon, Bill Williams Mt. (Pilsbry & Fer- riss), Flagstaff (Ashmun), Coconino Co.; Jerome, Yavapai Co. ; Holbrook, Navajo Co. ; Navajo Springs, Apache Co. (Ashmun) ; Blue River and Eagle Creek, Graham Co.; Santa Catalina Mts., Pima Co. (Ferriss) ; Chiricahua and Dragoon Mts. (Pilsbry & Ferriss), and Huachuca Mts. (Ferriss), Co- chise Co.; Santa Rita Mts., 20 miles from Crittenden, Santa Cruz Co. (Ashmun). Type locality, Colorado River, Arizona. Pupa pilsbryana STERKI, Nautilus, iii, March, 1890, p. 123. — Bifidaria pilsbryana Sterki, Pilsbry, Nautilus, xi, p. 118. — • PILSBRY and COCKERELL, Nautilus, xiv, pp. 85, 86. — VANATTA, Nautilus, xvi, p. 58. — ASHMUN, Nautilus, xiii, p. 14. — PILS- BRY and FERRISS, Proc. A. N. S. Phila., 1909, p. 415; 1910, p. 136. — WALKER, Occ. Pap. Mus. Zool. Univ. Mich., No. 15, 1915, pp. 2, 3 (Canones Creek, east of Mt. Pedernal, and vicinity of Puerco Creek, Rio Arribo Co., N. M., Case). G. pilsbryana is similar to slender examples of G. pentodon in shape and color, but it differs by having the lip thin, with- out any internal callous whatever, and there are never more than five teeth, but always five in adult shells. It has some resemblance to G. pellucida, but is retained in the section Vertigopsis because the parietal lamella is simple, an angular lamella being entirely wanting; but more because the basal fold is placed rather far to the left, a special character of Vertigopsis. The columellar lamella is a directly horizontal and rather short tubercle, not descending as in pentodon. There is considerable variation in the size of the teeth, and also in the size of the shell, even in the same lots. The length varies from 1.65 to 1.9 mm. This is one of the commonest species in the mountains or plateaus of over 4000 ft. elevation in both New Mexico and Arizona. Excepting the practically unexplored northern tier of counties in New Mexico, and the equally unknown two western counties of Arizona, it is known to occur in suitable places all over both states ; but in the south these places are 38 GASTROCOPTA, NORTH AMERICA, WEST INDIES. well up in the mountains, where thousands of specimens can be obtained by sifting. The single record (Univ. of Colo. Studies, iv, p. 171) of G. pilsbryana from Colorado (Trini- dad), was erroneous; the specimens are typical G. pentodon. The record of this species from Chicorico canyon near Eaton, N. M. (Nautilus, xiv, p. 83) was also an error for G. pentodon. Submenus IMMERSIDENS Pilsbry and Vanatta. Immersidens PILS. & VAN., Proc. A. N. S. Phila., Dec. 11, 1900, p. 606 (for B. ashmuni and B. perversa). — PILSBRY & FERRISS, Proc. A. N. S. Phila., 1910, p. 136. Gastrocoptas in -which the angular lamella is united with the parietal at the inner end of the former, the two diverging forward, and together shaped like the Greek letter A, or like a reversed y. The basal fold, when present, is radial, or transverse to the cavity. There are two palatal plicae, not standing on a callous ridge, the lower one often deeply im- mersed. Peristome thin, expanded. Shell cylindric, thin, pale. Type G. ashmuni (Sterki). Distribution, central plateau and mountains from the Grand Canyon of the Colorado, northern Arizona, southward to southern Brazil and western Argentina. The area of Immersidens in the United States has been rather well explored, so that few more species are to be ex- pected. The occurrence of the group in central Mexico and Guatemala gives ground for the belief that forms will be found over much of the Mexican plateau. In South America true species of Immersidens occur as far south as Rio Grande do Sul (G. iheringi) and Argentina (G. dicrodonta), and it is likely that G. pazi (Hid.) also belongs to this section. Most species of Immersidens daub the shell with dirt, like the species of Albinula, and unlike the cleaner typical Gas- trocoptas. Key to Species of Immersidens. a. Inner end of the parietal lamella strongly curving towards the periphery; teeth large. &. Sinistral; last whorl straightened and produced forward. G. perversa, no. 8. GASTROCOPTA, NORTH AMERICA, WEST INDIES. 39 61. Shell dextral. c. Columellar lamella running forward on the parietal wall in the position of an infrapari- etal lamella; lower palatal and basal folds very deeply immersed; neck gibbous; peri- stome continuous. d. Length about 2 mm. G. ashmuni, no. 9. d1. Length 1.6 to 1.8 mm. G. ashmuni minor, no. 9a. c1. Columellar lamella normal in position, not running forward on the parietal wall, turned down at the inner end; peristome scarcely or not continuous; palatal plicae visible in a front view; basal fold well developed. d. A very strong, white crest behind the lip; columellar lamella having a long, vertical inner portion; length about 1.75 mm. G. holzingeri, no. 3. d1. No distinct crest on the neck; length, 2 mm. or more; Arizona. G. cochisensis, no. 10. a1. Inner end of the parietal lamella curving outward very little; teeth not large; ends of peristome well separated; angular lamella low. &. Columellar lamella very short; lower palatal plica rather deeply placed; basal fold minute, rarely wanting; Arizona. G. oligobasodon, no. 11. 61. Columellar lamella longer ; lower palatal less deeply placed; no basal fold; central Mexico. G. prototypus, no. 12. b2. Like prototypus, but with a well-developed basal fold ; Guatemala. G. p. basidentata, no. I2a. a2. Inner end of the parietal lamella not distinctly curving towards the periphery; palatal and basal folds well de- veloped, visible in a front view. &. Entire columellar lamella horizontal; margins of peristome rather remote ; Arizona. c. Columellar lamella simple; parietal lamella 40 GASTROCOPTA, NORTH AMERICA, WEST INDIES. projecting very little forward of the junction of the angular. G. dalliana, no. 13. c1. Columellar lamella having a small callous below its inner end; parietal lamella project- ing distinctly forward of the junction of the angular. G. d. media, no. 13&. &1. Columellar lamella horizontal in front, the inner end bent down at a right angle. c. Peristome continuous ; lower palatal and basal folds deeply placed; Arizona. G. bttamellata, no. 14. c1. Peristome interrupted above; lower palatal and basal folds not deeply placed; columellar lamella larger in a front view ; Brazil. G. iheringi, no. 35. as. Species not included in the key: G. dicrodonta, no. 34; G. pazi, no. 36. 8. GASTROCOPTA PERVERSA (Sterki). PI. 6, figs. 9, 10, 11. "Shell sinistrorse, oblong-cylindroconical, horn-colored, translucent; apex rather acute; base umbilicate-rimate, the umbilicus partly overlaid by a projecting part of the last whorl; whorls 5%, rather slowly and regularly increasing, convex, with the suture moderately deep, the last equal- ing two-fifths of altitude, slightly nar- rowed at the periphery, at last somewhat ascending and then protracted horizon- tally beyond the periphery of the spire, for a length equal to one-third of the diameter, with a rather high, oblique crest-swelling all around, in front of that contracted, and margins broadly everted all around at the aperture; on the palatal side of the protracted part, behind the aperture, a deep longitudinal (= spiral) impression; surface slightly shining, with fine, almost regular, crowded striae; nucleus Fio. 12. — G. perversa, basal view, most of the last whorl re- moved to show the angular, parietal and columellar lamellae. GASTROCOPTA, NORTH AMERICA, WEST INDIES. 41 microscopically rugulose; aperture of moderate size, rounded below, truncated above, with, a sinus occupying the upper half of the palatal side. Lamellae and folds: angulo-parietal large ; angular at its inner end joining the side of the parietal, with a curve reaching the margin at the supero-parietal angle; parietal very high, strongly curved, the (inner) con- vexity toward the columella, its front end at a rather large distance from the supero-columellar angle; columellar spiral, with its front end on the parietal wall, its inner part not visible ; basal radial, lamellar, high ; inferior palatal fold very deep in the throat, long, lamellar, curved downward over the basal, visible only from the outside ; superior palatal fold quite short, high, tooth-like, in front of the inferior. Alt. 2.3, diam. of spire 1.1, whole diam. 1.5 mm. ; apert. alt. 0.8, diam. 0.6mm." (Sterki). Arizona: Nogales (type locality; Ashmun) ; debris of Santa Cruz River, at Amado's ranch, above Tucson; Salt River debris, Tempe; debris of San Pedro River at Benson; Dra- goon Mountains at several stations; Chiricahua Mountains in "White Tail canyon and below Paradise (Pilsbry and Ferriss). Never at high elevations. Bifidaria perversa STERKI, Nautilus, xii, Dec. 1898, p. 90. — PILSBRY and FERRISS, Proc. A. N. S. Phila., 1906, p. 144; 1910, p. 137, fig. 29. — ASHMUN, Nautilus, xiii, p. 14 (Ephraim canyon, Santa Rita Mts.). This species resembles G. ashmuni rather closely. The straightened part of the last whorl is somewhat longer, though the length of the free portion varies. There are also slight differences in the details of the teeth. Fresh specimens are very pale brown. As in G. ashmuni, the shell is extremely thin. It has been found only in Maricopa, Pima, Santa Cruz and Cochise counties, in southern Arizona. I have never found it so abundant as G. ashmuni. 9. GASTROCOPTA ASHMUNI (Sterki). PL 6, figs. 5, 6, 7. Shell cylindro-conical, with the apex rather acute, base perforated-rimate ; whorls five, convex, with a rather deep suture, regularly increasing, the last somewhat protracted, 42 GASTROCOPTA, NORTH AMERICA, WEST INDIES. with a crest remote from the aperture and forming a project- ing angle at the base; at last ascending; aperture strongly lateral, rounded subtriangular, equaling one-third the alti- tude of the shell, highest near its columellar side, with a sinus above on the palatal side ; margin continuous, strongly everted, broadest so below, without a lip thickening; parietal lamella very large, strongly curved, nearer the periphery at its inner end; angular lamella large, at its inner end united with the side of the parietal, at the outer with the palatal FIG. 13. Gastrocopta ashmuni. a, 6, Florida Mts., N. M. ; c, Oak Creek, Yavapai Co., Ariz. margin, thus closing the sinulus above; columellar lamella large, spiral, ascending to the body whorl between the pari- etal and columella; basal lamella and inferior palatal fold deep in the throat, the former radial, the latter above it, oblique ; superior palatal short, tooth-like, rather remote from the margin; surface shining, with slight, irregular striae and microscopically rugulose, as is also the nucleus; shell horn- colored, transparent; lamellae and folds whitish. Alt. 2, diam. 1.1 mm. (Sterki). From Valencia Co., New Mexico, and the southern rim of the Grand Canyon, Arizona, south to the Mexican boundary from Nogales, Arizona, to the Big Hachet Mountains, New GASTROCOPTA, NORTH AMERICA, WEST INDIES. 43 Mexico; and from the Organ Mountains and Whiteoaks, Lin- coln Co., N. M., on the east, to the vicinity of Jerome, Yava- pai Co., Arizona, on the west. Chiefly in broken country and foothills, but up to about 8000 ft. in some places. Bifidaria ashmuni STERKI, Nautilus, xii, Sept. 1898, p. 49 (Santa Rita Mts., Arizona, Ashmun; Cook's Peak and Drip- ping Spring, Organ Mts., N. M., Cockerell). — ASHMUN, Nau- tilus, xiii, p. 14 (Santa Eita Mts., 20 miles from Crittenden). — PILSBRY and FERRISS, Proc. A. N. S. Phila., 1906, p. 144; 1910, pp. 137-139, f. 30. — Bifidaria ashmuni form minor STERKI, Nautilus, xii, Dec. 1898, p. 92 (Nogales, Arizona). — PILSBRY and FERRISS, Proc. A. N. S. Phila., 1910, p. 139, f. 31. — ASHMUN, Nautilus, xiii, p. 14. This species is readily known by the strong development of the angulo-parietal lamella, the very deep immersion of the lower palatal and basal folds, the anterior continuation of the columellar lamella upon the parietal wall, alongside the parietal lamella, and the long, gibbous neck of the last whorl. It is a common species within the limits given above, the territory being well covered by over fifty lots in the museum of the Academy, collected chiefly by Ashmun, Ferriss and the writer. The typical form of G. ashmuni is nearly cylindric, taper- ing but slightly, composed of five strongly convex whorls. The last whorl becomes straightened and slightly sinuous in basal view, and has a more or less conspicuous oblique swell- ing or crest some distance behind the aperture. This crest is not always so strong, as shown in fig. 13 c (a specimen from Page's Ranch, Oak Creek, in central Arizona), and sometimes it varies from strong to wanting in the same lot. The peri- stome is well expanded, continuous, and usually stands shortly free from the whorl in front. The parietal lamella is sig- moid, bending far to the right at its inner end. The angular lamella, also sigmoid, runs from the peristome to the parietal lamella, the two lamellae together forming a figure like the letter A.. The columellar lamella is broad and horizontal far within, arising a half -whorl back (pi. 6, fig. 7), then sinuated where the basal plica approaches it, as shown in pi. 6, fig. 6, 44 GASTROCOPTA, NORTH AMERICA, WEST INDIES. but near the aperture it runs out upon the parietal wall, where it appears as a more or less elevated cord between the parietal lamella and the columella, occupying, therefore, the place of an infraparietal lamella. These lamellae are well shown in fig. 13 &, a basal view in which the base of the shell has been removed. The upper palatal fold is short, situated some distance within the mouth, but visible from in front. The lower palatal is long, entering, and so deeply immersed that it is not visible in a front view, being concealed behind the massive parietal barrier. There is a radially-placed basal fold, scarcely or not visible in a front view ; the edge is seen in pi. 6, fig. 6. Length about 2, diam. 1 mm. 9a. Form minor Sterki. "Smaller than the types, 1.5 to 1.9 mm. high; the shell is also thinner, the color paler, the FIG. 14. G. ashmuni minor. Nogales. everted part of the lip less broad, the number of whorls one- half to one less" (Sterki). Length about 1.6 mm., with 4 to 4% whorls. The structure is otherwise substantially as in ashmuni. Arizona: Nogales; also on the Mexican side of the inter- national boundary, and Ephraim canyon, Santa Rita Mts. (E. H. Ashmun). Dragoon Mountains, in colonies with the typical form (Pilsbry, Ferriss and Daniels). 10. GASTROCOPTA COCHISENSIS (Pilsbry and Ferriss). PL 6, figs. 1 to 4, 8. The shell is rimate, slightly tapering-cylindric, thin, pale GASTROCOPTA, NORTH AMERICA, WEST INDIES. 45 brown, composed of 5% strongly convex whorls, the last third of a whorl straightened. Striation faint. The aperture is squarish with rounded angles. Peristome rather broadly ex- panded, thin, brownish, interrupted on the parietal margin, or continuous by a fine thread. Parietal lamella high, its inner end distinctly curving towards the periphery. Angular lamella about half as high as the parietal, slightly sigmoid. Columellar lamella strong, short, its inner half descending somewhat. Palatal plicae all visible in a front view. The upper one is rather high and short, not far within; lower one deeply immersed, partly concealed behind the parietal in a front view'; basal plica radial (transverse to the cavity), deeply immersed. Length 2.2, diam. 1.1 mm. | ~ . V Cotypes. Length 2.5, diam. 1.1 mm. j Length 2.15, diam. 1.1 mm. Santa Rita Mts. G. cochisenais. Santa Rita Mts., Arizona. Arizona: Chiricahua Mountains, on the summit of Cross J Mt., Big Emigrant canyon, about 8000 ft.; White Tail can- yon; Limestone Mountain (Pilsbry and Ferriss). Huachuca 46 GASTROCOPTA, NORTH AMERICA, WEST INDIES. Mts., in Tanner canyon (Ferriss). Santa Rita Mountains (E. H. Ashmun). Drift of the Santa Cruz River, Pima Co. (Pils- bry). Santa Catalina Mts. at Alder Springs and Marble Peak (Ferriss). Bifidaria cochisensis PILSBRY and FERRISS, Proc. A. N. S. Phila., 1910, p. 139, figs. 32, 33. This species differs from G. ashmuni in the following fea- tures: All the teeth are smaller. The columellar lamella is very much shorter, and does not continue forward upon the parietal wall. The palatal plicae are less deeply immersed, all being visible in a front view in the aperture. The parietal and angular lamellae are much less curved. The last whorl is less protracted, never free in front, with a lower crest or wave on the neck, or none. It is far less widely distributed than G. ashmuni, and even in its area is of less general occurrence, all of the known localities being given above. 11. GASTROCOPTA OLIGOBASODON (Pilsbry & Ferriss). PI. 7, figs. 8, 9, 10, 11. The shell resembles G. cochisensis, from which it differs in the following details : All of the teeth are smaller. The pari- etal and angular lamellae are far less curved, and the angular joins the parietal near the outer end of the latter. The colu- mellar lamella is much shorter (pi. 7, fig. 8). The basal plica is reduced to a minute tubercle, or in some individuals it seems to be wanting. The parietal margin of the peristome is adnate for a greater distance. Length 2.6, diam. 1.1 mm. Length 2.1, diam. 1 mm. Arizona: Ash canyon, Huachuca Mts., type loc. (Ferriss) ; Lower Rucker canyon, Chiricahua Mts. (Ferriss). New Mex- ico: drift debris of the Mimbres River at Swartz P. 0. and near Deming (Pilsbry & Ferriss) ; debris of Rio Grande at Mesilla (Cockerell). Bifidaria cochisensis oligobasodon PILS. & FERR., Proc. A. N. S. Phila., 1910, p. 141, figs. 34a-c. This shell was formerly considered a subspecies of G. cochi- GASTROCOPTA, NORTH AMERICA, WEST INDIES. 47 sensis, but having carefully gone over larger series of both, than I had seen in 1910, I fail to find any really connecting examples. It stands nearer G. prototypus, but differs in the shape of the columellar lamella, which is placed somewhat obliquely, and descends inward as a whole, while in proto- typus the whole lamella is horizontal but with a thickening c FIG. 16. G. oligobasodon. Ash canyon, Huachuca Mts. below its inner end, and another running upwards. The lower palatal plica is far more deeply placed in oligobasodon than in prototypus. In a large series of prototypus exam- ined, none has a basal plica. In oligobasodon this fold is rarely absent. 12. GASTROCOPTA PROTOTYPUS (Pilsbry). PL 7, figs. 1 to 5. The shell is shortly rimate, subcylindric, slightly tapering upwards, light brown, lightly striate, with but little gloss; composed of 5% strongly convex whorls, the last without any trace of a wave or crest behind the lip or on the neck. The aperture is squarish-oval; peristome thin, well expanded except near the upper end of the outer lip; insertions sep- arated by nearly half the width of the mouth. Both angular 48 GASTBOCOPTA, NORTH AMERICA, WEST INDIES. and parietal lamellas are nearly straight, diverging in front of their union, which is marked by a notch. The inner end of the parietal lamella bends a little towards the periphery. Columellar lamella horizontal, the inner end having a small white callous below, not visible from in front. There is also a callous running up the columellar axis, but it is nearly colorless (pi. 7, figs. 2, 4). The upper palatal plica is minute, tubercular; the lower is larger, and a little more deeply placed. No basal fold. Length 2.55, diam. 1.1 mm. Mexico: Huingo, in the State of Michoacan (type loc. ; S. N. Ehoads) ; Guadalajara, State of Jalisco (McConnell and Crawford). Bifidaria prototypus Pils., Proc. A. N. S. Phila., 1899, p. 400; 1903, p. 766, pi. 50, f. 7, 7a; 1910, p. 142, f. 35. This species stands nearest G. oligobasodon, but differs by the less deeply immersed lower palatal plica, the absence of a basal plica, and the shape of the inner end of the longer columellar lamella (compare pi. 7, figs. 2 and 8). The pari- etal lamella extends a little further forward of the junction of the angular lamella than in oligobasodon. The specimens from Guadalajara vary in size : length 2.45, diam. 1.1 mm., to length 2.2, diam. 1.03 mm. It may be regarded as a connecting link between typical Gastrocopta and Immersidens. 12a. G. prototypus basidentata n. subsp. PI. 7, figs. 6, 7. These shells agree in form and size with prototypus, but differ by having a well-developed basal fold. The columellar lamella is strong and horizontal, not short as in B. oligo- ~basodon. The inner end of the angular lamella unites with the parietal lamella (fig. 7), as in prototypus. The outer lip is thin, with no crest back of it. The figured shell measures, length 2.35, diam. above aperture 1.05 mm. Locality, Guatemala City (type no. 190017 U. S. Nat. Mus., from Sr. Gomez). This form needs to be compared with G. pazi (Hidalgo) when authentic specimens of that species become available. GASTROCOPTA, NORTH AMERICA, WEST INDIES. 49 13. GASTROCOPTA DALLIANA (Sterki). PL 8, figs. 5 to 9. "Shell minute, ovate-turriculate, perforate-rimate, pale horn-colored, translucent; apex somewhat obtuse; whorls 5, regularly increasing, convex, with the suture deeper between the upper than the lower whorls ; the last whorl ascending at the aperture, compressed at the periphery, especially so toward the aperture, with a slight, shallow crest-elevation, its base narrow except just behind the aperture, where there is a slight depression; surface with very fine, crowded striae; aperture equaling a little over one-third of altitude, almost as wide as high, rounded below, with three almost equal angles above, margins approximate, somewhat extended upward and connected by a slight, straight callous, somewhat everted, especially below, without a thickened lip. Lamellae and folds : angular and parietal rather large, connected but distinct, the former ending at the margin; a nodule-like infraparietal ; columellar rather large, lamellar, horizontally encircling the somewhat projecting columella; basal transverse (radial) on the impressed part of the base, short lamellar, abrupt; pari- etal folds approximate, the superior rather short, the inferior longer, deeper in the throat, somewhat oblique. Alt. 1.6 to 1.8, diam. 0.8 to 0.9, apert. alt. 0.6 mm." (Sterki). Southeastern Arizona: Nogales (type locality) and Santa Kita Mts., Santa Cruz Co. (Ashmun) ; mouth of Sabino canyon, Santa Catalina Mts., Pima Co. (Ferriss) ; Eagle Creek, Graham Co. (Ferriss) ; Dragoon and Chiricahua Mts., Cochise Co. (Pilsbry and Ferriss). Bifidaria dalliana STERKI, Nautilus, xii, Dec. 1898, p. 91. — PILSBRY and VANATTA, Proc. A. N. S. Phila., 1900, p. 593, pi. 22, f. 8.— PILSBRY and FERRISS, Proc. A. N. S. Phila., 1910, p. 143, f. 36a. — ASHMUN, Nautilus, xiii, p. 14 (Ephraim can- yon, Santa Rita Mts.). The shell is generally smaller than G. hordeacella, the an- gulo-parietal lamella is conspicuously complex, and the basal plica is transverse instead of entering. It is related to G. bttamellata, from which it differs by the more cylindric shape, the less diverging outer ends of the parietal and angular lamellae, and the simple columellar lamella. The ends of the 50 GASTROCOPTA, NORTH AMERICA, WEST INDIES. lip are rather widely separated in dalliana, connected in bila- mellata. The shell is very fragile and usually dirty, like all the species of the same section. The inner end of the angular lamella lies adjacent to the outer end of the parietal, with a lower connecting callous between them. The parietal may project slightly forward of the junction, or it may stop there. Its inner end usually bends a trifle outward. The columellar lamella is stout and transverse (pi. 8, fig. 8). Fig. 17 is from a paratype. Length 1.8, diam. 0.8 mm. In the Chiricahua and Dragoon mountains it is often larger than the types, up to 2 mm. long, .85 wide. The basal fold is usually longer than in the typical form. FIG. 17. G. dalliana. FIG. 18. G. bilamellata. 13&. G. dalliana media n. subsp. PL 8, figs. 10, 11. The shell is like dalliana in size, shape and fragility. It differs by having a callous buttress below the inner end of the columellar lamella (pi. 8, fig. 11). This is much less devel- oped than that of G. bilamellata. The parietal and angular lamellae are less intimately united, and the former reaches further forward (pi. 8, fig. 10). The terminations of the lip are rather widely separated, as in dalliana. Distribution. — Arizona: Montezuma's Well, several miles GASTROCOPTA, NORTH AMERICA, WEST INDIES. 51 north of the S. P. Railroad close to where it enters Maricopa Co. from the east, type loc. ; 5 miles south of Jerome, Yavapai Co. (Ashmun). The localities of media are west of all those known for G. dalliana, but its range seems to be overlapped by the eastern extension of bilamellata. Its structural characters are be- tween the two. 14. GASTROCOPTA BILAMELLATA (Sterki and Clapp). PI. 8, figs. 1 to 4. "Shell small, slender, cylindrical or slightly attenuated above, with an obtuse apex, perforate; whorls 5%, sub- equal, the apical ones comparatively large; colorless to pale or reddish-horn (so far as can be seen from drift specimens), transparent; surface shining, with very fine, crowded, sub- regular striae, on the apex microscopically rugulose; the last whorl ascending above, somewhat flattened at the base close to the aperture, keel-like further back, somewhat flattened over the palate, with a slight to strong, not sharp, crest be- hind the margin, with two spiral impressions, one over the lower palatal and another near the base; aperture broadly elliptical to almost circular, peristome continuous or its ends closely approximate and connected by a raised callous, well everted, with a slight to rather strong lip thickening ; lamellae and plicae, parietal and angular, well differentiated, con- nected, large, the angular connecting with the peristome; columellar complex, with a lower axial and an upper hori- zontal part; * basal ' a short, transverse lamella, rather abrupt ; lower palatal far remote from the margin, but visible in front view, rather long, lamellar, thin ; upper palatal some- what less deep-seated, close to the lower, somewhat oblique, shorter. "Alt. 2-2.4, average 2.2, diam. 0.9 mm.; aperture alt. 0.8 mm. Soft parts not seen" (Sterki). Arizona : foothills of Plumosa Eange, about 8 miles east of Quartzsite, Yuma Co., in drift (type loc.; G. S. Hutson) ; Salt River drift, Tempe, Maricopa Co. (Pilsbry and Ferriss). Bifidaria bilamellata STERKI and CLAPP, Nautilus, xxii, 52 GASTROCOPTA, NORTH AMERICA, WEST INDIES. March, 1909, pi. 8, f. 7.— STERKI, Nautilus, xxii, April, 1909, p. 126.— PILSBRY and FERRISS, Proc. A. N. S. Phila., 1910, p. 143, f. 366. This species, which replaces G. dalliana in western Ari- zona, differs from that by the longer, more tapering shell, the nearly or quite continuous peristome and the shape of the columellar lamella, which has a vertical portion running down from its inner end, longer than in G. d. media. The parietal lamella runs forward further than in G. dalliana. In the type locality it was found in company with G. hordeacella and C. intuscostata, in the ratio of about 1 ~bilameUata to 16 hordea- cella (text fig. 18). The specimens from Tempe are typical in all respects, and occurred with the same and other species in the drift debris. The largest and smallest measure : Length 2.35, diam. .83 mm. Length 1.95, diam. .8 mm. Subgenus PRIVATULA Sterki. Privatula STERKI, Nautilus, vi, p. 101, 1893, monotype P. corticaria Say. The shell is whitish, without palatal callous or folds, the columellar lamella minute, tubercular, angulo-parietal lamella small and straight, its crest bilobed. The teeth are reduced more than in any other Gastrocopta. Only one species is known. It is probably related to Albinula and Sinalbinula, from which it differs by the absence of pala- tal callous and plicae. 15. GASTROCOPTA CORTICARIA (Say). PI. 10, figs. 1 to 4. The shell is minutely rimate, nearly cylindric, tapering slightly to the very obtuse summit; thin, translucent- white, almost smooth, very faintly marked with growth-lines. Whorls 5%, quite convex, the last rounded basally, without a crest behind the lip. Aperture irregularly oval; peristome thin, well expanded, the lip-ends widely separated. Angular and parietal lamellae united into one small bilobed lamellae, or almost separate. Columellar lamella very low, subvertical, a minute tubercle in front of its lower end. GASTROCOPTA, NORTH AMERICA, WEST INDIES. 53 Length 2.5, diam. 1 mm. Maine and Ontario to Minnesota, south, to St. Simon's Island, Georgia, northern Alabama and Alexandria, Louisi- ana. Type locality, Philadelphia, Pa. Odostomia corticaria SAY, Nicholson's American Encyclo- pedia, ii, pi. 4, fig. 5, 1816. — Pupa corticaria Say PFEIFFER, Monogr. Hel. Viv., ii, 228; vi, 304.— BINNEY, Terr. Moll., ii, p. 339, pi. 72, f. 4.— W. G. BINNEY, Terr. Moll., v, 1878, p. 209, f. 113, 114, pi. 72, f. 4. — Leucochila corticaria Say, MORSE, Terr. Pulm. Maine, p. 36, f. 87, pi. 10, f. 88. G. corticaria has the teeth more reduced than in any other Gastrocopta. The angular lamella is variable, sometimes rather well developed, as in figures 1,«4, sometimes minute, and scarcely united with the parietal lamella, and in some apparently mature shells it is entirely wanting. The very low columellar lamella runs vertically on the back of the rather large axis, and either turns outward in a short hori- zontal limb at the lower end, or a very low tubercle, visible from in front, stands in front of its lower end (pi. 10, fig. 3). As the name denotes, G. corticaria is often found crawling upon trees a foot or two from the ground. While generally distributed, it rarely occurs in abundance, and is not known from the higher Catskills, southern Alleghanies, or other ele- vated regions. So far as I have seen specimens, its western limit is in Minnesota, Iowa and Arkansas. No local or geo- graphic races have been noticed. Subgenus GASTROCOPTA Wollaston. Gastrocopta WOLLASTON, Test. Atlant., 1878, p. 515. — Bifi- daria STERKI in Pilsbry, Proc. A. N. S. Phila., 1891, p. 315. —EuUfidaria STERKI, Nautilus, vi, p. 101, 1893, type "P. hordeacea Gabb" of Sterki, — G. cristata (Pils. & Van.). The shell is rimate, cylindric or oblong-conic, having the angular and parietal lamellae concrescent into a sinuous or bifid lamella; columellar lamella horizontal, short. Palatal folds not standing upon a callous ridge, the upper and basal sometimes wanting, the basal, when present, in the base of the aperture, not subcolumellar in position. 54 GASTROCOPTA, NORTH AMERICA, WEST INDIES. Type G. acarus (Bens.). Distribution, tropical and warm temperate portions of America and Africa; Mascarene Is., Ceylon, the Philippines and Hawaiian Islands. This group is developed in warm temperate and tropical America, chiefly from the southern tier of states in the United States to the Argentine Republic. They are the common and abundant Pupae of much of these regions. Besides its distri- bution in North and South America (species nos. 16 to 32), where the greatest number and variety of species have been found, typical Gastrocoptas inhabit Africa and the islands in the Indian Ocean (species nos. 66 to 76), Ceylon and per- haps India (species 77, 78), the Philippines and Oahu (spe- cies nos. 86, 87). Gastrocopta appears to be related to Immersidens, but not closely to the northern group of subgenera, Albinula, Sinalbi- nida, etc. Among other significant differences, the position of the basal plica may be noted. In Albinula, Sinalbinula and Vertigopsis this plica is more or less obviously subcolumellar in position; so much so that many describers have referred to it as a second or inferior columellar tooth. In Gastrocopta and Immersidens it never assumes a subcolumellar position. The species are much alike and partly difficult to distin- guish, both from the absence of salient differential charac- ters, and in some cases from the resemblance of simplified members of different specific stocks. They are especially vari- able in the development and prominence of callosities or tubercular teeth below and above the columellar lamella, and the prominence of the crest behind the outer lip, and are somewhat variable in the degree of concrescence of the angu- lar and parietal lamellae. Moreover, a number of the species have been so imperfectly defined that positive decisions are at present unattainable. Key to North American and Antillean Species. a. Lip distinctly or heavily calloused within. b. Form distinctly tapering; callous of the lip heavy. c. Corneous or whitish, the lip white. G. rupicola, no. 17. GASTROCOPTA, NORTH AMERICA, WEST INDIES. 55 c1. Cinnamon-colored, the lip tinted. d. Subcolumellar nodule present. G. r. duplex, no. 17&. d1. No subcolumellar nodule or callous. G. r. marginalba, no. 17c. Form cylindric. c. Parietal lamella strongly bifid in a front view. d. Small, length 2 to 2.45, diam. 1 mm. or less. e. Lower palatal plica not very deeply immersed; Antilles. G. barbadensis and var., nos. 24, 24a. e1. Lower palatal plica deeply im- mersed; Dakota to New Mexico. G. p. mcclungi, no. 18c. d1. Larger, length 2.25 to 3, diam. 1 mm. or more. e. Anterior end of parietal lamella not conspicuous. /. Lip heavily calloused. g. A callous below colu- mellar lamella. G. procera, no. 18. g1. No callous below colu- mellar lamella. G. p. riparia, no. 18a. /x. Lip callous thin; an infra- parietal often developed. G. riograndensis, no. 20. e1. Anterior end of parietal lamella distinctly projecting. /. Lip-callous marginal. G. p. mcclungi, no. 18c. jf1. Lip-callous further within. G. p. duplicata, no. 18&. c1. Parietal lamella simpler, sinuous. d. Larger, strongly crested, 2.3 to 3.2 mm. long, more than 1 mm. wide; Oklahoma to Arizona. G. cristata, no. 19. 56 GASTBOCOPTA, NORTH AMERICA, WEST INDIES. d1. Smaller, 2 to 2.2 mm. long, 0.9 mm. wide; Bimini Islands. G. p. biminiensis, no. 22a. a1. Lip thin, not calloused within. b. Having 5 well-developed teeth, a basal fold present. c. Diam. usually over 1 mm., about 2.5 mm. long; brownish. d. No crest behind the lip; parietal tooth not strongly bifid, no infraparietal tu- bercle. G. servilis, no. 21. d1. A narrow crest; parietal bifid; an infra- parietal nodule often developed. G. riograndensis, no. 20. c1. Diam. 1 mm. or less; length 1.5 to 2.6 mm. d. Parietal strongly bifid; a callous or tooth below the columellar lamella. e. An infraparietal nodule present. G. polyptyx, no. 25. e1. No infraparietal tooth. G. barbadensis, no. 24. d1. Parietal sinuous or emarginate, but not distinctly bifid. e. Diam. one-third the length; Cura- cao. G. longurio, no. 23. e1. Somewhat wider. G. pellucida and varr., no. 22. d2. Parietal simple and straight, angular wanting or minute. e. Ovate-conic, 1.2 x 1 mm.; peri- stome not expanded; Ohio. G. carnegiei, no. 6. e1. Cylindric, 1.7 x 0.9 mm.; peri- stome expanded; Arizona, New Mexico. G. p&sbryana, no. 7. c*. Having 4 strongly-developed teeth, the an- gulo-parietal almost simple; no basal fold; shell albino; New Mexico and Arizona. G. qitadridens, no. 16. GASTROCOPTA, NORTH AMERICA, WEST INDIES. 57 c3. Teeth small, the basal fold usually wanting, upper palatal plica minute when present. d. Length 2.2 to 2.4, diam. 0.95 mm.; St. Thomas. G. riisei, no. 21a. d1. Slightly narrower, with deeper suture; Arizona. G. p. parvidens, no. 22d. d2. Length 1.36 to 1.55 mm., 4 to 4y2 whorls; very thin arid fragile; Bimini Islands. G. p. delicata, no. 22&. 16. GASTROCOPTA QUADRIDENS Pilsbry, n. n. PL 10, figs. 7, 10. "Shell narrowly perforate-rimate, conical-turriculate, with the apex somewhat obtuse; colorless, glassy; surface very slightly striated, shining; whorls 6, gradually increasing, with the suture rather deep between the upper, less so be- tween the lower whorls; the last whorl moderately ascending at the aperture, rather rounded at the base, slightly expanded near the aperture, with an impression over the inferior palatal fold; aperture rather oval, truncated above, margins well everted, the palatal somewhat more curved than the columel- lar, the two connected by a thin callous; lamellae and folds four, subequal; angulo-parietal appearing almost simple, in- clined toward the columella; columellar horizontal, rather short and strong, palatals rather short and stout, in normal position, the inferior somewhat larger and more remote from the margin. Alt. 2.4 to 2.8, diam. 1.3; apert. alt. 1.0 mm." (Sterki). New Mexico: Capitan Mts., Lincoln Co. (type loc. ; E. H. Ashmun) ; Black Kange, Sierra and Grant Cos. (Ferriss and Pilsbry). Arizona: Bill Williams Mt., Coconino Co. (Pilsbry and Ferriss) ; Mt. Mingus, near Jerome, Yavapai Co. (Ash- mun) ; Santa Catalina and Chiricahua Mts. (Ferriss). Bifidaria quadridentata STERKI, Nautilus, xii, March, 1899, p. 125. Not Pupa quadridentata Klein, 1853, also a Gastro- copta. — Bifidaria quadridens Sterki, PILSBRY and VANATTA, Proc. A. N. S. Phila., 1900, p. 607 (lapsus calami). This is a strikingly distinct species. By the very thin, translucent, paraffine-white shell, without a crest behind the 58 GASTROCOPTA, NORTH AMERICA, WEST INDIES. thin lip, it recalls G. corticaria, which is perhaps the species most nearly related. The angulo-parietal lamella is simple, as in pentodon or pilsbryana, or sometimes the extremely minute trace of the forward end of the parietal lamella appearing as a branch on the columellar side, may be seen near the outer end. The lower or free edge of the parietal lamella is bent towards the columella as in G. cristata. The lower palatal fold is usually rather long. The columellar lamella is trans- verse, as in the procera group, and there is no callous below it. In a great number I have seen, none has a basal plica. It is a common shell in the heavily-forested and humid upper zone of the Santa Catalina Mountains, north of Tuc- son, and in the Black Range, New Mexico, but very rare in the Chiricahua Range, at the southern limit of the species,, where it occurred in Barfoot Park, 10,000 ft. elevation. Its stations are chiefly between 7,000 and 11,000 ft., and never at low levels. As the name quadridentata is in use for a species of Gas- trocopta from the German Upper Miocene, I am substituting quadridens, which although used for the species in 1900 quite inadvertently, and with no intention to form a new name,, may serve now that the original name is not admissible. I have a strong suspicion that this species, like G. corticaria, belongs to the same stock as Sinalbinula and Vertigopsis, and should form another subgenus; yet for the present it is left with the rwpicola group, which it resembles in general fea- tures. 17. GASTROCOPTA RUPICOLA (Say). PI. 11, figs. 1, 2, 3, 5, 6. 1 i Shell dextral, attenuated to an obtuse apex, white ; whorls; six, glabrous; suture deeply impressed; labium bidentate; superior tooth lamiform, emarginate in the middle, and at the anterior lip obsoletely uniting with the superior termination of the labium; inferior tooth placed upon the columella, and extending nearly at a right angle with the preceding ; labrum tridentate, teeth placed somewhat alternately with those of the labium, inferior tooth situated at the base and imme- diately beneath the inferior tooth of the labium. Length, one-tenth inch ' ' ( Say ) . GASTROCOPTA, NORTH AMERICA, WEST INDIES. 59 Length 2.5 to 2.2 mm. South Carolina to the keys of south Florida, west along the Gulf coastal plain to Galveston, Texas. Bermuda. North Cat Cay, Bimini group, Bahamas. Type locality, ruins of Fort Picolato, St. John's River, Florida. Pupa rupicola SAY, Journ. Acad. Nat. Sci. Phila., ii, 1821, p. 163. — GOULD, Boston Journal of Natural History, iv, 1843, p. 355, pi. 16, f. 13.— BINNEY, Terr. Moll., iii, pi. 70, fig. 1 (left and central figs. ) .— STERKI, Nautilus, iv, 1891, p. 139.— Bifidaria rupicola (Say), PILSBRY and VANATTA, Proc. A. N. S. Phila., 1900, p. 595, pi. 22, f. 1. This species tapers upwards much more than G. procera, which is subcylindric. G. servilis has a thinner lip. In G. rupicola the outer and basal margins of the peristome are spreading, broad, and conspicuously thickened by a heavy white callous within the sharp edge. This callous is narrowed near the posterior angle as usual. The angulo-parietal lamella shows a small lateral spur in the front view. Seen from below (pi. 11, fig. 6) it is very slightly sinuous, nearly straight except in front, where it curves outward to unite with the outer lip. The columellar lamella consists of a very low, vertical portion which bends forward below, forming a strong horizontal portion (fig. 5). The lower palatal plica is not much lengthened, but is larger and more deeply placed than the upper. There is a narrow and low but distinct crest close behind the lip, and a flattening over the position of the lower palatal plica. Length 2.5, diam. 1.1 mm.; 5% whorls. The color varies from very pale brown to corneous, the sur- face being very finely, rather irregularly striate. In some places the average size is smaller, as at Miami, Florida. In other colonies, as at Lossman's Key, in the Ten Thousand Islands (pi. 11, fig. 1; length 2.2 mm., 5 whorls) both the maximum and the minimum sizes were found living together, the smallest 2.1 mm. long. There is a more or less developed callous buttress under the inner end of the parietal lamella in this and some other lots, while in typical rupicola it is absent or only weakly developed. PL 11, fig. 3, is abnormal in having the lower palatal plica doubled, but such abnormalities are not uncommon. 60 GASTROCOPTA, NORTH AMERICA, WEST INDIES. The continental rupicola is an albinistic race, the insular marginalia being more normal for the group in color. Before 1890, this species was thought to include G. procera Old., and the name was so used in the writings of W. G. Bin- ney and others. Gould, and afterwards Sterki, pointed out the differential characters. G. rupicola matacumbensis n. subsp. PI. 14, figs. 1, 2, 3. The shell is fragile, milk-white, without a crest behind the reflected lip; the latter being only slightly or moderately thickened, very much less than in typical rupicola. There is a callous below the inner end of the columellar lamella. All of the teeth are somewhat smaller than in rupicola. Length 2.5, diam. 1.1 mm. (type). Length 2.35, diam. 1.1 mm. Length 1.85, diam. 0.93 mm. Lower Matacumbe Key, Florida, near the water-tank (Geo. H. Clapp). Some dwarf specimens from the same place are less than 2 mm. long, with the aperture relatively larger (pi. 14, fig. 3). It was taken in abundance by Mr. Clapp. The lip is thicker than in G. servilis, which has not been found in Florida. 17&. G. rupicola duplex n. subsp. PI. 11, figs. 4, 7, 9. The shell is similar in shape and size to the typical form, but cinnamon-colored, having the lip white and not greatly thickened. The columellar lamella is heavily calloused above and below, the lower callous more or less distinctly tuberculi- form (fig. 7). Bermuda: Bailey's Bay and other localities. Type and paratypes no. 105797 A. N. S. P., from above Whitby Cave. 17c. G. rupicola marginalba (Pfeiffer). PL 11, figs. 10 to 13; pi. 10, figs. 6, 8, 9. The shell is cinnamon-colored, form convexly- tapering ; a crest (sometimes weak) behind the lip. Lip-callous heavy, also cinnamon-colored. Angulo-parietal lamella more dis- tinctly bifid in front view than that of typical rupicola; and typically the front end of the parietal lamella projects more GASTROCOPTA, NORTH AMERICA, WEST INDIES. 61 or less on the columellar side (pi. 10, figs. 8, 9). The colu- mellar lamella is simple, short and horizontal, its inner end having only a very low, hardly perceptible buttress below. The lower palatal plica is a little longer than in rupicola. The surface is rather distinctly striate. Length 2.45, diam. above aperture 1.23 mm. Matanzas, fig. 13. Length 2.5, diam. above aperture 1.1 mm. Matanzas, fig. 12. Cuba: hillside west of Matanzas and on the west side of Matanzas Bay (Pilsbry) ; Loma de Capiro, Santa Clara; San Vicente de los Banos (J. B. Henderson) ; San Jose (Ch. Wright in U. S. N. M.). Jamaica (Gloyne in A. N. S. P.). Bermuda: Church Cave, near Tuckerstown, etc. (Vanatta, S. Brown and others). Pupa marginalia PPR., Wiegmann's Archiv. fiir Natur- geschichte, 1840, i, p. 253; Monographia Hel. Viv., ii, 1848, 356; iii, 555; iv, 680; vi, 327. — KUSTER, Syst. Conchylien Cabinet, p. 89, pi. 12, f. 22, 23. — Vertigo marginalba Pfr., POEY, Memorias sobre la Hist. Nat. Cuba, ii. p. 13. — ARANGO, Fauna Malacologica Cubana, p. 103 (Cogimar, under stones). This is a common shell around Matanzas (pi. 11, figs. 12, 13; pi. 10, figs. 8, 9), also in Bermuda (pi. 11, figs. 10, 11), varying considerably in shape and in the thickness of the lip. I have found beautiful albino specimens with the dark ones on the west side of Matanzas Bay, and it is evident that Pfeiifer's unique type was of this kind. The name was un- fortunate, for normally the lip is colored. The degree to which the angulo-parietal lamella appears bifid varies (pi. 10, figs. 8, 9) ; also the projection on the columellar side, which is sometimes wanting in lots where most shells have ft developed. Variety. — In some lots the parietal and angular lamellae are more fully concrescent, forming a nearly simple and more slender lamella, as in pi. 10, fig. 8. Some small and slender specimens from San Vicente Banos, Cuba (pi. 10, fig. 6), taken by Henderson, appear to me to be either a race of marginalba or a closely related subspecies. The angular lamella forms a lobe at its junction with the parietal, the anterior end of the latter projecting on the colu- 62 GASTROCOPTA, NORTH AMERICA, WEST INDIES. mellar side. The lip is not much thickened, less than in typical marginalba. Length 2.45, diam. above aperture 1 mm. Length 2, diam. above aperture 0.96 mm. Pfeiffer's original and later descriptions follow. Pupa marginalba Pf r. PL 11, fig. 8. ' ' Shell ovate- turrite, corneous, umbilicate ; whorls 5, convex ; lip rather thick, sub- expanded, white; aperture four-toothed. Length 1%, diam. y2 lines. Two small teeth in the outer lip, a third, larger, in the columella, and the fourth, largest, on the penult whorl near the insertion of the lip. A single specimen." Cuba (P/r., 1840). "Shell shortly rimate, subperf orate, oblong-ovate, thin, glossy, corneous; spire subturrite, the apex rather obtuse; 5% convex whorls. Aperture subrotund, four-toothed: one tooth on the parietal wall, one on the columella, two callous teeth in the lower part of the palate ; peristome white, shortly expanded, the margins joined by a thin callous. Length 2%, diam. 1% mm., aperture % mm. long" (P/r., 1848). Pfeiffer's original example was probably from Matanzas province, where he collected. Kiister states that the neck is somewhat flattened, with a callous (crest) running parallel to the lip ; the peristome has a pretty strong white lip. Like Pfeiffer, he describes only four teeth. PL 11, fig. 8, is copied from his plate. 18. GASTROCOPTA PROCERA (Gould). PL 12, figs. 1 to 5. The shell is shortly rimate, cylindric, with convexly conic, obtuse summit; cinnamon to sayal-brown, paler at the sum- mit, somewhat glossy, lightly, irregularly striate. Whorls 5%, rather strongly convex, the last one flattened in the region of the lower palatal plica, and slightly impressed over the basal plica; having a low crest (fig. 4) close behind the outer lip (variable in prominence). The aperture has five teeth. The angulo-parietal lamella is sinuous, showing a dis- tinct spur on the right side, in a front view; in basal view (pi. 12, fig. 5) this spur is seen to be the inner end of the angular lamella, while the parietal lamella forms a very in- GASTROCOPTA, NORTH AMERICA, WEST INDIES. 63 conspicuous projection of the outline on the left side, and its inner end curves slightly to the right. The columellar lamella is stout, transverse, nearly a half whorl long; below it there is a low tubercle (pi. 12, fig. 2; variable in prominence, and often not visible in a face view). The upper palatal plica is short, situated exactly opposite the spur of the parietal, and is rather deep within. Lower palatal plica is much longer, more deeply placed, its inner end reaching a dorsal position. The basal plica is short, about as deep within as the upper palatal. The peristome is thickened within by a strong, cin- namon callous ridge, in front of the lip-teeth, and excavated near the upper insertion. Length 2.5, diam. 1.1 mm. Length 2.3, diam. 1 mm. Eastern United States: Maryland to South Carolina, west to Shawnee Co., Kansas, and Payne Co., Oklahoma; south to Alabama and eastern Texas. Type locality, Baltimore, Mary- land. Pupa procera GOULD, Boston Journal of Nat. Hist., iii, 1840, p. 401, pi. 3, f. 12 (bad) ; iv, 1843, p. 359, pi. 16, f. 12. — STERKI, Nautilus, iv, 1891, p. 140 ; vi, 1892, p. l.—Bifidaria procera Gld., PILSBRY and VANATTA, Proc. A. N. S. Phila., 1900, p. 594, pi. 22, f. 6, 7.— WALKER, Occ. Pap. Mus. Zool. Univ. Mich., no. 15, 1915, pp. 2-10. — Pupa carinata GOULD, Boston Journal N. H.., iv, no. 1, 1842, cover ; t . c., no. 3, 1843, p. 359. — Pupa gibbosa Say, KUESTER, Syst. Conchyl. Cab., Pupa, p. 123, pi. 16, figs. 13-16 (in Nordamerika und Mex- ico). Not of Say. — Pupa minuta Say, PFEIFFER, Symbolae ad Hist. Hel., ii, 1842, p. 54; Monographia Hel. Viv., ii, p. 356. Not of Say. — Pupa rupicola Say, W. G. BINNEY, Land and Fresh-Water Shells of N. A., i, 1869, p. 243, f. 423, 424; Man. Amer. Land Shells, 1885, p. 328. Not of Say. G. procera differs from G. rupicola by its dark color, tinted or dark-colored lip, and more cylindric shape. Both have the lip heavily calloused within, but in continental G. rupicola the callous is always white, and the shell very pale. G. rupi- cola is an Austroriparian species, nowhere extending as far north as G. procera, but the latter extends south into part of 64 GASTROCOPTA, NORTH AMERICA, WEST INDIES. the rupicola territory. In some places, as at Galveston, G. rupicola, procera and hordeacella occur together in the same colony. I have seen G. procera from Cecil Co., Maryland, near the Pennsylvania line, and it may be expected to occur in Penn- sylvania, in the lower Susquehanna valley. There are records of "rupicola" from New England (Binney) and New York, which if not due to mixture of specimens or labels, as one may suspect, should pertain rather to procera. G. procera is found in the southern parts of all the states north of the Ohio Eiver, in Missouri and Kansas (Shawnee Co.), and west as far as Perkins, Payne Co., Oklahoma (D. K. Greger) ; also Texas, in Lee Co., where the form seems to me intermediate between procera and duplicata. In the west it may narrowly overlap parts of the areas of the subspecies duplicata and mcclungi, and in some New-Mexican lots, from the debris of the Rio Grande and Mimbres rivers, it is rather difficult to decide whether one has procera or mcclungi. Dr. Sterki has reported G. procera from Iowa and from Wiiiona, Minnesota (Nautilus, iv, 140), places further* north than any from which I have seen specimens; also Cincinnati, Columbus and Hamilton, Ohio (Proc. Ohio Acad. Sci., iv, 378). Baker recorded it from Joliet, Illinois (Moll. Chicago Area, pp. 20, 232). G. procera has been reported from Trini- dad, Colorado (Univ. of Colo. Studies, iv, 171), but the speci- mens are G. p. mcclungi. Pupa minuta was wrongly credited to Say by Pfeiffer, who gave the description translated below. He quoted Pupa gib- bo sa Say as a synonym, but the latter name was used only by Kiister, who figured it. These figures support the opinion of Binney that the shell was merely procera, rather a young one, apparently. P. minuta Say. Shell scarcely rimate, cylindric, glossy, pellucid, corneous, spire with the apex obtuse; aperture sub- semicircular, f our- toothed : teeth subequal, one parietal, one columellar, two palatal; peristome expanded, somewhat lipped, the margins separated, right margin arcuate above. Length 2%, diam. 1*4; aperture % mm. in oblique length. GASTROCOPTA, NORTH AMERICA, WEST INDIES. 65 Habitat in Pennsylvania. Is it not likely a variety of P. pro- ceraf (Pfr.). Pupa carinata Gould, from Maryland, was subsequently said by Gould to be an immature or broken procera. I8a. Form riparia (n. f.), pi. 12, fig. 6. Columellar lamella shorter, no callous or nodule below it. Teeth whitish, the palatals usually smaller than typical. Calera and Big Will's Valley near Valley Head, Alabama (H. H. Smith), and Gal- veston, Texas (type loc., Pilsbry). 18&. G. PROCERA DUPLICATA (Sterki). PL 12, figs. 7, 8; pL 13, fig. 7. The shell differs from procera by having the angulo-parietal lamella more complex, due to the less complete concrescence of the two component lamellae; the anterior end of the pari- etal is visible as a low, callous branch directed towards the columellar insertion (pi. 13, fig. 7). The parietal callous between ends of the lip is usually thick. The tubercle below the columellar lamella is typically strongly developed. Peri- stome and crest as in procera, of a very pale brown tint, and the callous thickening is heaviest a little inward from the edge* Length 2.9, diam. 1.2 mm.; nearly 6 whorls (typical). Length 2.25, diam. 1 mm. (smallest paratype). Distribution. — South Dakota to the Rio Grande. Type locality, Glenrose, Somerville Co., Texas. Bifidaria dupUcata STERKI, Nautilus, xxv, Feb. 1912, p. 116. It may be that this form of the subarid region deserves specific rank, but the difficulty of distinguishing many speci- mens from procera, owing to intermediate degrees of develop- ment of the angulo-parietal lamella, causes me to consider it a subspecies. It varies in size in each colony, as usual in the group. Around New Braunfels, Texas, where it is common, the maximum length is 3.3 mm., with barely 6% whorls. Localities for typical duplicate are : South Dakota : Wash- ington Co. (Over). Oklahoma: Fort Gibson (A. D. Brown coll.). Arkansas: Rogers, Benton Co. (Pilsbry and Ferriss). Texas: Glenrose, Somerwell Co. (type loc.); Austin; San Marcos, Hays Co. ; New Braunfels, Comal Co. ; near Hondo, 66 GASTROCOPTA, NORTH AMERICA, WEST INDIES. Medina Co.; Devil's Eiver, Val Verde Co. (Pilsbry and Ferriss) . Nearly all of the specimens seen are from stream debris, though many are so fresh that it is not likely they had floated far. In some lots, as that from New Braunfels, the form mcclungi occurs in the same debris; but it seems probable that this small, thick-lipped form lives in more arid situa- tions than the larger, darker-lipped duplicata. The area of mcclungi is much more extensive than that of duplicata west- ward, but in the east they are nearly coincident. The rela- tions of the forms can be more exactly estimated when gath- erings of living specimens come to hand. 18c. G. procera mcclungi (Hanna & Johnston). PL 13, figs. 1 to 5. The average size is smaller than procera or duplicata; whorls typically shorter. The face of the thick lip is convex, and the greatest thickness of the lip-callous is at (not within) the edge of the aperture. Teeth as in duplicata, the angulo- parietal lamella being bifid and forked in front (fig. 5), and there is a tubercular tooth below and partially united with the columellar lamella, which appears duplicated when the subcolumellar portion is strongly developed, as in fig. 4. There is a rather low crest behind the lip, and an external impression (sometimes wanting) over the lower palatal plica. Length 2.03, diam. 0.96 mm.; length 2.07 and 2.44, diam. 1 mm. (Hanna and Johnston). Length 2.26, diam. 1.08 mm.; fully 5 whorls (fig. 1, Clay Co., N. D.). South Dakota to the Rio Grande, Texas; west to eastern Colorado, the Eio Grande and Mimbres valleys, New Mexico, and Holbrook, Arizona. Type locality, pleistocene of Prairie Dog Creek, Phillips Co., Kansas. Bifidaria mcclungi HANNA and JOHNSTON, Kansas Univer- sity Science Bulletin, vii, no. 3, Jan. 1913, p. 119, pi. 18, f. 1, 2. A subspecies of the semi-arid country, now probably ex- tinct over much of its former territory, the limits of which are indicated above. Nearly all of the specimens known are GASTROCOPTA, NORTH AMERICA, WEST INDIES. 67 from stream debris. The type specimen is identical in form with figs. 1 and 2. Some specimens are longer (fig. 3). G. p. mcclungi is separated from G. p. duplicate chiefly by the character of the lip, as the shape and size of the shell are variable. Examples have been examined from the following places; all except the type lot in coll. A. N. S. P. : South Dakota : Indian Creek, Pennington Co. ; White River, Washington Co. ; Chamberlain, Brule Co. ; mouth Vermillion River, Clay Co. ; all collected by W. H. Over. Kansas: Lawrence (G. D. Hanna) ; pleistocene of Prairie Dog Creek, Phillips Co. (Johnston; type, no. 226395 U. S. N. M.). Colorado: Trinidad (Pilsbry) ; Pike's Peak (E. Hall). Arkansas: Rogers, Benton Co. (Pilsbry and Ferriss). Texas: New Braunfels (Ferriss and Pilsbry); Laredo (Orcutt). New Mexico: around Las Vegas and Mesilla (Cockerell) ; Albuquerque (Pilsbry and Ferriss) ; Santa Fe (Ashmun) ; Mimbres River near Swartz and near Deming (Pilsbry and Ferriss). Arizona: Holbrook (Ashmun). Many of the shells from New Mexico and Arizona could about as well be referred to typical procera as to mcclungi. The structure of the angulo-parietal lamella is intermediate, rarely so distinctly forked in front as in typical mcclungi, yet showing some trace of that structure, and sometimes dis- tinctly. The nodule below the columellar lamella is lower than in typical mcclungi, yet equal to that of many indi- viduals from Dakota and Kansas. In size the New-Mexican shells run from the ordinary length of mcclungi to that of the largest procera; two shells, the largest and smallest noticed in a large lot from near Deming, N. M., measure : Length 3, diam. above aperture 1.1 mm. Length 2.3, diam. above aperture 1 mm. Small specimens of mcclungi are very similar to the An- tillean G. barbadensis. The lower palatal plica, however, is placed more deeply in the throat in mcclungi. Specimens from Rogers, Benton Co., Arkansas (pi. 13, figs. 4, 5) have the teeth more strongly developed than any seen 68 GASTROCOPTA, NORTH AMERICA, WEST INDIES. from further west, the lip being very much thickened, as in the type specimen of mcclungi. The specimen figured meas- ures 2.4 mm. long, 0.95 wide. 19. GASTROCOPTA CRISTATA (Pilsbry and Vanatta). PL 13, figs. 6, 8 to 12. The shell is shortly rimate, cylindric, with convexly conic summit, the apex obtuse; glossy, brown, very finely, irregu- larly striate. 5% rather convex whorls, the last having a strong whitish crest parallel to and behind the lip, and sep- arated from it by a marked contraction. Behind the crest it is somewhat flattened over the lower palatal plica. The aper- ture has 5 teeth. The angulo-parietal lamella is not in the least bifid in front view, but has an obtuse prominence on the right side; its angular component is very low, and weakly connected with the outer lip ; the parietal is high, its anterior end forming a scarcely noticeable projection on the columellar side (pi. 13, fig. 9). The columellar lamella is rather short, horizontal, and below it there is a low callous (sometimes strengthened into a small but distinct tubercular tooth). The palatal plicae stand within the lip-callous; upper and basal ones are short, directly entering, lower plica deeply placed, shorter than in B. procera. The plicas are visible on the out- side as white marks behind the crest. The peristome is well expanded and thin at the edge, but there is a rather thick, pale brown callous rim a short distance within. Length 2.8, diam. 1.2 mm. Oklahoma: Fort Gibson (E. W. Hubbard) and Perkins, Payne Co. (D. K. Greger). Texas: 15 miles southeast of Amarillo ( J. B. Henderson) ; Pecos River drift, High Bridge, and Eio San Filipe, Del Eio (Pilsbry and Ferriss) ; Laredo (Orcutt) ; Hidalgo (Singley). New Mexico: Santa Fe; Mountain station, Oscuro Mts., Socorro Co. (Ashnmn) ; Me- silla (Cockerell) ; Albuquerque and Mimbres River near Deming (Pilsbry and Ferriss). Arizona: Navajo Springs; Holbrook; Camp Verde, Yavapai Co., type loc. (Ashmun) ; Salt River, Tempe; Santa Cruz R. at Tucson and Amados; San Pedro River, Benson (Pilsbry and Ferriss) ; Barbakoma Creek, Huachuca Mts. (Ferriss). GASTROCOPTA, NORTH AMERICA, WEST INDIES. 69 Pupa hordeacea Gabb, BINNEY, Terrestrial Mollusks, v, 1878, p. 205, f. 109 (bad).— STERKI, Nautilus, iv, 1891, p. 141; vi, 1892, pp. 4, IQl.—Bifidaria hordeacea Gabb, PILSBRY, Nau- tilus, xi, p. 117. Not Pupa hordacea Gabb. — Bifidaria procera cristata PILSBRY and VANATTA, Proc. A. N. S. Phila., 1900, p. 593, pi. 22, f. 4, 5.— WALKER, Occ. Pap. Mus. Zool. Univ. of Mich., no. 15, 1915, pp. 4-11 (distribution). While related to G. procera by its shape, color and size, this species differs by the simpler angulo-parietal lamella, which is not bifid at the summit, in a front view, and by the stronger crest behind the lip, which is further back than that of pro- cera. Having collected some thousands of the species in many places, and carefully examined a great number, I find none in any way transitional to procera. The variation in size is as great in most lots as in the re- lated species. The largest and the smallest noticed in a lot from Tempe measure, length 3.2, diam. 1.3 mm., and length 2.3, diam. 1.1 mm. (pi. 13, fig. 6). The callous below the columellar lamella varies from rather low to a distinct tooth, but it is rarely so well developed as in most specimens of B. p. mcclungi. The projection on the columellar side of the pari- etal lamella also varies slightly, but it is never so strong as in well-developed duplicata. G. cristata may be found in the debris of the Rio Grande almost anywhere, being brought in by tributary washes from the hills. Whether it actually inhabits the country as far down as Laredo and Hidalgo seems doubtful. It occurs also in the Mississippi River drainage in Oklahoma, and in the Colorado River drainage as far west as Yavapai Co., Arizona. 20. GASTROCOPTA RIOGRANDENSIS Sterki, n. sp. PL 12, figs. 9,10. The shell is shortly rimate; slowly tapering, less cylindric than G. procera, cinnamon or sayal-brown, paler towards the summit, weakly, irregularly striate, composed of 5% strongly convex whorls, the last one impressed over the lower palatal plica, and having a narrow, rather strong crest parallel to the lip a short distance behind it (fig. 9). The aperture has 70 GASTROCOPTA, NORTH AMERICA, WEST INDIES. 6 teeth. The angulo-parietal is distinctly bifid in a front view, slightly sinuous, but not forked in front; the infra- parietal is a small tubercle, often very small, and wanting in many individuals (which are perhaps not completely adult). Columellar lamella is strong, transverse, a low callous (or a low tooth) below it. Upper palatal plica short, the lower long and entering deeply, but not quite so deeply immersed as a whole, as in G. procera. Basal plica shorter, entering. The peristome is expanded, thin at the edge, but having a thin callous rim within. Length 2.55, diam. 1.15 mm. Distribution. — Texas : lower Rio Grande valley, in river debris at Hidalgo (J. A. Singley) and Brownsville. Mexico: Panuco River valley, at Tampico, Tamaulipas; falls below Valles and canyon below Las Canoas, San Luis Potosi (A. A. Hinkley). Pupa STERKI, Nautilus, iv, 1891, p. 142. — P. rio- grandensis STERKI, Nautilus, vi, 1892, p. 4 (Hidalgo, Texas; no description) . — B [ifidaria] riograndensis Sterki, PILSBRY and VANATTA, Proc. A. N. S. Phila., 1900, p. 596. This species tapers a little more than G. procera, the whorls are more convex, and the lip-callous is thin, not nearly so heavy as in procera and its subspecies. The infraparietal tubercle is lacking in so great a proportion of the specimens which are otherwise adult that it cannot be depended upon for identifying the species. It stands very close to G. servilis Gld., but differs by having a strong, narrow crest behind the outer lip, while in servilis a crest is completely wanting. Also, when typically developed, the lip is a little thickened in riograndensis, and an infra- parietal tooth may be present. The crest behind the lip dis- tinguishes riograndensis from the Ecuadorian G. wolfiii, which is otherwise very similar. The figured type is no. 60137 A. N. S. P., from Hidalgo, Texas. 21. GASTROCOPTA SERVILIS (Gould). PI. 14, figs. 4, 5, 6, 7. ' ' Shell elongated ; tapering to a somewhat acute apex, of a GASTROCOPTA, NORTH AMERICA, WEST INDIES. 71 pale chestnut or horn-color; whorls five and sometimes some- what more, very delicately wrinkled; suture well denned. Aperture semi-oval, nearly in the axis of the shell, the trans- verse portion slightly oblique, and the two extremities of the lip very nearly meeting behind. Revolving under the middle of the transverse lip is a contorted, lamellar tooth which arises near the junction of the outer lip ; on the middle of the colu- mella is a large conical tooth; at the base is a small tooth, then a third large tooth, placed so as to form a regular tripod with the other two, and above this is a fifth inconspicuous tooth. Lip slightly everted, not flattened, sometimes a little inflected at the right; umbilicus small. Length one-tenth, breadth one-twentieth inch" (Gould). [Length 2.5, breadth 1.25 mm.] Bermuda (Verrill, Vanatta, and others). Bahamas: near Ft. Charlotte, Nassau, N. P. (Owen Bryant in U. S. Nat. Mus. ) . Cuba: near Matanzas (type loc. ; Bartlett; Pilsbry) ; Santa Cruz (Dr. Griffiths) ; El Vedado, near Havana (Pilsbry) ; Vinales; Cabanas, at the Light; Sumidero (Henderson); Yateras (Wright, in Henderson coll.). Haiti: Charmettes (Henderson and Simpson); Yuma (H. Prime, in Henderson coll.). Jamaica: near Port Antonio and Hope River (Henderson and Simpson) ; Montego Bay and Mandeville (A. P. Brown) ; Castle Daly (Clapp). Porto Rico: San Juan; also Vieques (T. Bland). St. Thomas and St. John (Bland). St. Croix (R. Swift; Griffith). Antigua (W. R. Forrest). St. Bartholomew (Dr. Cleve). Guadeloupe (E. Marie). Barbados (L. P. Brown). Mexico: Vera Cruz (Orcutt and H. Strebel, in U. S. N. M. ; Crawford, in A. N. S. P.). Yautepec, Moreles; Merida, Yuca- tan (Heilprin exped.) ; Carmen Island (Morelet). Bluefields, Nicaragua (W. H. Fluck). Panama (Paz). Pupa servilis GOULD, Boston Journal of Natural History, iv, 1843, p. 356, pi. 16, f. 14.— Pupa pellucida Pfr., STREBEL, Beitrag Mexikanischer Land- und Siisswasser-Conchylien, iv, 72 GASTROCOPTA, NORTH AMERICA, WEST INDIES. p. 91, pi. 4, f . 19 ; pi. 15, f . 10.— VON MARTENS, Biologia Cen- trali- Americana, p. 328, in part; and of many other authors. — Vertigo pellucidus Pfr., ARANGO, Fauna Malacologica Cu- bana, p. 103, in part. — ? Pupa bermudensis PRIME, The Ber- muda Almanac for 1852. — JONES, The Naturalist in Bermuda, 1859, p. 107 (name only). "At first sight this species would be referred either to P. rupicola or P. procera. But a closer examination shows that while it has the pale brown lip of the latter, it is a shorter and much more ventricose shell; and while the number and arrangement of the teeth are as in rupicola, the latter has a much more slender form, the aperture is more oblique and less elongated, the apex is obtuse, and the lip is white" (Gould). This species differs from G. procera and G. rupicola by the absence of an internal thickening of the lip, which is well expanded but thin. There is no external crest. The columel- lar lamella is simple, without a callous or tubercle below it. The angulo-parietal lamella is not forked in front, but there is a very low and inconspicuous projection on the columellar side, marking the anterior end of the parietal portion. One of the commonest Antillean species. It was well de- scribed by Gould, but subsequently was for a long time merged into the group of forms known collectively as Pupa pellucida. Dr. Pfeiffer seems to have initiated this lumping, in which he was followed by Binney and many other authors. It is cer- tainly related to pellucida, but differs by being constantly larger and generally of darker color. The shortest individuals of procera are broader than the largest G. pellucida. G. rupi- cola and its subspecies differ by the thick lip and spurred angulo-parietal lamella, but immature shells are much alike. The typical form of servilis has a tapering shell of about 51/2 whorls, the summit very obtuse. There is no crest behind the outer lip, but the whorl is flattened over the lower palatal plica. The peristome is thin and brown, its margins rather remote. The angulo-parietal lamella shows a small lobe on the right side, in front view, caused by the slight outward flare of the inner end of the angular. The front end of the GASTROCOPTA, NORTH AMERICA, WEST INDIES. 73 parietal is typically not distinct (but in some forms there is a very small projection on the columellar side). Columellar lamella enters horizontally and is without accessory denticles or callous deposit within. The basal and upper palatal plica? are small tubercles, but the lower palatal is somewhat length- ened and a little more deeply placed. The shell drawn in figs. 5 and 6 measures, length 2.45, diam. nearly 1.1 mm. Like some other Gastrocoptas, there is a rather wide range of individual variation in size. An extremely short, conic form from Somerset, Bermuda, is drawn in pi. 14, fig. 7; length 2, diam. 1.1 mm. I have seen several examples, but as they were picked out of normal lots, it is not likely that they represent a race. The specimens from Porto Rico, St. Thomas (pi. 14, fig. 4), Guadeloupe and some others have the inner end of the angu- lar lamella more prominent, forming a distinct spur in a front view. Part of the Mexican shells are similar. To the localities given above for this species, all verified by myself, Guatemala might perhaps be added, as Professor von Martens gave several places in that country for "P. pellu- cida, ' ' with which he unites servUis. Pupa desiderata "Weinland. PL 14, fig. 10. Shell broadly and deeply rimate, ovate-cylindric, corneous, thin, slightly obliquely striate under a strong lens ; spire moderately taper- ing, the apex obtuse ; suture rather impressed ; whorls 5, con- vex, the last shorter than the spire; aperture subvertical, truncate-ovate, obstructed by a long parietal and another smaller and more deeply placed palatal tooth, opposite to the parietal; peristome corneous, thickened, expanded through- out, the right margin somewhat sinuous, right and basal mar- gins a very little reflected. Length 2*4, diam. above the middle 1 mm. Gonave Island, off Haiti, under stones (Dr. Brown), a single specimen in the Bland collection. Pupa desiderata WEINLAND, Jahrbucher der Deutschen Malak. Ges., vii, 1880, p. 377, fig. in text. It may be suspected that Pupa desiderata is either a small bleached B. servUis or a form of B. pellucida. Both of these 74 GASTROCOPTA, NORTH AMERICA, WEST INDIES. species are known to occur in Haiti. It is practically certain that Weinland did not see all of the teeth, only the angulo- parietal and upper palatal being noticed by him. There must certainly be a columellar lamella, and I suspect lower palatal and basal plicae also, though these might be degenerate, as in G. s. riisei. 2la. G. servilis riisei (Pfeiffer). PL 14, figs. 8, 9. The shell differs from G. servilis by the oblong, less conic shape ; the teeth are smaller ; the parietal lamella is lower ; a basal fold is absent, and the upper palatal plica is small or often wanting. Length 2.2, diam. above aperture 1 mm. Otherwise like G. servilis. The series examined comprises 9 specimens from St. Thomas (Henderson collection, from that of Prof. Theo. Gill), and 20 from Water Island, near St. Thomas (Academy coll.,. from Thomas Bland). By the thin lip, color, etc., it seems to be a local derivative of the widespread G. servilis, comparable to G. p. parvidens Sterki, a much smaller shell. By the weak- ness of the upper palatal and basal plicse it resembles the form described as oblonga Pfr., but that is much paler in color, and probably to be looked upon as a parallel modifica- tion of servilis. I presume that this form is Pfeiffer 's riisei, which was de- scribed as follows : Pupa riisei. Shell subrimate, ovate-cylindric, thin, most minutely striate, somewhat glossy, pellucid, pale corneous; spire gradually tapering, the apex obtuse; suture simple; whorls 5, convex, the last one-third the length, rounded at base; columella subplicate; aperture slightly oblique, oval- oblong, toothless ; peristome thin, narrowly expanded through- out. Length 2.5, diam. 1 mm., aperture scarcely 1 mm. long (Pfr.). St. Thomas, type loc., and Porto Rico (Riise). Pupa riisei PFR., Zeitschr. f . Malak., 1852, p. 151 ; Monogr. Hel. Viv., iii, p. 532; iv, 684, as var. of pellucida. — ? Pupa riisei Pfr., KUESTER, Syst. Conch. Cab., p. 178, pi. 21, f . 13, 14. Pfeiffer considered P. riisei a variety of P. pellucida in the GASTROCOPTA, NORTH AMERICA, WEST INDIES. 75 later volumes of the Monographia Heliceomm, defining it thus : ' ' A little larger, with a few teeth, sometimes almost en- tirely obsolete." Kiister described a specimen from Pfeiffer's collection as having five teeth, in the typical Gastrocopta positions. His figure shows teeth as large as in G. serviUs, and probably what he had was that species. It may be sur- mised that Pfeiffer had the form deficient in teeth mixed with servUis; or, indeed, his- original description might have been from an immature specimen of either. 22. GASTROCOPTA PELLUCIDA (Pfeiffer). PL 15, figs. 1-3, 5. "The shell is small, cylindric, subperf orate, pellucid, glossy, pale yellowish, most minutely striate, the apex rather obtuse ; whorls 5%, a little convex ; aperture oblong, toothed ; two large teeth on the columella, 3 or 4 very minute teeth in the circuit, not reaching to the edge ; peristome simple, a little reflected. Length %, diam. % of a line [=1.66:0.83 mm.]. Cuba" (P/r., 1841). * * The shell is subperf orate, cylindric, thin, pellucid, glossy, pale yellowish ; spire gradually tapering, apex obtuse ; whorls 5, convex, the last one flatter than the preceding; aperture semi-oval, fivfe-toothed: single strong teeth on the parietal wall and the columella, two of moderate size in the right margin, and a fifth small one in the base of the palate ; peri- stome simple, the right margin expanded, columellar margin reflected. Length 2, diam. scarcely 1 mm. ; aperture scarcely % mm. long. Sometimes there is a fourth palatal denticle" (Pfr., 1848). West Indies: Bahamas, Cuba, Jamaica, Haiti, Porto Rico, Vieques, and eastern Mexico; varieties hordecella and parvi- dens in the southern United States. Pupa pellucida PFR., Symbolse ad Hist. Hel., i, 1841, p. 46 ; Monographia Hel. Viv., ii, 1848, p. 360 ; vi, p. 331.— KUESTER, Syst. Conchyl. Cab., p. 89, pi. 12, f. 24, 25, 25*.— VON MAR- TENS, Biologia Centrali- Americana, p. 328 (in part). — Pupa jamaicensis C. B. ADAMS, Contributions to Conchology, no. 3, p. 37.— GLOYNE, Journ. de Conchyl., 1875, p. 121.— PFEIF- FER, Mon. Hel. Viv., iii, p. 558.— KUESTER, Syst. Conchyl. 76 GASTROCOPTA, NORTH AMERICA, WEST INDIES. Cab., p. 138, pi. 17, figs. 27, 28. — Vertigo pellucidus Pfr., ARANGO, Fauna Malac. Cubana, p. 103 (in part). — Pupa hor- deacella PILSBRY, Proc. A. N. S. Phila., 1890, p. 44, pi. 1, f. g, h, i, j, k. — Bifidaria hordeacella PILS. & VAN., Proc. A. N. S. Phila., 1900, p. 594, pi. 22, f. 3.— VANATTA, Nautilus, xxvi, 1912, p. 17, pi. 2, f. 1-27 (variation).— WALKER, Occ. Papers Mus. Zool. Univ. Mich., no. 15, 1915, pp. 2-11 (distribution). G. pellucida is cylindric-oblong, diameter almost equal at the last two whorls, those above tapering convexly to an ob- tuse apex. The color is "corneous" — that is, an imperfectly transparent, very pale grayish-buff, but on red soils the thin cuticle becomes stained, slightly cinnamon in some cases. The striation is well developed. The last whorl is strongly flat- tened over the lower palatal plica, and has no trace of a crest or ridge behind the lip. Peristome expanded, very slightly thickened within, corneous, the terminations remote. The an- gulo-parietal lamella is not very conspicuously bifid in front view. Seen from below (pi. 15, fig. 5) it consists of a straight, grayish angular lamella highest at its junction with the pari- etal, and a thicker, more opaque whitish parietal lamella, the front end of which curves slightly towards the columella, forming a minute projection on that side a little forward of the middle of the whole lamella. The columellar lamella is stout, horizontal, and has a small callous below its inner end, often not visible in a front view. The lower palatal plica is larger than the upper, and is placed a little deeper. Basal fold short but distinct. As in other Bifidarias, there are some- times abnormalities in the palatal region, plicae being doubled, or irregular ones interposed. Length 1.75, diam. 0.8 mm. ; 5 whorls. Length 1.7, diam. 0.75 mm. ; nearly 5 whorls. G. pellucida has been used to cover almost any species of its group, as I gather from the literature and the named specimens in various museums. The original account and Kuester's figures are not very satisfactory. The above de- scription and pi. 15, figs. 1-3, 5, are from typical Cuban specimens. Its recognition marks are the small size (1.5 to 2.2 mm. long), faintly yellowish-corneous tint, rather indis- GASTROCOPTA, NORTH AMERICA, WEST INDIES. 77 tinctly bifid angulo-parietal lamella with a small projection on the columellar side, seen in a basal view, the absence of any crest behind the lip, which while slightly thickened within has no distinct white or brown callous, and the rather short lower palatal plica. It differs from (7. servilis by the smaller size, especially the smaller diameter; this dimension varying within narrower limits than the length. G. barbadensis has the angulo-parietal lamella much more distinctly bifid, in a front view of the aperture; the lower palatal plica is longer and more deeply placed; and when typically developed, the teeth are larger than in pellucida. Typical pellucida is before me from La Guira, S. Diego, El Abra, Vinales, Sierra de S. Vicente (1.7x0.75 mm.), all from the John B. Henderson collection, and from some other Cuban localities. Specimens from Jamaica, Port Henderson (Swift coll.) and Mandeville (A. P. Brown), are entirely typical. In the Bimini group of the Bahamas it occurs at South Bimini Cay (length 2.1 to 2.3 mm.) and north end of South Cat Cay, both collected by Geo. H. Clapp, 1912, the shells vary from typical size to somewhat larger. Variation may be noted as follows : a. Typical in size or larger, the angulo-parietal lamella not showing any projection on the columellar side, or with it scarcely noticeable. Cuba: San Juan de Letran, near Trini- dad, the largest 2.15 x 0.9 mm., and El Vedado, Havana (Pils- bry). Teiieria de Guane ; Costanera del Abra, Pinar del Kio; Cabanas Light, and Laguna de Piedra (Henderson). Haiti: Charmettes and St. Mark (Henderson and Simpson). Vieque. Also Antigua, state of Vera Cruz, Mexico (S. N. Rhoads), the largest one 2.2 mm. long, 0.95 wide. b. Lots from Costanera de S. Vicente, Guane, and Mogote de la Mina, Consolacion del Norte, are more or less interme- diate between the typical form and the variety a. c. One lot from Ponce, Porto Rico (R. Swift) has a small crest behind the lip, and the color is pale brownish. It differs in no way from the continental hordeacella. 78 GASTROCOPTA, NORTH AMERICA, WEST INDIES. 22a. G. pellucida form biminiensis, n. f . PL 15, figs. 11, 12, 13. The shell is dark brown, having a crest or trace of it behind the lip; lip widely reflected and moderately thickened, but not nearly so thick as that of crassilabris. Angulo-parietal lamella nearly straight and not bifid, resembling that of B. pellucida. No buttress under the columellar lamella. Length 2, diam. above aperture .9 mm.; 43/4 whorls (type). Length 2.15, diam. above aperture .9 mm. ; 5 whorls. Bimini Islands: north end of South Cat Cay and South Bimini Cay, type locality (Geo. H. Clapp). In a series from Rosario, Cuba (Henderson), the lip is a little thicker than usual in pellucida, about as in form bimini- ensis. The angulo-parietal lamella is nearly straight and simple in some individuals (pi. 15, fig. 10; length 1.6, diam. 0.75 mm.) ; but in others the angular and parietal lamellae are not in alignment, the tooth in basal view resembling that of crassilabris, pi. 18, fig. 9. The figured shell of this kind measures, length 1.8, diam. 0.8 mm. (pi. 15, fig. 7). The smallest shell in this lot is 1.5 mm. long (fig. 10). 22b. G. pellucida delicata n. subsp. PL 15, figs. 4, 9. The shell is smaller, very thin and fragile, slightly paler than marguerite yellow, without a crest behind the thin lip. The angular lamella is very weak and low, the parietal and columellar lamellae moderately developed. Basal fold want- ing, or very minute when present. Length 1.55, diam. above aperture 0.7 mm. ; 4% whorls. Length 1.36, diam. above aperture 0.65 mm. ; 4 whorls. Distribution. — North end of South Cat Cay, Bimini group, Bahamas (Geo. H. Clapp, May, 1912). Cotypes in collections of Clapp, A. N. S. P., and J. B. Henderson. This very minute and fragile form contrasts with the sub- species biminiensis of the same islands, and both seem well differentiated from pellucida. 22c. G. pellucida hordeacella (Pilsbry). PL 17, figs. 1 to 4; pi. 16. This continental race differs from pellucida by having a GASTROCOPTA, NORTH AMERICA^ WEST INDIES. 79 slight crest behind the outer lip, and a somewhat longer lower palatal plica. There is often no projection on the columellar side of the angulo-parietal lamella. Also by the pale brown color and the average larger size. In the original description a specimen of the minimum size was selected as type, but in the same lot the size is variable, from length 1.8, diam. 0.76 mm., to length 2.5, diam. 1 mm. All of the characters distin- guishing hordeacella from pellucida vary so much that in some individual cases, without a large series, there is little or no difference ; but it is only the smallest individuals of any lot of hordeacella which could be taken for pellucida. The status of the subspecies is rather uncertain, and possibly it might be abandoned with advantage. There are specimens which show no crest, and the color, in the East, is often as pale as pellucida. G. p. hordeacella varies far more than Antillean pellucida. The length varies from 1.5 to 2.6 mm., whorls 4 to 5^, among specimens picked from one lot. Mr. Vanatta remarks (Nautilus, xxvi, p. 17) that in picking them over one has a tendency to divide each lot into several grades, long, medium, small and obese, but these intergrade through a small number of shells of intermediate size. "The long shells from Florida have weak teeth and the short specimens have strong teeth, while in Texas the converse is often the case." There is con- siderable variation in the development of the buttress under the columellar lamella, which is sometimes scarcely noticeable, sometimes so thick as to appear as a subcolumellar tubercle. See pi. 16, figs. 5, 10, 26. Florida and the Keys, Georgia Sea Islands north along the coast to Cape May, New Jersey. Ft. Gibson, Oklahoma, and Texas, west to Trinidad, southeastern Colorado, Jerome and Mt. Trumbull, Arizona. Guajadami, Lower California (Nel- son and Goldman). Victoria (S. N. Rhoads) and Tampico, Tamaulipas (Hinkley) ; near Valles, S. L. Potosi (Hinkley). Type locality, New Braunfels, Texas. On the Atlantic coast, though it extends as far north as Cape May, its extension inland seems to be very narrow, so far as the data show. In the west it is generally diffused, 80 GASTROCOPTA, NORTH AMERICA, WEST INDIES. being found almost anywhere snails live in Texas, New Mex- ico and Arizona, between the 97th and 113th meridians, ex- cept in the higher mountains. About 150 lots are in the col- lection of the Academy. Specimens from a dry cliff in the very arid Big Hachet Mts., N. M., near the Mexican boundary, are all small, length 1.8, diam. 0.72 mm., very pale buff, and without a crest be- hind the lip. The examples from Guajadami, Lower California, are par- affine-whitish, rather long and narrow, fig. 4 measuring, length 2, diam. 0.72 mm. The crest behind the lip is very low but perceptible. This locality is widely separated from the rest of the known occurrence of hordeacella. Mr. Vanatta has published a series of figures, drawn to the same scale with the camera-lucida, to illustrate the very great variation in size and shape in this subspecies. His plate is reproduced in plate 16, the specimens illustrated being from the following localities : Figs. 1, 3, 5-8, 12, 13, 15, 16, 20-22, Key West, Florida. No. 104029. Figs. 9, 10, 14, 17-19, 25, Bahia Honda Key, Fla. No. 105521. Figs. 4, 24, 26, 27, Summerland Key, Fla. No. 102742. Figs. 2, 11, 23, New Braunfels, Texas. No. 68888. Each lot contains specimens from a single station of only a few feet extent, except the New Braunfels lot, which was from stream debris. By its great variability and often larger size, hordeacella contrasts with pellucida. 22d. G. pellucida parvidens Sterki. PL 17, fig. 8. ' ' Quite small ; apex more acute than in typical examples [of hordeacella] and outline more obovoid; peristome rather abruptly but narrowly everted; lamellae and folds small, especially so the upper palatal, often being a mere trace; basal absent or very small; color pale horn. Alt. 1.5 to 2 mm." (Sterki). Size and shape are variable in this race, which differs from hordeacella by the smaller lamellae and plicae, the angular GASTROCOPTA, NORTH AMERICA, WEST INDIES. 81 lamella being short, not reaching to the lip, the columeUar lamella has no buttress below, and the basal fold is generally wanting. Sometimes, as in the specimens from Navajo Springs, both basal and upper palatal folds are wanting. Arizona: Mescal Gulch and drift of Verde River, near Jerome, Yavapai Co. (type loc.) ; Navajo Springs, Apache Co. (Ashmun). Bif. hordeacella Pils. var. parvidens STERKI, Nautilus, xii, March, 1899, p. 128. — Bifidaria hordeacella parvidens Sterki, PILSBRY and VANATTA, Proc. A. N. S. Phila., 1900, p. 594, pi. 22, fig. 2. This race, though not rare around Jerome, seems to have a rather restricted area. I have collected for years in the re- gions north and south without encountering it. It has reached about the same stage of decadence as G. servilis riisei in St. Thomas, and differs from that form by the slightly smaller, especially narrower dimensions, and the noticeably deeper suture. No doubt parvidens is a derivative of hordeacella. The descriptions of P. jamaicensis and P. ovum- formica, which I consider synonyms of pellucida, follow: "Pupa Jamaicensis. Shell cylindrical; pale brownish-horn color; with fine oblique striae of growth; spire tapering only near the summit into an obtuse apex; whorls five, quite con- vex, with a deep suture; aperture semi-oval, with the right side longer, and shouldered above, and the transverse side a little oblique ; to the right of the middle of the latter is a very promient [prominent] stout tooth ; on the middle of the colu- mella is another equally stout, but less prominent; on the right side is another prominent tooth directed between the two above-mentioned, and on each side of it a rather smaller tooth; lip nroderately reflected, with a very small umbilicus. "This species is more exactly cylindrical than P. servilis Gould, P. procera Gould, etc., which have a similar aperture ; the upper and lower teeth of the right side are more conspic- uous, and the shell is much smaller. Length .07 inch ; breadth .025 inch" [= length 1.75, diam. 0.625 mm.]. Jamaica (C. B. Adams). Pupa pellucida was not known to Adams when he described 82 GASTROCOPTA, NORTH AMERICA, WEST INDIES. jamaicensis, which is exactly synonymous with Pfeiffer's Cuban species. Kuester's figure is very poor and incorrect. Pupa ovum formicae (pi. 15, fig. 6). Shell very small, rimate, cylindrical, under a lens delicately obliquely striatu- late, buff-corneous, thin; spire with obtuse apex; suture a little impressed; whorls 5, slightly convex, the last shorter; aperture subquadrangular, with one compressed parietal tooth, a wider one on the columella; peristome thickened, a little expanded throughout. Length 1%, diam. % mm. (Weinland). Haiti : in mould under rocks in the woods at the Habitation Debarras, a few hours from Jeremie (Weinland). Pupa ovum formicae WEINLAND, Jahrbiicher der Deutschen Malak. Ges., vii, 1880, p. 377, fig. in text. — Pupa myrmecoon CROSSE, Journ. de Conchyl., xxix, 1891, p. 152. This and the preceding species [P. desiderata] are, so far as we know, the first small Pup as of the group Pupilla Leach to be made known from Haiti; and the first belongs to the abbreviatae (of von Martens), the second to the cylindricae. All of these [other West Indian] species have either fewer or more than two teeth, and each has besides other characteristic features (Weinland). Notwithstanding the alleged absence of basal and palatal plic89 in ovum formicae, I have very little doubt that it is merely pellucida in which the smaller teeth were present as usual, but were not seen. Such oversight is not unusual in the literature of Pupillidce, incredible as it may appear. Considering ovum formicae objectionable as a name, Crosse substituted myrmecoon; he had not seen the species. 23. GASTROCOPTA LONGURIO (Crosse). PL 15, fig. 8. Shell rimate, elongate, thin, marked with fine oblique striae, inconspicuous and scarcely visible under a lens, sub- . translucent, corneous, shading into dirty white. Spire lengthened, terminating in an obtuse summit. Suture not strongly marked. Whorls 5, a little convex, the last shorter than the spire. Aperture nearly round. Peristome subcir- cular, almost continuous, shortly expanded and dirty white; GASTROCOPTA, NORTH AMERICA, WEST INDIES. 83 margins joined by a quite thick callous; parietal and colu- mellar margins each having one lamelliform, deeply placed and conspicuous tooth ; basal margin indistinctly two-toothed, both in the depth of the aperture ; outer margin sometimes provided with a tooth below the point of insertion, but this is not constant. Length 21/4, diam. % mm. (Crosse). Curasao (H. Raven). Pupa longurio CROSSE, Journal de Conchyl., xx, 1872, p. 158 ; xxi, 1873, p. 42, pi. 1, f . 2. This species is evidently related very closely to G. pellu- cida, having teeth in the typical positions, but it differs by the narrower contour. I have not seen specimens. The name longurio has been used by Moquin-Tandon for a variety of an European species, but until specimens from Curasao can be critically compared with pellucida, the desirability of a new name need not trouble us. 24. GASTROCOPTA BARBADENSIS (Pfeiffer). PL 18, figs. 1 to 5. The shell is subperforate, ovate-oblong, thin, nearly smooth, pellucid, transparent-buff. Spire a little convex, gradually tapering, the apex rather obtuse. Whorls 5%, rounded, the last scarcely one-third the total length. Aperture oblique, lunate-rotund; parietal wall bearing a strong fold at the angle; columella deeply dentate-plicate. Peristome simple, a little expanded, the basal margin armed within with one tooth. Length 2%, diam. % mm. (Pfr.). Cuba: Vinales; Sierra de S. Vicente; Cayo Piedra; Vara- dero Park, near Cardenas (Henderson). Water Island, near St. Thomas (R. Swift). Guadeloupe. Barbados (type loc.; L. B. Brown). Also, Trinidad (Guppy, for P. uvulifera), and Fernando Noronha (for P. solitaria) ; a variety in Baha- mas and Bermuda. Pupa barbadensis PFR., Monographia Hel. Viv., iii, 1853, p. 554; iv, 679; Proc. Zool. Soc. Lond., 1852, p. 69 (1854).— KUESTER, Syst. Conchyl. Cab., p. 175, pi. 21, f. 8, 9. Includes P. uvulifera and P. auriformis Guppy, P. indi- gena Ancey and P. solitaria Smith. 84 GASTROCOPTA, NORTH AMERICA, WEST INDIES. In his description in the P. Z. S., Pfeiffer gave the length as 2% mm., evidently an error. Kuester, who described and figured a specimen from Pfeiffer 's collection, noted and fig- ured the palatal plicae, which Pfeiffer omitted to mention; also the nodules above and below the columellar lamella. This specimen may be considered the type. The shell averages a little larger than G. pellucida, and when fresh is of a light brown color. The angulo-parietal lamella is more sinuous than in either pellucida or serviLis. In front view it appears strongly bifid. In a specimen in which the base has been broken away (pi. 18, fig. 3) the pari- etal lamella is seen to be thick, terminating forward in a low projection towards the columella. The angular lamella is thinner, and where it joins the parietal is strongly bent towards the periphery, forming a small lobe. The columellar lamella is stout and horizontal, with a callous below its inner end. This callous may be quite low, not visible in a front view, or it may be strongly developed, appearing as a sub- columellar nodule. Among specimens evidently mature one finds such variation in the same lot, but in some lots the nodule does not seem to be developed. A similar callous, rarely nodular (as in pi. 18, fig. 1, and in Kuester 's figure), is on the axis above the columellar lamella, but this supra- columellar nodule is often very weakly developed. The form with well-developed supra- and infra-columellar nodules may be considered typical barbadensis, since this is what Kuester figured from Pfeiffer 's collection. The lower palatal plica is larger than the others, and enters more deeply. The basal fold is often quite small. The peristome is pale brown, and from very slightly thickened to distinctly so, yet not so thick as in G. rupicola. There is sometimes a very low indication of a crest behind the lip, but more often none. The shape varies somewhat — from oblong to oblong-conic, the summit always very obtuse. In color it is wood-brown, fading to cor- neous at the apex. Dead shells bleach under the tropical sun to grayish-buff or almost "corneous," preserving a fresh ap- pearance. Measurements of Barbados shells follow : Length 2.05, diam. above aperture 0.85 mm. GASTROCOPTA, NORTH AMERICA, WEST INDIES. 85 Length 2.1, diam. above aperture 0.9 mm. Length 2.4, diam. above aperture 0.95 mm. Length 2.45, diam. above aperture 1.1 mm. The specimens from the Cuban localities Cayo Piedra and Sierra de S. Vicente have rather weak teeth for this species, but in those from Varadero Park the teeth are as large as usual, the angulo-parietal variable in degree of concrescence. They are also small, length 1.63 to 1.7, diam. 0.75 mm. (pi. 18, figs. 10, 12). 24&. G. barbadensis crassilabris n. subsp. PL 18, figs. 6 to 9. The shell is cylindric, the upper third tapering to a very obtuse apex, very pale brown, fading to corneous above. "Whorls strongly convex, the last flattened, tapering down- ward in its last third, having a low crest behind the outer lip. Angulo-parietal lamella emarginate or bifid in front view, the front end of the parietal projecting a little towards the colu- mella. Columellar lamella, basal and palatal plicae well de- veloped. Peristome expanding and strongly thickened within, pale brown. Length 2, diam. above aperture 0.9 mm. ; 4% whorls (type). Length 2.2, diam. above aperture 0.9 mm.; 5 whorls (largest). Length 1.8, diam. above aperture 0.8 mm. (smallest). Bahamas: near Fort Charlotte, Nassau, N. P., and Man- grove Cay, Andros Island (0. Bryant) ; type and paratypes from the latter locality, no. 180645 U. S. N. M. Also Ber- muda: Somerset (Vanatta) and Paynter's Vale (Peniston). The cylindric shape and small diameter distinguish this from the thick-lipped marginalba and rupicola, both of which are known to me by great numbers of specimens, from numer- ous localities. In shape and size, crassilabris resembles pellu- cida, but the thick lip and the teeth are more like margwalba, the peristome being thicker and the crest stronger than in barbadensis. There is a marked resemblance between crassi- labris and G. mcclungi. There is an albino shell in the type lot. The Bermuda form, from Somerset (Vanatta; pi. 18, fig. 86 GASTROCOPTA, NORTH AMERICA, WEST INDIES. 6) and Paynter's Vale (Miss Peniston) is brown, solid, with a crest behind the lip rather well developed in most examples ; teeth well developed, but without nodules above or below the columellar lamella. Parietal lamella is more conspicuously bifid in front view than in the Andros examples, quite as in barbadensis, from which it differs by the very thick lip. Length 2.15, diam. 1.05 mm. Those from near Fort Charlotte are somewhat larger, up to 2.4 mm. long, 0.95 wide. The angulo-parietal lamella is either emarginate or more strongly bifid. No differential specific characters have yet been assigned for the following forms, which may be provisionally consid- ered synonyms of barbadensis. As further examination of good series may possibly show that there has been racial dif- ferentiation, their descriptions and synonymy are given sep- arately. Pupa indigene Ancey. Shell small, oval, rimate, corneous- brown. Spire with obtuse apex; whorls 5%, regularly and moderately increasing, all convex, the last whorl rotund, very lightly compressed at the aperture. Aperture rotund-oval, with 5 teeth: one, the largest, superior, at the right margin, lamelliform and entering; two within the right margin; one below; and the other large one on the columella. Peristome expanded, reflexed, not covering the umbilicus, margins joined by a thin callous. Length 2!/4, diam. 114 nun. (Ancey). Guadeloupe (Ancey; Schramm, Maze and others). Pupa indigena ANCEY, Le Naturaliste, i, March, 1881, p. 373. — MAZE, Journal de Conchyliologie, xxxi, 1883, pp. 21, 43. Maze has given numerous localities on Guadeloupe and its immediate dependencies, where it seems to be a common species on calcareous terranes, living "in the crevices of old walls and in the sand under dry stones on a clay soil. ' ' Specimens collected by Schramm are in the collection of the Academy, figured on pi. 18, figs. 4, 5. Two measure : Length 2.2, diam. above aperture 0.92 mm. Length 1.9, diam. above aperture 0.89 mm. The lower palatal plica is slightly longer than in Barbados GASTROCOPTA, NORTH AMERICA, WEST INDIES. 87 G. barbadensis, the columellar lamella is but slightly or not at all buttressed below, and there is no subcolumellar tubercle, though there may be a low callous (fig. 4). The lip is rather thick. It does not seem specifically separable from G. barba- densis, but perhaps is distinguishable as a subspecies or local race. According to Ancey, the specimens formerly reported as Pupa eyriesii Drouet from the French Caribbees are refer- able to indigena. Pupa uvulifera. PI. 18, fig. 11. Shell umbilicate, cylindric, a little ovate, lightly striatulate, corneous-brown, little shin- ing ; whorls 5 to 6, convex ; aperture semiovate, provided with folds, parietal fold vertical, lamelliform; outer margin thick- ened, reflexed, columellar margin broadly reflexed ; umbilicus open, not very deep. Length 3, diam. 1 mm. (Guppy}. Trinidad (Guppy). Pupa uvulifera GUPPY, Ann. and Mag. of Nat. Hist. (4 ser.), i, June, 1868, p. 411, no. 9; Proc. Sci. Asso. Trinidad, 1869, p. 243 (copied in PPR., Monographia, viii, p. 373) ; Journ. of Conch., vii, p. 219. — E. A. SMITH, Journ. of Conch., viii, 1896, p. 244, pi. 8, f. 10. I have not seen this form, which has not been defined ade- quately. Guppy 's measurement is clearly wrong, "length 3 millim." probably being a slip for length 2 mm. Mr. Smith's size-mark is 2.3 mm. long, and the diameter of his figure is nearly half the length, a normal proportion for the group. It is not clear how the Trinidad species differs from G. barba- densis (Pfr.), and until differential characters are indicated it may be placed provisionally in the synonymy of that species. Mr. Smith, whose figure is copied on my plate, remarks: " Specimens of this species, presented to the British Museum by Mr. Guppy, exhibit five unequal teeth, viz. : a double pari- etal tooth larger than any of the other teeth, a single colu- mellar tooth, and three palatal teeth, of which the uppermost on the right nearest to the parietal is very small and difficult of observation. P. pellucida Pfr. is very closely allied to this species. ' ' 88 GASTROCOPTA, NORTH AMERICA, WEST INDIES. In his Trinidad list of 1893 Mr. Guppy remarked : "I think it possible that the shell I described as Pupa auriformis, and of which I never found more than a single specimen, may be a variety or accidental form of this" [P. uvulifera]. The original description follows: Pupa auriformis. Shell subperforate, ovate, brown, some- what pellucid, lightly striate, scarcely shining; whorls 4^/2 to 5, convex, the last more than half the total length; spire short, convex, apex obtuse; aperture semioval, auriform, pro- vided with a parietal fold ; peristome thickened, reflexed, the outer margin strongly sinuated, columellar margin widely reflexed. Length 2, diam. 11/2 mm. Distinguished from the last [P. uvulifera] by its shorter and more ovate figure. Trinidad (Guppy). Pupa auriformis GUPPY, Ann. and Mag. Nat. Hist. (4 ser.), i, June, 1868, p. 441, no. 10; Journ. of Conch., vii, p. 219. 24&. G. barbadensis solitaria (E. A. Smith). PL 17, figs. 11, 12. Shell minute, rimate, whitish, ovate-cylindroid ; whorls 5, convex, sculptured with delicate growth-lines, separated by a slightly oblique suture, the last whorl somewhat varicose be- hind the lip. Aperture small, five-toothed; a strong, double columellar tooth, a smaller one, also bifid, on the parietal wall, two small ones remote from the right margin, and a fifth minute basal tooth. Peristome narrowly expanded, white, the margins joined by a thin callous. Length 2%, diam. l1/^ mm. (Smith). Distribution. — Platform Island, Fernando Noronha (Rid- ley). Pupa solitaria E. A. SMITH, Journal of the Linnean Soci- ety, Zoology, xx, 1890, p. 501, pi. 30, f. 10, lOa. This species is a trifle less cylindrical than P. pellucida Pfr., a Cuban species; but it has the number of teeth and their arrangement similar. The columellar tooth, however, is double, the upper portion of it being most prominent; the tooth above it, upon the body-whorl, is single, bifurcating at the end. The three remaining teeth are rather remote from GASTROCOPTA, SOUTH AMERICA. 89 the margin of the aperture. The anterior part of the last whorl, just behind and parallel to the labrum, exhibits a longitudinal swelling or varix, towards which the lip ex- pands" (Smith). I have not seen Pupa solitaria, which on account of its re- mote locality, may prove to have some special characters. The figure shows a more ovate contour than B. barbadensis, but with no other differences from that shell. I strongly sus- pect that, like the three species of Opeas on the same island, a comparison of specimens will show that it is not separable from the Antillean species. Both Opeas and Gastrocopta might easily be introduced. Provisionally it may be ranked as a subspecies. 25. GASTROCOPTA POLYPTYX n. sp. PI. 17, figs. 5, 6, 7. The parietal and angular lamellae are more separated than in barbadensis. There is a distinct infraparietal nodule. The horizontal columellar lamella turns upward at its inner end, and there is a well-developed subcolumellar nodule. The upper palatal plica is rather large and runs obliquely down- wards; lower palatal long and deeply placed. Basal fold thicker than in barbadensis, and prominent. The color is from corneous to pale brown. Length 1.8, diam. above aperture 0.8 mm. Length 1.7, diam. above aperture 0.75 mm. Distribution. — St. Thomas (type loc.) ; Jamaica (A. D. Brown coll.) ; Bermuda (Swift coll., from C. B. Adams). This appears to be a species of the barbadensis stock in which the apertural lamellae are very strongly developed and the average size smaller. The specimens seen from Jamaica and Bermuda are not from original collectors, and the species has not turned up in the very large amount of material col- lected in these islands in recent years. II. SOUTH AMERICAN SPECIES OF GASTROCOPTA. Few Pupillida are known from South America, most of them belonging to Gastrocopta. The two subgenera repre- sented occur also in North America, and the species are closely 90 GASTROCOPTA, SOUTH AMERICA. related to Antillean and continental North American forms. Some species (oblonga, miliola, clessini) are deficient in teeth, like the northern parvidens and riisei. For other South- American Pupae, see the genera GMulina, Bothriopupa, Sterkia and Pupoides. Pupa plusiodonta ap- pears from the description to be an Abida (Torquttla), and I venture to suggest that the single specimen is really a Euro- pean shell, which got among Argentine shells by accident. No useful key to species can be constructed, as several species are quite imperfectly known. They may be arranged as follows: I. Angular and parietal lamellae united into a single sin- uous lamella, sometimes bifid at the tip (subgenus Gas- trocopta, restricted). 24&. G. barbadensis solitaria (Smith). Fernando No- ronha, p. 88. 26. G. servilis oblonga (Pfr.). Amazon River to Ar- gentina. 27. G. miliola (Orb.). Rio Janeiro, eastern Bolivia. 28. G. microdonta (Doering). Argentina. 29. G. clessini (Doering). Argentina. 30. G. nodosaria (Orb.). Eastern Bolivia. 31. G. wolfi (Miller). Western Ecuador. 32. G. munita (Reibisch). Galapagos. 33. G. clausa (Eeibisch). Galapagos. II. Angular and parietal lamellas diverging forward, becom- ing separate in front (subgenus Immersidens) . 34. G. dicrodonta (Doering). Argentina. 35. G. iheringi (Suter). Southern Brazil. 36. G. pazi (Hidalgo). Peruvian Andes (? Ecuador, ? Panama). III. Characters uncertain. 37. Pupa curia Anton. Chili. 26. GASTROCOPTA SERVILIS OBLONGA (Pfeiffer). PI. 17, figs. 9, 14, 15. The shell is subperforate, oblong, thin, nearly smooth, little shining, pellucid, corneous-buff, gradually tapering upwards, GASTROCOPTA, SOUTH AMERICA. 91 the apex rather obtuse. Whorls 5i/2, convex, the last scarcely one-third the length, rounded basally. Columella obsoletely folded. Aperture oblique, truncate-oval; parietal wall hav- ing one tooth-like fold; peristome thin, the right margin strongly curved above, a little expanding; columellar some- what dilated, spreading. Length 2%, diam. iy3 mm. (P/r., 1853). Aperture in perfect specimens five-toothed : one compressed parietal, one columellar, three palatals, of which the middle one is distinct, the others obsolete (P/r., 1859). Habitat unknown (Mus. Cuming and Pfeiffer). ? Bahia, Brazil. Uruguay: Santa Lucia near Montevideo (Paz, in Hidalgo). Argentina: a barranca on the bank of the Parana, near Rosario; Sierra de Poeho at Cerro Salado; and Sierra S. Luis, Valle de Cautana (Doering). Pupa oblonga PFR., Monographia Hel. Viv., iii, 1853, p. 536 ; iv, 685 ; vi, 332 ; viii, 403 ; Proc. Zool. Soc. Lond., 1852, p. 69 (1854).— KUESTER, Syst. Conchyl. Cab., p. 173, pi. 21, f. 1, 2. — HIDALGO, Viaje al Pacifico, Moluscos, p. 141. — DOERING, Boletin Acad. Nac. Ciencias de la Rep. Argentina, iii, 1879, p. 81. The figure of Kuester copied in pi. 17, fig. 9, does not show the upper and lower lip-teeth, which Hidalgo remarks are noticeable in adult examples. Doering copied Hidalgo's description, adding the remarks that it differs from P. microdonta by the larger and somewhat cylindric shape, and that it seems to be rather widely spread in Argentine territory. I have seen numerous specimens from eastern Brazil : Para (Dr. Hubbard, A. N. S.; J. B. Steere, U. S. N. M.; and others) ; coast of Ceara (Fred Baker, A. N. S. P.) ; Fortaleza, Ceara (von Ihering, in U. S. N. M.) ; Brazil (labeled P. ob- longa, apparently in the hand of Paz, U. S. N. M.). They vary from light brown to a faintly brownish corneous, and differ from typical G. servilis by often (but not always) hav- ing the basal fold very small or even wanting, as well as by the usually paler color and the slightly fuller outlines of the spire. Two examples measure : 92 GASTROCOPTA, SOUTH AMERICA. Length 2.35, diam. above aperture 1.15 mm. (fig. 14, Forta- leza) . Length. 2.1, diam. above aperture 1.1 mm. (fig. 15, Para). It does not seem to me specifically distinct from G. servilis. By the weakness of the teeth it resembles G. s. riisei, which was evidently derived from servilis. 27. GASTROCOPTA MILIOLA (Orbigny). Shell oblong, short, perceptibly umbilicate, quite thick, smooth; spire short, swollen, with the summit very obtuse as though truncate, composed of 5 swollen whorls separated by a deep suture. Aperture rounded, provided with three teeth, one on the parietal wall, the two others smaller, on the left margin. Color whitish or fawn. Length 2, width 1 mm. Brazil: environs of Rio de Janeiro, under dead leaves. Bolivia: province of Santa Cruz de la Sierra, in the last mountains. HeUx miliola ORB., Mag. de Zool., 1835, p. 17. — Pupa mili- ola ORB., Voyage dans 1'Amer. Merid., p. 323. — DOERING, Boletin Acad. Nac. Ciencias de la Rep. Argentina, iii, 1879, p. 84. According to Orbigny, this species is shorter than paredesii and nodosaria, with nearly the same form. It has not been figured. Doering has identified a species from the Sierra de Cor- doba, in shady, humid places in the valleys of the Rio Pri- mero, Rio Ceballos, etc., with Orbigny 's species. He describes it as having parietal and columellar lamellae and a deeply- placed lower palatal fold. Rio Janeiro may be selected as the type locality. Until specimens from there can be examined, the characters of the species will remain uncertain. 28. GASTROCOPTA MICRODONTA (Doering). "Shell ovate-conic, thin, somewhat glossy, nearly smooth, brownish-corneous. Spire conic-ovate, apex tapering, very obtuse. Whorls 5^, a little convex, the last about one-third the length. Aperture semioval, five-toothed: one compressed, GASTROCOPTA, SOUTH AMERICA. 93 lengthened, obliquely truncate fold on the parietal wall ; one on the columella ; a third small basal one ; fourth tooth dis- tinct, in the middle of the right margin; the fifth smallest, obsolete, in the upper margin. Peristome thin, narrowly ex- panding throughout, the right strongly curved above, colu- mellar margin somewhat dilated. Length 2, diam. 1 to 1.2 mm. "Differs from P. oblonga by the shorter, ovate shell, with the whorls but little convex, the parietal tooth protracted and truncate, etc." (Doering). Argentina : Province of Entre-Rios, around La Paz, and in Corrientes, in the woods along the Rio Guayquirazo, living under decaying tree trunks; also Bajo de Velis, in the Sierra de San Luis (Doering). P.[upa] microdonta DOERING, Apuntes sobre la fauna de moluscos de la Republica Argentina, pt. 4, .in Bole tin de la Academia Nacional de Ciencias de la Rep. Argentina, iii, 1879, p. 82.— Nachrichtsblatt d. deutschen Malak. Ges., 1880, p. 84. In the Nachrichtsblatt for 1880 it was said to be identical with Pupa pazi Hidalgo, probably on Doering 's authority. The description indicates rather a species similar to G. ser- vilis, but of smaller size, close to G. pellucida. 29. GASTROCOPTA CLESSINI (Doering). "Shell subperf orate, minute, oblong, cylindrically conic, thin, delicately striatulate, a little shining, buff-corneous. Spire long, slender, conic-cylindric, the apex rather obtuse. Whorls 5 to 6, very convex, gradually increasing, the first hyaline-corneous, smooth, the rest buff-corneous. Suture deep, wide. Aperture truncate, semioval, three-toothed: one compressed, pliciform tooth in the parietal wall; the second tongue-shaped, on the columella ; the third deep in the palatal wall. Peristome white, thin, expanded throughout, a little reflected. Length 2 to 2.2, width 0.8 to 0.9 mm.; aperture 0.7 mm. long, 0.6 wide" (Doering). Argentina: abundant in suitable places in the Sierra de Cordoba, as, for example, the valley of the Rio Primero, Rio 94 GASTROCOPTA, SOUTH AMERICA. Ceballos, Quebrada de Musi, etc.; also Bajo de Veils, in the Sierra de S. Luis (Doering). P. [upa] dessini DOERING, Apuntes, etc., in Boletin de la Academia Nacional de Ciencias de la Rep. Argentina, iii, 1879, p. 83. "It is very easy to distinguish this little species from the others by its delicacy, the cylindrically conic shape, the pro- nounced convexity of the whorls, and by the depth of the suture. The striae of growth are usually quite conspicuous." It seems from the above account to resemble G. nodosaria. 30. GASTROCOPTA NODOSARIA (Orbigny). PL 17, fig. 10. The shell is pupoid, oblong, noticeably umbilicate, thin, smooth; spire cylindric with truncate summit, composed of six swollen whorls separated by a deep suture. Aperture oval, provided with a large, as though bidentate, lamella on the parietal wall. Margins noticeably reflected. Color uni- form grayish-fawn. Length 2, width % mm. (Orb.). Bolivia: at a place called Pampa Ruis, Province of La Laguna, in the last foothills of the eastern slope of the Andes ; under stones and moss (Orbigny). Helix nodosaria ORB., Mag. de Zool., 1835, p. 22. — Pupa nodosaria ORB., Voy. dans 1'Amerique Meridionale, p. 322, pi. 41 bis, f. 12-14. Orbigny adds that this Pupa has the shape of the preced- ing [P. paredesii], but it differs by the smaller size, the ab- sense of raised riblets, and by having a lamella in the aper- ture. It is rare, and difficult to collect on account of its ex- treme thinness. It may be conjectured that this is a member of the G. pel- lucida and barbadensis group, really having more teeth than it has been credited with. 31. GASTROCOPTA WOLFII (Miller). PL 28, figs. 1, 2, 3, 4. The shell is subperforate, cylindric-ovate, thin, very deli- cately obliquely striate or costulate, brownish, the apex rather obtuse ; whorls 5, convex, separated by a deep suture, the last about one-third the length. Aperture suboblique, truncate- GASTROCOPTA, SOUTH AMERICA. 95 ^oval, four- or five-toothed : first or strongest tooth is a twisted, bifid, vertical lamina which is arched to the right, and more deeply to the left, on the parietal wall; the second tooth is strong, on the columella; two teeth (the third and fourth) are deep in the right margin (the upper one small, the other in the middle, oblique, long and laminiform) ; the fifth tooth is deeply placed, small and sometimes wanting, placed in the base. Peristome simple, the right margin lightly impressed, almost horizontal above, basal and columellar broadly expand- ing, the margins joined by a callous. Length 2 to 2%, diam. 114, aperture 0.8 mm. long, 0.7 wide (Miller). Ecuador : Guayaquil, in shady places, in gardens, especially on mossy stones, abundant (Theodor Wolf). Duran, near Guayaquil (Rhoads). Pupa (subg. Leucochila) wolfii MILLER, Malakozoologische Blatter (n. F.), i, 1879, p. 127, pi. 14, f. 3.— Pupa wolfii Mil- ler, REIBISCH, Abhandl. naturwiss. Ges. Isis in Dresden, 1892, p. 27, pi. 2, f. 11. As described and figured by Miller (fig. 4), this species does not differ materially from G. servilis; but specimens from "Ecuador" (no. 307631, U. S. N. M.) and from Duran, opposite and near to Guayaquil (S. N. Rhoads, in A. N. S. P.), while agreeing with wolfii in all other respects, have an additional tooth, the infraparietal. This may have been over- looked by Wolf and Reibisch, or undeveloped in their speci- mens. The shell (pi. 28, figs. 1, 2, Ecuador, and pi. 28, fig. 3, Duran) tapers noticeably and is light brown. The lip is well expanded and thin, without a crest (this feature differen- tiating it from G. riograndensis) ; lip-ends are not very widely separated. The angulo-parietal lamella is exactly as in G. servilis, there being a median lobe towards the periphery, representing the inner end of the angular lamella. The small infraparietal nodule is opposite the middle of the parietal lamella, being therefore rather deep within (fig. 2). Colu- mellar lamella, basal and palatal plicae as in G. servilis. Length 2.55, diam. above aperture 1.05 mm. ; 5% whorls. Length 2.1, diam. above aperture 1 mm. ; nearly 5 whorls. 96 GASTROCOPTA, SOUTH AMERICA. This species is clearly distinct from G. pazi, and also from the species described from the Galapagos, though G. munita (Reibisch) approaches it. G. riograndensis differs by its well- developed crest behind the lip, wolfii having only the trace of a crest or none. 32. GASTROCOPTA MUNITA (Reibisch). PI. 19, figs. 1 to 7, 8, 10, 11. Shell deeply rimate, ovate-cylindric, with obtuse apex ; thin, diaphanous, smooth, opaque, pale corneous or whitish. Suture moderately deep. Whorls 5 to 5%, convex. Aperture sub- vertical, rounded, calloused; a bituberculate entering fold on the parietal wall of the aperture, another simple, somewhat receding one on the columella, as well as 4 smaller denticles within the outer lip, which, however, are often lacking, ex- cepting the one opposite the parietal lamella. The broad peristome is reflected and the margins are connected by a rounded callous. Length 2.5, diam. nearly 1.5 mm. Aper- ture 1 mm. long, nearly 1 wide (Reibisch). Galapagos Islands : Albemarle, on shrubs near the seashore (Wolf) ; Tagus Cove on leaves of Croton, and near Iguana Cove at 2000 ft.; also Narborough Island (Snodgrass and Heller). Pupa (Leucochila) munita REIBISCH, Abhandlungen der Naturw. Ges. Isis, in Dresden for 1892, p. 27, pi. 2, f. 9. — Pupa wolfii Miller, DALL, Proc. A. N. S. Phila., 1896, p. 446, pi. 17, f . 14 ; 1900, p. 94.— Pupa pfeifferi BOETTGER, Concholo- gische Mittheilungen, i, 1881, p. 68, pi. 12, f. 18. Not Pupa pfeifferi Krauss (prior to 1848). ' ' The species stands very near Pupa wolfii Miller, which is abundant in the province Guayaquil, Ecuador" (Reibisch). This species differs constantly from G. wolfii, in a great number examined, by the more convex outline of the spire, which is wider in the upper part, and by the much thickened or labiate peristome. G. wolfii tapers more regularly, the in- dividual whorls are more convex, and the peristome is thin. Other differences are that munita usually has a much stronger (though variable) crest behind the lip, and generally there is an interpalatal plica, which is lacking in wolfii so far as seen. GASTROCOPTA, SOUTH AMERICA. 97 While Reibisch was probably correct in mentioning wolfii as the species most nearly related to munita, the thick lip is a feature recalling rupicola, marginalba and some forms of barbadensis. Dr: W. H. Dall has discussed the tooth variations of this species (loc. cit., p. 446), and has generously permitted me to examine the material in the National Museum. As in several other multidentate species of the genus, the infraparietal, interpalatal and basal teeth, and the subcolumellar callous, are variable in development, and some or all of them may be lacking in fully adult individuals. The original figure is copied in pi. 19, fig. 7. At Tagus Cove, Albemarle, which in the absence of definite information may be taken as type locality, the shell varies in color from a somewhat transparent cartridge-buff (pi. 19, figs. 1, 8) to cinnamon or tawny (fig. 3). Usually it is somewhat opaque, and the periostracum is often worn. Under a strong lens it appears minutely granulose, and is therefore not glossy. The angulo-parietal lamella is more or less bifid in front view, and seen from below the parietal projects slightly on the columellar side (pi. 19, fig. 2). The infraparietal tubercle is variable in size, as in other species having it. Often it is a mere rudiment, and very rarely it is absent in fully adult shells. The columellar lamella is stout, short and horizontal; often there is a buttress, sometimes somewhat tubercular, under its inner end, as in rupicola and some other species; and as in these, it is individually variable, and not due to age. The lower palatal plica is an entering lamina, as in related species. The upper palatal is well developed, tuber- cular. Basal plica smaller, tubercular or shortly entering. There is a small interpalatal plica, variable in size and exact position, and sometimes lacking. Length 2.65, diam. 1.3 mm. Length 2.45, diam. 1.1 mm. Length 2.45, diam. 1.2 mm. In another lot from Tagus Cove (Snodgrass) the extremes of size are 2.15 and 2.45 mm. long. Others, found on crotons, have no infraparietal lamella. Specimens found by Dr. G. 98 GASTROCOPTA, SOUTH AMERICA. Baur on bones of turtles, in southern Albemarle, are 2.3 mm. long, 1.1 to 1.2 mm. diameter. The smallest seen from Albe- marle (Iguana Cove) is 2.2 mm. long, others of the usual size occurring in the same lot; the colors being from cartridge- buff with white lip to tawny with cinnamon lip. One excep- tionally simplified shell from this locality (pi. 19, fig. 10) has neither infraparietal or interpalatal teeth, and the basal fold is very minute. In most lots from Albemarle the shape varies from somewhat ovate to cylindric. On Narborough Island (Snodgrass) the infrapalatal nodule is generally either very low or entirely wanting, an inter- palatal plica is usually absent, and the basal fold is very small. The shape and thickened peristorne remain typical (pi. 19, fig. 11). There appears, therefore, to be slight racial divergence, since the form prevalent on Narborough is quite rare among specimens seen from Albemarle. On Charles Island only specimens of medium and small size have been found, length 2 to 2.4 mm. The crest behind the lip is wanting in many examples, and not strongly devel- oped in others. The teeth vary as in Albemarle examples. Tower Island has shells very similar to the narrower ex- amples from Albemarle, and showing the same variations. This species, which seems to be rather common on several islands of the Galapagos group, was first described by Profes- sor Boettger as Pupa pfeifferi, said to be from Pitcairn Island, from specimens supplied by Mr. Cuming. Nothing similar to it has been found in Polynesia, and as Cuming collected extensively in the Galapagos, there can be little doubt that his locality was erroneous in this case, as in many others. The original description of P. pfeifferi and copies of the figures follow. Pupa pfeifferi Boettg. PL 19, figs. 4, 5. Shell related to P. pediculus, but smaller, narrower, more oblong, pale cor- neous-yellow, not whitish-pellucid ; whorls less convex. Aper- ture smaller, rotund-quadrate, six-toothed, the teeth less strong; one lamelliform angular, which is rather distinctly bifid in the middle; one columellar; four smaller receding palatals, which are punctiform except the larger third one. GASTROCOPTA, SOUTH AMERICA. 99 Peristome little expanded, labiate. Length 2*4 to 2y2, width. 1 to 1% mm. Pitcairn Island, Tuamotu group (Dohrn-Pfeiffer coll., from H. Cuming). Differing from all the species of the section LeucochUus known to me, with the exceptions of P. marginalba P. and P. pellucida P., the species under consideration has a horn- brownish color, and is so easily to be distinguished from the second Pacific species of this section by this, as well as by the shape of the shell, the more numerous palatal plicae and the thickened rim of the small aperture, that the relegation of our form to P. pediculus as a variety cannot well be enter- tained. That one of the two species from Pitcairn Island enumer- ated in Beck's Index, p. 85, is identical with cur species ap- pears very possible ; yet as diagnoses of these nominal species do not exist, to my knowledge, I feel justified in proposing a new name for the species here described (Boettger). 33. GASTROCOPTA CLAUSA (Reibisch). PL 19, figs. 9, 12, 13, 14. Shell deeply rimate, ovate-cylindric with obtuse summit, thin, smooth, matt, pale corneous or whitish. Suture rather deep. 4% convex whorls. Aperture nearly vertical, round, narrowed by numerous teeth. The bipartite parietal tooth runs deeply into the throat, also the columellar tooth; in the outer wall there are two small denticles, sometimes wanting, on each side of the strongly developed middle tooth (which stands opposite the parietal tooth). The peristome expands but little and is hardly reflected, the ends joined by a rounded callous. Length 2.2, diam. 1.25 mm. Aperture 0.9 mm. long, 0.8 wide (Reibisch). Galapagos Islands: Indefatigable, on shrubs near the sea- shore (Wolf). Abingdon, at sea level (Snodgrass). Pupa (Leucochila) clausa REIBISCH, Abhandlungen der Naturw. Ges. Isis, 1892, p. 27, pi. 2, f. 10 (1893).— Pupa clausa Reibisch, BALL, Proc. A. N. S. Phila., 1900, p. 94. This species is a further evolution product of Pupa wolfii Mill., to which P. munita of Albemarle Island forms a transi- tion (Reibisch). 100 GASTROCOPTA, SOUTH AMERICA. The specimens from Abingdon (pi. 19, figs. 12-14) agree with the typical description and figure (fig. 9). The last two whorls are rather weakly convex. There seems to be little if any crest behind the lip, which expands narrowly. The angular and parietal lamellae are well separated, much as in G. bilamellata, and more than in any nearly related species; but the inner end of the parietal does not curve towards the periphery, as in the Immersidens group. The infraparietal lamella is laminiform and runs inward parallel to the parietal. Columellar lamella is very strong and the callous below it is built up into a subcolumellar lamella. The lower palatal plica enters deeply. Upper palatal plica is strong but shorter. A thin interpalatal stands between them. Basal plica well developed, entering. The peristome, as in G. munita, is strongly labiate or calloused within except at the sinulus. Length 2.1, diam. 0.9 mm. Length 2.2, diam. 1 mm. While related to G. munita, this is an extremely distinct species, recalling the West-Indian G. polyptyx and the Bonin Island species. Subgenus IMMERSIDENS Pils. 34. GASTROCOPTA DICRODONTA (Doering). ' * Shell minute, pupoid, smooth, substriatulate, a little shin- ing, brownish-corneous. Spire subconic, the summit tapering, rather obtuse. Whorls 5% to 6, a little convex, the last about two-fifths the length. Aperture oval-rounded, contracted by 5 (-6) teeth: the first, on the parietal wall, largest, twisted, bifid (forked or biramose), the right branch produced to the margin of the peristome, the other remote from the margin of the aperture ; second tooth columellar, tortuous, angulate, lengthened within; three pliciform palatal teeth. Peristome expanded, scarcely reflected, whitish, the margins nearly con- nected, right margin curved. Length 1.8 to 2, width 0.9 mm. ; aperture 0.7 to 0.8 mm. long" (Doering). Argentina: around Villa Vicencio in the Sierra de Men- doza; all suitable places in the sierras of Cordoba and San Luis (Dr. Stelzner). GASTROCOPTA, SOUTH AMERICA.' ' 101 P.[upa] dicrodonta DOERING, Apuntes, etc., in Boletin de la Acad. Nac. de Ciencias de la Rep. Argentina, iii, 1879, p. 83. ' ' This species may be distinguished easily from all the rest by the bifid tooth on the parietal wall of the aperture. It is composed of two parallel ridges, the superior one being pro- longed upward to the position of the insertion of the lip, the other one having a more immersed place, behind the first. The rest of the teeth of the aperture are of smaller size. This species is doubtless the most abundant in the territory of the sierra of Cordoba, etc." (Doering). 35. GASTROCOPTA IHERINGI (Suter). PL 17, fig. 16. The shell is minutely perforate and rimate, convexly taper- ing above, the last two whorls nearly equal in diameter. There are 5% moderately convex whorls, the last one without crest. Apex obtuse. Surface minutely, unevenly striate. The aper- ture is very shortly oval. Peristome thin, expanded through- out, interrupted above. The angular and parietal lamellae are nearly parallel and of about equal length ; the angular is sigmoid, its inner end curving towards and joining the pari- etal. Parietal lamella nearly straight, highest where the an- gular joins it. Columellar lamella large, semicircular, its anterior part running forward, inner part curving downward parallel to the axis. The upper and lower palatal plicae are short, high, entering laminae. Basal fold is large, straight- topped, and nearly radial, transverse to the cavity. Length 2.3, diam. above aperture 1.1 mm. Brazil: Bollaxa, City of Rio Grande do Sul, subfossil in a modern deposit (H. von Ihering). Pupa iheringi SUTER, Revista do Museu Paulista, iv, 1900, p. 336, pi. 3, f. 8, Sa. The armature of the aperture is more like that of G. btta- mellata than any other of our northern species, the differences being merely in small details of form, except that the lower palatal plica is more deeply immersed in bilameUata. Figured and described from paratypes. This species is very closely related to G. dicrodonta, perhaps identical; yet the latter is slightly smaller, with a fraction of a whorl more, and comes 102 ' ' GASTROCOPTA, SOUTH AMERICA. from a more elevated region, rather different faunally. Pend- ing a direct comparison, both may be allowed to stand. 36. GASTROCOPTA PAZI (Hidalgo). PL 17, fig. 13. The shell is rimate-subperforate, ovate-cylindric, thin, very lightly striatulate, corneous; spire with the apex obtuse; suture deep ; whorls 5 to 5%, convex, the last about one-third the entire length, ascending a little in front, the base obtusely angular around the umbilical crevice. Aperture is vertical, truncate-oval, six-toothed: one transverse columellar; two folds (one angular, and one more deeply placed parietal), distinct or joined at the base, and appearing like a bifid tooth; three teeth in the right margin, situated deeply, the middle one larger. Peristome equally expanded, the right margin strongly curved above ; columellar margin dilated. Length 2.5, diam. 1 mm. (Hidalgo). Peru: Amancaez, in the environs of Lima (type locality). Ecuador: Guayaquil. Panama (Paz). Pupa pazi HID., Journal de Conchyl., 1869, p. 412 ; 1870, p. 66 ; 1875, p. 129, pi. 7, f . 7.— PFR., Monogr. Hel. Viv., viii, p. 402. This species was well described, but the figures are worth- less. In a subsequent notice Hidalgo states that the speci- mens from the last two localities are those (alluded to in the description) in which the angular and parietal lamellae are united at their bases. I select the Amancaez specimens as types. Perhaps those from the other localities are specifically distinct. I have not seen South-American specimens, but some Panama shells received from Sr. Paz under this name prove to be typical G. servilis. G. pazi, from the description, must be very close to G. prototypus, but differs by having a basal fold. Until types or topotypes can be examined, its exact relation to other species remains uncertain. Examples from the city of Guatemala, described as G. pro- totypus basidentata, agree rather well with the description of G. pazi, and may possibly be referable to that species. GASTROCOPTA, SOUTH AMERICA, EASTERN ASIA. 103 (Position uncertain.) 37. Pupa curta Anton. Shortly cylindric ; 4y2 whorls, with deep suture; finely striate; epidermis brown; narrowly um- bilicate; aperture somewhat compressed (as in pagodula), with three lamelliform denticles. Breadth %, height 1 line (Anton). Chili (Anton). Pupa curta ANTON, Verzeichniss der Conchylien welche sich in der Sammlung von Hermann Eduard Anton befinden, 1839, p. 47, no. 1731.— PFR., Monographia, ii, p. 355.— Alcea annaaensis BECK, Index Moll., 1837, p. 85 (I. Annaa; no de- scription).— Not Pupa curta Potiez et Michaud, 1838. Nothing has been added to Anton's description of this species, which may be a Gastrocopta. In a letter to Pfeiffer he stated that it was identical with the above-mentioned spe- cies of Beck, of which only the name and locality were re- corded. The name P. curta had been used in 1838, but it is not worth while to re-name a poorly defined species, not localized, and impossible to recognize. III. SPECIES OP EASTERN ASIA, FROM JAPAN TO FRENCH INDO-CHINA. This geographic division includes also the Bonin and Loo- choo Islands. It is characterized by the prevalence of Gas- trocoptas of the series of G. armigerella, no other group being known as yet. It is to be expected that China will eventually add many species. Subgenus SINALBINULA Pilsbry. See p. 11. Most Sinalbinulas have the mouth parts rather more coarsely granular than in other gastrocopts. The ex- terior also is usually minutely granular, a character also common to many species throughout the genus. Sinalbinula is widely distributed in eastern and southern Asia, south to Australia, in Polynesia, Micronesia and Hawaii. Westward there are single species in the Trans-Caucasus region (no. 64) and Abyssinia (no. 65), these being survivors 104 GASTROCOPTA, EASTERN ASIA, of the early Oligocene migration westward, when the group flourished in Europe from Middle Oligocene to Pliocene. Sinalbinula is more widely distributed than any other sub- ordinate group of the genus. The Asiatic mainland and European Pliocene species are the most progressive, some having the angulo-parietal lamella thoroughly unified, as in typical Gastrocopta. In America no species are referable to Sinalbmula proper, but the section Vertigopsis is evidently a derivative group, differentiated chiefly by the degeneration of both the angular and parietal lamellae, the former being either wholly lost, or in some forms still present but very minute. The Bonin Island group remains primitive in the separation of angular and parietal lamellae, leading us to believe that they have been isolated a very long time. The Australian Sinalbinulas are more primitive than the Asiatic continental forms. The angular and parietal lamellae are imperfectly connected, and the columellar lamella is hori- zontal and short, or the inner end is but slightly curved down. The palatal callous is thin but noticeable in species I have seen. They are in about the same stage of evolution as the isolated Bonin Island recent species, and those of the European Oligo- cene, though rather different by the strongly converging in- stead of subparallel angular and parietal lamellae. Key to Eastern Asiatic Species. a. Three subequal and parallel lamellae on the parietal wall ; Bonin Is. b. Length about 2.4 mm. G. chichijimana, no. 38. &1. Length about 1.75 mm. G. c. ogasawarana, no. 38a. a1. Angular and parietal lamellae closely juxtaposed and united by a callous, but not continuous. b. Parietal lamella nearly behind the angular ; an infra- parietal lamella shorter than the parietal ; Bonin Is. G. boninensis, no. 39. 61. Angular and parietal lamellae juxtaposed laterally; no infraparietal lamella or tubercle ; Indo-China. G. ejecta, no. 45. GASTROCOPTA, EASTERN ASIA. 105 a2. Angular and parietal lamellae united into a continuous, bilobed lamella. &. 4 teeth : angulo-parietal, columellar, upper and lower palatal; 214 mm. long; Macao, Hongkong. G. meridionalis, no. 44. b1. 6 or 7 teeth. c. Angulo-parietal lamella arcuate in basal view, its inner end curving towards columella ; infra- parietal pliciform; Pe-chili. G. hirasei, no. 42. c1. Angulo-parietal lamella approximately straight in a basal view. d. Inner end of columellar lamella bent down ; a tubercular infraparietal lamella usually present. e. Length 2.25 to 2.5 mm.; Japan, China. G. armigerella,. no. 40. e1. Length 2 mm. ; more broadly ovate ; Hachijo I. G. a. hachijoensis, no. 40a. d1. Columellar lamella short and straight, horizontal; no infraparietal lamella or tubercle. e. Length about 2 mm.; Korea. G. coreana, no. 41. e1. Length about 1.5 mm.; Sytchuan. G. monadicula, no. 43. 38. GASTROCOPTA CHICHIJIMANA n. sp. PL 20, figs. 1, 2. The shell is rimate, ovate-conic, pale olive-buff (dotted with white by disintegration of the cuticle in the specimens seen), almost smooth but hardly shining, composed of 5% rather strongly convex whorls, the last one flattened over the lower palatal region, having a strong, wide and rounded crest be- hind the lip. Aperture having 8 teeth, of which three, sub- equal, are on the parietal wall ; the angular lamella is weakly connected with the parietal by a low callous at its inner end ; parietal lamella more deeply placed, its anterior end about as 106 GASTROCOPTA, EASTERN ASIA. far forward as the middle of the angular lamella ; inf raparietal lamella long, not quite so deeply placed as the parietal. Colu- mellar lamella strong, horizontal throughout. The palatal and basal plicae stand on a strong callous ridge, the lower palatal being largest, suprapalatal and basal smaller. In the type lot there are one or two minute infrapalatal denticles, between lower palatal and basal. The lip is thin, a little ex- panded, the outer margin somewhat bent in, in the middle, and very strongly arched above. The adnate part of the peristome is very short. Length 2.4, diam. above aperture 1.35 mm. Chichi jima, Ogasawara (Bonin) islands (Hirase). Type and cotpyes No. 83897 A. N. S. P. Peculiar for the nearly equal length of the three lamellae of the parietal wall, which stand parallel, the angular and parietal being only weakly connected. The teeth in the base are variable, some individuals having two denticles between lower palatal and basal, some one, and one example none. The basal and infrapalatal folds are some- times subequal. The crest behind the lip is variable, as in American Gastro- coptas of the pentodon group. Usually it is strongly de- veloped, but in one example it is reduced to a very low, broad wave. A small individual measures, length 2.25, diam. 1.3 mm., 5 whorls. Under a high power, the surface is seen to be densely, irregularly granulose throughout. 38a. G. c. ogasawarana n. subsp. PL 20, figs. 3, 6. The shell is smaller than chichijimana, with the angular and parietal lamellae less widely separated ; basal fold stout, well- developed; no minor folds between it and the lower palatal plica. Aperture of a more triangular shape, the external crest and the internal palatal callous strongly developed. Length 1.75, diam. 0.96 mm. Ogasawara (Bonin) islands: Chichi jima, type loc. ; Ototo- shima (Hirase). Some specimens are intermediate in size between this form and typical chichijimana ; otherwise it would be thought speci- fically distinct. GASTROCOPTA, EASTERN ASIA. 107 39. GASTROCOPTA BONINENSIS n. sp. PL 20, figs. 4, 5. The shell is rimate, oblong-conic, composed of 5 rather strongly convex whorls, very pale buff, the summit gray. Sur- face scarcely shining, very minutely and densely, irregularly granulose, but scarcely showing a trace of striae. Last whorl flattened over the lower palatal region, having a high crest behind the lip. Angular lamella curving towards the right, its inner end joined to the anterior end of the parietal lamella by a low callous. Parietal lamella nearly behind the angular. The infraparietal lamella is decidedly shorter than the parietal. Columellar lamella strong, horizontal. Four plicae stand upon the strong palatal callous, the lower palatal longest, the upper palatal, basal and suprapalatal being successively smaller. Lip thin, a little expanded. Length 2.17, diam. 1.07 mm. Ogasawara (Bonin) islands: Minamijima, type loc. ; Chichi- jima (Hirase). The angular and parietal lamellae are far more closely united than in G. chiehijimana, and the infraparietal lamella is shorter. It differs from G. armigerella by the lamelliform infraparietal and the less united angular and parietal lamellae. The microscopic granulation is coarser in boninensis and chiehijimana than in armigerella. 40. GASTROCOPTA ARMIGERELLA (Eeinhardt). PL 20, figs. 7 to 11. Shell dextral, conic-ovate, rimate, whitish, pellucid, a little shining, smooth. Whorls 5, cylindric, parted by a deep suture, the last a little compressed at base. Aperture rounded- triangular, 7-toothed: two teeth on the parietal wall, one placed in front of the insertion of the outer lip, the other near the columella, smaller, nodule-like and deeply placed; columella bidentate, the upper tooth stronger; three palatal teeth, the uppermost smallest, the lower one large ; they are joined by a callous which is visible externally. Peristome subcontinuous, simple, a little expanded, the right margin in- clined above towards the dilated columella. Length 2%, width 1 mm. (Reinhardt). 108 GASTROCOPTA, EASTERN ASIA. Japan: Misaki, Sagami (type loc., Hilgendorf ) ; Miyake- jima, Izu; Chichi- jima, Ogasawara (Bonin) Islands; Yoron- jima, Okinoerabu-shima, Kume-jima, Kunchan, Yaeyama, in the Luchu arc (Hirase). Korea: Soeul and Hatong (Dr. Gottsche). China: Dshi-nan-fu, Prov. Shan-dung (Moltner) ; Shanghai (Heude, Schmacker) ; Ning-kuo-fu, Prov. An-hui (Heude, for P. monas) ; Prov. Hunan (Fuchs) ; Dshie-dshow and Tshing-yuan, Prov. Gansu (v. Mlldff.) Pupa (LeucochUa?) armigerella BEINHARDT, Sitzungsber. Ges. Nat. Freunde Berlin, 1877, p. 96 ; Jahrbucher D. Malak. Ges., iv, 1877, p. 323, pi. 11, f. 7. — KOBELT, Fauna Japonica, p. 62, pi. 1, f. 17. — Pupa (Leucochilus) armigerella Reinh., MOELLENDORFF, Jahrb. D. M. Ges. xi, 1884, p. 178 ; xiv, 1887, p. 17. — GREDLER, Mai. Bl. (n. F.), ix, p. 145. — Leucochilus armigerellum Reinh., MLLDFP., Annuaire du Mus. Zool. de 1'Acad. Imp. des Sci. de St.-Petersb. vi, 1902, p. 85.— Pupa atoma HEUDE, Notes sur les Moll. Terr, de la Vallee du Fleuve Bleu, i, p. 77, pi. 18, f. 19 (quoted as "Pupa extrema Heude" by Moellendorf, 1. c., p. 85). — Pupa monas HEUDE, t. c. p. 78, pi. 18, f. 18. Not P. monas Morelet lS79.—Bifidaria armi- gerella var. luchuana PILSBRY, Proc. A. N. S. Phila. 1901, p. 484, pi. 24, f. 54 (Kunchan, Okinawa). G. armigerella is intermediate between G. coreana and G. hirasei, the first having simpler, the last more developed apertural teeth. The parietal lamella is higher than the angular, and its anterior end is completely concrescent with the latter, not projecting on the columellar side, as in many American species. The tooth as a whole is bilobed, being lower at the junction of the two elements (fig. 11). The infraparietal is tuber- cular. The columellar lamella is bent into a semicircular shape, the inner end being turning down vertically, the outer end horizontal (fig. 10) . The basal fold stands at the junction of the basal and columellar margins, rather more upon the columellar, as in Vertigopsis. The lower palatal plica is a little lengthened, the others short. The size varies somewhat. Length 2.5, diam. above aperture 1.2 mm. (Miyakejima, Izu). GASTROCOPTA, EASTERN ASIA. 109 Length 2.25, diam. above aperture 1.15 mm. (Miyakejima). Length 2.4, diam above aperture 1.15 mm. (Shanghai, China). The synonymy has been worked out by Dr. von Moellendorff, and I have verified his results by the examination of large series of specimens from Heude, Hirase and Schmacker. Pupa monas Heude found on stone walls and rocks in the mountains south of Ning-kuo-fu, is almost typical armi- gerella, rather small and cylindric — the type was 2 mm. long. Pupa atoma, Heude, found ' ' very common under dead leaves of bamboos in the environs of Shanghai" was 2% mm. long, and figured without an infraparietal nodule ; but in a Shanghai lot from Heude and others from Schmacker, the nodule is present, though sometimes quite small and readily overlooked. According to von Moellendorf, atoma has no specific char- acters. PI. 20, fig. 8 is a Shanghai specimen of atoma re- ceived from Heude. The form I described as Bifidaria armi- gerella var. luchuana from Kunchan, Okinawa, is typical armigerella ; I had compared it with shells wanting the infra- parietal nodule. One of this lot is sinistral. 40a. G. a. hachijoensis n. subsp. PL 21, fig. 1. The shell is much stouter in figure than armigerella, ovate- conic. Length 2, diam. 1.23 mm. Japan: Hachijo-jima, an island of Izu (Hirase) ; type and paratypes No. 83395 A. N. S. P. 41. GASTROCOPTA COREANA n. sp. PL 21, figs. 2, 3, 4. The shell is subcylindric but tapering slightly from the last whorl, the upper two whorls forming a convexly conic sum- mit ; whitish-corneous, quite lightly striate. Whorls 5, rather strongly convex, the last flattened over the lower palatal region, and with a narrow, rather low crest behind the narrowly expanded lip. Angulo-parietal lamella as in B. armigerella, being straight, the angular forming a spur on the right side, and lower than the parietal. There is no infraparietal nodule. Columellar lamella strong, short, horizontal, its inner end not 110 GASTEOCOPTA, EASTERN ASIA. curving downward. Basal and palatal plicae as in G. armi- gerella, the lower palatal being longer than the upper, supra- palatal and basal smaller than either. Length 2.05, diam. 1 mm. Korea: Kojeto (Hirase). Type and para types No. 95775 A. N. S. P. This species differs from G. armigerella by having the colu- mellar lamella short and straight, wholly horizontal, the inner end not bent down, and by the absence of an infraparietal nodule. 42. GASTROCOPTA HIRASEI n. sp. PL 21, figs. 5, 6, 7, 10. The shell is tapering-cylindric, shaped like B. armigerella, whitish-corneous, very slightly striate, composed of 5 rather strongly convex whorls, the last one flattened over the lower palatal region, slightly grooved over the lower palatal plica. Angulo-parietal lamella arcuate in a basal view (pi. 21, fig. 7), the inner end curving towards the columella. It is low in the middle, at the junction of angular and parietal elements, the angular and inner end of parietal being high. Infraparietal lamella pliciform, well developed. Columellar lamella hori- zontal in front, but inward forming a broad, down ward- turned plate. There is also a convex hyaline callous ascending the axis, within the back (pi. 21, fig. 6). Basal fold sub- columellar in position, subvertical. Palatal plicae strong, the lower one long; suprapalatal minute. Peristome thin, well expanded. Length 2, diam. 0.95 mm. China: Shan-hai, Province Pe-chili (Hirase). This species has all the apertural processes more developed than G. armigerella, the parietal lamella being bent inward, the infraparietal in form of a short lamella instead of a nodule, and the columellar lamella expanding in a broad plate. A single specimen collected with G. coreana at Kojeto, Korea, has the bent parietal and broad columellar lamella of hirasei, though a little less strongly developed, but the infraparietal is tubercular, as in armigerella. It measures, length 2.28, diam. 1.1 mm. It will probably prove to represent a Korean subspecies. GASTROCOPTA, EASTERN ASIA. Ill 43. GASTROCOPTA MONADICULA (Heude). PL 21, figs. 8, 9. Shell small, spire ovate, whorls 5, rather inflated, joined by an impressed suture; aperture semielliptical, denticulate; peristome continuous, basal and external margin three- toothed; one tooth on the columella, one at the sinus on the parietal wall; an oblique rima. Length 1%, diam. y2 mm. (Heude). China: Tchen-k'eou, Province Sytchuan. Pupa monadicula HEUDE, Notes Moll. Terr. Fl. Bleu, p. 152, pi. 35, f. 24. This species is much smaller than G. armigerella. Heude 's figures are copied, as I have not seen the species. 44. GASTROCOPTA MERIDIONALIS (Moellendorff). Shell dextral, conic-ovate, whitish, pellucid, a little shining, smooth; whorls 5, cylindric, parted by a deep suture, the last a little compressed basally. Aperture rounded-triangular, 4- toothed: one lamelliform tooth on the parietal wall, bifid an- teriorly; another rather strong tooth on the columella, and two palatals. Peristome simple, a little expanded, the margins approaching. Length 2*4, diam. 1^4 mm. (Mlldff.) China: village of Sha-ming, near Macao (R. Hungerford) ; Hongkong. Pupa (Leucochilus) meridionalis MLLDFF., Nachr. D. M. Ges. xvi, 1884, p. 28; Jahrb. D. M. Ges. xi, 1884, p. 179.- Leucochilus meridionale MLLDFF., Binnen-Mollusken aus Westchina u. Centralasien, ii, 1902, p. 85. Described from one imperfect shell collected in an old churchyard. According to von Moellendorff it is close to G. armigerella, but well distinguished by the smaller number of teeth. 45. GASTROCOPTA EJECTA (Bavay & Dautzenberg) . PL 21, fig. 12. Shell small, thin and pellucid, doliolif orm, tapering towards the apex, narrowly perforate. Whorls 5, convex, gradate, regularly increasing, joined by a conspicuous and narrowly margined suture, and obliquely, very delicately plicate, the 112 GASTROCOPTA, EUROPE. plicae visible with difficulty even under the lens. Aperture almost circular, somewhat biangular above, rounded below; peristome continuous, somewhat spreading, very little thick- ened. Throat 4-toothed: palatal [= parietal] tooth strong and doubled, the inner part larger, pliciform, the outer smaller, less entering; columellar tooth horizontal; parietal [=; palatal] teeth two, oblique, the lower one larger. A very small tooth in the lower angle of the columella, sometimes a little larger. Color white, hyaline. Alt. 2%, diam. maj. 1%, diam. aperture % mm. (B. & D.) Indo-China: shore and islands of the Bay of Along (M. Demange ) . Pupa (Bifidaria) ejecta BAVAY et DAUTZENBERG, Journal de Conchyl. Ix, 1912, p. 29, pi. 1, f. 16, 17. This species stands very near to Gastrocopta armigerella Reinh., but differs, according to MM. Bavay and Dautzenberg, by wanting an infraparietal tooth, and by the form of the angular and parietal lamellas, which are juxtaposed laterally, not superposed as in armigerella. It was found in the marine shell sand in company with Diplommatina, Georissa, Kaliella, all little land shells living among rocks, and evidently washed down to the sea. IV. SPECIES OF WESTERN SIBERIA, TRANS-CAUCASUS AND THE EUROPEAN TERTIARY. Gastrocopta appeared in Europe in the middle Oligocene. The subgenus Albinula is represented by the series of G. quadriplicata, which in various mutations continued to the Upper Pliocene (G. fossanensis, Piedmont). The subgenus Sinalbinula began with species of the G. didymodonta series in the Upper Oligocene, became extinct in Europe at the close of the Miocene, but still survives in the recent Trans-Caucasian G. theeli. The series of G. nouletiana, in several successive slight mutations, existed through the Miocene. The fate of Gastrocopta in Europe was determined, we may suppose, by the lowering of temperature which closed the Pliocene ; but it should also be noted that the stock was appar- GASTROCOPTA, EUROPE. 113 ently rather inflexible, and competitors of the same family were more numerous, perhaps, than in any other part of the world. The first European Gastrocoptas were described by Dupuy in 1850. Shortly after, Al. Braun described the leading Ger- man species, in Walchner's Geognosie, 2d edition. In the copy of this work at hand, as well as in two others on which bibliographic data are available, there are but 1120 pages; beginning Braun 's contribution, but not containing the Pupae ; so that I have copied references from Sandberger. The date of the later pages is uncertain. Sandberger, in Die Con- ehylien des Mainzer Tertiarbeckens, 1863, and Die Land- und Siisswasser-Conchylien der Vorwelt, 1870-1875, and especially Dr. Oskar Boettgei4 in his admirable paper, Die Entwickelung der Pupa-Arten des Mittelrheingebietes in Zeit und Raum, in Jahrb. Nassauischen Vereins Naturkunde, 1889, are the chief authorities ; but references to numerous other authors will be found below. Perhaps there are other described species; the plan of this work does not include a thorough review of palaeontological literature. Really adequate illustrations of European Tertiary species are still wanting. Dr. O. Boettger classified the European Tertiary Gastrocop- tas (Leucochilus) in three groups, noted below. Of these groups, that of quadriplicata was said by Sandberger to be related to the recent American G. contracta. Boettger consid- ered quadriplicata an ancestor of contracta. I have figured a French Pliocene species of this group, G. dupuyi (pi. 22, figs. 1, 2, 4) to show the resemblance. It will be noted that the angular and parietal lamellae are wholly concrescent, and the parietal turns towards the periphery at its inner end; also it has a direct inward spur (pi. 22, figs. 2, 4), some trace of which can be seen in the recent American G. armifera also. The columellar lamella turns down at the inner end (fig. 4), and the palatal plicae stand upon a callous ridge. These are characters of both the armifera and contracta groups of AlUnula, which indicate, at least, that the American and European species are of common immediate ancestry, though it appears to me that the European stock is a little too special- 114 GASTROCOPTA, EUROPE. ized to have been directly ancestral to the American. It ap- pears likely that the European species of Albinula were de- rived from Asia in early Oligocene times, together with Sinalbinula (didymodonta group) and many other land shells, rather than that the Asiatic and American forms came from Europe. It is remarkable that Albinula, while it gave off numerous mutations, changed very little from the Middle Oligocene to the Pliocene, where G. dupuyi and G. fossanensis surely differ but little from the earliest known European Albinula, G. quadriplicata. Whether the Albinula group arose in Asia or North America is an open question at present. It was certainly a mature group at the time of its first known appearance in Europe. The other groups of European Tertiary Gastrocopts belong to the Asiatic section Sinalbinula, so far as I can determine from the literature and a few specimens. Some of them, such as the Upper Oligocene G. fissidens Sandb., have the three lamellae of the parietal wall well separated, as in the recent G. chichijimana and ogasawarana, which seem to be ancient forms, preserved by their isolation. Other and later species, such as G. baudoni, from the Pliocene of Hauterive (pi. 21, figs. 13, 14) have wholly concrescent angular and parietal lamella? and no infraparietal, and resemble very closely the recent G. coreana in all structural characters. Whether G. baudoni is an advanced descendant of G. obstructa, or has more direct relations with Asiatic forms due to later migra- tions, cannot now be determined. Recent representatives of the same group (Sinalbinula) are G. pleimesi of Abyssinia and G. theeli of Trans-caucasus. Both are known to me only by descriptions and figures, the latter too small to be any use in the study of phylogenies. Subgenus ALBINULA (See p. 13). Series of G. quadriplicata. 46. GASTROCOPTA QUADRIPLICATA (Al. Braun). Pupa quad- riplicata AL. BR., in Walchner's Geognosie, 2. Aufl., (1851?) p. 1135. — Leucochilus quadriplicatum (Al. Br.) BOETTGER, GASTROCOPTA, EUROPE. 115 Jahrb. Nassauischen Vereins Naturkunde, Jahrg. 42, 1889, p. 277. — KLIKA, Tert. L. u. Siisswasser Conch. Bohm, p. 91. — Vertigo turgida REUSS, Palaeontographica ii, 1852, p. 30, pi. 3, fig. 8 (Tuchoritz). Middle and Upper Oligocene and Mio- cene, Germany and Bohemia. G. Q. LAMELLIDENS (Sandberger) . Pupa lamellidens SANDB., Mainzer Becken, 1863, p. 55, pi. 5, fig. 8; Vorwelt, p. 398. Upper Oligoceiie, Tuchoritz, etc., Bohemia. Considered by Boettger to be a local variety of quadriplicata. 47. GASTROCOPTA QUADRIDENTATA (Klein). Pupa quadri- dentata KL., Jahresh. Ver. Vaterl. Naturk. in Wiirttemberg, ix, 1853, p. 216, pi. 5, fig. 13.— Pupa (L.) quadridentata KL, MILLER, Jahresh. Wurttemb. Nat. Ver. 1900, p. 399, pi. 7, fig, 17. Upper Miocene, Germany. 48. GASTROCOPTA SUEVICA (Sandberger). P. (Vertigo) suevica SANDBERGER, Vorwelt, 1875, p. 654. — Pupa (Leucochi- lus) suevica Sandb. MILLER, Jahresh. Wurttemb. Nat. Ver. 1900, p. 398, pi. 7, fig. 16, with var. minor Miller. Upper Miocene, Steinheim. 49. GASTROCOPTA LARTETI (Dupuy). Pupa larteti DUP., Journ. de Conchyl., i, 1850, p. 307, pi. 15, f. 5.— Vertigo larteti Dup., BOURGUIGNAT, Hist. Malac. de la Colline de Sansan, 1881, p. 71. Middle Miocene, Sansan, southwestern France. 50. GASTROCOPTA DUPUYI (Michaud). PL 22, figs. 1, 2, 4. Vertigo dupuyi MICH., Annales Soc. Linn, de Lyon, n. ser., ii, 1855, p. 46, pi. 5, f. 12, 13. Pliocene, Hauterive, (Drome), France. 51. GASTROCOPTA FOSSANENSIS (Sacco). Vertigo fossanensis SACCO, Mem. R. Accad. Torino, 2 ser., vol. 37, 1885, p. 31, pi. 2, f. 4. — V. f. var. quatuordentata SACCO, Atti Soc. Sc. Nat. Milano, vol. 29, 1886, p. 49, pi. 2, f. 11.— Scarabella fossanensis and var. quatuordentata SACCO, Moll. Terz. Piemont, p. 70, pi. 6, f. 5, and var. g., f. 6. Upper Pliocene, Fossano, Pied- mont. From the figures, Boettger thought these identical with quadridentata and quadriplicata, respectively; yet it seems likely that some differences exist. 116 GASTROCOPTA, EUROPE. Subgenus SINALBINULA (See p. 103). Series of G. nouletiana. 52. GASTROCOPTA NOULETIANA (Dupuy). Pupa nouletiana DUP., Journ. de Conchyl, i, 1850, p. 309, pi. 15, f. 6.— BOETTGER, Palaeontographica, Bd. 24, 1877, p. 194, pi. 24, f. 5. . — Leucochilus nouletiana Dup, BOETTGER, Bericht Senckenb. Nat. Ges., 1884, p. 272, pi. 4, f. Ha, &, and var. gracilidens Sandb., pi. 4, f. 12-13. — Vertigo nouletiana Dup., BOUR- GUIGNAT, Malac. Sansan, p. 73, pi. 4, f. 92-95. — ? Vertigo ludovici BGT., t. c, p. 75. — ? Vertigo nouleti MICHAUD, Journ. de ConchyL, 1862, p. 77, pi. 4, f. 1, Hauterive (Pupa n.t on plate). Middle Miocene, Sansan, Lake Balaton, etc. 52a. G. N. GRACILIDENS (Sandberger) . Pupa gracilidens SANDB., Vorwelt, 1875, p. 600. Lower Miocene of Schleusen- kammer, and Upper Miocene of Undorf bei Regensburg. 52&. G. N. FARCIMEN (Sandberger). Pupa (Vertigo) far- cimen SANDB., Vorwelt, 1875, p. 600, pi. 29, f. 24. Upper Miocene, Undorf, Zant bei Ingolstadt, etc. The status of the following five species from the colline of Sansan is uncertain; probably all belong to one species of Gastrocopta. The figures are poor. VERTIGO BARRERI Bourguignat, Hist. Malac. de la Colline de Sansan, 1881, p. 76. VERTIGO CHYDAEA Bgt., t. c., p. 77. VERTIGO EUCRINA Bgt., p. 79. VERTIGO TAPEINA Bgt., p. 80. VERTIGO NECRA Bgt, p. 81. Series of G. didymodonta. 53. GASTROCOPTA DIDYMODONTA (Al. Braun). Vertigo didy- modonta AL. BE., in Walchner's Geognosie, 2. Aufl, (1851?), p. 1135. — Pupa didymodus Al. Br, SANDBERGER, Mainzer Becken, p. 57, pi. 5, f. 14. — Leucochilus didymodus Al. Br., BOETTGER, Jahrb. Nassau. Ver. Nat, vol. 42, 1889, p. 283. Upper Oligocene, Hochheim. 54. GASTROCOPTA HETERODUS (Boettger). Pupa (Leucochi- lus) heterodus BTTG, Neues Jahrb. fiir Mineralogie, etc, 1877, p. 80.— MILLER, Jahresh. Wiirttemb. Nat. Ver, 1900, p. 398, pi. 7, f. 14. Upper Miocene, Steinheim. GASTROCOPTA, EUROPE. 117 55. GASTROCOPTA MUNIERI (Deshayes). Pupa munieri DESK., Anim. sans Vert. Bassin Paris, ii, 1864, p. 858, pi. 56, f . 25-27. Oligocene, Limestone of Beauce, near fitampes. 56. GASTROCOPTA FISCHERI (Deshayes). Pupa fischeri DESK., 1. c., f. 34-36. 57. GASTROCOPTA BIFIDA (Desh.). Pupa bifida DESK., t. c. p. 860, pi. 56, f. 19-21. This species and the two preceding, from the same formation and locality, have been placed in the synonymy of B. didy modus, but not from a comparison of specimens. Their status and exact horizon are uncertain. 58. GASTROCOPTA OBSTRUCTA (Al. Braun). Pupa obstruct a AL. BR., in Walchner's Geognosie, 2. Aufl., (1851?), p. 1135. — Leucochilus obstructum Al. Br., BOETTGER, Jahrb. Nassau. Ver. Nat., 42, 1889, p. 284. — Pupa obstructa var. francofur- toysidia, being merely a further development of that group, differentiated by the pro- duced and partly free last whorl. There cannot be any doubt that Gyliauchen and Hypselos- toma are two independent derivatives from Boysidioid ances- tors, their resemblance in shape being due to parallel modifi- cation in the two series. Key to Species of Gyliauchen. a. Surface minutely rugose or granulose; an excavation or concavity between the upper and lower palatal plicae. &. Last whorl not ascending, shortly free, the upper margin of aperture advanced forward of the lower; alt. 2.6, diam. 2.7 mm. Samui I. G. transitans, no. 3. &1. Last whorl ascending somewhat, the aperture look- ing upward slightly, the basal margin advanced. c. Diam. 2.5 mm. ; spirally striolate. Samui I. G. striolatus, no. 4. c1. Diam. 3 mm. or more ; surface granulose. d. Neck long ; aperture with several lamel- lae between the parietal and columellar. Perak. G. hungerfordianus, no. 2. d1. Neck moderate or short; aperture dis- tinctly looking upward. GYLIAUCHEN. 211 e. Pale-colored; only one infrapari- etal lamella. Ava. G. bensonianus, no. 1. e1. Dark brown. Tonkin. G. crossei, no. 5. a1. Sculpture of spiral threads or strise; space between the two palatal plicae nearly flat, not excavated. 6. Last whorl excavated or concave below the periph- ery ; umbilicus wide ; spiral striation rather coarse. c. Very broadly umbilicate. Kalao. G. everetti, no. 7. c1. Moderately umbilicate. Tenimber I. G. dohertyi, no. 8. 61. Last whorl flattened but not excavated below the periphery; umbilicus narrow; spiral striation fine and close. Java. G. fruhstorferi, no. 6. Series of G. crossei. Periphery having a rounded keel, a concavity above it; surface minutely granulose; a concavity between the palatal plica3. 1. GYLIAUCHEN BENSONIANUS (Blanford). PI. 37, figs. 11, 12. Shell moderately umbilicated, turbinate, not distinctly stri- ated, thin, horny. Spire conical, apex papillar and with the axis oblique, suture deep. Whorls 4, the upper ones flattened, the last bulging below the suture, and again at the periphery (where it bears a prominent rounded keel), rounded beneath, and compressed towards the umbilicus. It rises somewhat towards the mouth, which is round, nearly vertical, slightly turned upwards, free from the other whorls, and furnished inside with five lamellar teeth, four of which are equidistant and opposite to each other at the upper and lower corners of the mouth, so as to form a partial St. Andrew's cross, while the fifth, which is smaller, is close to and above that at the upper corner of the parietal margin. Peristome free, simple, broadly expanded and trumpet-shaped. Major diam. 3, minor 2.2, alt. 2 mm.; diam. of peristome 1 mm. (Blanford). 212 GYLIAUCHEN. Ava : Mya Leit Doung. Hypselostoma bensonianum BLANFORD, Journ. As. Soc. Beng., vol. 32, 1863, p. 326.— PPR., Monogr., v, 437.— HANLEY & THEOBALD, Conch. Indica, 1870, pi. 8, f . 2. — GUDE, Fauna Brit. India Mollusca, ii, p. 299. The differences between this shell and Hypselostoma tubi- ferum Benson, hitherto the only known species of the genus, are numerous. That shell has the spire scarcely exserted, while the last whorl ascends so much that the mouth, which is horizontal is on a level with the apex. In the present species the spire is conical, the mouth nearly vertical, and the last whorl only ascends very slightly (Stanford) . "Some specimens in the Theobald collection measure: major diam. 3, min. 2, alt. 2 mm. (including the peristome) " (Gude). The angular and parietal lamellae are parallel, not converg- ing, both being rather short and slender. Infraparietal is minute, rather deeply placed. Columellar lamella rather small. Upper and lower palatal plicae are well developed, the lower somewhat larger. Basal fold small. The last whorl runs up more, and the free part is not so long as in G. hunger- fordianus. Fig. 12 is from Conchologia Indica, fig. 11 from a specimen in mus. A. N. S. 2. GYLIAUCHEN HUNGERFORDIANUS (Moellendorff). PI. 36, figs. 1-4. Shell rather openly umbilicate, turbinate, thin, corneous- brown, opaque. Whorls 4%, angulate-convex, separated by a much impressed suture, slightly striatulate, the upper form- ing a concave, turrited-conic spire with mamillar, slightly excentric apex. Last whorl having a projecting, rounded keel at the periphery, another more obtuse one at the umbilicus, encircled by lightly impressed spiral sulci above and below the peripheral keel; its last fourth free, running forward, slightly ascending, almost tetragonal in the free part, at the base spirally lineolate. Aperture nearly vertical, very slightly looking upward, rounded-quadrangular, contracted by seven lamelliform teeth within, of which four larger form a cross; GYLIAUCHEN. 213 parietal strong, deeply entering, bipartite ; between it and the columellar there are three smaller ones. Peristome free, simple, thin, rather broadly expanded, rather deeply sinuated between the two lamellae. Diam. max. 3, alt. 2%, diam. of aperture with peristome 1 mm. (Mlldff.). Perak: Bukit Poudong(R. Hungerford) ; Kelantan(Sykes). Hypselostoma bensonianum v. MLLDFF., Journ. Asiat. Soc. Beng., vol. 55, pt. 2, 1886, p. 306. — Hypselostoma hunger- fordianum v. MLLDFF., Proc. Zool. Soc., 1891, p. 337, pi. 30, f. 7, la. — SYKES, Journ. of Malacology, ix, p. 61. "Although I have not yet been able to compare authentic specimens of H. bensonianum Blfd. from Ava, I am convinced that the Perak form cannot be combined with it and that it constitutes a good new species. It is somewhat more conical and comparatively higher than the Ava form, the upper whorls are more convex, not 'planulate' as Blanford has it, the last whorl is more detached and stretches to the right; facing the shell the whole aperture is visible in H. bensonia- num, only part of it in H. hungerfordianum. There are seven instead of four teeth. I suppose that the additional fifth tooth mentioned by Blanford means that the parietal tooth or lamella is divided as in the Perak species, but the latter pos- sesses three more between the parietal and columellar lamel- lae" (Mlldff.). The angular lamella is very slender and runs close and parallel to the anterior part of the parietal (fig. 4). The two infraparietals are long and larger than the supracolumellar lamella. Upper and lower palatal plicae strong, some small interpalatals between them. In the basal position are one or more little plicae. All the lamellae and plicae are seen to be set with minute points. Under a low power they seem as if cov- ered with little sand grains. The surface is minutely and superficially rugose. Apex is minutely granulose. The peristome is flatly reflected along the columellar margin, the outer merely expanded. This species has a longer, less ascending neck and more de- veloped accessory plicae and lamellae than G. bensonianus. It is paler than G. transitans, has a longer neck, longer angular lamella and more teeth. 214 GYLIAUCHEN. Specimens from the limestone caves of Gunong Pondok- (pi. 36, fig. 1) have the scaly-granose sculpture strongly developed and the keel more pronounced. The figured specimen meas- ures, alt. 2, diam. 3 mm. Figures 2-4 are Perak specimens, probably of the original lot. 3. GYLIAUCHEN TRANSITANS (Moellendorff). PL 36, figs. 5-8. Shell umbilicate, turbinate, obliquely striatulate, brown. Whorls 4, convex, forming a conic spire with papillar apex; the last whorl a little distorted, not ascending in front, shortly free and produced forward, at the periphery encircled with a rather prominent crest, another smaller one at the umbilicus ; the base somewhat swollen, compressed around the umbilicus. Aperture slightly oblique, rounded-tetragonal ; peristome con- inuous, thin, expanded, hardly reflected. Parietal lamella rather strong, bifid in front; two teeth in the outer margin, one in the base and one on the columella. Diam. 2.75, alt. 2.66mm. (Mlldff.). Samui Is. (C. Eoebelen). Hypselostoma transit ans MLLDFF., Proc. Zool. Soc., 1894, p. 16, f. 12, 13. * ' This peculiar shell presents an especial interest, inasmuch as it forms a decided transition from Hypselostoma to the In- dian and Chinese Boysidia Ancey, of which Pupa hunanensis Gredl. is the type. As I have mentioned in the description of Hypselostoma hungerfordianum (P. Z. S., 1891, p. 338) the genus appears to be but an extreme development of the Boy- sidia type. Boysidia strophostoma Mldff. of South China shows already a slight distortion and detachment of the last whorl, which in the Samui species is much less developed than in the other forms of the genus. There can be no doubt, how- ever, that it belongs to Hypselostoma, with which it has the peculiar quadrangular shape of the last whorl and the denti- tion of the aperture in common. H. crossei Mor. of Tongkin seems to connect it with the other Malayan species" (Mlldff.). The angular lamella is quite short and parallel to the pari- etal, but distinct from it (fig. 5) ; the two palatal plicae are about equal, the basal plica much smaller. The last whorl is GYLIAUCHEN. 215 straight or even descends a little in front, and the aperture is a little oblique, the upper margin of the peristome advancing further than the lower, in this respect differing from the re- lated species, which look upward. In the somewhat similar G. crossei the lower margin is advanced, as usual. The surface is closely sculptured with short wrinkles, or they might be called long, irregular, coarse granules. The first whorl is distinctly granulous. This sculpture is only visible under the compound microscope. The original figures are reproduced in figs. 6 and 7. The Samui Islands, in the Gulf of Siam, are a small group south of Bangkok and situated near the coast of the Malay Peninsula at its narrowest part. It consists of several small islands, the largest of which is called Samui. The rock seems to be calcareous throughout. 4. GYLIAUCHEN STRIOLATUS (Moellendorff). Owing to the bad state of preservation of the two speci- mens of this form, quite distinct from the preceding one, I cannot give a complete description of it. Its last whorl is much more detached than in H. transitans and distinctly bent upwards, and shows very distinct though minute spiral lines. The diameter is only 2.5 millim. It belongs to the group of H. bensonianum and H. hungerfordianum (Mdllff.). Hypselostoma striolatum MLLDFF., Proc. Zool. Soc. Lond., 1894, p. 152. Samui Is. (Roebelen). 5. GYLIAUCHEN CROSSEI (Morlet). PL 36, figs. 9-13. Shell perforate, conic, of irregular form, small, thin, brown, sometimes lineolate with white, radially, delicately striate. Spire acute; whorls 5, rapidly increasing, separated by a channelled suture, the first smooth, prominent, papillar; the last partly free, carinate in the middle, channelled below and around the umbilicus, subtrigonal, at the end forming a tube. Aperture subtrigonal or subquadrangular, reflexed, brownish, somewhat channelled above, denticulate deep within, the teeth numerous, acute, unequal (4 or 5 larger ones). Umbilicus narrow, deep, angulate at the periphery. Peristome thin, a 216 GYLIAUCHEN. little reflected. Diam. maj. 4%, min. 3, aperture 2 mm. long and wide (Morlet). Tonkin: montagne de 1 'Elephant (Jourdy). Hypselostoma crossei MORLET, Diagn. de Mollusques terr. et fluv. du Tonkin, 1885, p. 2; Journ. de Conchyl., vol. 34, 1886, pp. 259, 275, pi. 12, f . 5-5c. — Hypselostoma crossei subsp. endodonta and 'brevituba MLLDFF., Nachrbl. D. Malak. Ges., 1901, p. 76. This species is distinguished by its dark color, thickened peristome and numerous accessory teeth. Two of Morlet 's figures are copied, pi. 36, figs. 9, 10. Specimens from near Haiphong, received from M. Dautzen- berg, are drawn in pi. 36, figs. 11-13. The color is dark vina- ceous-brown or almost chocolate, uniform or with some whitish lines, the spire paler, more tawny; the aperture being vina- ceous-russet. There are 4% whorls, at first strongly convex, the penult less so. The last whorl is convex below the suture, in its last half either strongly or weakly excavated above the strong peripheral angle ; also within the rounded angle which bounds the umbilicus. The neck ascends a little and is nearly circular in section, but the supraperipheral furrow persists, also one above the parietal wall. The length of the free neck varies; it is often very short. The aperture looks upward a little, and when most fully toothed has: a small, narrow but long angular lamella, which bears a whitish lump near its outer end; a strong high and straight parietal lamella; two low, obtuse, rather long infraparietal lamellae ; a horizontally entering, downward-bent columellar lamella (all of these shown in fig. 11) ; a small supracolumellar above the columel- lar, and one or two below it. The basal region is occupied by two or three minute plicae; upper and lower palatal plicae well developed, the lower larger, as usual ; between them, and above the upper, there are several inter- and suprapalatal plicae, the latter often continuing as far as the angular. The angular, parietal and columellar lamellag, upper and lower palatal plicae are constant, but the number of small accessory teeth varies with every specimen. All of them are set with many short points or prickles. The peristome is widely re- GYLIAUCHEN. 217 fleeted, thin at the edge, and rather strongly calloused within, the teeth being placed further inward than the callous. Alt. 2.75, greatest diam.. 3.6 mm. Alt. 2.55, greatest diam. 3.5 mm. 5a. G. c. endodonta Mlldff. Umbilicus a little wider, spire a little less elevated, apex more oblique, last whorl a little less free, teeth much more deeply placed. Diam. 3.4, alt. 2.3 mm. (Mlldff.). Tonkin: Lang-son (Fruhstorfer). 5&. G. c. brevituba Mlldff. Last whorl very much more shortly free, spire higher. Diam. 3.1, alt. 2.5 mm. (Mlldff.). Series of G. everetti. Surface spirally striate ; space between the upper and lower palatal plica? flat, not excavated. 6. GYLIAUCHEN PRUHSTORFERI (Moellendorff). PL 37, figs. 1, 2,3. Shell narrowly umbilicate, irregularly trochiform, rather solid, somewhat pellucid, delicately striatulate, decussated with very fine, extremely close but distinct spiral lines, opaque, brown. Spire rather high, subregularly conic. Whorls 41/2, very convex, separated by a deep suture, the last angular in the middle, then flattened, angular again around the umbil- icus, moderately ascending in front, shortly free, contracted behind the aperture, then bell-shaped. Aperture slanting backward, rounded-pentagonal; peristome continuous, nar- rowly spreading. Two parietal lamellae, the angular nearly reaching the margin, the other receding, strongly elevated; columellar deep; 6 palatals, of which two are larger, long, opposite to the parietal and columellar lamellae, in form of a cross. Diam. 2.5, alt, 2.25 mm. (Mlldff.). Java (Fruhstorfer). Hypselostoma fruhstorferi MLLDFF., Nachrbl. d. Mai. Ges., vol. 29, June, 1897, p. 70. It is more elevated than everetti and dohertyi, darker, more 218 GYLIAUCHEN. minutely striate spirally, not excavated below the periphery, and has a smaller umbilicus. A certain latitude of variation is to be expected in the secondary denticles in all Pupillidae, but fruhstorferi has more than its immediate allies. The inner half of the long angular lamella is quite low. Columellar lamella and upper and lower palatals are sub- equal, all long and straightly entering. In the specimen fig- ured the secondary or minor teeth are as follows: a rather well-developed infraparietal ; small supra- and subcolumel- lars ; two small folds in the base, one interpalatal, and several minute ones in the sinulus. All of the lamellae and plicae are microscopically spiniferous. The color is prussian red or somewhat lighter, being darker than the related species. Apex is minutely granulous, the subsequent whorls delicately striate spirally, the spiral threads much finer and closer than in everetti. Alt. 2.1, diam. 2.5 mm. 7. GYLIAUCHEN EVERETTI (E. A. Smith). PL 37, figs. 4-6, 10. Shell minute, openly, perspectively umbilicate, brown, minutely decussated with growrth and spiral striae; spire small, elevated. Whorls 4, convex, separated by a deep suture, the apical large, last whorl concave about the middle, obtusely angular above and around the umbilicus, free and ascending in front, pitted towards the aperture. Aperture tube-like, armed with several teeth within ; peristome pale reddish, thin, expanded, triangular-rounded. Diam. maj. 3, min. 2, alt. 1^ mm., aperture 1 mm. wide (Smith). Kalao Island, between Celebes and Flores (A. Everett). Hypselostoma everetti SM., Ann. and Mag. N. H. (6), xviii, August, 1896, p. 148, pi. 10, f. 9-9&. "In a natural condition all the shells are covered more or less with agglutinated earth, which produces a rough irreg- ular appearance. There are five principal converging teeth within the aperture, and a few smaller intermediate ones, none reaching to the edge of the labrum. "A species from Java in the British Museum labeled E. Fruhstorfer Bttgr. somewhat resembles the present form; it GYLIAUCHEN. 219 is, however, larger, has the last whorl less freely produced, is keeled at the middle, and the spire is more elevated" (Smith). The angular lamella is very long, reaching nearly to the edge of the lip ; parietal also long but deeply immersed, its front end projecting shortly in front of the inner end of the angular. Upper and lower palatals and columellar lamella are about equal. The large, vinaceous-russet or pale brown first whorl is beautifully granulose, the later whorls having strong spiral threads crossed by irregular, lower growth- wrinkles. Alt. 1.5, diam. 2.7 mm. or somewhat smaller. It is a remarkable little shell. Mr. Smith's figure (copied in fig. 10) represents one of the lowest examples. Some others are higher, as in fig. 5. It is closely related to the following species. 8. GYLIAUCHEN DOHERTYI (Fulton). PL 37, figs. 7, 8, 9. Shell dextral, triangular, umbilicus deep and moderately wide, almost smooth; whorls 4, first three small, convex, body- whorl large, somewhat depressed in the center and keeled above and below, slightly ascending; interior of aperture armed with five teeth, two on parietal wall, two palatal teeth, and one on the columellar side of the aperture; peristome subcircular, expanded, continuous. Diam. maj. 2.75, alt. 2 mm. (Fulton). Tenimber Island (Wm. Doherty). Hypselostoma dohertyi FULTON, Proc. Malac. Soc. Lond., iii, March, 1899, p. 215, pi. 11, f. 17. Allied to H. everetti Smith from Kalao Island, but this species is narrower, the aperture does not project so far from the body-whorl, it is more closely coiled below, and is not per- spectively umbilicated (Fulton) . The aperture has a triangular, somewhat trefoil shape. The angular lamella is long, but the inner half is quite low ; it does not reach nearly to the edge in front. Parietal lamella long and straight. The columellar lamella and upper palatal plica are about equal, the lower palatal somewhat longer ; all enter directly. There are quite small basal, subcolumellar and infraparietal teeth, and some smaller ones on the borders 220 AULACOSPIRA. of the sinulus. All of these small accessory teeth are probably variable in development. All of the teeth are minutely spinif- erous, especially the smaller ones. The external sculpture resembles that of G. everetti, but the spiral threads are not so conspicuous, though rather coarse, and growth-striae are hardly noticeable. Figured from co- types, one of which measures, alt. 1.8, greatest diam. 2.55 mm. It differs from G. everetti chiefly in the base, as indicated by Mr. Fulton. Compare figs. 4 (everetti) and 7 (dohertyi). THE AULACOSPIRA AND SYSTENOSTOMA GROUP. The lamellas and folds, when least decadent (as in Aulaco- spira azpeitiae), are unmistakably of Gastrocoptid type; but in most of the species there has been more or less reduction of the armature, terminating in toothless species. The last whorl often turns a little towards the axis, and more or less downward. This contrasts with Boysidia and Hypselostoma, in which there is more or less straightening of the last whorl, which tends to a tangential direction, and in the more evolved forms the aperture looks upward. This an- tithesis appears to indicate that Hypselostoma and related genera on the one hand, Aulacospira and Systenostoma on the other, form two collateral phyletic series in the Gastrocoptin having a twisted appearance, rounded, regularly increasing, separated by a deep suture, the last of moderate size, a little convex, slightly flattened near the peristome outside, tapering below, straightened above at the insertion. Aperture oblique, subovate, 6-lamellate, as follows: 2 parietal lamellae, one minute at the insertion, the other median, more deeply placed ; 2 columellar lamellae, the lower one very minute ; and 2 pala- tals, rather remote, and not reaching the margin. Peristome whitish, acute, lightly spreading throughout ; columellar mar- gin dilated in triangular form and expanded above the um- bilical crevice ; margins strongly approaching. Alt. 4, diam. iy2 mm. (L.&B.). GRANOPUPA. 349 Tunis: 011 damp rocks near the spring, Djebel Zaghouan (Let.). Pupa punka LETOURNEUX et BOURGUIGNAT, Prodrome de la Malacologie terr. et fluv. de Tunisie, 1887, p. 107. This species, of the series of Pupa avenacea, is distinct from all the Pupas of this series. It is not without points of resemblance in size and form with P. cartennensis (Letour- neux, 1884) of the mountain of Tenez, in Algeria; but that has a wholly toothless aperture (L. & B.). 10. GRANOPUPA BARATTEI (Let. et Bgt.). Shell minute, narrowly perforate; oblong-subconoid, not tapering downward, but stouter, ventricose; fragile, subdi- aphanous, corneous; obliquely striatulate. Spire long, regu- larly tapering but obtuse at the summit, the apex very obtuse, large, flattened above. Whorls 5%, rounded, regularly in- creasing, separated by a deep suture, the last whorl convex, rounded below, straightened at the insertion. Aperture ob- lique, subovate, four-lamellate as follows: two punctiform parietal lamella?, of which the upper is at the insertion, the lower deeply placed and median; one columellar lamella, above, denticle-like ; palatal lamella also single, very obsolete. Peristome paler, fragile, spreading throughout; columellar margin dilated and expanded ; margins approaching. Alt. 4, diam. 2 mm. (L. & B.). Tunis: in crevices of the rocks, Djebel Bou-Kournein (Let.). Pupa barattei LETOURNEUX et BOURGUIGNAT, Prodr. Malac. Tunisie, 1887, p. 108. This Pupa, of the same series as the preceding, is distin- guished from that not only by the denticles of the aperture, but also by the subconoid form, swollen and not tapering at the base, by the whorls not being twisted, the last one, more convex, is well rounded in its lower part (L. & B.}. 11. GRANOPUPA DUPOTETI (Terver). PL 47, figs. 7, 8. Shell very small, swollen, conic, corneous, most minutely striate, umbilicate; aperture subrotund, toothless; 5 rounded whorls; suture deep; peristome simple, subreflected. Length to 2 lines, diam. 1 line (Terver). 350 GRANOPUPA. Shell small, perforate and arcuately rimate, conic, tliin, cin- namon-brown, glossy, very lightly irregularly striate. Spire conic, the apex obtuse. Whorls strongly convex, the last rounded below, very slightly and slowly ascending in front. Aperture shortly oval, slightly oblique, without teeth; peri- stome thin, whitish, the terminations approaching, the colu- mellar margin dilated, other margins unexpanded, connected by a short, thin parietal callous. Length 4, diam. to edge of lip 2 mm. ; 4% whorls. Algeria: Bougie; between the blockhouse of Kalifa and Fort Clausel ; rocks above Si-Aya-Bosgri ; near Fort Bonack, etc. (Dupotet) ; around Bone (Letourneux) ; Cime de Bou- Mecid, near Constantine (Raymond, Brondel). Sidi-Yahia. Gorges of the Isser, Kabylia (Letourneux). Vertigo dupoteti TERVER, Cat. Moll. terr. et fluv. nord de 1'Afrique, 1839, p. 32, pi. 4, f. 11.— PFR., Monogr., iv, 664 — BOURGUIGNAT, Malac. de 1'Algerie, ii, p. 96, pi. 6, f. 25-27. — LETOURNEUX, La Kabylie, p. 228. — ? Pupa dupontii PAETEL, Catalog, p. 107. — Pupa rupestris ROSSMAESSLER, Iconogr., pts. ix and x, 1839, p. 25, 44, pi. 49, f . 637 ; not of Philippi. M. Dupotet observed only two tentacles, those bearing the eyes. They are quite short; the animal is light-er or darker gray, sometimes nearly black. Bourguignat notes that the examples from Bone and Bou- Mecid are ordinarily plicatulate-striate, while those from the environs of Bougie are more usually minutely striatulate. His figure (copied in pi. 47, fig. 7) agrees well with that of Ter- ver, and shows the margins of the peristome converging less than in the specimen drawn in fig. 8. In younger individuals the margins approach less and the parietal callous is longer than in the old of the same lot. "Westerlund 's phrase "Marg. distantibus, non conniventi- bus" is inexact for adult shells. Bourguignat described the structure better: "bords marginaux tres-rapproches, conver- gents et reunis par une f aible callosite. ' ' 12. GRANOPUPA EUCYPHOGYRA (Let.). PL 47, fig. 6. Shell openly perforate, long-conic, subpellucid, glossy, cor- GRANOPUPA. 351 neous, obliquely and sharply striatulate; spire acuminate, long, the apex large, obtuse, smooth. Whorls 6, swollen, reg- ularly increasing, separated by a deep suture, the last turgid- rounded, slightly ascending, equal to one-third the height. Aperture nearly vertical, slightly lunate, subrotund; peri- stome unexpanded, subacute, slightly thickened, the columel- lar margin expanded, margins strongly approaching. Length 4, diam. 2 mm. (Let.}. Algeria : under rocks of a dolmen of the defile of Mazla, in the region of the Oued-Zenati (Let.). Pupa eucyphogyra LETOURNEUX, Annales de Malacology, i, 1870, p. 311, pi. 6, f. 8-10. This species has more whorls and a longer spire than dupo- teti, with which it agrees in having a toothless aperture. Pupa papicri Hagenmiiller MS., from Cap de Garde a Bone, and Pupa- octavia Hagenmiiller MS. in coll. Fagot, are unde- scribed forms related to eucyphogyra, according to Caziot and Fagot, Ann. Soc. Linn, de Lyon, vol. 53, 1907, p. 197. Sicilian Species. 13. GRANOPUPA RUPESTRIS (Phil.). PL 49, figs. 1, 2, 3, 6. Shell two lines long, a little over one wide, conic-turrited, the apex obtuse, ornamented with elevated striae, reddish brown, pellucid. Whorls 5y2 to 6, very convex, swollen, the last largest. Aperture obliquely ovate, more than half the length of the spire; lip simple, not reflected, the extremities approaching; umbilical fissure large and deep (Phil.). The first wrhorl is large, projecting, and turned in at the tip. The last whorl ascends a little towards the lip. The surface has a golden gleam, and is sculptured with riblets which be- come a little more widely spaced on the last whorl. The outer lip is unexpanded, columellar lip dilated. There are no traces of apertural teeth. Length 4, diam. 2.2 mm. ; 5% whorls. Length 4.3, diam. 2.3 mm. ; 5 whorls. Sicily: Palermo, Sciacca (Phil.); Monte Pellegrino near Palermo; Termini, Monte S. Calogero (Benoit) ; island of Ustica; il Pirajno sulle Madonie (Calcara) ; also Siracusa, 352 GBANOPUPA. Mazzara and island of Maretimo, the specimens larger and dark chestnut (Benoit). Bulimus rupestris PHILIPPI, Enumeratio Molluscorum Sici- liae, 1836, p. 41, pi. 8, f. 18. — Pupa rupestris Phil., EOSSM., Iconogr., ii, pt. x, p. 25, in part. — PHILIPPI, Enum., ii, p. 113. — KUESTEB, Conch. Cab., p. 19, pi. 3, f. 1-3. — PFR., Monogr., ii, p. 310. — BENOIT, Illustr. sist., crit., iconogr. Testae, estra- mar. SiciL, pi. 5, f . 36 ; Nuovo Catal. Conch, terr. e fluv. Siei- lia, 1881, p. 95. — Pupa (Rupestrella) rupestris Ph., MONTE- ROSATO, II Nat. Siciliano, xiii, 1894, p. 170 (Monte Pellegrino), — Pupa rupestris var. b, A. BIVONA, Nuovi Moll. terr. e fluv. Palermo, 1839, p. 19, fig. 9. Not Pupa rupestris Studer, var. conica Ben., DE GREGORIO, II Nat. Siciliano, xiv, p. 204, error for Helix rupestris conica Benoit. This species is much more strongly ribbed than the Algerian dupoteti, with which some authors confused it. It appears from the records to be widely spread in Sicily ; but there are several varieties which require local study. The typical form (pi. 49, fig. 6) is 4 mm. long or slightly larger, rather finely rib-striate, with about 5^2 whorls. G. rupestris coloba n. subsp. PL 49, fig. 4. A smaller form, length 3.1, diam. to edge of lip 1.8 mm., 5 whorls; more coarsely striate. There is also a form with far less convex whorls (pi. 49, fig. 2), which may possibly be a different species. 14. GRANOPUPA HOMALA (West.). Shell rimate-perf orate, ovate-conic, reddish-brown, rather obsoletely, obtusely costulate; spire broadly conic. "Whorls 51/2, convex, separated by an impressed suture, regularly in- creasing, the last whorl a little larger than the penult, not swollen, rounded at the base, and ascending a little in front. Aperture ovate, toothless, the margins joined by a very thin callous; columellar margin lightly arched, the outer margin strongly curved above. Length 5, width 2% mm. (West.). Sicily: Monte Galdo (M. de Monterosato) . Pupa (Torquilla) homala WESTERLUND, Nachrbl. d. m. Ges., 1892, p. 192. — Modicella homala WEST., Synopsis, p. 102. GRANOPUPA. 353 Most nearly related to rupestris Phil., which however has a far more slender, narrower and strongly twisted spire, with deeper, gutter-like suture and very convex whorls ( West. ) . 15. GRANOPUPA OCCULTA ('Parr.' Rm.). PL 49, figs. 5, 7, 8, 9. Shell small, scarcely rimate, fusiform-turrited, light cor- neous-brown, thin, translucent, lusterless, rib-striate. Whorls 5-6, convex, the last noticeably larger than the penult, scarcely as large as the others together. Suture deep. Aperture ovate, somewhat higher than wide ; throat with 3 fold-like teeth, one each on columella (the largest), on the palate, and on the parietal wall. Lip-margins approaching. Length 2*4, width 1 line (Rossm.). Sicily: campagna di Palermo, rare (Benoit). Pupa occulta Parr, in litt., ROSSMAESSLER, Iconogr., ii, pt. 10, 1839, p. 25, pi. 49, f. 638.— PHILIPPI, Enum. Moll. Sicil., ii, p. 114.— KUESTER, Conch. Cab., p. 18, pi. 2, f. 25, 26.— PPR., Monogr., ii, p. 349. — BENOIT, Nuovo Catal. Conch, terr. e fluv. Sicilia, 1881, p. 94; 111. Sist., crit., icon., etc., pi. 5, f. 35 (copy from Rossm.). — ?? Pupa (Torquilla) occulta Rossm., WESTER- LUND, Nachrbl. d. m. Ges., 1892, p. 193 ; Synopsis, 1897, p. 103. Rossmaessler's figures are copied in pi. 49, figs. 7, 8. The shell is much like rupestris in shape and sculpture, but differs by having teeth — parietal, columellar and lower palatal. In the specimen figured on pi. 49, fig. 9, the palatal plica is obsolete, but there is a slight thickening in its place; length 4.7, diam. over all 2.4 mm. ; 6 whorls. PL 49, fig. 5, represents a smaller example, length 3.5, diam. 2 mm., 5% whorls, in which only a columellar lamella is de- veloped, though the shell appears to be adult. It is transi- tional to rupestris. Westerlund's new diagnosis (1892) appears to apply to some other form, not to typical occulta. 16. GRANOPUPA SCALARIS (Ben.). PL 48, figs. 1, 2, 5, 7, 8. A small and elegant shell, rimate, fusiform, rather fragile, of a yellowish color; spire with the summit obtuse; whorls 6 in number, obliquely and equally ornamented with riblets, the 354 GRANOPUPA. elevation of which, in combination with the depth of the suture, renders the whorls obtusely carinate. Aperture ovate- elongate, with a distinct tooth on the wide columella ; peristome simple, somewhat reflected above the place of the umbilicus; margins approaching. Length 4, diam. 1% mm. (Benoit). Sicily: campagne di Palermo and in Madonie (Benoit). Pupa scalaris BENOIT, Nuovo Catalogo Conch, terr. e fluv. Sieilia, 1881, p. 96; Illustr. Sist., Grit., Icon., pi. 5, f. 37.— P. scalaris (Parr.) Essm., WESTERLUND, Fauna, iii, 1887, p. 105. — Modicella scalaris Ben., WESTERLUND, Synopsis, 1897, p. 103, with var. albidocostata. — Pupa scalarina Gundlach, Sow- ERBY, Conch. Icon., xx, 1875, pi. 17, f . 153 ; not of Gundlach ! — ?P. occulta v. scalarisca PAETEL, Catal. der Conchylien- Sammlung, 1873, p. 108 (name only). This peculiar little snail is distinguished by the scalariform spire of extremely convex whorls separated by a deep, wide sutural excavation ; also the coarse costation. It recalls Pineria or Spiraxis mirabilis. The shell is typically light brownish, between honey-yellow and isabella color, with lighter or whitish ribs ; but some lots are darker, cinnamon-brown, the pale ribs therefore more con- trasted (fig. 2). This form has been named var. albidocostata West. : * * shell strongly, distantly ribbed, ribs whitish ; length 51/2, diam. 214 mm." Prof. Gwatkin placed this species among those having teeth of the Chondrina megacheilos type ; yet as there are certainly several mistakes in his lists, I leave scalaris in the same group with rhodia until the difference is confirmed. The post-embryonic whorls are very strongly swollen in the middle, contracted towards the sutures. The median ridge often becomes lower on the last half of the last whorl, where a spiral furrow runs below it. Sculpture of well-spaced oblique ribs. The aperture is oblique, outer lip thin and scarcely ex- panded, columellar margin dilated, as usual in the group. There is a short but rather strong entering tooth-like lamella on the columella, and a smaller one on the parietal wall ; both are often so far immersed that they scarcely appear in a direct front view (pi. 48, fig. 5) and this was apparently the case in GRANOPUPA. 355 the specimen figured by Benoit. The parietal lamella is de- veloped only in fully adult shells, is sometimes very small, and in some apparently adult shells is wanting. The palatal region shows a more or less conspicuous ridge corresponding to the external furrow. Very often a small white fold stands upon this ridge, though not in all adult shells; and the type of Benoit was without it. Specimens of full size and in the same lot may therefore be found with one, two or three teeth. Length 5.5, diam. 2 mm. ; 6y2 whorls. Length 4.5, diam. 2.1 mm. ; 5% whorls. P. gibilfunnensis, which I have not seen, does not appear to differ from the more fully toothed examples of scalaris, yet it may be a distinguishable race. Sowerby's Pupa scalarina, which he got tangled up with a Cuban Cerion, is the triden- tate form of scalaris. Westerlund's diagnosis of occulta (Nbl. d. m. Ges., 1892, 193) reads a good deal like scalaris. Var. (?) gibilfunnensis (De Greg.). — "A small, elegant, very characteristic species. It is of an earthy color, orna- mented with marked, laminar, oblique riblets. That which characterizes and distinguishes it from other related forms is : (1) the shape of the whorls, which are (especially the penult) extremely convex in the middle, constricted anteriorly and posteriorly, in such manner that they are carinate. (2) The arrangement of teeth in the aperture, of which there are two rather large on the columellar side, one rather slender on the outer lip. This last tooth is much less conspicuous, situated within, and sometimes transformed into a fold, or a slight protuberance ; it corresponds to a concavity of the outer side of the whorl, which is continued spirally to the outer lip, in which it frequently produces a sinuosity. "This species is related to scalaris Ben. (111. Sist., pi. 5, f. 37; Nuovo Cat., p. 96) and also philippii Cantr. (Ben., 111. Sist., pi. 5, f. 38), but is quite distinct from both by the shape of the whorls and by the tooth of the outer lip ' ' (Pupa gibil- funnensis De Gregorio, II Naturalista Siciliano, xiv, Sept. 1895, p. 204). Sicily: Monte Gibilfunni, near Palermo (De Gregojio). 17. GRANOPUPA BEPUGA (West.). Very similar to Pupa rupestris Phil., but the shell is more slender, more distantly and more strongly ribbed, the riblets 356 GEANOPUPA. obtuse; last whorl not inflated; aperture oblong-oval; and especially distinct by the strong, white, transverse fold on the upper part of the columella ( West. ) . Sicily: Palermo (Westerlund). Pupa (Torquilla) refuga WESTERLUND, Nachrbl. d. m. Ges., 1892, p. 192 ; Modicella refuga WEST., Synopsis, p. 102. As this species has not been figured, and no dimensions are given, its identification is not without hazard. However, the description, as far as it goes, applies to a variable species which is rather common in the Palermo district, drawn in pi. 49, figs. 10 to 14. The shell is cinnamon-brown to chestnut-brown, turrited- conic; whorls strongly convex, the penult conspicuously in- flated (sometimes even obtusely subangular), last whorl less inflated, its latter half somewhat flattened or even sulcate below the periphery. Sculpture of coarse, somewhat irreg- ularly spaced, oblique ribs. Aperture having: (1) a rather strong but short lamella high on the columella, fig. 11; (2) the same, with a smaller or minute parietal lamella, fig. 14; (3) columellar and parietal lamellae and a palatal plica, figs. 12, 13. These tooth-varieties occur in the same lots as received. The parietal lamella is often extremely small. Length 5, diam. 2 mm.; 6 whorls (fig. 12). Length 4.3 mm. ; 5% whorls (fig. 14) . This form is most closely related to scalaris, with which it may, indeed, prove to intergrade ; but the median inflation of the whorls is less marked in refuga, not conspicuous except on the penult whorl. G. occulta has much more regular form and closer striation. Pup. [a] unicarinata Potiez et Michaud, Galerie des Mol- lusques Mus. de Douai, i, 1838, p. 175, pi. 17, f. 11, 12, of Sicily, was evidently a shell of the occulta or refuga kind, scarcely to be identified without reference to the type. Wes- terlund has included it in his Fauna with an abstract of the original description, but it has never been identified with a real shell. Fortunately the name was previously used by Lamarck (see vol. xvi, p. 132)", so the species may be dropped.. APPENDIX. GASTROCOPTA PERVERSA (Sterki). PL 46, fig. 13. Page 40. Several dextral specimens were found in the drift debris of the Salt River, Tempe, Arizona, by Ferriss, Daniels and Pilsbry in 1910. The normal form occurs in the same deposit. We do not know whether these represent a dextral colony or race, or are merely "accidental," but in consider- able lots from other localities gone over, all are sinistral. These dextral shells may be known as G. perversa, form sana (pi. 46, fig. 13). GASTROCOPTA PROCERA DUPLICATA Sterki (p. 65). This name being preoccupied, becomes G. p. sterkiana Pils. (p. 127). GASTROCOPTA WOLFH (Miller). Page 94. GASTROCOPTA MUNITA (Reibisch). Page 96. In Proc. Biological Soc. Washington, vol. 30, p. 10, Jan. 22, 1917, Dr. Dall writes: "Paul Reibisch described a species of Pupilla under the name of wolfi which he supposed to be the same as the P. ivolfi of Miller, originally from Guayaquil on the mainland. Dr. Pilsbry informs me that the Galapagos species is not the same as the continental wolfi, and therefore I propose for it the specific name REIBISCHI. Reibisch 's P. clausa and P. munita seem sufficiently distinct." The facts appear to be: Herr Reibisch did not describe PupUla wolfi, but he figured a specimen of Pupa wolfii Miller, from the Province of Guayaquil, for comparison with his new Pupa munita from the Galapagos. There appears to be no reason for doubting, and I have never doubted, that Pupa wolfii Miller was correctly identified by Reibisch. (357) 358 APPENDIX GASTROCOPTA. Dr. Ball's new name [PupUla] reibischi, being based upon "the Galapagos species," becomes, I presume, a synonym of Gastrocopta munita (Reibisch) ; or, if it is held to be based upon Reibisch 's pi. 2, fig. 11, it will be a synonym of Gastro- copta wolfii (Miller), of Guayaquil. Pupa wolfii has been reported from the Galapagos only by Dr. Dall, and all of his specimens, which he courteously per- mitted me to examine, are P. munita of Reibisch. There is at present no evidence that P. wolfii exists on the Galapagos. Having carefully compared long series of munita, from sev- eral islands of the Galapagos group, with Guayaquil Province wolfii, I found them constantly distinct. See last paragraph on p. 96 of this volume. Dr. Dall 's note was doubtless written before he had seen the account in this volume, pp. 95, 96, published Dec. 18, 1916, where the status of the species involved is sufficiently exposed. I fear also that there may have been some ambiguity in my letter to him on the subject — in which case the error here corrected must have been due to my own vagueness. Certainly I intended to convey the conclusions stated on pp. 94-99, which had just then been written. G. wolfii sometimes has a very low swelling behind the outer lip, though typically there is none. Page 120. The following species is to be inserted after G. pleimesi: 65%. GASTROCOPTA HAGGENMACHERI (Jick.). Shell rimate, cylindric-ovate, white, glossy, diaphanous, under the lens obsoletely striated longitudinally, covered with dirt; spire somewhat tapering, the apex obtuse. Whorls 5, slightly convex, separated by a rather impressed suture, the last equal to one-third of the length, a little compressed at base, with a bifid sulcus. Aperture rounded, 6-plicate : a fold on the parietal wall divided by a deep sinus, the anterior part forming a minute denticle ; 2 columellar folds, the lower one situated on the angle between columellar and basal margins; 3 palatal folds, the upper one punctiform, the middle and APPENDIX — GASTROCOPTA. 359 lower joined together. Peristome a little expanded, the mar- gins converging. Length 1%, diam. maj. 1 mm. (JicUeli). Abyssinia : Habab, on Nakfa, in the gorge of Asqaq. Pupa haggenmacheri JICKELI, Fauna der Land- und Siiss- wasser-Mollusken Nord-Ost-Afrika's, in Nova Acta Acad. Caes. Leop.-Carol. Germ. Nat. Cur., vol. 37, 1875, p. 118. It is readily distinguished from the preceding [Pupa kliw- zingeri and Pupa pleimesi] by the more compressed shape, and further differs from P. klunzingeri by the second colu- mellar fold and the third palatal fold ; from P. pleimesi by the absence of a second denticle on the parietal wall (Jicketi). The single specimen found was broken in measuring. It has not been figured. GASTROCOPTA DAMARICA (Ancey). Page 125. A specimen of the form described as Pupa ridibunda M. & P., from Cradock (Farquhar) is drawn in pi. 46, fig. 12. It differs from the specimens of damarica already figured by being decidedly more sharply striate, and by having the lower palatal fold somewhat larger, entering more deeply, or in some specimens more immersed as a whole. The peristome is con- tinuous, as a thin, slightly raised ledge, across the parietal wall, while in typical damarica it is very short and adnate. Length 2.1 mm. These small differences will probably not prove constant enough for recognition of ridibunda as a sub- species, but this point can be determined only by the examina- tion of long series. GASTROCOPTA (?) INSULSA (Preston). The figures of Ennea insulsa Preston, Proc. Zool. Soc. Lon- don, 1913, p. 205, pi. 33, figs. 13, 130, from Gazi, British East Africa, are so similar to Gastrocopta damarica in shape, size and teeth that I suspect a mistake in the genus. As I have not seen the shell, and nothing is said of its texture, the ques- tion is left to those having access to specimens. P. 179. TONKINIA MIRABILIS Mab. This species has been shown to belong to the Streptaxidce, in which TonUinia is a valid genus. See Kobelt and Von Moellendorff, Monograph of Streptaxida in Krister's Conchylien Cabinet. 360 APPENDIX GASTROCOPTA. P. 182. HYPSELOSTOMA INSULARUM Pils. The reference to figures should be : PL 32, figs. 1 to 5. P. 184. M. I. major Mlldff. Reference to figure should be : PI. 32, fig. 9. P. 184. H. I. imbricata Mlldff. Reference to figures should be : PL 32, figs. 10, 11, 13. P. 185. HYPSELOSTOMA QUADRASI Mlldff. Reference to fig- ures should be : PL 32, fig. 6. EXPLANATION OF PLATES. Except when stated otherwise, the specimens figured are in the collection of the Academy of Natural Sciences, and were drawn by Miss Helen Winchester. FIGURE PAGE PLATE 1. Gastrocopta. I. Gastrocopta armifera Say. Type specimen 15 2-4. Gastrocopta armifera Say. Germantown, Philadel- phia. 73876 15 5. Gastrocopta a. affinis St. Evansville, Wis. 98273 . . 18 7. Gastrocopta a. similis St. Rose Hill, Ont. 98272 ... 17 7-9. Gastrocopta a. clappi St. Knoxville, Term. 98279.. 20 10. Gastrocopta a. ruidosensis Ckll. Ruidoso, N. M. 73944. 19 II. Gastrocopta a. ruidosensis Ckll. Gallinas Cn., N. M. 84465 19 PLATE 2. Gastrocopta. 1, 3. Gastrocopta armifera abbreviata St. Eastport, Iowa. 98270 18 2. Gastrocopta a. abbreviata St. Shawnee Co., Ks. 11639. 18 4-6. Gastrocopta holzingeri St. Joliet, IU. 47545 25 7. Gastrocopta h. agna P. & V. Trinidad, Colo. 93052 . . 26 8. Gastrocopta contracta peninsularis Pils. Crystal R., Citrus Co., Fla 24 9, 12. Gastrocopta contracta Say. Troy, N. Y 22 10. Gastrocopta contracta Say. Fairfax Co., Va. 101573. 22 11. Gastrocopta contracta Say. Washington, D. C. 11607. 22 PLATE 3. Gastrocopta. 1, 4. G. contracta climeana Van. Type. 97605 24 2, 3. G. pentodon Say. Lebanon Springs, N. Y. 68885.. 28 5. G. pentodon Say. Ventnor, Atlantic City, N. J. 104640. 28 6. G. pentodon Say. Ocean City, N. J. 72709 28 7. 8. G. pentodon Say. Troy, N. Y. 58251 28 9. G. p. tappaniana Ad. Philadelphia, Pa. 58224 33 (361) 362 EXPLANATION OP PLATES. FIGUKE PAGE 10, 12. G. pilsbryana St. Oak Creek, Arizona. 79413... 34 11. G. pilsbryana St. S. Catalina Mts., Ariz. 109656. . . 34 PLATES 4, 5. Gastrocopta pentodon and varieties. Explanation of figures 1-41 on page 32; figs. 42-53, on page 34. PLATE 6. Gastrocopta. I, 2, 8. G. cochisensis P. & F. Tanner canyon. Huachuca Mte. 97442 44 3. G. cochisensis P. & F. 109679 44 4. G. cochisensis P. & F. Santa Rita Mts. 78693 44 5. G. ashnrani St. Dragoon Mts., Ariz. 112381 41 6. 7. G. ashmuni St. Dragoon Mts., Ariz. 112383 41 8. G. cochisensis P. & F. Huachuca Mts., Ariz. 97442. . 44 9, 10. G. perversa St. Benson, Arizona. 112063 40 II. G. perversa St. Dragoon Mts., Ariz. 112390 40 PLATE 7. Gastrocopta. 1-5. G. prototypus Pils. Cotypes. 82823 47 6, 7. G. basidentata Pils. Type. 190017 U. S. N. M 48 8-11. G. oligobasodon P. & F. Ash canyon, Chiricahua Mts. 97444 46 PLATE 8. Gastrocopta. 1-4. G. bilameUata St. & Clapp. B. of Quartzsite, Ari- zona. 98268 51 5-7, 9. G. dalliana St. Nogales, Arizona. 78689 49 8. G. dalliana St. Dragoon Mts., Arizona. 112395 49 10,11. G. dalliana media Pils. Montezuma's Well. 82918. 50 PLATE 9. Chaenaxis. 1, 2. Chaenaxis tuba P. & F. Benson, Ariz. 112062 .... 2 3. Chaenaxis tuba P. & F. Tucson, Ariz. 112124 2 4. 5. Chaenaxis t. brevicostata Pils. Tempe, Arizona. ... 4 6. Chaenaxis intuscostata Clapp. Tucson, Arizona 3 7-9. Chaenaxis intuscostata Clapp. Cotypes. 99599 .... 3 PLATE 10. Gastrocopta. 1, 2. G. corticaria Say. Upper Red Hook, N. Y 52 3, 4. G. corticaria Say. Philadelphia, Pa. 64524 52 5. G. carnegiei St. Type. Coll. Sterki 35 EXPLANATION OP PLATES. 363 FIGURE PAGE 6. G. marginalba Pfr. S. Vicente Banos, Cuba 60 7, 10. G. quadridens Pils. Capitan Mts., N. M. 74567 . . 57 8, 9. G. marginalba Pfr. Matanzas, Cuba 60 PLATE 11. Gastrocopta. 1. G. rupicola Say. Lossman's Key, Fla. 105353 58 2. G. rupicola Say. South Carolina. 3927 58 3, 5, 6. G. rupicola Say. Seville I., L. George, Fla. 69545. 58 4, 7, 9. G. r. duplex Pils. Bermuda. 105797 60 8. G. marginalba Pfr. After Kiister 60 10, 11. G. marginalba Pfr. Bermuda. 91154 60 12, 13. G. marginalba Pfr. Matanzas, Cuba 60 PLATE 12. Gastrocopta. 1-5. G. procera Gld. Washington, D. C. 28815 62 6. G. p. riparia Pils. Galveston, Texas. 78684 65 7, 8. G. p. sterkiana Pils. (duplicata St.) . Glenrose, Texas. 105745 357 9, 10. G. riograndensis St. Type. Hidalgo, Tex. 601337. 69 PLATE 13. Gastrocopta. 1, 2. G. mcclungi Hanna. Clay Co., S. D. 110762 66 3. G. mcclungi. Chamberlain, Brule Co., S. D. 110997.. 66 4, 5. G. mcclungi. Rogers, Ark. 90440 66 6. G. cristata P. & V. Tempe, Ariz. 112031 68 7. G. procera sterkiana Pils. Glenrose, Texas. 105745. . 357 8-12. G. cristata P. & V. Camp Verde, Arizona. 78694. . 68 PLATE 14. Gastrocopta. 1. G. rupicola matacumbensis Pils. Type. 105511 60 2, 3. G. rupicola matacumbensis Pils. Topotypes. 105509. 60 4. G. servilis Gld. St. Thomas. 60550 70 5. 6. G. servilis Gld., Cuba. 60548 70 7. G. servilis Gld. Somerset, Bermuda. 100483 70 8. G. s. riisei Pfr. Water Island, near St. Thomas. 3811. 74 9. G. s. riisei Pfr. Water Island, near St. Thomas. 22944. 74 10. G. desiderata Weinl. After Weinland 73 PLATE 15. Gastrocopta. 1-3, 5. G. peUucida Pfr. Cuba. 10036 75 4, 9. G. p. delicata Pils. Type and paratype 78 6. G. ovumformicae Weinl. After Weinland , 82 364 EXPLANATION OP PLATES. FIGURE PAGE 8. G. longnrio Cr. After Crosse ...................... 82 7, 10. G. pellucida biminiensis Pils. Rosario, Cuba ..... 78 11-13. G. pellucida biminiensis Pils. South. Bimini Cay. 114028 .................................... 78 PLATE 16. Gastrocopta. 1-27. G. pellucida hordeacella Pils. Localities on p. 80. . 78 drawn to one scale, by E. G. Vanatta. PLATE 17. Gastrocopta. 1, 2. G. pellucida hordeacella Pils. Drift of Pecos River, Texas. 90494 .............................. 78 3. G. pellucida hordeacella Pils. New Braunfels, Texas. 60460 ..................................... 78 4. G. pellucida hordeacella Pils. Guajadami, L. Cal. 190397 U. S. N. M ......................... 78, 80 5. 6. G. polyptyx Pils. St. Thomas. 60547 ............ 89 7. G. polyptyx Pils. Jamaica. 10035 ................. 89 8. G. pellucida parvidens St. Jerome, Arizona. 78717 . . 80 9. G. oblonga Pfr. After Kiister ..................... 90 10. G. nodosaria Orb. After d'Orbigny ............... 94 11,12. G. barbadensis solitaria Smith. After E. A. Smith. 88 13. G. pazi Hidalgo. After Hidalgo .................. 102 14. G. oblonga Pfr. Fortaleza. 171445 U. S. N. M ..... 90 15. G. oblonga Pfr. Para. 91128 .................... 90 16. G. iheringi Sut. Paratype. 22940 ................ 101 PLATE 18. Gastrocopta. 1, 3. G. barbadensis Pfr. Barbados. 85464 ............ 83 2. G. barbadensis Pfr. Barbados. 57202 .............. 83 4, 5. G. barbadensis Pfr. Guadalupe. 59903 ........... 83 6. G. b. crassilabris Pils. Somerset, Bermuda. 1017520. 85 7-9. G. b. crassilabris Pils. Mangrove Cay, Andros. 180645 U. S. N. M ................................. 85 10, 12. G. barbadensis Pfr. Varadero Park, Cuba ..... 83, 85 11. G. uvulifera Guppy. After E. A. Smith ........... 87 PLATE 19. Gastrocopta. 1-3, 6, 8. G. munita Reib. Albemarle. 215785 U. S. N. M. 96 4, 5. G. pfeifferi Bttg. (= munita). After Boettger . . .96, 98 7. G. munita Reib. After Reibisch ................... 96 9. G. clausa Reib. After Reibisch .................... 99 10. G. munita Reib. Iguana Cove. 215782 U. S. N. M. 96 EXPLANATION OP PLATES. 365 FIGURE PAGE 11. G. munita Reib. Narborough. 108517 U. S. N. M. .. 96 12-14. G. clausa Beibisch. Abingdon. 108516 U. S. N. M. 99 PLATE 20. Gastrocopta. I, 2. G. chichijimana Pils. Type. 80325 105 3, 6. G. c. ogasawarana Pils. Type. 83224 106 4, 5. G. boninensis Pils. Type 107 7, 9, 10. G. armigerella Reinh. Miyakejima. 85789 107 8. G. armigerella (atoma Hde.). Shanghai. 64107 109 II. G. armigerella Reinh. Kunchan. 80992 107 PLATE 21. Gastrocopta. I. G. armigerella hachijoensis Pils. Hachijojima. 83395. 109 2-4. G. coreana Pils. Kojeto, Korea. 95775 109 5-7, 10. G. hirasei Pils. China. 94774 110 8, 9. G. monadicula Hde. After Heude Ill II. G. theeli West. After Westerlund 118 12. G. ejecta B. & D. After Bavay and Dautzenberg. . . . Ill 13, 14. G. baudoni Mich. Pliocene, Hauterive. 4257 . . . 114 15, 16. G. huttoniana Bens. Kashmir. 84272 137 17. G. huttoniana Bens. Conch. Indica 137 PLATE 22. Gastrocopta. 1, 2, 4. G. dupuyi Mich. Pliocene, Hauterive 113 3. G. klunzingeri Jick. Abyssinia 120 5, 6. G. pleimesi Jick. After Jickeli 119 7. G. hermosa Jouss. After Jousseaume 121 8, 10, 13. G. acarus Bens. Fogo, Azores. 97279 122 9. G. microbus Morel. After Dautzenberg 123 11, 12. G. flocculus Morel. After Morelet 124 13. G. acarus Bens. Fogo, Azores. 97279 122 14-16. G. damarica Anc. Pienaar's Poort. 106484 125 PLATE 23. Gastrocopta. 1, 4. G. seignaciana Cr. Nossi-Be. 22926 128 5. G. tripunctum Morel. After Morelet 130 6. G. seignaciana Cr. After Crosse 128 7, 12. G. tripunctum Morel. Mayotte. 22927 130 8. G. microscopica Marts. Mauritius. 64102 131 9. G. lienardiana Crosse. Bourbon 132 10. G. lienardiana Crosse. After Crosse 132 11. G. 1. eudeli Pils. Bourbon. 64091 133 12. G. tripunctum Morel. Mayotte. 22927 130 366 EXPLANATION OP PLATES. FIGURE PAGE 13-15. G. microscopica Marts. After von Martens 131 16, 17. G. mimula Bens. Ceylon. 22935 134 PLATE 24. Gastrocopta. I, 2. G. lyonsiana Anc. Kualii, Oahu 141 3, G. lyonsiana Anc. Pearl Harbor. 108730 141 4, G. lyonsiana Anc. Kawaihapai. 109957 141 5, 6. G. lyonsiana kailuana Pils. Kailua, Oahu 143 7,11. G. lyonsiana "var. cornea" Bisucay, Calamianes. 96009 144 8, 12, 13. G. moellendorffiana Pils. Philippines 145 9. G. microsoma Tap.-Can. After Canefri 152 10. G. recondita Tap.-Can. After Canefri 153 II. G. lyonsiana "var. cornea." Bisucay, Calamianes. 96009 144 12, 13. G. moellendorffiana Pils 145 14. G. obstructaGassies(— neocaledonica). After Gassies. 154 15. G. niobe Fulton. After Fulton 153 PLATE 25. Gastrocopta. 1-3. G. pediculus Sh. Marquesas Is. 83161 145, 147 4, 9. G. palmira Stol. After Stoliczka 139 5,8. G. pediculus Shuttl. (artensis Montr.). New Cale- donia. 22928 145, 148, 150 6, 7. G. pediculus nacca Gld. Manoa Valley, Oahu 149 10, 11. Nesopupa filosa Stol. After Stoliczka. 12. Gastrocop ta pediculus ("samoensis"). Samoa. 22929. 145, 151 13. G. pediculus ovatula Mlldff. Loboc. 96011 149 14. G. artensis (= pediculus). After Montrouzier. . .145, 150 15. G. p. ovatula Mlldff. Sierra Bullones, Bohol. 96012. 149 PLATE 26. Gastrocopta. 1. G. pediculus Sh. (rossiteriBraz.). Point Piper. 115539. 158 2. G. p. queenslandica Pils. Calliungal. 115630 159 3, 5. G. strangei Pfr. Sydney, N. S. "W. 22934 157 4, 6. G. strangei Pfr. Narrabri. 63262 157 7, 8. G. margaretae Cox. After Cox 160 9, 10. G. tatei Pils. Type. (The columellar lamella of fig. 10 is drawn incorrectly. See pi. 30, fig. 12). 165 11. G. avanica Bens. Ava. Indian Museum 138 12, 13. G. moretonensis Cox. After Cox 161 14. G. bathyodon Bens. Nerbudda Valley. Indian Museum 136 EXPLANATION OF PLATES. 367 FIGURE PAGE PLATE 27. Gastrocopta. 1-4. G. hedleyi Pils. Cotypes. 63279 166 5, 6. G. nmssoni Pils. Type. 115541 167 7, 8, 10. G. m. macrodon Pils. Type. 63068 164 9. G. macleayi (= macdonneUi). 115542 162 11, 12. G. macdonneUi. 115538 162 PLATE 28. Gastrocopta, Gibbulina, Bothriopupa. 1. Gastrocopta wolfii Mill. Duran, near Guayaquil 94 2,3. Gastrocopta wolfii Mill. Ecuador. 307631 U. S. N. M 94 4. Gastrocopta wolfii Mill. After Miller 94 5, 6. Gibbulina infundibuliformis Orb. After d 'Orbigny. 6 7. Bothriopupa conoidea Nc. Cariaquita. 105199 231 8, 11. Bothriopupa conoidea Nc. Demerara 231 9. 10. Bothriopupa breviconus Pils. Guatemala. 107534. 230 12-14. Bothriopupa geminidens Pils. Type and para- typ^s. 105200 228 PLATE 29. Bothriopupa, Gastrocopta. 1. Bothriopupa leucodon Morel. After Fischer & Crosse. 232 2. Bothriopupa variolosa Gld. Big Pine Key, Fla. 104026. 230 3. Bothriopupa variolosa Gld. Little Marco, Fla. 92889. 230 4. Bothriopupa leucodon Morel. Specimen 232 5. 7. Bothriopupa tenuidens Ad. Mandeville, Jamaica. 101497 229 6. Bothriopupa tenuidens Ad. Jamaica 229 8. Gastrocopta bathyodon Bens. After Conch. Indica . . . 136 9. Gastrocopta avanica Bens. After Conch. Indica 138 10. Gastrocopta barrackporensis Gude. After Conch. In- dica 135 11-13. Bothriopupa tenuidens Ad. Cariaquita. 105199.. 229 PLATE 30. Gastrocopta. 1. G. larapinta deserti Pils. Forrest River. 115540 170 2, 3. G. larapinta deserti Pils. Central Australia. 72481. 170 4. G. mooreana Smith. After B. A. Smith 160 5-7. G. larapinta Tate. Paratypes from Prof. Tate 168 8. G. mussoni ( ?). Calliungal. 115631 168 9. 11. G. larapinta Tate. Central Australia. 72478 168 10. G. larapinta Tate. After Tate 168 12. G. tatei Pils. Type 165 368 EXPLANATION OP PLATES. FIGURE PAGE PLATE 31. Hypselostoma. 1-5. Hypselostoma tubiferum Bens. 22656 and 1215 178 6, 7. Tonkinia mirabilis Rochebr. After Rochebrune .... 359 8-10. Hypselostoma roebeleni Mlldff 186 11-13. H. annamiticum altius Pils. Annam 181 14. 15. H. laidlawi Cllge. After Collinge 181 PLATE 32. Hypselostoma. 1-5. H. kisularum Pils. Type. 95252 182 6. H. quadras! Mlldff. 96539 185 7, 8. H. luzonicum Mlldff. After Boettger 183 9. H. luzonicum major Mlldff. After Boettger 184 10. H. luzonicum imbricata Mlldff. After Boettger 184 11. H. luzonicum imbricata Mlldff. 96542 183 12. H. edentulum Mlldff 187 13. H. luzonicum imbricata Mlldff. 96541 184 PLATE 33. Anauchen, Boysidia. 1. Anauchen gereti B. & D 189 2. 3. Anauchen gereti B. & D. After Bavay and Dautzen- berg 189 4. Anauchen messageri B. & D 189 5, 6. Anauchen angulinus Gredler. After Gredler 191 7. Anauchen messageri B. & D. After Bav. and Dautz. . . 189 8, 9. Boysidia hunaiia Gredler. After Gredler 194 10. Boysidia hunana conspicua Mlldff 195 11. Boysidia salwiniana Theob. After Hanley & Theobald. 206 12-14. Boysidia hunana conspicua Mlldff 195 15. 16. Boysidia strophostoma Mlldff 197 17. Boysidia hangchowensis Pils. Type 196 PLATE 34. Boysidia. 1, 2, 4. B. plicidens Bens. Landour. 3933 198 3. B. plicidens Bens. Hangchow. 94775 198 5, 6. B. dayana Stol. After Stoliczka 205 7,8. B. boettgeri Mlldff. 69799 208 9, 10. B. plicidens Bens. Yoro, Mino. 84272 198 PLATE 35. Boysidia., 1, 2. B. robusta B. & D. 105062 201 3-6. B. lamothei B. & D. 105081 202 7, 8. B. paivei B. & D. 105095 203 EXPLANATION OF PLATES. 369 FIGURE PAGE 9. B. landurensis Pils. Type. 16721 204 10, 11. B. kelantanensis Sykes. 98191 208 12. B. kelantanensis Sykes. After Sykes 208 PLATE 36. Gyliauchen. 1-4. G. hungerfordiana Mlldff. Gunong Pondok. 62516. 212 5, 8. G. transitans Mlldff. Siam 214 6, 7. G. transitans Mlldff. After MoeUendorff 214 9, 10. G. crossei Morlet. After Morlet 215 11-13. G. crossei Morlet. 66063 215 PLATE 37. Gyliauchen. 1-3. G. fruhstorferi Mlldff. 69883 217 4-6. G. everetti Smith. 78403 218 7-9. G. dohertyi Fulton 219 10. G. everetti Smith. After E. A. Smith 218 11. G. bensonianus Blanf. 62170 211 12. G. bensonianus Blanf. Conch. Indica 211 PLATE 38. Aulacospira, Systenostoma. 1. Aulacospira mucronata Mlldff. 96547 222 2. Aulacospira porrecta Mlldff. 78406 222 3-5. Systenostoma pauperrima B. & D. After Bav. et Dautz 225 6, 7. Aulacospira hololoma Mlldff. 78414 222 8, 9. Aulacospira scalatella Mlldff. 67983 223 10-12. Systenostoma pulverea B. & D. After Bav. et Dautz 225 13. Aulacospira rhombostoma Mlldff. 98247 223 14, 17. Aulacospira azpeitiae. Hidalgo. 95550, 81595 . . 224 15, 16. Systenostoma defixa B. & D. After Bav. et Dautz. 226 PLATE 39. Fauxulus. 1-3. F. capensis Kiister. Buffelsfontein. 106494 236 4. F. capensis Kiister. Port Elizabeth. 65780 236 5. F. capensis ovularis Kurr. After Kiister 238 6. F. capensis Kurr. After Kiister 236 7. F. capensis ovularis Kurr. Large form. 22904 238 8. F. capensis (P. pottebergensis Kr.). After Kiister. . . 240 9. F. capensis var. (P. fonticola Dh.). After Deshayes. . 239 10, 11. F. pamphorodon Bens. Simonstown. 64096 240 12. F. pamphorodon Bens. Simonstown. 106489 240i 370 EXPLANATION OP PLATES. FIGURE PAGE PLATE 40. Fauxulus. 1, 2. F. glanvilleanus novenarius Pils. Grahamstown . . . . 250 3. F. pereximius M. & P. After Melvill & Ponsonby 247 4. 5. F. mcbeanianus M. & P. Topotype 247 6. F. glanvilleanus darglensis Bnp. After Burnup 250 7. 9, 10. F. ponsonbyanus Morel. Grahamstown. 114967. 253 8. F. glanvilleanus tomlini Bnp. Somerset East 252 PLATE 41. Fauxulus, Gastrocopta, Odontocyclas. 1, 2. Fauxulus crawfordianus M. & P. After Burnup . . . 242 3. Gastrocopta duplicata Preston. After Preston 127 4-6. Fauxulus layardi Bens. Cape Point. 106495 243 7. F. 1. stoaphora 'Bs.' Bnp. 64100 245 8. F. 1. stoaphora 'Bs/ Bnp. After Burnup 245 9, 10, 11. Odontocyclas kokeilii Rm. 22700 256 12. 13. Odontocyclas rossmaessleri Schm. 114972, 22860. 257 PLATE 42. Abida. 1-4. Abida frumentum Drap. 3884 297 5. A. f . hungarica Kim. Nandor. 66048 302 6. A. frumentum turgida Parr., Kiister. After Kiister. . 300 7. A. frumentum pachygastra Zgl. 101618 302 8. 9. A. iUyrica Em. 114982 303 10, 11. A. frumentum pachygastra Zgl. After Rossmaess- ler 302 12, 15. A. apennina (Charp.) K. After Kiister 305 13. 14. A. apennina (Charp.) K. 22820 305 16. A. apenrina (Charp.). Tuscany. 114981 305 PLATE 43. Abida. I, 2. A. braunii Rossm. 66916 273 3. A. braunii Rossm. 22823 273 4-6. A. braunii Rossm. After Rossmaessler 273 7-9. A. partioti Moquin-Tandon. 67750 276 10. A. dupuyi West. After Westerlund 277 II. A. ringens bigerrensis Moq. After Moquin-Tandon . . 280 12-15. A. ringens Mich. 3896 278 PLATE 44. Abida. 1-3. A. polyodon Drap. 22843, 3882 270 4-8. A. polyodon ringicula Mich. Barcelona. 106561 . . . 272 5. A. affinis Rossm. After Rossmaessler 282 6. A. affinis Rossm. 114977 282 EXPLANATION OP PLATES. 371 FIGURE PAGE 7, 10. A. vergniesiana Ch., Kiister. 22842 286 9. A. pyrenaearia Mich. After Dupuy 287 11. A. vergniesiana provida West. 3390 287 12. A. vergniesiana Ch., Kiister. After Kiister 286 13. A. petrophila Fagot. After Kiister 291 14, 15. A. andorrensis Bgt. After Bourguignat 293 PLATE 45. Abida. 1, 2. A. illyrica cylindracea Rm. After Rossmaessler . . . . 305 3. A. illyrica minor Rossm. After Rossmaessler 304 4. A. illyrica elongata Rossm. After Rossmaessler 304 5-7. A. mortilleti Stab. (= stabilei Mts.). After Stabile. 318 8, 9. A. micheli Terver. After Dupuy 315 10. A. anceyi Fagot. 114978 317 11, 12. A. variabilis Drap. 22849 321 13. A. v. sabaudina Bgt. After Bourguignat 325 14. A. v. obliqua Nevill. After Nevill 325 15. A. v. sabaudina Bgt. Lausanne. 22855 325 16. A. v. polita Risso. After Risso 326 17. A. fusiformis var. minor K. (= A. atracta puella). After Kiister 328 18, 19. A. fusiformis K. (= A. atracta). After Kiister. . 327 PLATE 46. I, 2. Sandahlia cylindrica Mich. 79952 259 3. Sandahlia cylindrica Mich. 3904 259 4. Granopupa granum saulcyi Bgt. After Bourguignat .. 338 5. 7. Sandahlia cylindrica curtata Pils. 22731 261 6. Abida illyrica gastrodes Pils. 22859 305 8. Abida frumentum curta P. & M. After Potiez & Mich- aud 299 9. Abida variabilis incerta Hartm. After Hartmann .... 323 10. Abida lapidaria Hutton. Conch. Iconica 330 II. Abida secale boileausiana Charp. After Kiister .... 312 12. Gastrocopta ridibunda M. & P. (= damarica Anc.) . . 359 13. Gastrocopta perversa sana Pils. Type 357 PLATE 47. 1. Granopupa michaudi Terver. 22804 345 2. Granopupa michaudi isseriana Pils. 75906 346 3. Granopupa granum Drap. 22699 335 4. Granopupa brondeli Bgt. 63612 346 5. Granopupa brondeli Bgt. After Bourguignat 346 372 EXPLANATION OF PLATES. FIGURE PAGE 6. Granopupa eucyphogyra Let. Ann. de Malac 350 7. Granopupa dupoteti Terver. After Bourguignat 349 8. Granopupa dupoteti Terver. 3824 349 9. Chondrina guiraoensis Em. 22790 Vol. XXV 10. Granopupa kabyliana Let. 75905 347 11. 14. Abida secale Drap. 22830 306 12. Granopupa granum Drap. Tuscany. 22697 335 13. 15. Abida secale Drap. 22835 306 16. Abida secale hordeum Studer. After Hartmann .... 308 PLATE 48. Granopupa. I, 2. Granopupa scalaris Benoit. 22801, 22799 353 3. Granopupa nitida (Fer.) Kiister. After Kiister 343 4. Chondrina spelta obscura Miihlf., Kiister. After Kiis- ter Vol. XXV 5. 7, 8. Granopupa scalaris Benoit. 22800 353 6. Chondrina spelta minor Em. After Eossmaessler. Vol. XXV 7. 8. Granopupa scalaris Benoit. 22800 353 9. Chondrina spelta Beck. 22794 Vol. XXV 10. Chondrina spelta obscura Miihlf., Kiister Vol. XXV II. Chondrina spelta ventilatoris Parr. After Kiister. Vol. XXV 12-14. Granopupa philippii Cantrine. 5194,101625,22802. 341 15. Granopupa rhodia Eoth. 5195 344 PLATE 49. Granopupa. 1, 2. Granopupa rupestris Phil. 3901 351 3. Granopupa rupestris Phil. 22796 351 4. Granopupa rupestris coloba Pils 352 5. Granopupa occulta Parr., Eossm 353 6. Granopupa rupestris Phil. 22798 351 7,8. Granopupa occulta Parr., Eossm. After Eossmaessler. 353 9. Granopupa occulta Parr., Eossm 353 10-14. Granopupa refuga West 355 DATES OF ISSUE OF THE PARTS OF VOL. XXIV. PART 93, pages 1-112, plates 1-13, Dec. 18, 1916. 94, pages 113-176, plates 14-29, July 18, 1917. 95, pages 177-256, plates 30-38, Nov. 9, 1917. 96, pages 257-380, plates 39-49, March, 1918. INDEX. Note. — Names of genera and other groups are printed in SMALL CAPITALS ; of synonyms in italics. abbreviata St ABIDA Leach abrupta "West acarus Bs acavus Schauf acuta Kutsch adjuncta Ziegl 303, aenmla Parr affinis Rossm affinis Sterki agna P. & V albid,ocostata W ALBINULA Sterki . . 11, 13, altius Pils ameliae Bgt. Loc ANAUCHEN Pils anceyi Fag andorrensis Bgt angularis West 322, angulinus Gredl ANISOLOMA Anc annaa-ensis Bk annamiticum Mlldff. . . . annobonensis Gir antiqua Schub apennina Charp appeliusi West arabica Dohrn arctespira Bgt armigera P. & M armigerella Reinh artense Mlldff. 18 262 313 artensis Montr 147, 150 ashmuni St 41 atoma Hde 108, 109 atractaPils. . . 327 -i 22 attenuata Fag 295 attrita Moq 271, 272 AULACOSPIRA Mlldff. ... 220 aulusensis Fag 290 auriformis Gupp 88 avanica Bs 138 ^ azpeitiae Hid 224 26 354 114 baillensi Dup 280 181 battlensis West 281 272 barbadensis Pfr 83 188 barrackporensis Gude . . 135 317 barrattei L. & B 349 293 barreri Bgt 116 325 basidentata Pils 48 191 bathyodon Bs 136 247 baudoni Mich 117 103 BENSONELLA Pils 198 180 bensonianus Blf 211 124 bermudensis Prime .... 72 270 Bifidaria Sterki 6 305 bigerrensis Moq 280 329 Ugoriensis Mich 280 330 bilamellata S. & C 51 324 biminiensis Pils 78 16 bipalatalis W 283, 284 107 blanci Poll 319 142 boettgeri Mlldff 208 (373) 374 INDEX. bofilli Fag 292 boileausiana Ch 312 boninensis Pils 107 BOTHRIOPUPA Pils 226 boubeensis Fag 289 bourgetica Bgt 310 boysianum Bs., Nev 137 BOYSIDIA Ancey 192, 194 braunii Eossm 273 breviconus Pils 230 brevicostata Pils 4 brevituba Mlldff 217 brondeli Bgt 346 bugeysiaca Loc 300 bulim&formis Woll 337 bulimiformis Love 337 C cadica Fag 314 callosa Zgl., Em 298, 304 capensis Kiist 236 capillacea D. & S 144 caprearum Phil 342 carinata Gld 63 carnegiei St 35 cartennensis Let 347 Carychium 131, 137 castanea Gredl 303 catalonica Bof 294 CERION Bolt 267 Cerium Link 268 CH^NAXIS P. & F 1 charlotia Eisso 322 chichi jimana Pils 105 CHONDRINA Eeich 234 Chondrus Cuv 262, 268 cincinnatiensis Jdg. ... 28, 29 clappi Sterki 20 clausa Eeib 99 clausilioides Boub 288 clessini Doer 93 climeana Van 24 cochisensis P. & F 44 Cochlodonta Fer 268 coloba Pils. . 352 columnella Loc 315 conica Ben 352 conispira West 275 eonoidea Nc., Pfr 231 conspicua Mlldff 195 contracta Say 22 coreana Pils 109 cornea Mlldff 142, 144 corrugata Loc 261 corticaria Say 52 costata Fag 314 crassilabris Pils 85 orassilabrum Bgt 275 crawfordianusM. & P.. . 242 crimoda Bgt., Loc 299 cristata P. & V 68 cristella West 277 crossei Mori 215 curta Ant 103 curta Issel 301 curta Kiist. 300 curta Moq 260,261 curta Moq 288 curta Pot. & Mich 299 curta Sterki 34 curtata Pils 261 curvidens Gld 28 cycloides Moq 274, 275 cylindracea Ziegl 305 cylindrella Moq 283 cylindrella Loc 309 cylindrica Mich 259 cylindricus Hartm 307 cylindriformis Loc 260 cylindroides Moq 308 D dalliana St 49 damarica Anc 125, 359 darglensis Bp 250 dayana Stol 205 decemplicata Bgt 309 defixa B. & D 226 delicata Pils 78 delphinensis Loc 324 INDEX. 375 deltostoina Charp 22 deserti Pils 170 desiderata Weinl 73 dicrodonta Pils 100 didymodonta Br 116 didymodus Sdb 116 dilute West 338 disjuncta Moq 279 dohertyi Fult 219 dorsalis Mlldff 196 dorsata Ancey 195 dufourii Fer. 259 duodecimcostata Loe. . . . 310 duplex Pils 60 duplicate St 65, 127, 357 dupontii Paet 350 dupoteti Terv 349 dupuyi West 277 E ebrodunensis Bgt 324 echthrodes West 261 edentula Taylor 310 edentulum Mlldff 187 e jecta Bav. & Dautz Ill elongata Moq 279, 283 elongata Saulcy 308 elongata Ziegl 304 elongatissima Bof 285 elongatissima Dup 260 endochUa Germ 283 endodonta MUdff 217 Eubifidaria St 53 eucrina Bgt 116 eucyphogyra Let 350 eudeli Pils 133 eudolicha Bgt 283 euryomphalum Mlldff. . . 141 everetti Smith 218 exigima Mouss 342 exUis Moq 273 eximia West 328 extrema Hde., Mlldff. ... 108 fagorum Fag 313 fagotiana~Loc 280 farcimen Sdb 116 Faula Ads 234 FAUXULUS Schauf 234 ferdinandi And 117 filosaStol 140 fischeriDh 117 fissidens Sdb 117 flocculus Morel 124 floridana Dall 29, 30 fonticola Dh 239 fordiana St 26 fossanensis Sacco 115 freseriana Bof 284 fruhstorferi Mlldff 217 frumentacea Loc 298 frumentum Drap 297 fryanus Bens 246 fusiformis Kiist 328 fustisBttg 270 G garumnica Fag 281 GASTROCOPTA Woll 6, 53 gastrodes Pils 305 geminidens Pils 228 gereti B. & D 189 gibbosa Say 63 GIBBULINA Beck 5 gibilfunnensis de Greg. . . 355 gigantea Schr 303 glanvilleana M. & P 249 glanvillianus Anc 249 gracilidens Sdb 116 gracilior Kregl 308 gracilis Sterki 29, 31 Granaria Held 262 graniformis Loc 336 GRANOPUPA Bttg 332 granum Drap 335 Oredleriella Mlldff. 194 376 INDEX. gourdoniana Fag 313 GYLIAUCHEN Pils. . 210 hachijoensis Pils 109 haggenmacheri Jick. . . . 358 hangchowensis Pils 196 hedleyi Pils 166, 167 Helix infundibuliformis Orb 6 Helix miliola Orb 92 Helix moricandi Fer. . . . 257 Helix nodasaria Orb. ... 94 hetaera West 294 heterodus Bttg 116 hirasei Pils 110 hololoma Mlldff 222 holzingeri St 25 homala West 352 hordacea Gabb 69 hordeacea Binn 69 hordeacella Pils 78 hordeum Stud 308 humilis Beck 342 hunana Gredl 194 kunanensis Mlldff 194 hungarica Kim 301 hungerf ordianus Mlldff. . 212 hupeana Gredl 206 huttoniana Bs 137 hyalina Zel 147, 152 Hydrocena milium Bs. 199, 200 HYPSELOSTOMA Bens. . , 175 iheringi Sut 101 illyrica Eossm 303 imbricata MUdff 184, 360 IMMERSIDENS P. & V. 11, 38, 100 incertus Hartm 323 indica Pfr 136 indigena Anc 86 Infundibularia Pfr 5 infundibuliformis Orb. . . 6 insularum Pils 182, 360 insulsa Prest 359 interpres St 17 intrans West 300 intrusa Slav 269 intuscostata Clapp 3 ischurostoma Bgt 323 isseriana Pils 346 isserica Anc 346 isseli Caz. . . 320 jamaicensis Ad 75, 81 Jaminia Leach 262, 268 javana Mlldff 209 juniperi Mont 307 K kabyliana Let 347 kailuana Pils 143 kanalensis Caziot 305 kelantanensis Sykes .... 208 klunzingeri Jick 120 kockeiliiPoll 256 kokeilii Bm 256 kralikiluet 311 krueperi West 329 kruperi West 330 labiosa Moq 274 labiosaMoq 323 laidlawi Cllge 181 lamothei B. & D 202 landurensis Pils 204 lapidaria Hutt 330 larapinta Tate 168 larteti Dup 115 lasallei Bgt 311 layardi Bens 243 leptospira West 295 Leucochilus Bttg 6, 8 leucodon Morel. . 232 INDEX. 377 lienardiana Cr 132 lilietensis Bof 293 limonensis West 320 longa Moq 260 longidens Cl 117 longurio Crse 82 longurio Moq 283 luchuana Pils 108 ludovici Bgt 116 luzonicum Mlldff 182 lyonsiana Anc 141 M macdonnelli Braz 162 macleayi Braz 163, 164 macrodon Pils 164 magdalenae Bgt 315, 316 magna Stab 303, 304 major Bgt 275 major Bof 284 major Kregl 304 major MUdff 184,360 major Moq 323 major West 342 margaretae Cox 160 marginalba Pfr 60 matacumbensis Pils 60 mcbeanianus M. & P. ... 247 mcclungi H. & J 66 mea Bgt., Loc 299 media Pils 50 meledana St 344 meridionalis Ad 338 meridionalis MLldff Ill meridionalis Strob 303 messageri B. & D 189 michaudi Terv 345 michelii Terv 315 microdonta Doer 92 Micropetasus Mlldff 220 microsoma T.-C 152 migma West 295 miliola Orb. 92 milium (Hydrocena) Bens 199, 200 minima Kregl 301 minor Bens 245 minor Bgt 336, 340 minor Kiist 328 minor Mich 308 minor Moq 323 minor Bossm 272 minuta Say, Pfr 63, 64 mitiuta St 35 miocaena Brn 289 mirabilis(Tonkinia)Mab. 359 moellendorffi Bttg 209 monadicula Hde Ill monas Hde 108 montanella Ckll 29, 31 montserratica Fag 272 montsiccana Bof 293 mooreana Sm 160 moretonensis Cox 161 moricandi Fer 257 mortilleti Stab 318 mucronata Mlldff 222 multidens Moq 274, 275 nmltidentata Oliv 326 munita Reib 96, 357 mussoni Pils 167 mutalUis Fer 322 myrmecoon Crse 82 N nacca Old 147, 149 nana Miihlf 342 nansoutyana Fag 290 nansoutyi Fag 289 nebraskana Binn 22 necra Bgt 116 neocaledonica Pils 154 nodosaria Orb 94 noerdlingensis K1 270 nouleti Mich 116 nitens Pse 146, 151 nitida Ant., Sowb 343 nitida Fer 343 niobe Fult 153 nova Bgt., Loc 299 378 INDEX. novemplicata Bgt 308 novemplicata Moq 288 novenarius Pils 250 0 obliqua Nevill 325 oblonga Pfr 90 oblongata Rm 302 obstructa Br 117 obstruct®, Gass 154 occidentalis Fag 291 occulta Parr 353 octavia Hagenm 351 ODONTOCYCLAS Schluet. . 254 ogasawarana Pils 106 olearum Bgt 315, 316 oligobasodon P. & F 46 oparea Loc 296 oryzaEdw 269 oryzana Loc 310 ovampoensis M. & P 125 ovatula Mlldff 149 ovularis Kurr 238 ovularis Moq 323 oyonnaxia Loc 310 pachygaster Moq 323 pachygastra Frass 270 pachygastra Ziegl 302 pachygastris Kiist 302 pamphorodon Bens 240 papieri Hag 351 PARABOYSIDIA Pils 201 parva Stab 303, 304 partioti Moq 276 parvidens St 80 pauperrima B. & D 225 paviei B. & D 203 pazi Hid 102 pediculus Sh 145, 158 pellucida auct 71 pellucida Pfr 75 peninsularis Pils 24 pentodon Say 28 petrophila Fag 291 pereximius M. & P 247 perlonga Bof 285 perversa St 40, 357 pfeifferi'Bttg 96, 98 philippii Cantr 341 phthisica Bof 285 phymata West 312 pilsbryana St 36 pineta Fer 322 piniana Fag 312 plagiostoma Bgt 325 pleimesi Jick 119 plicidens Bens 198 polita Eisso 326 polita West 305 polyodon Drap 270 polyodon Mlldff 185 polyodon Moq 261 polyodon Moq 283 polyplicata Miihlf 302 polyptyx Pils 89 porrecta Mlldff 222 potteburgensis Krs 240 poulseni West 340 primula West 301 procera Gld 62 profuga West 337 provida West 287 PSEUDOSTREPTAXIS Mlldff. 224 puella Pils 327 pulchella Moq 279 pulverea B. & D 225 punica L. & B 348 PUPA Bolt 267 Pupa Drap 262, 267 Puparia Eaf 268 pusillum Mlldff 186 pyrenasaria Mich 287 pyrenmca Boub 278 pyrenaica Q-erm 288 pyrenearia auct 288 Q quadras! Mlldff 185, 360 INDEX. 379 quadridens Pils 57 quadridentata St 57 quadridentata Kl 115 quadriplicata Brn 114 quatuordentata Sac 115 queenslandica Pils 159 R recondita T.-C 153 refuga West 355 reibischi Dall 357 retracta West 290 rhodanica Loc 298 rhodia Roth 344 rhombostoma MUdff. ... 223 ridibunda M. & P. . .125, 359 ringens Mich 278 ringicula Mich 272 riograndensis St 69 riparia Pils 65 robusta B. & D 201 rochebruni Mab 190 roebeleni Mlldff 186 rossiteri Braz 147, 158 rossiteri Pils 167 rossmaessleri Schm 257 rossmassleri Fag 280 ruidosensis Ckll 19 RUPESTRELLA Monts. 332, 341 rupestris Phil 351 rupestris Rossm 350 rupicola Say 58 rustica Bgt., Loc 298 rusticula Bgt 315, 316 S sabaudina Bgt 322 saeva West 284 salwineana Theob 207 salwiniana Theob 206 samoensis Mss 146, 151 sana Pils 357 SANDAHLIA West 258 sardoa Cantr 339 sarratina Moq 308 336, 338 savii Charp 342 sawii Mouss 342 saxicola Moq 292 scalarina Sowb 354, 355 scalaris Ben 353 scalarisca Pact 354 scalatella MUdff 223 schiibleri Kl 270 Scopelophtta Alb 254 secale Drap 306 secale Sowb 241 secatina Loc 307 secalina. "Marts." 264 seignaciana C. & F 128 seligo West 308 semidens West 290 senegalensis Malz 121 serrula Bs 135 servilis Old 70 sibuyanicum Mlldff. . . . 184 siligo Roth 308 similis Sterki 17 simoni Bttg 319 SlNALBINULA Pils. 11, 103, 116, 118 SOLATOPUPA Pils 234 Solidula F. de W 267 solitaria Sm 88 soluta Pfr 244 stabilei Marts 318 stabili Marts 319 sterkiana Pils 127, 357 stoaphora Bs., Bp 245 Stomodonta Merm. . .262, 268 strangei Pfr 157 striolatus Mlldff 215 strophostoma Mlldff. . . . 197 subantiqua Lorn 270 subcylindrica Loc 300 subfusiformis Kl 270 sublaevigata Bgt 310 subringens Fag 279 snbulata Biv 340 subvariabilis Sandb 269 suevica Sdb. 115 380 INDEX. SYSTENOSTOMA B. &D... 224 T Tanystoma Bens 175 tapeina Bgt 116 tappaniana Ad 33 tappiana Ward 33 tatei Pils. 165 taurica Kessl 345 tenuidens C. B. Ad 229 tetrodon West 338 theeli West 118 thibetica Bs 138 TOMIQERELLA Pfr 241 tomlini Bp 252 TONKINIA Mab. 175, 176, 359 TorquilU Studer 262 transient Boub 286 transitans Mlldff 214 transitus Boub 286 triptycha Mlldff 223 triticea Ziegl 298 triticum Ziegl 303, 304 tuba P. & F 2 tubiferum Bens. 178 turbiana Caz 338 turgida Reuss 115 turgida Parr 300 tuxensis Fag 277 U ulmensis Schl 269 undorfensis Pils 117 unicarinata P. & M 356 uvuUfera Gupp 87 valcourtiana Bgt. . . . 315, 317 variabilis Drap 321 variolosa Old 230 ventricosa Loc 272, 300 vergniesiana Ch 286 VERTIGO 116 YERTIGOPSIS Ckll 11, 27 vouastensis Rasp 269 W wallabyensis Sm 171 wolfiiMill 94,357 PLATE 1 6 11 Pupillid PLATE 2 12 c • JFl •L .._. PLATE 3 • Y 8 .._, 10 11 «4 :>, '^ Pupillida? 1'LATK 4 10 11 12 15 13 14 Ptipilliclie IM.ATK 5 28 29 30 31 ^-^ 32 33 v^X 36 37 38 41 40 42 46 V_/ 47 48 44 49 50 32 1 *u pill i dci» PLATE G 9 Pupillidee PLATE 7 10 11 Pupillidci* 9 I'upillidci1 PLATE , ; • > 6 Pupillidu? PLATE 10 (I PLATE 11 & G ^ - 8 K) 11 9 if. Pupillichv PLATE 1 2 8 10 PLATE 13 ill $f Pupillidee i r PLATE '• 'X Pupilliclcic PLATE 15 Pupillidae PLATK 16 Pupillidii? PLATE 17 15 1.6 PLATE 1 8 10 11 PLATE 10 PLATE 20 \ m \ 10 6 11 Pupilliclae PLATE 21 PLATE 3 V) 11' 15 PLATE L?:*. I'u pi Hi ilct? 8 9 ,.-- PLATE 2B .. > M i 13 PLATE 26 1 ' v \:\ 12 JO 11 L.4 PLATE 27 *r 10 11 I'upillidci? PLATE 2S Pupillidti? PLATE 11 Pu pill id; i- PLATE 00 I V I >i I ! i < I , i • PLATE . I 'U |>| I I I i I , i • PLATE a 2 11! 13 ir 1G 1 / f. I'M pill id u i > i ! 1 i < I a ' PLATE I 1 i PLATE '»B if. fe 13 11 L3 15 I Ju jTillid u- PLATE PLATE '•!> I 1 7 ?, 0 1