tite 1 Bere ayey wae s'y’s ' a ' Veer as UM wake yA 4 Pevans AAS a8 | : 1% seh ; A ek i} J TY ‘eo i ’ ‘ ee “ereeyey a en pene ws 4 ’ es Witeays "Peveer yey ‘ ‘ . tr eee es TOP> oaks AP LIBRARY OF THE UNIVERSITY OF ILLINOIS AT URBANA-CHAMPAIGN The person charging this material is re- sponsible for its return to the library from which it was withdrawn on or before the Latest Date stamped below. Theft, mutilation, and underlining of books are reasons for disciplinary action and may result in dismissal from the University. To renew call Telephone Center, 333-8400 UNIVERSITY OF ILLINOIS LIBRARY AT URBANA-CHAMPAIGN MYO 4 Whe JUN 12 1996 "teh ee AUG 2 11897 34 f _ ~ 13 2001 i ] 9 of Wn “ 5 © Jey APR 17 MAR 0 3/1992 MAY 4 6 1994 L161—0O-1096 a i hin ¥ ie : { Digitized by the Internet Archive in 2011 with funding from University of Illinois Urbana-Champaign http://www.archive.org/details/flowersinsectsli00robe FLOWERS AND INSECTS LISTS OF VISITORS OF FOUR HUNDRED AND FIFTY-THREE FLOWERS By CHARLES ROBERTSON CARLINVILLE, TLLINOIS 1928 THE SCIENCE PRESS PRINTING COMPANY LANCASTER, PA. a » « e Copyrighted 1929 By CHARLES ROBERTSON 30 MA-S- Ee 7o ~~ et A, Sra ae) ae ae FELAG SIOLORS Rs4f _ = AA PREFACE BEGINNING September, 1887, and ending July, 1899, the papers mentioned in the bibliography record 7,817 visits to 278 flowers. The present work records 15,172 visits to 441 flowers, nearly twice as many, excluding visits to 12 wind flowers. Mueller’s ‘‘ Fertilisa- tion of flowers’’ records 5,231 visits, and his ‘‘Alpenblumen”’ gives 8,491. The observations were made within ten miles of Carlinville. The number of species of bees found on flowers at Carlinville is Bb 296: compared with New York, 189; Connecticut, 231; New Jersey, 250. The list of visitors contains types of 232 new species of insects. In identifying insects assistance has been afforded in Hymenop- tera by W. H. Ashmead, Nathan Banks, J. C. Crawford, E. T. Cresson, R. A. Cushman, A. B. Gahan, W. J. Fox, L. O. Howard, Theo Pergande, and S. A. Rohwer; in Diptera by J. M. Aldrich, D. W. Coquillett, C. W. Johnson, J. R. Malloch, R. R. Parker, C. H. T. Townsend, and S. W. Williston; in Lepidoptera by G. H. French and C. A. Hart; in Coleoptera by C. A. Frost, C. A. Hart, Charles Liebeck, and Samuel Henshaw; in Hemiptera by C. A. Hart, H. M. Parshley, and P. R. Uhler; in Neuroptera by Nathan Banks and J. C. Crawford. In 1887 names were rather readily obtained for Syrphidae, Bombyliidae, and Conopidae. In 1888 for 384 specimens of Diptera, estimated as 89 species, but certainly containing many — more, only 17 specific determinations were received. It was hard to get names for Tachinidae until 1891-2 when Townsend supplied them. By Coquillett the Empididae were identified in 1894-5, and many Tachinidae and other Diptera in 1896-1901. For Sar- cophagidae only a few names, some erroneous, were obtained until 1920 when they were determined by Parker. In 1892-1901 many non-aculeate Hymenoptera were identified by Ashmead. Many manuscript names were supplied by him. Some of these have never been described, while others have been described under other names. Particular difficulty was experienced in the case of the bees, by far the most important for the investigation. Of the bees recognized only about 39.8 per cent are mentioned in Cresson’s catalogue of 1887, and of those only about 46.6 per cent were identified for both sexes. At present I know both sexes in 81.7 per cent of the local bees. 3 705533 4 FLOWERS AND INSECTS—XXVI Generally, determinations of bees are unreliable except when both sexes of all of the species are known. When only one sex is known the other is probably mixed with that of another species. Formerly in Agapostemon four species had been distinguished in the females but the males were referred to another species, A. tricolor. There was little chance of separating another real species and this condition had the advantage of indicating five species instead of four. Sometimes the species are separated only in the males and the females ignored. Determinations of the females are twice as important as those of the males since they make twice as many flower visits. On account of the impossibility of getting all of the bees identi- fied it was necessary to describe the new species and match the sexes, thus making a digression which interrupted the study and involved an intrusion into a field which there was no inclination to cultivate. Of all bees the bumblebees are the easiest to collect and identify. Eight species occur at Carlinville. Two species, Bombus ameri- canorum and Bombias auricomus, had the females mixed under the name of Bombus pennsylvanicus and were referred to the male of Bombias auricomus, while the male of Bombus americanorum was referred to another genus as Apathus? elatus. The female of another species was identified for me as Bombus ridingsvi. The worker was mentioned in 18, 579, 1891, and the male in 4, 65, 1891. But Bombus ridingsii turned out to be a sex name of Bombus bi- maculatus, the prior name of the male of the same species. From my experience I think that a specialist is competent to make determinations, or compare types, only at the time when he is making a careful study of a particular group. In 32 cases I re- ceived two different specific names for the same insect. Your species monger describes the obvious and easy cases, the males and females as distinct species, and passes on the difficulties to some one else. North America is a large region and entomology, or even an order of insects, is a large subject. A specialist’s relia- bility bears an inverse relation to the size of the region and the extent of the subject in which he affects authority. Students of bees describe species from all over North America, and even farther, but any one of them, and all of them together, can not identify both sexes of the bees of any locality. All of the observations given here were made for the purpose of ascertaining the different kinds of insect visitors. Collectors’ notes are worthless as data of anthecology because the collector is looking out for particular kinds of insects and not for all of the kinds which CHARLES ROBERTSON 5 occur on the flowers. They are worthless as data of insect habits because the collector is certain to select the flowers which are most favorable for observation and which are most attractive to the kinds of insects he is after. Collectors’ notes almost invariably fail to indicate what the insects are doing on the flowers and whether they affect pollination or not. The following persons made additions to the local lists of the plants mentioned—Prof. I. H. Benham: Blephilia hirsuta, Eupa- torium perfoliatum, Teucrium canadense; George T. Palmer: . Erigeron ramosus, Stachys palustris; Robertson Palmer: Lllisia nyctelaea, Hypoxis hirsuta, Polemonium reptans, Sambucus cana- densis, Scutellaria parvula; H. B. Parks: Achillea millefolium, Apocynum cannabinum, Blephilia ciliata, Cassia chamaecrista, Ceanothus americanus, Cicuta maculata, Cucurbita pepo, Eryngium yuccifolium, Eulophus americanus, Lepachys pinnata, Monarda fistulosa, Pastinaca sativa, Polygala sanguinea, Prunus americana, P. serotina, Pycnanthemum fleruosum, P. pilosum, Rhus copallina, R. glabra, Rosa humilis, R. setigera, Salix nigra, Sambucus cana- densis, Stenanthium angustifolium, Veronica virginica. In some cases the lists were based on the older nomenclature, so that I did not care to rewrite and rearrange them. In the pre- liminary list some of the later specific names are given in paren- thesis. After changing Danais archippus to Anosia plerippus it is a little tiresome to change it back to former name, and then to Danaus. Anyhow, biological nomenclature is synonymiecal, not bi- nomial. The older names usually have more important relation to anthecological literature. Authors will have to use them whether they like them or not. Often the synonymy is a subject of con- troversy. Of 455 plants mentioned here, about 70 have their names changed in Gray’s Manual. M i RYDE Net RAE GAR yt } Oe ij yy, A i 4! ALLS ARAN ‘| Ay A ,) parry APRA AN Cue We} ast LA yy A Flowers and Insects Signs, ABBREVIATIONS, Evc. ab = abundant; e=collecting pollen; ef = collecting and feeding on pollen; esp = collecting stray pollen; cult = cultivated; expl = ex- ploratory visit; f=feeding on pollen; fq=frequent; fsp = feeding on stray pollen; gn= gnawing; in cop=in copula; int = introduced, not indigenous; lp = labial palps; Ma=non-social long-tongued bee flower; Mas = social long-tongued bee flower; Mi=non-social short- tongued bee flower; Mis=social short-tongued bee flower; mp = maxillary palps; n=non-pollinating; O=ornithophilous; ol =oli- golege; Pol=polytropic; pred =predaceous; R=red and all dark colors; S=sphingophilous; se =sucking nectar and collecting pol- len; sf=sucking nectar and feeding on pollen; W =white; Y = yel- low, greenish to orange; ¢'= male; 2 = female; $= worker. When no other indications are used after a name, the insect is counted as sucking nectar legitimately and effecting pollination. Dates connected by a dash after ‘‘visitors observed’’ do not indicate the number of days, but only the period within which the observa- tions were made. Signs in parentheses after a group name mean that the signs belong to each one of the insects mentioned in the group. For example, ‘‘Halict. (?, ¢)’’ means that all of the fol- lowing Halictidae are females and all collecting pollen. After family names the ending ‘‘idae’’ is not repeated, as Halict. for Halictidae. When only one species of a genus was ob- served, the specific name is not repeated in the lists. Thus Apis = Apis mellifera 9. This avoids repeating mellifera 216 times. Four hundred and forty-four genera have only one species each, which it is not necessary to repeat. The plant mames used are those of the 7th edition of Gray’s Manual of Botany, 1908. Numbers in parentheses, for example (12: 459), refer to the titles and pages in the bibliography, or to species and individuals. GENERAL SYNONYMICAL List The following is a list of all the insects taken on flowers. It contains authors’ names which are given here once for all and are not repeated in the special lists. Names which occur often enough to justify it are abbreviated as follows:—Al.= Aldrich, Ash.= Ashmead, B. B.=Brauer and Bergenstamm, B. L.=Boisduval and Leconte, Br. =Brulle, Bs. = - ‘ 8 FLOWERS AND INSECTS—XXVI Boisduval, Bv. = Beauvois, Ce. = Cockerell, Cm. = Cramer, Cq. = Co- quillett, Cr.= Cresson, Dh. = Dahlbom, Dg. = De Geer, Dr. = Drury, Ds. = Desvoidy, Ed.= Edwards, F.= Fabricius, Fl.=Fallen, Fr. = Forster, Gn.=Guenee, Gr.=Germar, Grv.=Gravenhorst, Hb. = Hiibner, Hr.=Herbst, H. S.=Herrich Schaeffer, L= Linnaeus, Le. = Le Conte, Lp. = Lepeletier, Lw. = Loew, Mc. = Macquart, Mg. = Meigen, Ml. = Melsheimer, Nr.= Norton, Nw.= Newman, Ol. = Oli- vier, O. S.=Osten Sacken, Pe.= Packard, Pr.=Provancher, Pt. = Patten, Rb.= Robertson, Rl.=Riley, Se.=Seudder, Sm. =Smith, Ss. = Saussure, Tn.= Townsend, Wd.= Wiedemann, Wk. = Walker, WI. = Williston. Birps Trochilidae: Trochilus colubris L. LONG-TONGUED Bers. (146) Anthophoridae: Amegilla walshii Cr., Anthemoessa abrupta Say, Anthophora ursina Cr., Clisodon terminalis Cr., Emphoropsis floridana Sm.; Apidae: Apis mellifera L.; Bombidae: Bombias auricomus Rb., type, scutellaris Cr., separatus Cr., Bombus ameri- canorum F., consimilis Cr. (vagans Sm.), pennsylvanicus Dg., ridingsii Cr., (bimaculatus Cr.), impatiens Harris, Psithyrus laboriosus F., variabilis Cr.; Ceratinidae (females mixed) ; Ceratina dupla Say, Zadontomerus ealearatus Rb., type; Emphoridae: Emphor bombiformis Cr., Melitoma taurea Say; Hpeolidae: Ar- gyroselenis minimus Rb., type, Epeolus autumnalis Rb., type, bi- fasciatus Cr., coreopsis Rb. MS, interruptus Rb., type, lectoides Rb., type, pusillus Cr., Triepeolus coneavus Cr., concolor Rb., type, eressonii Rb., type, donatus Sm., helianthi Rb., type, lunatus Say, micropygius Rb., type, nevadensis Cr., pectoralis Rb., type, remi- gatus F., simplex Rb., type; Euceridae: Anthedon compta Cr., Cemolobus ipomoeae Rb., type, Epimelissodes atripes Cr., illinoensis Rb., type, obliqua Say, Florilegus condignus Cr., Melissodes agilis Cr., asteris Rb., type, autumnalis Rb., type, bimaculata Lp., boltoniae Rb., type, enici Rb., type, coloradensis Cr., comptoides Rb., type, coreopsis Rb., type, nivea Rb., type, pallida Rb., type, petalostemonis Rb., type, simillima Rb., type, trinodis Rb., type, variabilis Rb., type, vernoniana Rb., type, vernoniae Rb., type, Peponapis pruinosa Say, Tetralonia belfragei Cr., dilecta Cr. (speciosa?), dubitata Cr., ilinoensis Rb., type, robertsoni Ce., type, rosae Rb., type, Xenoglossa strenua Cr., Xenoglossodes albata Cr. ; Megachilidae: Osmiinae, Osmiini: Alcidamea simplex Cr., truncata Cr., Ashmeadiella bucconis Say, Centrosmia bucephala Cr., Cera- tosmia lignaria Say, Diceratosmia conjuncta Cr., Gnathosmia CHARLES ROBERTSON 9 georgica Cr., Hoplitis cylindricus Cr., Leucosmia albiventris Cr., Monilosmia canadensis Cr., Osmia atriventris Cr., collinsiae Rb., type, cordata Rb., type, distincta Cr., illinoensis Rb., type, pumila Cr.; Trypetini; Neotrypetes barbatus Rb., type, productus Rb., type (2 mixed with that of the next), truncatus Rb. MS, Prochelostoma philadelphi Rb., type; Megachilinae, Megachilini: Anthemois cen- tuncularis L., Chelostemoides rufimanus Rb., type, Cyphopyga mon- tivaga Cr., Megachile addenda Cr., brevis Say, generosa Cr., mendica Cr., petulans Cr., 6-dentata Rb., type, strophostylis Rb., type, Oligo- tropus campanulae Rb., type, Sarogaster georgica Cr., Sayapis pollicaris Say, pugnata Say, sayi Cr., Xanthosarus latimanus Say ; Coelioxyini: Coelioxys alternata Say, germana Cr., modesta Sm., 8-dentata Say, rufitarsis Sm., sayi Rb., type; Melectidae: Melecta interrupta Cr., Bombomelecta thoracica Cr.; Nomadidae: Centrias americanus Kirby, erigerontis Rb., type, Cephen texanus Cr., Gnathias cuneatus Rb., type, ovatus Rb., type, xanthoparius Rb. MS, Heminomada obliterata Cr., Holonomada affabilis Cr., placida Cr., superba Cr., vincta Say, Nomada cressonii Rb., type, denticulata Rb., type, illinoensis Rb., type, parva Rb., type, salicis Rb., type, sayi Rb., type, simplex Rb., type, vicina Cr., Phor integer Rb., type, Xanthidium dentariae Rb., type, luteoloides Rb., type, luteolum OL. ; Pasitidae: Holcopasites heliopsis Rb., type, illinoensis Rb., type; Stelididae: Anthidiinae, Anthidiini: Anthidium cognatum Cr., psoraleae Rb., type, Dianthidium boreale Rb. type; Stelidini: Chelynia foederalis Sm., Microstelis lateralis Cr., Stelidium try- petinum Rb., type; Xylocopidae: Xylocopa virginica Dr. SHORT-TONGUED Brees. (151) Andrenidae: Andrena arabis Rb., type, earlini Ce., type, corni Rb., type, dunningii Ce., erythrogastra Ash., erythronii Rb., type, geranii Rb., type, illinoensis Rb., type, macoupinensis Rb., type, mandibularis Rb., type, nasonii Rb., type, nigrae Rb., type, nothos- cordi Rb., type, nubecula Sm., paniculatae Rb., MS, platyparia Rb. (integra Sm.), pruni Rb., type, salicacea Rb., type, salicis Rb., type, salictaria Rb., type, sayi Rb., type, tridens Rb., type, Iomelissa violae Rb., type, Opandrena cressonii Rb., type, dubia Rb., type, miserabilis Cr., personata Rb., type, serotina Rb., type, ziziae Rb., type, Parandrena andrenoides Cr., Pterandrena aliciae Rb., type, asteris Rb., type, helianthi Rb., type, krigiana Rb., type, lauracea Rb., type, pulchella Rb., type, rudbeckiae Rb., type, solidaginis Rb., type, Ptilandrena erigeniae Rb., type, g. maculati Rb., type, pole- monii Rb., type, Trachandrena eclaytoniae Rb., type, crataegi Rb., type, forbesii Rb., type, heraclei Rb., type, hippotes Rb., type, 10 FLOWERS AND INSECTS—XXVI mariae Rb., type, nuda Rb., type, obscura Rb., type, quintilis Rb., type, rugosa Rb., type, spiraeana Rb., type; Colletidae: Colletes aestivalis Pt., albescens Cr., americanus Cr., armatus Pt., brevicor- nis Rb., type, compactus Cr., eulophi Rb., type, inaequalis Say, lati- tarsis Rb., type, nudus Rb., type, productus Rb., type, robertsonii Dalla Torre, type, similis Rb., type, speciosus Rb., type, willistonii Rb., type; Dufoureidae: Halictoides marginatus Cr.; Halictidae: Agapostemon radiatus Say, splendens Lp., texanus Cr., viridulus F. (virescens F.), Augochlora fervida Sm., viridula Sm., Chlora- lictus albipennis Rb., type, caeruleus Rb., type, coreopsis Rb., type, eressonii Rb., type, foveolatus Rb., type, illinoensis Rb., type, nymphaearum Rb., type, obscurus Rb., type, pilosus Sm., pruinosus Rb., type, smilacinae Rb., type, sparsus Rb., type, tegularis Rb., type, testaceous Rb., type, versatus Rb., type, zephyrus Sm., Curti- sapis coriacea Sm., forbesii Rb., type, fuscipennis Sm., Dialictus anomalus Rb., type, Evylaeus arcuatus Rb., type, foxii Rb., type, nelumbonis Rb., type, pectinatus Rb., type, pectoralis Sm., 4-macu- latus Rb., type, truncatus Rb., type, Halictus lerouxii Lp., paral- lelus Say, Odontalictus ligatus Say, Oxystoglossa confusa Rb., type, pura Say, similis Rb., type, Paralictus cephalicus Rb., type, platy- parius Rb., type, simplex Rb., type, Seladonia fasciata Nylander ; Sphecodini: Dialonia antennariae Rb., type, Drepanium falciferum Pt., Machaeris illinoensis Rb., type, stygia Rb., type, Proteraner ranunculi Rb., type, Sphecodes arvensis Pt., clematidis Rb., type, heraclei Rb., type, minor Rb., type, Sphecodium cressonii Rb., type, pimpinellae Rb., type, pyenanthemi Rb., type, smilacinae Rb., type; Macropididae: Macropis steironematis Rb., type; Nomiidae: Para- nomia nortonii Cr.; Panurgidae: Anthemurgus passiflorae Rb., type, Calliopsis andreniformis Sm., coloradensis Cr., Heterosarus parvus Rb., type, Perdita 8-maculata Say, Perditella boltoniae Rb., type, Pseudopanurgus albitarsis Cr., asteris Rb., type, composi- tarum Rb., type, labrosiformis Rb., type, labrosus Rb., type, rud- beckiae Rb., type, rugosus Rb., type, solidaginis Rb., type, Ver- benapis verbenae Ce., Zaperdita maura Ce.; Prosopididae: Prosopis erataegi Rb. MS, eulophi Rb., type, illinoensis Rb., type, nelumbonis Rb., type, pygmaea Cr., saniculae Rb., type, sayi Rb., type, thaspii Rb., type, ziziae Rb., type. OTHER HYMENOPTERA. (367) Bembicidae: Bembix nubillipennis Cr., spinolae Lp., Bicyrtes 4-fasciata Say, ventralis Say, Megastizus brevipennis Walsh, Micro- bembex monodonta Say, Sphecius speciosus Dr., Stictia carolina F., Stictiella pictifrons Sm., Stizus unicinctus Say; Bethylidae: CHARLES ROBERTSON 11 Goniozus cellularis Say; Braconidae (including Alysiidae and Vipi- onidae): Aenignostomus longipalpus Cr., Agathis areolata Ash., type, vulgaris Cr., Apanteles crassicornis Pr., illinoensis Ash. MS, terminalis Gahan, Bassus sanctus Say, Bracon ashmeadi Morrison, type, longicauda Pr., simplex Cr., trifolii Ash. (pygmaeus Pr.), vernoniae Ash. (mellitor Say), Cardiochiles tibiator Say, Chelonus sericeus Say, Dacnusa flavicincta Ash., Earinus limitaris Say, Euphorus mellipes Cr., Habrobracon gelechiae Ash., Iphiaulax rugator Say, Macrodyetium apicatus Pr., Microbracon tortricicola Ash. (variabilis Pr.), Microdus simillimus Cr., Microgaster gele- chiae R1., Microplitis ceratomiae Rl., croceipes Cr., gortynae RL, Monogonogastra fuscipennis Ash. MS, Opius fuscipennis Gahan, ruficeps Pr. (provancheri Dalla Torre), Orgilus rileyi Ash. (divisus Cr.), Toxoneuron abdominale Cr., viator Say, Urosigalphus femor- atus Ash., Vipio robertsonii Ash. MS; Chalcididae (including Elasmidae, Encyrtidae, Eulophidae, Eurytomidae, Leucospidae, Perilampidae, Pteromalidae): Bruchophagus funebris Howard, Chaleis flavipes F. (ovata Say), Chrysocharis oscinidis Ash., Elas- mus nigripes Howard, Eurytoma diastrophi Walsh, studiosa Say, Eutelus flavipes Wk., Eutrichosoma mirabilis Ash., Haltichella ornata Wk., xanticles Wk., Leucospis affinis Say, Pachyneuron mesograptae Ash., Perilampus cyaneus Br., fulvicornis Ash., hya- linus Say, platygaster Say, robertsoni Crawford, type, triangularis Say, Smicra debilis Say, torvina Cr., Syntomopus americanus Ash. ; Crysididae: Chrysis intricata Br., texana Gribodo, Gonochry- sis perpulchra Cr., Hedychridium dimidiatum Say, Hydychrum parvum Aaron, violaceum Br., wiltii Cr., Holochrysis hilaris Dh., verticalis Pt., Holopyga ventralis Say, Monochrysis parvula F., Notozus hyalinus Aaron, Tetrachrysis caerulans F., montana Aaron, nitidula F., nortonii Aaron, venusta Cr.; Crabronidae: Anacrabro ocellatus Pe., Blepharipus harringtonii Fox, Clytochrysus obscurus Sm., Ectemnius atriceps Cr., Entomognathus texanus Cr., Hypo- crabro 10-maculatus Say, Lindenius errans Fox, robertsoni Rohwer, type, Lophoerabro singularis Sm., Protothyreopus bigeminus Pt., rufifemur Pe., Pseudocrabro chrysargirus Lp., Rhopalum pedicel- latum Pe., scutellatum Say, Solenius interruptus Lp., Synothyre- opus tumidus Pe., Xestocrabro 6-maculatus Say, texanus Cr., trifasciatus Say; Eumenidae: Ancistrocerus campestris Ss., capra Ss., catskillensis Ss., tigris Ss., unifasciatus Ss., Eumenes belfragei Cr., fraternus Say, Leionotus anormis Say, arvensis Ss., elypeatus Rb., type, dorsalis F., foraminatus Ss., fulvipes Ss., fundatus Cr., histrionalis Rb., type, illinoensis Rb., type, leuacomelas Ss., megaera Lp., molestus Ss., perennis Ss., 4-sectus Say, serophulariae Rb. MS, 12 FLOWERS AND INSECTS—XXVI vagus Ss., ziziae Rb. MS, Monobia 4-dens L., Pterochilus 5-fasciatus Say, Symmorphus debilis Ss., walshianus Ss., Zendalia (MS) alecol- huus Ss., zendaloides Rb., type, Zethus spinipes Say; Evanudae: Foenus incertus Cr., tarsatorius Say, Hyptia reticulata Say; Figi- tidae: Aspicera albihirta Ash., Cothonaspis stigmata Say, Eucoila mellipes Say, Eucoilidia canadensis Ash., Figites impatiens Say, 5-lineata Say, Psilodora erythropus Ash., impatiens Say, Tri- rhoptrasema ashmeadi Rohwer and Fagan, Xyalosema armata Say; Formicidae: Camponotus castaneus Latr., herculanus L., Formica fusea L., rufibarbis F., schaufussi Mayr, Lasius niger L., Tapinoma sessile Say ; Myrmicidae: Cremastogaster lineolata Say ; Ichneumon- idae: Agrothereutes limatus Cr., mundus Pr., Angitia obscura Cr., Bathycetes scutellaris Cr., Ceratosoma fasciata Cr. (ornata Say), Colpognathus helvus Cr., Cremastus epagoges Cushman, retiniae Cr., Cryptus exulans Cr., persimilis Cr., rufoannulatus Pr., Diplazon sycophanta Walsh, Eiphosoma texana Cr., Exetastes obseurus Cr., suaveolens Walsh, Exyston abdominalis Cr., Gambrus albonotatus Pr., apicatus Pr., Glypta rufiscutellaris Walsh, simpli- cipes Cr., Hemiteles gracilariae Ash., Ichneumon flavizonatus Cr., funestus Cr. (laetus Br.), jucundus Br., longulus Cr., suecinetus Br., Idiolespa analis Grv. (limatus Cr.), Lampronota americana Cr., coxalis Ash. MS, varia Cr., Limneria eurycreontis Ash., fura Cr., Lissonota tricincta Ash. MS, Metopius polycinctorius Say, terminalis Ash. (seminiger Cr.), Ophion bifoveolatum Br., Phar- salia virginiensis Cr., Phygadeuon vulgaris Cr., Pimpla annulipes Br., marginata Pr., notanda Cr., novita Cr., Polyblastus citripes Ash. MS, Polysphincta slossonae Davis, Porizon albipennis Cr., conotracheli RI., Proclitus mellipes Pr., Trogus vulpinus Grv., Tryphon affinis Cr.; Larridae: Astatus bicolor Say, unicolor Say, Larra analis F., Larropsis distincta Sm., Lyroda subita Say, Notogonidea argentata Bv., Tachysphex acutus Pt., belfragei Cr., mundus Fox, tarsatus Say, terminatus Sm., Tachytes aurulentus F., distinctus Sm., elongatus Cr., harpax Pt., maestus Mikel, mandi- bularis Pt., mergus Fox, obscurus Cr., pepticus Say, sericatus Cr.; Mutillidae (%): Mutilla hexagona Say, sayi Blake, scrupea Say, Pseudomethoca canadensis Blake, Sphaerophthalma macra Cr.; Myrmosidae: Myrmosa parvula Fox, type, unicolor Say; Nysson- idae: Alyson trianguliferus Pe., Hoplisoides nebulosus Pe., Hop- lisus atricornis Pe., simillimus Sm., Nysson plagiatus Cr., rufiven- tris Cr., Zanysson aurinotus Say, plesia Rohwer, Pseudoplisus divisus Sm., phaleratus Say, Silaon inerme Cr.; Oxybelidae: Notoglossa americana Rb., type, cressonii Rb., type, emarginata Say, frontalis Rb., type, inornata Rb., type, Oxybelus laetus Say, CHARLES ROBERTSON 13 niger Rb., type, packardii Rb., type, 4-notatus Say; Pemphredon- idae: Cemonus inornatus Say, Mimesa cressonii Pe., Psen tibialis Cr.; Philanthidae (including Cerceridae) : Cerceris astarte Banks, bicornuta Guerin, clypeata Dh., compacta Cr., compar Cr., echo Mickel, finitima Cr., fulvipes Cr. (fulvipediculata Schlet.), fumi- pennis Say, insolita Cr., kennicottii Cr., prominens Banks, raui Rohwer (frontata Say?), robertsonii Fox, cotype, rufinoda Cr., Eucerceris zonatus Say, Philanthus politus Say, punctatus Say, ventilabris F.; Pompilidae: Ageniella accepta Cr., longula Cr., petiolata Cr., Anoplius illinoensis Rb., type, virginiensis Cr., Arachnoproctonus ferrugineus Say, Batizonus algidus Sm., Cero- pales bipunctata Say, elegans Cr., fraterna Sm., fulvipes Cr., robinsonii Cr., Cryptocheilus agenioides Fox, conicus Say, fulgifrons Cr., Episyron biguttatus F., Lophopompilus atrox Dh., philadel- phicus Lp., Planiceps feralis Cr., niger Cr., Poecilopompilus inter- ruptus Say, navus Cr., Pompiloides americanus By., divisus Cr., marginatus Say, subviolaceus Cr., Priocnemis arcuatus Banks, Priocnemoides fulvicornis Cr., terminatus Say, unifasciatus Say, Psammochares pretiosa Banks, relativus Fox, colype, scelestus Cr., tenebrosus Cr., Pseudagenia mellipes Say, Sophropompilus in- genuus Cr.; Sapygidae: Sapyga centrata Say; Scelionidae: Prosa- cantha illinoensis Ash. MS, Teleas lineaticeps Ash.; Scoliidae: Campsomeris confluenta Say, Elis interrupta Say, obscura F., thoracica Fox, type, 5-cineta F., Scolia bicincta F., nobilitata F.; Sphecidae: Ammobia ichneumonea L., nuda Fernald, pennsyl- vanica L., Chalybion caeruleum L., Chlorion caeruleum Dr., Iso- dontia apicalis Sm., macrocephala Fox, Palmodes dimidiata Dg., Priononyx atrata Lp., thomae F., Sceliphron cementarius Dr., Sphex gracilis Lp., nigricans Dh., pictipennis Walsh, procera Klug, vulgaris Cr.; Tenthredinidae (including Xyelidae): Dolerus aprilis Nr., arvensis Say (unicolor Bv.), bicolor Bv., sericeus Say, Hylotoma humeralis Bv., macleayi Leach, Macrophya epinota Say, pleuricincta Nr. (nebraskensis Rohwer), Macroxyela ferruginea Say, Monophadnus medius Nr., Nematus luteotergum Nr., verte- bratus Say, Opisthoneura albidovariata Nr., Pseudosiobla excavata Nr.; Thynnidae: Methoca stygia Say; Tiphiidae: Tiphia clypeata Rb., type, illinoensis Rb., type, inornata Say, punctata Rb., type, robertsoni Malloch, type, transversa Say, vulgaris Rb., type; Tryporylidae: Trypoxylon clavatum Say, frigidum Sm., triden- tatum Pe.; Vespidae: Polistes annularis L., pallipes Lp., rubi- ginosus Lp., variatus Cr., Vespula cuneata F., germanica F., maculata L., vidua Ss. 14 FLOWERS AND INSECTS—XXVI DipreraA. (446) Agromyzidae: Agromyza aeneoventris Fl., latipes Mg., Aulaci- gaster rufitarsis Mc., Eusiphona mira Cq., Leucopis nigricornis Egger (americana Malloch), Lobioptera indecora Lw., Milichiella lucidula Beck, Phytomyza palpalis Cq. MS.; Anthomyidae: An- thomyia pluvialis L., radicum L., Anthomyiella pratincola Panzer, Calythea albicinecta Fl., Coenosia antennalis Stein, antica Wk. (leucoprocta Wd.), fuscopunctata Me. (ovata Stein), lacteipennis Mg., sexnotata Mg., Hammomyia paludis Johansen, Homalomyia canicularis L., prostrata Rossi (incisurata Zett.), Hydrophoria ambigua F1., Hydrotaea houghi Malloch, Hyetodosia rufitibia Stein, Hylemyia dilatata Malloch, inornata Stein, juvenalis Stein, laevis Stein, plumosa Cq., type, Limnophora narona Wk., Lispa albitarsis Stein, consanguinea Lw., uliginosa Fl., Mydaea diruta Stein, fusca Stein, socialis Stein, Ophyra leucostoma Wd., Phorbia acra WE., cinerella F., platura Mg., Proboscimyia siphonina Bigot; Bibionidae: Bibio albipennis Say, femoratus Wd., pallipes Say, Dilophus obesulus Lw., serotinus Lw., Scatopse notata L., pulicaria Lw., Bombyliidae: Aldrichia ehrmanii Cq., Anthrax alternata Say, fulvohirta Wd., haleyon Say, hypomelas Mce., palliata Lw., parvi- cornis Lw., sinuosa Wd., Argyramoeba albofasciata Mc., oedipus F., Bombylius atriceps Lw., azaleae Shannon, major L., pulchellus Lw., Exoprosopa decora Lw., emarginata Me., fasciata Mce., fasci- pennis Say, Geron calvus Lw., rufipes Mc., Lepidophora lepidocera Wd., Oncodocera leucoprocta Wd., Phthiria aldrichi Johnson, eincta Cq. MS, sulphurea Lw., Sparnopolius fulvus Wd., Systoechus vulgaris Lw., Systropus macer Lw., Thlipsogaster ater Cq., Toxo- phora amphitea Wk., Borboridae: Borborus equinus Fl.; Chiron- omidae: Ceratopogon fusculus Cq., websteri Cq., Conopidae: Conops brachyrrhynchus Me., sylvosus WI1., xanthopareus WL, Dalmannia nigriceps Lw., Myopa pilosa WI. vesiculosa Say, Oncomyia loraria Lw., Physocephala texana WI., tibialis Say, Robertsonomyia palpalis Rb., type, Stylogaster biannulata Say, neglecta W1., Zodion fulvifrons Say, nanellum Lw., obliquefasciatum Me.; Culicidae: Aedes vexans Mg., Culex impiger Wk. (nigripes Zett.), stimulans Wk. (cantans Mg.) ; Dexiidae: Myocera cremides Wk., Ptilodexia abdominalis Ds., Scotiptera parvicornis Tn. MS; Drosophilidae: Drosophila varia Wk.; Empididae: Brachystoma robertsonii Cq., type, Empis avida Cq., type, compta Cq., distans Lw., humilis Cq., type, levicula Cq., type, loripedis Cq., type, nuda Lw., otiosa Cq., type, Pachymeria pudica Lw., Parempis (MS) clausa Cq., Rhamphomyia angustipennis Lw., exigua Lw., fumosa CHARLES ROBERTSON 15 Lw., gilvipilosa Cq., type, irregularis Lw., limbata Lw., mutabilis Lw., piligeronis Cq., type, priapulus Lw., rava Lw., ravida Cq., type, sordida Lw., tersa Cq., Tachydromia pusilla Lw., Ephydridae ; Notiphila unicolor Lw., Ochthera lauta Wheeler, pred.; Hetero- neuridae: Clusia lateralis Wk.; Leptidae: Hilarimorpha mikii W1., type; Lonchaeidae: Lonchaea parvicornis Mg., aberrans Malloch, cotype; Midaidae: Midas clavatus Dr., tibialis Wd.; Muscidae: Compsomyia macellaria F., Graphomyia americana Ds. (maculata Seopoli), Lucilia caesar L., sericata Mg., sylvarum Mg., Morellia micans Mc., Musea domestica L., Muscina assimilis Fl., Myospila meditabunda F., Phormia regina Mg., terraenovae Ds., Pollenia rudis F., Protocalliphora splendida Me., Pseudopyrellia cornicina F., Stomoxys ealcitrans L.; Mycetophilidae: Dynatosoma thoracica Cq., type, Eugnoriste occidentalis Cq., Sciara atrata Say, inconstans Fitch, vulgaris Fitch; Nemestrinidae: Rhynchocephalus sackeni WL; Ortalidae: Camptoneura picta Me., Chaetopsis aenea Wd., Euxesta notata Wd., Rivellia pallida Lw., 4-fasciata Mce., viridulans Ds., Seoptera colon Lw.; Oscinidae: Chlorops approximatonervis Zett., assimilis Me., mellea Lw., proxima Say, pulverea Cq., versi- color Lw., Elachiptera costata Lw., flavida W1., Hippelates flavipes Lw., plebejus Lw., pusio Lw., Meromyza americana Fitch, Oscinis coxendix Fitch, soror Me., trigramma Lw., Siphonella cinerea Lw., inquilina Cq., oscinina Fl. ; Phoridae: Phora fungicola Cq., Trineura aterrima F.; Pipwnculidae: Chalarus spurius FI. ; Psilidae: Chyliza apicalis Lw.; Sapromyzidae: Sapromyza longipennis F., vulgaris Fitch; Sarcophagidae (Calliphora and Cynomyia belong to Musci- dae): Boettcheria cimbicis Tn., Calliphora erythrocephala Mg., vomitoria L., Cynomyia ecadaverina Ds., Helicobia helicis Tn., 4-setosa Cq., Metoposarcophaga pachyprocta Parker, Sarcophaga aleedo Al., aldrichi Parker, assidua Wk., bullata Parker, cimbicis (pallinervis Thompson), dux sarracenioides Al., haemorrhoidalis F1., hunteri Hough, impar Al., marginata Al., sinuata Mg., utilis Al.; Scatophagidae: Cordylura munda Lw., Scatophaga fureata Say; Scenopinidae: Scenopinus nubillipes Say; Sciomyzidae: Sciomyza humilis Lw., Tetanocera pictipes Lw. (umbrarum L.) ; Sepsidae: Nemopoda minuta Wd., Piophila casei L., Prochyliza xanthostoma Wk., Sepsis violacea Mg., Themira putris Lw.; Simuliidae: Simulium pecuarum RL; Stratiomyidae: Allognosta fuscitarsis Say, obsecuriventris Lw., Microchrysa polita L., Nemotelus glaber Lw., Odontomyia cincta Ol., nigrirostris Lw., pubescens Day, Sargus viridis Say, Stratiomyia apicula Lw., dis- ealis Lw., meigenii Wd., quaternaria Lw., unilimbata Lw.; 16 FLOWERS AND INSECTS—XXVI Syrphidae: Allograpta obliqua Say, Baccha aurinota Wk. (fasci- pennis’ Wd.), clavata F., fuscipennis Say, tarchetius Wk., Brachyopa vacua O. S., Brachypalpus frontosus Lw. (oarus Wk.), rileyi WI. (metallifera Bigot}, Ceria abbreviata Lw., Chaleomyia aerea Lw., Chilosia capillata Lw. (caltha Shannon), cyanescens Lw., pallipes Lw., petulea W1., puctulata Hunter, Chrysochlamys dives O. S., Chrysogaster nigripes Lw., ontario Curran, Criorhina decora Me., intersistens Wk., umbratilis WI., Didea fasciata fuscipes Lw.; Eristalis aeneus Scopoli, bastardi Me., brousi WI. (meigenii Wd.), dimidiatus Wd., flavipes Wk., latifrons Lw., tenax L., transversus Wd., vinetorum F., Helophilus divisus Lw., laetus ~ Tia latifrons Lw., ailie Me. Maligia cimbiciformis F'l., illinoetieta Rb., type, stents F Uy ieleabe toes mellinum L., obseurnel Say, MErapiondns villosus Bigot, Mesogramma irate Say, marginata Say, polita Say, Milesia ornata F. (virginiensis Dr.), Myiolepta nigra Lw., strigilata Lw., varipes Lw., Orthoneura nitida Wd., pictipennis Lw., Paragus bicolor F., tibialis Fl./ Pipiza femoralis Lw., festiva Mg. (albipilosa W1.), nigribarba Liw. (apisaon Wk.), pistica W1., pubescens Lw., pulchella WI. (Pipizella banksi Cur- ran), Platychirus hyperboreus Staeger, quadratus Say/ Psilota buceata Me., Pterallastes thoracicus Lw., Rhingia nasica Say, Sericomyia chrysotoxoides Me., Sphaerophoria cylindrica Say, Sphegina campanulata Rb., type, rufiventris Lw., Spilomyia hami- fera Lw., longicornis Lw., 4-fasciata Say, Syritta pipiens L., Syrphus americanus Wd., arcuatus FI., ribesii F., torvus O. S., Temnostoma trifasciata Rb., type, Teuchocnemis lituratus Lw., Tropidia albistylum Me., mamillata Lw., quadrata Say, Volucella evecta Wk., fasciata Mc., vesiculosa F., Xanthogramma emarginata Say, felix O. S., flavipes Lw., Xylota angustiventris Lw., bicolor Lw., chalybea Wd., fraudulosa Lw. (baton Wk.) ;/ Tabandae: Chrysops indus O. S., striatus O. S., Tabanus lineola F., Therio- plectes illotus O. S.; Tachinidae: Actia pilipennis Fl., Alophora aeneoventris WI1., fumosa Cq., grandis Cq., cotype, pulverea Cq., Amobia distineta Tn., type, Apinops atra Cq., type, Araba tergata Cq., Archytas analis F., aterrima Ds., hystrix F., Belvosia bifasciata F., unifasciata Ds., Biomyia georgiae B. B., Blepharipeza leuco- phrys Wd., Brachycoma intermedia Tn., type, sarcophagina Tn., type, Celatoria diabroticae Shimer, Ceratomyiella conica Tn., type, Chaetogaedia analis Wulp (aeroglossoides Tn., type), erebra Wulp, Chaetophleps setosa Cq., Chaetoplagia atripennis Cq., Cistogaster occidua Wk., pallasii Tn. Clytiomyia flava Tn., type, Crypto- meigenia theutis Wk., Cyphocera fucata Wulp, Distichona auriceps Cq., varia Wulp, Ennyomma clistoides Tn., type, globosa Tn., CHARLES ROBERTSON 17 nigrifrons Tn., type, Hpalpus signiferus Wk., Epigrimyia floriden- sis Tn., geniculata Tn., type, illinoensis Rb., type, polita Tn., Euacemyia tibialis Cq., Eumyotheria illinoensis Tn., type, Euphorocera cinerea Wulp, claripennis Me. (edwardsii W1.), Euryceromyia robertsonii Tn., type, Euthera tentatrix Lw., Ex- orista confinis F'., nigripalpis Tn., pyste Wk., Frontina aletiae RL., archippivora Wk., frenchii W1., Gonia capitata Dg., exul WL, Gymnochaeta aleedo Lw., Gymnoprosopa clarifrons Tn., type, Gymnosoma fuliginosa Ds. Hilarella aristalis Cq., type, Hyalomyodes triangulifera Lw., Hyalurgus johnsoni Tn., Hypostena barbata Cq., dunningii Cq., indecisa Tn., type, variabilis Cq., Leskia analis Cq. (similis Tn.), Leskiomima prima Rb. MS, secunda Rb., MS, Leucostoma atra Tn., type, neomexicana Tn., nigricornis Tn., siphonina Rb. MS, Linnaemyia compta F'l., Macquartia pristis Wk. (halisodotae Tn.), Masiphya brasiliana B. B., Metopia leucocephala Rossi, Neofischeria flava Tn., Ocyptera argentea Tn., nigra Al., dosiades Wk., lata Rb. MS (vulgaris Al.), tenuis Kb. MS (euchenor Wk.) Opsidia gonioides Cq., Pachyophthalmus floridensis Tn., signatus Mg. (mixed with distortus, aurifrons Tn., type), Panzeria radicum F. (aldrichi Tn.), Paradidyma singularis Tn., type, Peleteria robusta Wd., Phasioclista metallica Tn., type, Phorantha asteris Rb. MS, humeralis Rb., type, magna Rb. MS, purpurascens Tn., type, robertsonii Tn., type, Phorichaeta sequax WL, Phyto clesides Wk. (anomala Tn.), Polidea areos Wk. (ameri- eana Tn., type), Senotainia rubriventris Me., trilineata Wulp, Siphona geniculata Dg., Siphoplagia anomala Tn., flaccidirostris Rb. MS, Spallanzania hesperidarum W1., Sturmia distincta Wd., fraudulenta Wulp, inquinata Wulp, nigrita Tn., type, phyciodis Cq., Tachina mella Wk., robusta Tn., rustica Fl., Trichopoda lanipes F., pennipes F., plumipes F. (trifasciata Lw.), Trichophora ruficauda Wulp, Viviania lachnosternae Tn., Winthemia 4-pustu- lata F., Xanthomelana areuata Say; Tipulidae: Geranomyia cana- densis Westwood; Trypetidae: Euaresta aequalis Lw., bella Lw., Plagiotoma obliqua Say, Trypeta culta Wd., finalis Lw., humilis Lw., solaris Lw. LepmpopTeraA. (99) Agaristidae: Alypia octomaculata F.; Arctiidae: Callimorpha fulvicosta Clemens (colona Hb.), Utetheisa bella L.; Ctenuchidae: Scepsis fulvicollis Hb. ; Crambidae: Crambus laqueatellus Clemens. ; Hesperiidae: Achalarus lycidas 8S. & A., Amblyscirtes samoset (hegon) Se., Ancyloxypha numitor F., Atalopedes huron Ed. (campestris Bs.), Atrytone delaware (logan) Ed., zabulon B. L., 18 FLOWERS AND INSECTS—XXVI Epargyreus tityrus F., Euphyes metacomet Harris (vestris Bs.), verna Ed., Hesperia montivaga Reakirt (syrichtus F.), Hylephila phylaeus Dr., Limochores manataaqua Se., taumas F. (cernes B. L.), Pamphila dion Ed., hobomok Hr., Pholisora catullus F., hay- hurstii Ed., Polites peckius Kirby, Thanaos brizo B. L., icelus Lint- ner, juvenalis F., martialis Se., persius Se., Thorybes bathyllus (daunus Cm.), pylades Se.; Lycaenidae: Chrysophanus thoe B. L., Cyaniris pseudargiolus B. L., Eupsyche m-album B. L., Everes comyntas Godart, Heodes hypophlaeas Bs., Strymon titus F., Thecla calanus Hb., sylvinus Bs. (acadica Ed.), Uranotes melinus Hb.; Noctwidae: Acontia candefacta Hb., Agrotis ypsilon Rott. Carneades velleripennis Grote, Drasteria erechtea Cm., erichto Gn. (erassiuscula Haw.), Feltia subgothica Stephens (ducens Wk.), Heliothis armiger Hb. (obsoleta F.), dipsaceus L. (phloxiphaga G. & R.), Leueania albilinea Hb., Plusia precationis Gn., simplex Gn. (faleifera Kirby), Schinia jaguarina Gn., Spragueia leo Gn.; Nymphalidae: (including Danaidae, Satyridae, Libytheidae) : Anosia plexippus L. (Danaus archippus F.), Argynnis cybele F. (mixed with aphrodite F.), Basilarchia archippus Cm., astyanax F., Cereyonis alope F., Charidryas nyeteis D. & H., Euphydryas phaeton Dr., Euptoieta claudia Cm., Euvanessa antiopa L., Hypatus bachmanni Kirt., Junonia coenia Hb., Neonympha eurytus F., Phyciodes tharos Dr., Polygonia comma Harris, interrogationis F., Speyeria idalia Dr., Vanessa atalanta L., cardui L., huntera F. (virginiensis Dr.) ; Papilionidae: (including Pieridae) : Callidryas eubule L., Euphoeades troilus L., Eurema lisa B. L. (euterpe Men.), Eurymus philodice Godart (mixed with eurytheme), Heraclides cresphontes Cm., Iphiclides ajax L. (marcellus Cm.) Jasoniades glaucus L., Laertias philenor L., Nathalis iole Bs., Papilio asterias F. (polyxenes F.), Pieris repae L., Pontia protodice B. L., Xanthidia nicippe Cm., Zerene caesonia Stoll; Pyraustidae: Loxostege similalis Gn., Nomophila noctuella Voll.; Pyromorphidae: Harrisina ameri- cana Guerin; Sestidae: Carmenta pyralidiformis Wk., Sesia pictipes G. & R., 6-fasciata Ed. (bassiformis Wk.) ; Sphingidae: Chaero- campa tersa L., Deilephila lineata F., Hemaris axillaris G. & R. (diffinis Bs.), thysbe F., Philampelus pandorus Hb. (satellitia Dr.), Protoparce celeus Hb. (5-maculata Haw.), Sphinx eremitus Hb. CoLEOPTERA. (153) Anthicidae: Corphyra labiata Say, terminalis Say; Bruchidae: Bruchus bivulneratus Horn, cruentatus Horn, discoideus Say, exiguus Horn (horni Pic.), hibisci Ol., mimus Say, musculus Say, obsoletus Say (obtectus Say); Buprestidae: Acmaeodera culta CHARLES ROBERTSON 19 Weber (tubulus F.), pulchella Hr., Agrilus difficilis Gory, egenus Gory; Calandryidae: Rhodobaenus 13-punctatus Ll.; Carabidae: Callida punctata Le., Lebia viridis Say ; Cerambycidae: Acmaeops nigripennis Le., directa Nw., Batyle suturalis Say, Callimoxys fusci- pennis Le., sanguinicollis Ol., Cyllene decorus Ol., robiniae Fr., Euderces picipes F., Leptura exigua Nw., pubera Say, vittata Gr., Molorchus bimaculatus Say, Strangalia famelica Nw., Tetraopes tetraophthalmus Fr., Typocerus badius Nw., lugubris Say, sinuatus Nw., velutinus Ol.; Chrysomelidae: Anomoea laticlavia Fr., Babia 4-guttata Ol., Cerotoma caminea F. (trifurcata Fr.), Chrysomela similis Rogers, Cryptocephalus insertus Hald., Diabrotica atripennis Say, 12-punctata F., longicornis Say, vittata F., Disonycha limbi- collis (pennsylvanica) pallipes Crotch, Galeruca tuberculata Say, Glyptina spuria Le., Haltica carinata Gr., Lina lapponica L., Luperaltica fuscula Le., Mantura floridana Crotch, Orsodachna atra Ahrens, Pachybrachys atomarius M1., Rhabdopterus picipes O1., Trirhabda tomentosa L.; Cleridae: Enoplium 4-punctatum Say; Coccinellidae: Coccinella 9-notata Hr., sanguinea L., Hippodamea glacialis F., parenthesis Say, 15-maculata Mul. (convergens Guerin), 13-punctata L., Megilla maculata Dg. (fuscilabris Mul.), Seymnus consobrinus Le., terminatus Say; Curculionidae: Apion nigrum Hr., Centrinites strigicollis Casey, Centrinus perscillus Gyll., picumnus Hr., scutellum-album Say, Idiostethus subcalvus Le., tubulatus Say, Limnobaris prolixa Le., Listronotus caudatus Say; Dermestidae: Anthrenus musaeorum L. (castaneae M1.), serophulariae L., Attagenus piceus Ol., Cryptorhopalum haemor- rhoidale Le., triste Le., Orphilus glabratus F. (ater Er.) ; Elateri- dae: Agriotes insanus Candeze, Limonius griseus By. (propexus Candeze), Melanotus communis Gyll., Sericosomus silaceus Say; Erotylidae: Languria mozardi Latr.; Histeridae: Hister americanus Paykull, subrotundus Say ; Lampyridae: Calopteron reticulatum F., Chauliognathus marginatus F., pennsylvanicus Dg., Ditemnus bidentatus Say, Ellychnia corrusca L., Photinus pyralis L., Poda- brus brunnicollis Le., rugulosus Le., tomentosus Say, Pyractomena angulata Say, Telephorus bilineatus Say, dentiger Le., flavipes Le., scitulus Say; Latridiidae: Corticaria distinguenda Comolli; Mela- chidae: Anthocomus erichsoni Le., Attalus scincetus Say, Collops 4-maculatus F., Melyris cribrata Le. ; Melandryidae: Canifa pallipes Ml., Nothus varians Le.; Meloidae: Epicauta cinerea Fr., pennsyl- vanica Dg., trichrus Pallas, vittata Fr., Macrobasis unicolor Kirby, Nemognatha vittigera Le., Pyrota germari Haldeman, mylabrina Chevrolat, terminata Le.; Mordellidae: Mordella marginata ML., meldena Gr., 8-punctata F., seutellaris F., triloba Say, Mordellistena 20 FLOWERS AND INSECTS—XXVI aspersa M1., biplagiata Hel., comata Le., grammica Le., limbalis ML, lutea ML., marginalis Say, ornata M1., pubescens F., tosta Le., Pen- taria trifasciata Ml.; Nitidulidae: Carpophilus brachypterus Say, Cercus abdominalis Erichson, Epurea labilis Erichson, truncatella Mannerheim ; Oedemeridae: Asclera puncticollis Say, ruficollis Say, Oxacis thoracica F.; Rhipiphoridae: Myodites fasciatus Say, Rhipi- phorus dimidiatus F., flavipennis Le., limbatus F.; Rhynchitidae: Eugnamptus angustatus Hr.; Scarabaeidae: Euphoria fulgida F., sepulchralis F., Hoplia trifasciata Say, Macrodactylus angustatus By., Onthophagus pennsylvanicus Harold, Trichius affinis Gory, piger F., Valgus canaliculatus F. HEMIPTERA. (25) Acanthudae: Triphleps insidiosus Say; Berytidae: Corizus lateralis Say, Harmostes reflexulus Say; Capsidae: Calocoris rapi- dus Say, Lopidea media Say, Lygus pratensis L., Phytocoris scrupeus Say, Plagiognathus obscurus Uhler; Coreidae: Alydus eurinus Say, pilosulus H.S., Chariesterus antennator F.; Corime- laenidae: Corimelaena lateralis F., pulicaria Gr.; Cydmnidae: Canthophorus cinctus Bv.; Lygaeidae: Lygaeus turcicus F., Melano- coryphus bicrucis Say, Oncopeltus fasciatus Dallas, Ortholomus longiceps Stal; Nabidae: Coriscus ferus L.; Pentatomidae: Euschis- tus fissilis Uhler (euschistoides Vol.), ictericus L., variolarius By., Podisus spinosus Dallas; Phymatidae: Phymata wolffii Stal, pred.; Reduvudae: Sinea diadema F. NEUROPTERA Chrysopidae: Chrysopa plorabunda Fitch. VISITORS ACANTHACEAE Dianthera americana (5: 65-6).—Blooms June 8—August 23; 58 visitors observed, June 11—July 5; Mas, R. ‘ Long-tongued Bees (24)—Ayp.: Apis ab; Bomb.: Bombias sepa- ratus §, fq, Bombus americanorum 9, impatiens 9; Ceratin.: Cera- tina ¢ 9, ab; Megachil.: Osmiini (9): Alcidamea simplex se, fq, Hoplitis sc, Osmia distincta; Megachilini: Cyphopyga J, Megachile addenda 9, se, brevis ¢, generosa 4, Sayapis pugnata ¢'; Coelioxy- ini: Coelioxys 8-dentata ¢ 9, sayi ¢' 2, fq; Nomad.: Centrias ameri- eanus 9; Epeol.: Epeolus bifasciatus ¢, Triepeolus concolor ¢ 9; Eucer.: Florilegus 4, ab, Melissodes bimaculata ¢ 9, ab, variabilis 6, Tetralonia dilecta 9, rosae ¢ 2; Anthophor.: Anthemoessa Gide 2a: CHARLES ROBERTSON 21 Short-tongued Bees (11)—Halict.: Agapostemon radiatus ¢ 9, viridulus 2, Chloralictus pilosus 9, ¢, sparsus 9, se, versatus 2, se, ab, Halictus lerouxii ¢ 2, ab, Odontalictus ¢ 2, Oxystoglossa confusa 9, se, ab, similis 9, Seladonia ¢ 9; Panurg.: Calliopsis andreniformis 3 &, ab. “Other Hymenoptera (3)—Sphec.: Sphex nigricans; Bembic: Bembix spinolae; Scoli.: Campsomeris. Diptera (12)—Syrph.: Allograpta f, n, Eristalis tenax sf, Helo- philus laetus f, n, Mesogramma marginata f, n, Sphaerophoria f, n, Syritta, Tropidia quadrata; Bombyli.: Anthrax parvicornis, Bom- bylius azaleae, atriceps fq; Conop.: Physocephala tibialis, Zodion fulvifrons. Lepidoptera (8)—Nymphal.: Charidryas; Lycaen.: Cyaniris; Papilion.: Pieris; Hesperi.: Epargyreus, Euphyes metacomet, Pholisora catullus, Thanaos martialis, Thorybes bathyllus. Ruellia ciliosa—Blooms May 26-September 20; 10 visitors ob- served, May 29—August 2; Ma, R. Long-tongued Bees (6)—Bomb.: Bombus americanorum 2 9, impatiens 9; Megachil.: Megachile brevis 9, ¢, also cutting petals, Xanthosarus 9, sc; Eucer.: Tetralonia dilecta g 2; Anthophor.: Amegilla 2. Short-tongued Bees (1)—Halict.: Agapostemon viridulus 9, ¢, n. Other Hymenoptera (1)—2Zumen.: Leionotus dorsalis, perfor- ating. Diptera (2, f, n)—Syrph.: Allograpta; Bombyli.: Anthrax sinuosa. Ruellia strepens—Blooms May 22—September 13; 1 visitor ob- served, June 16; Ma, R. Long-tongued Bees (1)—Eucer.: Tetralonia dilecta 9. ACERACEAE (anemophilous) Acer negundo.—One visitor observed, April 18, 24. Long-tongued Bees (1)—Ap.: Apis ¢, ab. Acer saccharinum.—One visitor observed, April 10. Long-tongued Bees (1)—Ap.: Apis ¢, ab. Acer saccharum.—April 4 and 13 the following 22 species were taken at exuding sap, 5 never taken on flowers. Long-tongued Bees (1)—Ap.: Apis ab. Short-tongued Bees (1)—Andren.: Trachandrena rugosa ¢, 3. Other Hymenoptera (2)—Bracon.: Earinus 7; Tenthredin.: Dolerus sericeus 2. 22 -FLOWERS AND INSECTS—XXVI Diptera (15)—Syrph.: Helophilus similis 1, Syrphus ribesii 3; Tachin.: Gonia capitata fq; Sarcophag.: Calliphora erythrocephala 1, vomitoria 3, Cynomyia 1, Helicobia 4-setosa 1; Musc.: Lucilia caesar 4, Muscina 2, Pseudopyrellia 4; Anthomy.: Hydrotaea 3, Hyetodosia 25; Agromyz.: Aulacigaster 2; Scatophag.: Scatophaga 12; Seps.: Prochyliza 10. Lepidoptera (3)—Nymphal.: Huvanessa 4, Polygonia comma 2, Vanessa atalanta 2. AIZOACEAE Mollugo verticillata (int, 5: 274).—Blooms June 25—October 12; 18 species and 29 individuals observed, July 16, August 11, 21; Mi, W. Short-tongued Bees (5: 13)—Halict.: Chloralictus pilosus 4, 1, sparsus 9, se, 4, tegularis J 9, 3, versatus J 9, se, 4, Seladonia J, 1. Other Hymenoptera (1: 3)—Philanth.: Cerceris finitima 3. Diptera (6: 9)—Syrph.: Mesogramma marginata sf, 4, Paragus tibialis 1, Pipiza pulchella 1; Conop.: Zodion nanellum 1; Sarco- phag.: Helicobia 4-setosa 1; Musc.: Pseudopyrellia 1. Coleoptera (1: 2)—WMalach.: Collops 2. ALISMACEAE Alisma plantago aquatica—Blooms July 4-August 13; 138 species and 101 individuals observed, July 20, 21, 1909; Mi, W. Short-tongued Bees (6:52)—Halict.: Agapostemon radiatus dj, 1, Chloralictus coreopsis 9, 1, cressonii (J, 3, sparsus 9, 8, tegularis ?, 31, Oxystoglossa similis 9, 8. Diptera (7:49)—Syrph.: Mesogramma marginata 32, Paragus bicolor 2, tibialis 2, Sphaerophoria 10, Syritta 1; Tachin.: Gymno- prosopa 1, Senotainia rubriventris 1. Sagittaria latifolia—Blooms July 1—-September 25; 122 indi- viduals, belonging to 52 species, observed July 25-August 30; Mi, W. On staminate flowers (24:42) :— Long-tongued Bees (2:2, 2)—Ceratin.: Ceratina 9, 1; Mega- chil.: Megachile brevis 9, se, 1. Short-tongued Bees (5:18, 9, se)—Halict.: Chloralictus sparsus 5, versatus 7, Evylaeus nelumbonis 1, Odontalictus 4, Oxystoglossa confusa 1. Other Hymenoptera (4:4)—Humen.: Leionotus anormis 1, ziziae 1; Larr.: Tachytes aurulentus 1; Nysson.: Pseudoplisus phaleratus 1. CHARLES ROBERTSON 23 Diptera (8:12)—Syrph.: Mesogramma marginata 1, Ortho- neura nitida f, 2, Rhingia 1; Empid.: Parempis 1; Bombyli.: Spar- nopolius 2; Tachin.: Epigrimyia geniculata 1; Musc.: Lucilia seri- cata 1; Anthomy.: Limnophora 3. Lepidoptera (3: 3)—Papilion.: Charidryas 1; Lycaen.: Chryso- phanus 1; Hesperi.: Limochores taumas 1. Coleoptera (2: 3)—Chrysomel.: Diabrotica 12-punctata 1; Coc- cinell.: Megilla f, in cop, 2. On staminate and pistillate flowers (17: 66) :— Long-tongued Bees (2:13)—Ap.: Apis 3; Bomb.: Bombus americanorum 9%, se, 10. Short-tongued Bees (4: 18)—Halict.: Agapostemon viridulus ¢, 5, Chloralictus pilosus 9, se, 3, Evylaeus pectoralis ¢ 9, se, 8, Oxysto- glossa similis 9, se, 2. Other Hymenoptera (3:12)—Scoli.: Elis interrupta 2, 5-cincta 7; Eumen.;: Leionotus arvensis 3. Diptera (4:10)—Syrph.: Syritta 2; Tachin.: Archytas analis 3, Cyphocera 2; Musc.: Lucilia sylvarum 3. Lepidoptera (3:9)—Nymphal.: Phyciodes 3; Hespert.: An- cyloxypha 2; Ctenuch.: Scepsis 4. Coleoptera (1:4)—Lampyr.: Chauliognathus pennsylvanicus 4. On pistillate flowers (11:14) :— Short-tongued Bees (2:2)—Halict.: Augochlora fervida 92, 1, viridula 9, 1. Other Hymenoptera (3:4)—Sphec.: Priononyx atrata 1; Philanth.: Cerceris compacta 1 ; Vesp.: Polistes pallipes 2. Diptera (5:7)—Tachin.: Spallanzania 1, Trichophora 3; Sar- cophag.: Helicobia helicis 1, Sarcophaga sinuata 1; Musc.;: Lucilia caesar 1. Lepidoptera (1: 1)—Papilion.: Eurymus 1. AMARANTHACEAE (anemophilous) Amaranthus spinosus (int).—One visitor observed, July 19. Long-tongued Bees (1)—Ap.: Apis se, fq. AMARYLLIDACEAE Hypoxis hirsuta (5: 69).—Blooms April 23—June 12; 16 visitors observed, May 10-19; Mi, Y. Long-tongued Bees (4, 2, c)—Ceratin.: Ceratina ab; Megachil.: Osmia atriventris, illinoensis fq, distincta. Short-tongued Bees (9, 9, ¢)—Halict.: Chloralictus eressonii, sparsus, tegularis, versatus, Curtisapis coriacea, Dialictus anomalus type, Evylaeus pectoralis, Odontalictus, Oxystoglossa similis ab. 24 FLOWERS AND INSECTS—XXVI Diptera (2, f)—Syrph.: Mesogramma marginata, Sphaerophoria. Coleoptera (1, £)—Buprest.: Acmaeodera culta. ANACARDIACEAE Rhus canadensis (9:161-3).—Blooms April 4-May 2; 33 visi- tors observed, April 4-19; Mis, Y. Long-tongued Bees (2)—Ceratin.: Zaodontomerus ¢; Nomad.: Gnathias cuneatus ¢ 9, fq. Short-tongued Bees (21)—Halict. (2): Agapostemon texanus, Chloralictus cressonii, foveolatus, sparsus, zephyrus fq, Curtisapis forbesii fq, Evylaeus foxii fq, Odontalictus, Oxystoglossa confusa ; Collet.: Colletes inaequalis 4; Andren.: Andrena carlini ¢ 9, faq, erythrogastra ?, mandibularis ¢ 9, fq, salictaria 9, tridens J, Opandrena cressonii , miserabilis ¢ 9, fq, Trachandrena claytoniae Jb 9, ab, forbesii J 2, fq, mariae J, fq, rugosa Ji Q, ab. Other Hymenoptera (1)—Ichneumon: Lampronota coxalis. Diptera (9)—Syrph.: Eristalis dimidiatus, Syrphus americanus fq, ribesii; Empid.: Rhamphomyia priapulus; Tachin.: Gonia capitata fq; Sarcophag.: Cynomyia; Musc.: Pseudopyrellia fq; Lonchae.: Lonchaea aberrans; Sciomyz.: Tetanocera. Rhus copallina——Blooms July 19—August 10; 74 visitors ob- served, July 26-28; Pol (Mis), Y. On pistillate flowers :— Long-tongued Bees (8)—Ap.: Apis ab; Bomb.: Bombias separa- tus S$; Megachil.: Trypetini: Neotrypetes truncatus ¢; Megachilini: Megachile generosa ¢, mendica ¢'; Coelioxyini: Coelioxys 8-dentata Jo Y, sayi 3'; Eucer.: Melissodes bimaculata &. Short-tongued Bees (15)—Halict.: Agapostemon radiatus ¢ Q, Augochlora fervida <', Chloralictus pilosus ¢' 9, sparsus 9, ab, versatus ¢ 2, ab, zephyrus 9, fq, Halictus lerouxii ¢ 9, ab, parallelus 3 2, Oxystoglossa confusa 9, similis ¢', Seladonia ¢ 92, ab; Sphecodini: Drepanium 9, Sphecodes arvensis ¢ 9, fq; Prosopid.: Prosopis illinoensis 9, pygmaea ¢ 9. Other Hymenoptera (29)—Sphec.: Ammobia ichneumonea, pennsylvanica, Isodontia apicalis, Sphex gracilis, nigricans, vul- garis; Scoli.: Elis interrupta, 5-cincta, Scolia bicincta; Philanth.: Cerceris fumipennis, Eucerceris, Philanthus punctatus fq, venti- labris; Vesp.: Polistes rubiginosus, variatus; Humen.: Leionotus arvensis fq, dorsalis, foraminatus fq, 4-sectus; Crabron.: Ana- erabro, Lindenius errans, Solenius; Oxybel.: Notoglossa americana, frontalis, Oxybelus packardii; Larr.: Tachytes distinectus; Pompil.: Arachnoproctonus, Poecilopompilus navus; Chalcid.: Leucospis. CHARLES ROBERTSON 25 Diptera (22)—Stratiomy.: Stratiomyia meigenii; Syrph.: Allograpta, Mesogramma marginata, Syritta fq; Conop.: Conops brachyrrynchus, Oncomyia, Physocephala tibialis, Zodion nanellum ; Tachin.: Archytas analis fq, Linnaemyia fq, Ocyptera lata, Phor- antha purpurascens, Senotainia trilineata fq, Trichopoda pennipes, Trichophora; Sarcophag.: Helicobia helicis, Sarcophaga cimbicis; Musc.: Compsomyia fq, Lucilia sylvarum, Musca, Pseudopyrellia fq; Anthomy.: Calythea. Rhus glabra (7: 111-12)—Blooms May 27-—July 7; 114 vis- itors observed, June 5—July 7; Mis, Y. On staminate flowers (57) :— Long-tongued Bees (4)—Bomb.: Bombias separatus %, sc; Stelid.: Microstelis 9; Megachil.: Trypetini: Neotrypetes truncatus 3b 2, se, fq; Coelioxyini: Coelioxys sayi 9. Short-tongued Bees (11)—Halict.: Curtisapis fuscipennis 9, se, Evylaeus arcuatus ¢ 9, se, ab, Oxystoglossa confusa ?, se; Sphe- eodini: Sphecodes arvensis 2; Prosopid.: Prosopis illinoensis 9, ziziae ¢ 9, sf; Collet.: Colletes aestivalis J 9, nudus ¢; Andren.: Andrena platyparia 9, se, Opandrena cressonii ?, se, Trachandrena nuda ¢. Other Hymenoptera (10)—Bembic.: Bicyrtes ventralis; Philanth.: Cerceris compar, fumipennis, insolita, Philanthus pune- tatus; Eumen.: Ancistrocerus campestris, Leionotus arvensis, Monobia, Zethus; Crabron.: Solenius. Diptera (29)—Stratiomy.: Stratiomyia apicula, meigenii, quaternaria; Syrph.: Baccha fuscipennis, Ceria, Eristalis dimidi- atus, flavipes, tenax, transversus, Mallota cimbiciformis, posticata, Mesogramma geminata, Orthoneura nitida, Sphaerophoria, Sphe- gina rufiventris, Syrphus americanus, ribesii; Empid.: Parempis fq, Bombyli.: Anthrax alternata, sinuosa f, Bombylius atriceps; Conop.: Conops brachyrrhynchus, Zodion fulvifrons, nanellum; Tachin.: Hypostena variabilis, Siphona; Musc.: Lucilia caesar, Morellia; Anthomy.: Limnophora. Lepidoptera (3)—Nymphal.: Neonympha; eens Cyaniris, Thecla calanus. On staminate and pistillate flowers (18) :— Long-tongued Bees (1)—Ceratin.: Ceratina 9, se. Short-tongued bees (10)—Halict.; Agapostemon radiatus 9, se, viridulus 9, se, Chloralictus pilosus 9, sc, pruinosus ¢ 9, se, sparsus 9, sc, ab, versatus ¢ 9, se, ab, zephyrus ¢ 9, se, ab, Halictus lerouxii ¢ 9, se, fq; Collet.: Colletes eulophi ¢ 9, ab; Andren.: Opandrena serotina ¢ 9, se, fq. 26 FLOWERS AND INSECTS—XXVI Other Hymenoptera (3)—Sphec.: Sphex vulgaris; Philanth.: Cerceris robertsonii fq; Oxybel.: Notoglossa americana. Diptera (4)—Syrph: Allograpta, Mesogramma marginata fq; Conop.: Physocephala tibialis; Tachin.: Ocyptera tenuis. On pistillate flowers (39) :— Long-tongued Bees (3)—Ap.: Apis ab; Bomb.: Bombias auri- comus 2; Ceratin.: Zaodontomerus ¢. Short-tongued Bees (7, 9)—Halict.: Chloralictus tegularis, Halictus parallelus, Oxystoglossa similis, Seladonia; Prosopid.: Prosopis pygmaea; Collet.: Colletes willistonii ab; Andren.: Trachandrena crataegi. Other Hymenoptera (10)—Sphec.: Isodontia apicalis, Prion- onyx thomae, Sphex procera; Philanth.: Cerceris compacta fq; Vesp.: Polistes pallipes; Humen.: Leionotus anormis fq; Oxybel.: Notoglossa frontalis; Pemphredon.: Mimesa; Pompil.: Pompiloides marginatus; Bracon.: Vipio. Diptera (18)—Syrph.: Syritta; Tachin.: Archytas analis ab, aterrima, Belvosia bifasciata, Cyphocera, Pachyophthalmus flori- densis, Peleteria, Spallanzania; Sarcophag.: Helicobia helicis, 4-setosa, Sarcophaga cimbicis, hunteri, sinuata; Musc.: Lucilia sylvarum, Pseudopyrellia, Stomoxys; Anthomy.: Phorbia acra, platura. Coleoptera (1)—WMordell.: Mordella melaena. June 17, 1913, the following 17 species and 51 india were taken on pistillate flowers of Rhus glabra: Long-tongued Bees (3:19)—Bomb.: Bombias auricomus 1; Ceratin.: Ceratina 17, Zaodontomerus 1. Short-tongued Bees (10: 28)—Halict.: Agapostemon radiatus 2, viridulus 1, Chloralictus pilosus 1, sparsus 9, tegularis 1, versatus 6, zephyrus 2, Oxystoglossa similis 2; Prosopid.: Prosopis pygmaea 1; Andren.: Opandrena serotina 3. Other Hymenoptera (1:1)—Sphec.: Sphex procera 1. Diptera (3:3)—Syrph.: Allograpta 1, Syritta 1; Tachin.: Peleteria 1. Rhus toxicodendron.—Blooms May 18-June 29; 1 visitor observed, June 8; Mis, Y. Short-tongued Bees (1)—Andren.: Trachandrena crataegi 9, se. . ANONACEAE Asimina triloba (16: 154-5).—Blooms April 10—May 27; 8 visi- tors observed, May 5; Mi, R. CHARLES ROBERTSON 27 Diptera (8)—Syrph.: Syrphus americanus; Sarcophag.: Cyno- myia fq, Helicobia helicis, 4-setosa, Sarcophaga: sinuata; Musc.: Phormia regina; Anthomy.: Phorbia platura; Scatophag.: Scato- phaga. APOCYNACEAE Apocynum androsaemifolium.—Blooms May 10—July 28; 12 visitors observed, July 16, 25; Mis, W. Long-tongued Bees (1)—Nomad.: Centrias americanus ?, mp. Short-tongued Bees (5, no pol.) —Halict.: Chloralictus versatus 9, zephyrus 2, Oxystoglossa confusa ¢, similis ¢ 9; Prosopid.: Prosopis sayi 9. Other Hymenoptera (1)—Sphec.: Sphex vulgaris, no pol. Diptera (5, n)—Tachin.: Linnaemyia, Trichophora; Musc.: Graphomyia, Lucilia sylvarum ; Anthomy.: Phorbia acra. Apocynum cannabinum (4:70).—Blooms May 18-August 12; 48 visitors observed, June 1—July 17; Mis, W. With pollinia (9) :— Long-tongued Bees (3)—Ap.: Apis lp; Nomad.;: Centrias ameri- eanus ¢ 9, fq, mp, lp; Holonomada affabilis ¢, lp. Short-tongued Bees (3, mp)—Halict. (2) : Agapostemon radia- tus, Oxystoglossa confusa; Collet.: Colletes productus 0, type. Other Hymenoptera (3)—Sphec.: Isodontia apicalis t; Bembic.: Bicyrtes ventralis mp ; Ewmen.: Leionotus foraminatus t. Without pollinia (39) :— Long-tongued Bees (3)—Stelid.: Microstelis 9; Megachil.: Megachilini: Chelostomoides 2; Coelioxyini: Coelioxys 8-dentata o 2. Short-tongued Bees (6)—Halict.: Augochlora viridula Q, Chloralictus versatus ¢ 2, Seladonia 2; Prosopid.: Prosopis ziziae 2; Collet.: Colletes aestivalis ¢; Macropid.: Macropis ¢, fq. Other Hymenoptera (4)—Sphec.: Priononyx atrata, thomae, Sphex vulgaris; Larr.: Astatus unicolor. Diptera (21, n)—Mycetophil.: Sciara atrata; Syrph.: Allo- grapta, Eristalis dimidiatus, Helophilus laetus, Sphaerophoria, Tropidia mamillata, quadrata; Empid.: Parempis; Bombyli.: Anthrax alternata, Bombylius atriceps; Tachin.: Archytas analis,, Cistogaster occidua, Linnaemyia, Ocyptera tenuis, Spallanzania, Trichophora; Sarcophag.: Helicobia helicis; Musc.: Compsomyia, Phormia regina ; Anthomy.: Limnophora, Phorbia acra. Lepidoptera (2, n)—Nymphal.: Argynnis; Lycaen.: Thecla calanus. 28 FLOWERS AND INSECTS—XXVI Coleoptera (1)—Scarabae.: Trichius piger n. Hemiptera (2, n)—Caps.: Lygus; Lygae.: Lygaeus. ARACEAE Arisaema triphyllum.—Blooms April 27—July 1; 1 visitor ob- served, May 11, also twenty specimens belonging to about seven species of Nematocera; Mi, Y. Hemiptera (1)—WNab.: Coriscus. ARISTOLOCHIACEAE Aristolochia tomentosa.—Blooms May 9-June 24; 5 visitors observed, May 15—June 13; Mi, Y. Diptera (4)—Chironom.: Ceratopogon websteri; Mycetophil.: Sciara atrata, vulgaris; Phor.: Phora. Coleoptera (1)-——Melandry.: Canifa. ASCLEPIADACEAE According to the situation of the pollinia the insects carrying them are marked: c=claws, emp=empodium, f= face, g=glossa, h=tarsal hairs, 1=labrum, lp =labial palpi, mp = maxillary palpi, p=pulvillus, sp = tibial spur, t = proboscis, usually palpi, vs = hairs of ventral surface. Acerates floridana (1: 245-7; 13:576-7).—Blooms June 24— August 16; 18 visitors observed, July 5-August 16; Mas, W. With polluma (10) :— Long-tongued Bees (6:21)—Ap.: Apis vs; Bomb.: Bombias scutellaris $, vs, ab, separatus ¢ ? G, 1, t, vs, ab; Megachil.: Megachile generosa 9, vs, mendica 9, vs. Other Hymenoptera (4)—Sphec.: Priononyx atrata vs; Bembic.: | Bembix nubillipennis 1, ab; Philanth.: Cerceris bicornuta vs, f, t; Pompil.: Priocnemoides unifasciatus vs, t. Coleoptera (1)—Scarabae.: Trichius piger vs. Without pollinia (8) :— Long-tongued Bees (1)—Megachil.: Megachile brevis 9. Other Hymenoptera (5)—Scoli.: Elis 5-cincta; Philanth.: Cer- ceris compar; Vesp.: Polistes variatus ; Hwmen.: Leionotus arvensis ; Bracon.: Orgilus. Lepidoptera (2)—Lycaen.: Chrysophanus; Ctenuch.: Scepsis fq. Acerates viridiflora (1:247-8).—Blooms June 8—July 29; 5 visitors observed, June 14—July 29; Mas, Y. Long-tongued Bees (3, h)—Bomb.: Bombias scutellaris 9, sepa- ratus 9, fq; Hucer.: Anthedon ~&. CHARLES ROBERTSON 29 Other Hymenoptera (2)—JLarr.: Tachytes mandibularis h; Eumen.: Leionotus arvensis, no pollinia. Asclepias incarnata (1: 209; 13: 571-2).—Blooms July 5—Sep- tember 2; 112 visitors observed, July 22-September 2; Pol (Mas), R. With pollinia (88) :— Long-tongued Bees (12)—Ap.: Apis h, t, ab, one dead; Bomb.: Bombias auricomus ¢ 9° 9, h, ¢, fq, scutellaris ¢ Y, h, ¢, t, fq, sepa- ratus ¢ ? Y, h, ec, Bombus americanorum ¢ @ Y, h, ¢, t, consimilis d, h, ¢, t, impatiens 9 &, h, e, t, Psithyrus laboriosus ¢, h, e, lp; Eucer.: Epimelissodes atripes 9, h, Melissodes comptoides ¢, h, trinodis ?, h; Emphor.: Melitoma 2, h. Short-tongued Bees (6)—Halict.: Augochlora fervida ¢ 9, h, fq, Curtisapis coriacea ¢, h, t, Halictus lerouxii ¢, p, Oxystoglossa similis ¢, t, Seladonia ?, h; Collet.: Colletes latitarsis ?, h, ¢, t, dead, Other Hymenoptera (42)—Sphec.: Ammobia ichneumonea h, nuda h, pennsylvaniea h, ¢, t, fq, Isodontia apicalis h, macrocephala h, Priononyx atrata h, fq, thomae h, fq, Seeliphron h, one dead; Bembic. (h): Bembix nubillipennis fq, spinolae, Megastizus, Sphe- cius fq, Stictia; Scoli.: Elis interrupta h, t, obseura‘h, 5-cincta h, e, t, fq, Seolia bicincta h; Philanth.: Cerceris bicornuta h, ¢, t, fq, clypeata h, ec, compacta h, ¢, finitima t, fumipennis p; Vesp.: Polistes pallipes h, ¢, rubiginosus h, ¢, variatus h, ¢, Vespula cuneata h, e¢, t, fq, germanica h, maculata h, vidua h, ¢, t; Lwmen.: Leionotus arvensis h, ¢, t, ab; Crabron.: Protothyreopus rufifemur ¢; Oxybel.: Oxybelus packardii ce, t; Larr.: Tachytes aurulentus h, distinctus h, mandibularis h, t, fq, pepticus h; Nysson.: Pseudoplisus phaleratus h; Pompil. (h): Ageniella accepta, Arachnoproctonus, Episyron, Lophopompilus atrox, Priocnemoides unifasciatus. Diptera (8)—Stratiomy.: Stratiomyia meigenii ¢; Mida.: Midas clavatus h, t, tibialis p; Conop.: Conops xanthopareus p, fq, Physo- cephala tibialis h; Tachin.: Cistogaster occidua t, n, Panzeria ¢, Trichopoda lanipes h. Lepidoptera (15)—Nymphal.: Anosia h, Argynnis h, Basilarchia archippus h, Hypatus h, Speyeria h, Vanessa atalanta h, ¢; Papilion.: Euphoeades h, Eurymus h, Heraclides h, Jasoniades h, ¢, Laertias h, Papilio h, e, Pieris h, ¢; Hesperi.: Achalarus h, Limo- chores taumas h. Coleoptera (3)—Lampyr.: Chauliognathus pennsylvanicus h, ¢, t, ab; Scarabae.: Euphoria sepulchralis, h, ¢, t, ab, Trichius piger h. Hemiptera (2)—Lygae.: Lygaeus h, Oncopeltus h. Without pollinia (24) :-— Birds (1)—Trochil.: Trochilus n. 30 FLOWERS AND INSECTS—XXVI Long-tongued Bees (1)—Megachil.: Megachile brevis ¢ 9. Short-tongued Bees (1)—Halict.: Chloralictus versatus d', n. Other Hymenoptera (3)—Eumen.: Eumenes fraternus; Oxybel.: Notoglossa americana; Pompil.: Priocnemoides fulvicornis. Diptera (9)—Bombyli.: Sparnopolius n; Conop.: Conops brachyrrhynchus n, Stylogaster biannulata n; Tachin.: Gymno- prosopa n, Ennyomma globosa n, Masiphya n, Opsidia n, Phasio- cliata n, Spallanzania. Lepidoptera (6)—Nymphal.: Phyciodes; Hespert.: Epargyreus, Euphyes verna, Pholisora catullus, Polites; Ctenuch.: Scepsis. Coleoptera (3, n)—Buprest.: Acmaeodera pulchella; Cerambyc. Tetraopes gn; Melo.: Epicauta vittata gn, fq. Asclepias purpurascens (1:213; 18:576).—Blooms May 27- July 15; 386 visitors observed, June 2-28; Mas, R. With pollinia (14) :— Long-tongued Bees (5)—Ap.: Apis h; Megachil.: Megachile addenda 9, h, mendica 3, h; Eucer.: Tetralonia rosae 9, h; Antho- phor.: Anthemoessa ¢ 9, h, p, fq. Diptera (2)—Conop.: Physocephala tibialis h; Tachin.: Spallan- zania p. Lepidoptera (5, h)—Nymphal.: Argynnis fq, Euphydryas, Speyeria, Vanessa atalanta, huntera; Hespert.: Thorybes pylades. Hemiptera (1)—Lygae.: Oncopeltus h. Without pollinia (28) :— Birds (1)—Trochil.: Trochilus n. Long-tongued Bees (3, 9)—Bomb.: Bombias separatus, Bombus americanorum, consimilis; Anthophor.: Anthophora. Short-tongued Bees (4, 9, n)—Halict.: Augochlora fervida, Chloralictus versatus, Evylaeus pectoralis, Oxystoglossa confusa, similis. Other Hymenoptera (1)—Sphec.: Priononyx atrata. Lepidoptera (13)—Nymphal.: Anosia; Lycaen.: Chrysophanus, Everes, Thecla calanus, sylvinus; Papilion.: Euphoeades, Kurymus, Heraclides, Jasoniades, Laertias; Hespert.: Euphyes verna, Limo- chores manataaqua, taumas, Pamphila hobomok, Polites. Coleoptera (1)—Cerambyc.: Tetraopes gn, n. June 19-28, the following 22 species and 58 individuals were taken on the flowers :— With pollinia (4:14) :— Long-tongued Bees (2:5)—Ap.: Apis 4; Anthophor.: Anthe- moessa 9, 1. | Lepidoptera (2:9)—Nymphal.: Argynnis 6, Vanessa hunt- era 3. CHARLES ROBERTSON 31 Without pollinia (20: 44) :— Birds (1:1)—Trochil.: Trochilus 1. Long-tongued Bees (3:9, 2)—Bomb.: Bombias separatus 1; Anthophor.: Anthemoessa 7, Anthophora 1. Short-tongued Bees (4:7, 9)—Halict.: Augochlora fervida 2; Chloralictus versatus 1, Evylaeus pectoralis 3, Oxystoglossa similis 1. Lepidoptera (9:23)—Nymphal.: Argynnis 1; Papilion.: Euphoeades 3, Heraclides 1, Jasoniades 5, Laertias 3; Hespert.: Euphyes verna 1, Limochores taumas 2, Polites 2, Thorybes pylades 5. Diptera (2:3)—Tachin.: Trichophora 2, Spallanzania 1. Hemiptera (1:1)—Lygae.: Oncopeltus 1. Asclepias sullivantii (1: 210-12; 13:574-5)—Blooms June 10-August 23; 90 visitors observed, June 19-August 20; Mas, R. With pollinia (25) :— Long-tongued Bees (11)—Bomb.: Bombias auricomus ¢ 9, ¢, Pp, sp, scutellaris 9 9, ec, separatus 2 9, ce, fg, Bombus americanorum Q, h, ¢, Psithyrus variabilis 2, ec, sp, h; Megachil.: Megachile petulans 4, ¢, Xanthosarus ¢ ?, ¢; Epeol.: Argyroselenis 2, p, n, Epeolus bifasciatus ¢, p, n; Eucer.: Florilegus 4, p, Melissodes coreopsis 9, P- Other Hymenoptera (4)—Sphec.: Priononyx thomae h, Sceli- phron ec; Bembic.: Bembix nubillipennis ¢; Ichnewmon.: Ichneumon flavizonatus, on antenna, n. Diptera (3)—Stratiomy.: Stratiomyia meigenii c, emp; Conop.: Physocephala tibialis p, Zodion obliquefasciatum p. Lepidoptera (7)—Nymphal.: Anosia ¢, h, sp, Argynnis ¢; Lycaen.: Strymon h, n; Papilion.: Eurymus ¢, Papilio ¢; Hespert.: Epargyreus ce, Limochores manataaqua ¢. Without pollinia, (46) :— Birds (1)—Trochil.: Trochilus. Long-tongued Bees (4)—Ceratin.: Ceratina 9; Megachil.: Megachilini: Megachile generosa ¢ 9, ab, mendica ¢; Coelioxyini: Coelioxys 8-dentata ¢ 9, fq. Short-tongued Bees (9)—Halict.: Augochlora viridula 9, Chlora- lictus pilosus 2, sparsus 9, tegularis <4, versatus ¢ 2, Oxystoglossa pura ¢ 9, confusa ¢ 9; Sphecodini: Drepanium ¢ 2, fq, Sphecodes arvensis 9. Other Hymenoptera (12)—Sphec.: Priononyx atrata; Bembic.: Bembix spinolae, Microbembex fq; Scoli.: Elis 5-cineta; Cercer.: Cerceris clypeata, finitima; Philanth.: Philanthus punctatus; 32 | FLOWERS AND INSECTS—XXVI Eumen.: Leionotus arvensis; Crabron.: Protothyreopus rufifemur ; Oxybel.: Notoglossa americana; Larr.: Lyroda, Tachytes mandib- ularis fq. Diptera (7)—Syrph.: Tropidia quadrata; Tachin.: Chaeto- gaedia analis (acroglossoides type), Linnaemyia, Phorantha humer- alis, Senotainia rubriventris, trilineata; Sarcophag.: Helicobia helicis. Lepidoptera (10)—Nymphal.: Phyciodes, Vanessa atalanta; Lycaen.: Chrysophanus, Everes, Uranotes; Hesperi.: Kuphyes metacomet, Limochores taumas, Thorybes pylades; Sphing.: Hemaris axillaris; Sest.: Sesia 6-fasciata. Coleoptera (1)—Curculion.: Centrinus scutellum album fq. Hemiptera (2)—Caps.: Calocoris; Pentatom.: Podisus, pred. The following insects were found entrapped and dead on the flowers (19) : Long-tongued Bees (6)—Ap.: Apis 671 9, 1 ¢; Megachil.: Anthemois ¢ 2, e, p, Megachile addenda ¢ 9, brevis ¢ 9, ¢, Sayapis pugnata ¢'; Eucer.: Peponapis J. Short-tongued Bees (38, ¢)—Halict.: Halictus lerouxii ¢, p, Odontalictus, Seladonia. Other Hymenoptera (3)—Sphec.: Isodontia apicalis h, c, Sphex pictipennis ¢; Larr.: Astatus bicolor. Diptera (4)—Syrph.: Eristalis aeneus ¢, Syritta; Bombylt.: Sparnopolius; Musc.: Pseudopyrellia. Lepidoptera (2)—Hesperi.: Polites p; Ctenuch.: Scepsis. Coleoptera (1)—Scarabae.: Trichius piger ec. The following 22 species and 140 individuals were taken on the flowers, June 19, 20, 1911: With pollinia (6:9) :— Long-tongued Bees (2:5)—Bomb.: Bombus americanorum 3; Megachil.: Xanthosarus 2. Diptera (1: 1)—Conop.: Physocephala tibialis 1. Lepidoptera (8:3)—Nymphal.: Argynnis 1; Hespert.: Epargy- reus 1, Limochores manataaqua 1. Without pollinia (20: 1381) :— Long-tongued Bees (4:22)—Megachil.: Megachile brevis 18, generosa 1, mendica 1, Xanthosarus 2. Short-tongued Bees (4: 86)—Halict.: Chloralictus pilosus 1, tegularis 1, versatus 83, Oxystoglossa confusa 1. Other Hymenoptera (4:7)—Sphec.: Priononyx atrata 1; Bembic.: Bembix nubillipennis 1, spinolae 1; Larr.: Tachytes mandibularis 4. CHARLES ROBERTSON 33 Lepidoptera (8:16)—Nymphal.: Argynnis 2, Phyciodes 1; Lycaen.: Uranotes 1; Hesperi.: Epargyreus 1, Euphyes metacomet 1, Limochores manataaqua 8, Thorybes pylades 1; Sphing.: Hemaris axillaris 1. Asclepias syriaca (1: 209-10; 13: 572-4).—Blooms June 1- August 15; 99 visitors observed, June 7—-August 7; Mas, R. With pollinia (60) :— Long-tongued Bees (15)—Bomb.: Bombias separatus 9 9, t; Megachil.: Megachilini: Megachile generosa ¢, t, petulans 9, t; Coelioxyini: Coelioxys 8-dentata ¢ 9, ¢, n; Epeol.: Epeolus bi- fasciatus ¢', p, n, Triepeolus remigatus 4, p; Eucer.: Florilegus o 2, p, g, Melissodes agilis 4, p, comptoides 4, p, petalostemonis Q, p, Peponapis ¢ 2, h, p, t, fq, Tetralonia dilecta 9, p, rosae 9, h, Xenoglossa 9, p; Anthophor.: Anthomoessa , p. Short-tongued Bees (6)—WHalict. (n) : Agapostemon radiatus ¢, p, Halictus lerouxii <4, p, Seladonia 9, ¢; Sphecodini: Proteraner 3, p; Collet.: Colletes latitarsis J, p, lp, nudus 9, p. Other Hymenoptera (12)—Sphec.: Ammobia ichneumonea h; Priononyx atrata p, fq, thomae h; Bembic.: Bembix nubillipennis h, Stictia p; Scoli.: Campsomeris h, ¢, Elis obscura p, 5-cincta h, Seolia bicincta h; Philanth.: Cerceris bicornuta h; Eumen.: Leionotus arvensis h; Larr.: Tachytes mandibularis h. Diptera (14)—Syrph.: Eristalis dimidiatus p, t, Mallota cimbici- formis p, t, illinoensis p, Syritta p, Tropidia mamillata p, quadrata h; Mida.: Midas eclavatus t; Conop.: Physocephala texana p; Tachin.: Archytas analis p, Belvosia bifasciata p, unifasciata p, Linnaemyia p, Trichopoda plumipes p, t; Anthomy.: Hyetodosia p. Lepidoptera (8)—Nymphal.: Anosia h, Argynnis h, Euvanessa h, ec, Polygonia interrogationis h, t, Vanessa atalanta h; Hesperi.: Achalarus h; Sphing.: Choerocampa h; Ctenuch.: Scepsis h. Coleoptera (1)—Lampyr.: Photinus h. Hemiptera (4)—Lygae.: Lygaeus h, p, e¢, Oncopeltus h; Pentatom.: Euschistus variolarius h, Podisus p, pred, n. Without pollinia (31) :— Long-tongued Bees (4)—Bomb.: Bombias auricomus %, Bombus americanorum 9; Megachil.: Megachile brevis 2; Eucer.: Epimelis- sodes obliqua ¢. Short-tongued Bees (1)—Halict.: Augochlora viridula ?, n. Other Hymenoptera (2)—Sphec.: Sceliphron; Philanth.: Cer- ceris clypeata. Diptera (5, n)—Culic.: Culex stimulans; Stratiomy.: Odon- tomyia cincta; Bombyli.: Anthrax sinuosa; Conop.: Stylogaster biannulata; Tachin.: Cistogaster occidua. 34 FLOWERS AND INSECTS—XXVI Lepidoptera (13)—Nymphal.: Basilarchia archippus, Speyeria ; Lycaen.: Chrysophanus, Thecla calanus; Paptlion.: Eurymus, Laertias, Papilio; Hesperi.: Epargyreus, Limochores taumas, Pholisora catullus, Polites; Pyraust.: Loxostege. Coleoptera (4, n)—Cerambyc.: Tetraopes gn; Elater.: Mela- notus gn; Scarabae.: Macrodactylus gn, Trichius piger. Hemiptera (2, n)—Caps.: Lygus; Reduvi.: Sinea. The following visitors were found dead on the flowers (8) :— Long-tongued Bees (1)—Ap.: Apis ab, p, t. Diptera (4)—Tachin.: Spallanzania p; Sarcophag.: Sarcophaga cimbicis p; Musc.: Pseudopyrellia, Stomoxys. Lepidoptera (3)—Arcti.: Callimorpha p; Noctu.: Drasteria erechtea h, Agrotis. Asclepias tuberosa (1: 212-13; 13: 575-6).—Blooms June 6— September 5; 29 visitors observed, June 14-August 17; Mas, Y. With pollinia (19) :— Long-tongued Bees (5)—Ap.: Apis h; Stelid.: Anthidium cog- natum 4, h; Megachil.: Coelioxys 8-dentata ?, h, ec; Hucer.: Melis- sodes petalostemonis 2, h, variabilis 2, h. Short-tongued Bees (1)—Halict.: Augochlora fervida 9, ¢, fq. Other Hymneoptera (4, h)—Sphec.: Ammobia ichneumonea, Priononyx thomae, Sphex nigricans, procera ab. Diptera (1)—Tachin.: Spallanzania h. Lepidoptera (8, h)—Nymphal.: Argynnis, Speyeria; Papilion.: Euphoeades, Eurymus, Laertias, Papilio, Pontia; Ctenuch.: Scepsis. Without pollinia (10) :-— Birds (1)—Trochil.: Trochilus n. Long-tongued Bees (2)—Megachil.: Cyphopyga 9, Megachile brevis ¢ 9. Other Hymenoptera (1)—Sphec.: Priononyx atrata. Lepidoptera (6)—Nymphal.: Anosia, Phyciodes; Lycaen.: Chrysophanus, Everes, Strymon; Papilion.: Jasoniades. Asclepias verticillata (1: 207-8; 13: 569-71).—Blooms June 26-September 4; 131 visitors observed, June 26—August 21; Pol, W. With pollinia (71) :— Long-tongued Bees (10)—Ap.: Apis h; Bomb.: Bombias sepa- ratus ¢' 2 9, h, fq, Bombus impatiens %, h, Psithyrus laboriosus; ©, h; Ceratin.: Ceratina 9, h, c, p, fq; Megachil.: Trypetini: Neo- trypetes barbatus 9, p, type; Megachilini: Megachile brevis ¢ 9, h, t, fq; Coelioxyini: Coelioxys 8-dentata 3, h; Epeol.: Triepeolus concolor ¢', h; Eucer.: Melissodes bimaculata ¢ 9, h, t, fq. CHARLES ROBERTSON 35 Short-tongued Bees (10)—Halict.: Augochlora fervida ¢ 9, h, Chloralictus pilosus 9, mp, versatus ¢ ?, p, Curtisapis forbesii ¢, lp, Evylaeus pectoralis 9, h, Halictus lerouxii ¢ 9, h, ¢, t, Seladonia o 2, h, p, ab; Sphecodini: Machaeris stygia 9, h, Sphecodes arvensis 3, h, t; Prosopid.: Prosopis ziziae 9, p. Other Hymenoptera (32)—Sphec. (h): Ammobia ichneumonea fq, pennsylvanica, Isodontia apicalis, Priononyx thomae; Bembic.: Bembix numbilipennis h; Scoli.: Elis obscura h, 5-cincta h, t, fq, Seolia bicincta h; Philanth.: Cerceris bicornuta h, ab, clypeata h, e, fq, compacta h, ¢e, fq, raui h, fulvipes h, robertsonii h; Vesp.: Polistes variatus h; Eumen.: Eumenes fraternus h, ¢, t, Leionotus anormis h, t, ab, arvensis h, fq, foraminatus h; Crabron.; Ana- erabo ¢, p, Protothyreopus rufifemur h, p, fq; Larr. (h): Astatus unicolor, Tachytes distinctus, elongatus, mandibularis, pepticus fq; Pompil. (h): Anoplius illinoensis, Batizonus, Lophopompilus philadelphicus, Priocnemoides fulvicornis, terminatus; J'enthre- din.: Hylotoma humeralis h. : Diptera (16)—Syrph.: Eristalis latifrons h, Syritta ¢, Tropidia quadrata h; Mida.: Midas clavatus h; Conop.: Physocephala texana h, tibialis h; Tachin.: Archytas analis h, Clytiomyia h, t, Linnae- myia h, t, Ocyptera tenuis h, t, Spallanzania h, ¢, p, t, Xanthomel- ana t, n, Senotainia trilineata t, fq, n; Musc.: Compsomyia e, t, Phormia regina c, Pseudopyrellia h, ¢, t. Lepidoptera (3, h)—Nymphal.: Anosia; Hesperi.: Pholisora hayhurstii, Polites. Without pollinia (60) :— Long-tongued Bees (1)—Bomb.: Bombus americanorum 9. Short-tongued Bees (4)—Halic.: Agapostemon radiatus 9, Chloralictus albipennis (', sparsus 9; Sphecodini: Sphecodium eressonii ¢. Other Hymenoptera (9)—Sphec.: Priononyx atrata, Sceli- phron, Sphex nigricans; Scoli.: Elis interrupta; Philanth.: Cerceris finitima; Crabron.: Solenius; Ozybel.: Notoglossa frontalis; Formici.: Formica rufibarbis; Chrysid.: Holopyga. Diptera (29 n)—Syrph.: Allograpta, Eristalis transversus, Mesogramma marginata, polita, Orthoneura nitida, Paragus bicolor, Sphaerophoria; Empid.: Parempis; Bombyli.: Exoprosopa fasciata, Systoechus; Conop.: Conops brachyrrhynchus; Tachin.: Cisto- gaster occidua, Exorista confinis, Gymnoprosopa, Ennyomma glo- bosa, Paradidyma, Phorantha purpurascens, Senotainia rubri- ventris, Siphoplagia anomala, flaccidirostris, Trichopoda pennipes, Trichophora; Sarcophag.: Helicobia helicis, Sarcophaga sinuata; 36 FLOWERS AND INSECTS—XXVI Musc.: Graphomyia, Lucilia sylvarum; Anthomy.: Calythea, Lim- nophora; Seps.: Sepsis. Lepidoptera (13)—Nymphal.: Argynnis, Phyciodes, Vanessa atalanta; Lycaen.: Chrysophanus, Everes; Papilion.: Kurymus, Heraclides, Pieris; Hespert.: Achalarus, Euphyes verna, Limo- chores taumas, Pholisora catullus; Ctenuch.: Scepsis. Coleoptera (8 n)—Cerambyc.: Typocerus sinuatus; Rhipiphor.: Rhipiphorus limbatus; Scarabae.: Trichius piger. Hemiptera (1)—Phymat.: Phymata, pred, n. Gonolobus laevis (8:108-10)—Blooms July 12-August 23; 22 visitors observed, July 14-August 23; Mis, W. With pollinia on proboscides (14) :— Long-tongued Bees (1)—Hucer.: Epimelissodes atripes 9. Short-tongued Bees (4, ¢ ?)—-Chloralictus sparsus ab, tegu- laris, versatus ab, zephyrus ab. Other Hymenoptera (4)—Sphec.: Ammobia nuda; Scoli.: Elis interrupta, 5-cincta fq; Vesp.: Polistes variatus. Diptera (5)—Bombylt.: Anthrax fulvohirta; Conop.: Conops xanthopareus; Tachin.: Alophora aeneoventris, Panzeria; Musce.: Lucilia sericata. Without pollinia (8) :— Short-tongued Bees (6)—Halict.: Augochlora viridula ¢' 9, Chloralictus illinoensis ¢', Paralictus cephalicus 9, platyparius 9; Prosopid.: Prosopis illinoensis 9, pygmaea J. Other Hymenoptera (1)—Eumen.: Leionotus ziziae. Diptera (1)—Empid.: Parempis n. BALSAMINACEAE Impatiens biflora (2: 300-1)—Blooms June 19-September 20; 11 visitors observed, July 30-September 12; Ma, R. Birds (1)—Trochil.: Trochilus fq. Long-tongued Bees (6)—Ap.: Apis se; Bomb.: Bombus ameri- canorum ¢ G, impatiens 9%, se; Megachil. (9, ¢, n) : Megachile brevis, mendica; Eucer.: Melissodes bimaculata 9. Short-tongued Bees (2, 9, ¢, n)—Halict.: Chloralictus versatus, Oxystoglossa confusa. Lepidoptera (1)—Papilion.: Euphoeades. Coleoptera (1)—Chrysomel.: Diabrotica 12-punctata gn, n. Impatiens pallida (2: 301-2)—Blooms June 11-September 17; 6 visitors observed, July 23-September 17; Ma, Y. Birds (1)—Trochil.: Trochilus. CHARLES ROBERTSON 37 Long-tongued Bees (4)—-Bomb.: Bombus americanorum ¢ 9, ab, impatiens %, se, ab; Megachil.: Megachile brevis 9, ¢, n. Short-tongued Bees (1)—Halict.: Chloralictus versatus 9, n. Diptera (1)—Syrph.: Rhingia sf, n. BERBERIDACEAE Caulophyllum thalictroides (9: 154-5).—Blooms April 23- May 7; 29 visitors observed, April 23—May 3; Mi, Y. Long-tongued Bees (3, 2?)—Bomb.: Bombias separatus, Bombus impatiens, ridingsii. Short-tongued Bees (8, 9)—Halict.: Augochlora viridula, Chlo- ralicus sparsus sec, versatus sc, Curtisapis coriacea, Evylaeus 4-macu- latus, Halictus lerouxii, Oxystoglossa confusa, pura. Other Hymenoptera (6)—Scelion.: Prosacantha n; Bracon.: Bracon trifolii, vernoniae, Dacnusa, Microgaster ab, Opius ruficeps, Diptera (9)—Mycetophil.: Dynatosoma thoracicum n, type; Syrph.: Chilosia petulea, Melanostoma obscurum, Rhingia; Empid.: Rhamphomyia piligeronis; Musc.: Morellia; Anthomy.: Hylemyia plumosa, type, Mydaea socialis ; Oscin.: Chlorops assimilis. Coleoptera (3)—Anthic.: Corphyra terminalis; Curculion.: Idio- stethus subealvus ; Mordell.: Mordellistena biplagiata n. Podophyllum peltatum (9: 155-6).—Blooms April 14~-May 21; 5 species and 8 individuals observed, April 25—-May 14; Ma, W. Long-tongued Bees (5)—Ap.: Apis ¢, 1; Bomb. (2): Bombias separatus 1, Bombus americanorum 3, impatiens 1; Eucer.: Tetra- lonia dilecta 3, 2. BIGNONIACEAE Tecoma radicans.—Blooms June 8—-September 10; 3 visitors observed, July 21, August 6; Ma (O), R. Birds (1)—Trochil.: Trochilus ab. Long-tongued Bees (1)—Bomb.: Bombus americanorum 9%, ¢, ab, n. Short-tongued Bees (1)—Halict.: Chloralictus zephyrus 9, ¢, n. Extra-floral nectaries—Sixteen visitors observed, July 20, 21. Ants (4, $)—Formic.: Formica fusea 13, schaufussi 3, Tapi- noma 2; Myrmic.: Cremastogaster ab, day and night. Short-tongued Bees (3)—Halict.: Chloralictus sparsus 9, 6, versatus 9, 20, zephyrus ¢ Q, 7. Diptera (9)—Syrph.: Syritta 1; Sarcophag.: Helicobia helicis 1, Sarcophaga assidua 1, cimbicis 2; Musc.: Lucilia serieata 1, Musea 1, Stomoxys 1; Agromyz.: Milichiella 11; Ortal.: Camptoneura fq. 38 FLOWERS AND INSECTS—XXVI BoRANGINACEAE Cynoglossum officinale (int).—One visitor observed, June 11; Ma, R. Long-tongued Bees (1)—Megachil.: Megachile brevis 9. Lappula virginiana.—Blooms July 5-September 9, 4 visitors observed, July 15, 22, 27; Mi, W. Short-tongued Bees (3, 2)—Halict.: Chloralictus sparsus, ver- satus, Seladonia. Diptera (1)—Syrph.: Syritta fq. Lithospermum canescens (8: 144-6).—Blooms March 18—June 12; 37 visitors observed, April 18—June 5; Ma, Y. Long-tongued Bees (17)—Ap.: Apis; Bomb. (2) : Bombias scu- tellaris, Bombus americanorum ab, impatiens; Ceratin.: Ceratina ©; Megachil.: Osmia atriventris J 9, se, fq, illinoensis ¢ 9, se, ab, cordata J, distincta 9, se; Nomad.: Gnathias ovatus 2, Heminomada 3, Holonomada superba 4; Melect.: Bombomlecta ¢ 9, ab; Hucer.: Tetralonia belfragei %, dilecta ¢ 9, ab, in cop, illinoensis 3, type; Anthophor.: Anthophora J, fq. Diptera (2)—Bombylt.: Bombylius atriceps, major fq. Lepidoptera (18)—Nymphal.: Anosia fg, Charidryas, Phye- iodes, Vanessa atalanta, cardui, huntera; Lycaen.: Chrysophanus; Papilion.: Eurymus ab, Iphiclides fq, Papilio, Pieris; Hesperi.: Pholisora catullus, Thanaos brizo, icelus fq, juvenalis, martialis, persius; Noctu.: Plusia simplex. Mertensia virginica (13: 580-1).—Blooms March 31—May 25; 28 visitors observed, April 8-May 13; Ma, R. Birds (1)—Trochil.: Trochilus. Long-tongued Bees (16)—Ap.: Apis e; Bomb. (2): Bombias auricomus, separatus, Bombus americanorum fq, consimilis, rid- ingsii; Megachil.: Centrosmia 6 9, sc, fq, Ceratosmia ¢' 9, Osmia atriventris ¢ 9, se, pumila 2, se; Nomad.: Xanthidium dentariae ¢'; Eucer.: Tetralonia belfragei ¢ 9, se, fq, dilecta ¢ 9, fq, in cop, dubitata 4, fq; Anthophor.: Anthemoessa ¢' 9, Anthophora ¢ 9, fq. Short-tongued Bees (2, 9, n)—Halict.: Chloralictus versatus, Oxystoglossa confusa. Diptera (3)—Syrph.: Rhingia sf, Teuchoenemis f, n; Bombyli.: Bombylius major. Lepidoptera (6)—Nymphal.: Anosia, Vanessa atalanta; Papilion.: Euphoeades; Hesperi.: Thanaos juvenalis; Sphing.: Deilephila, Hemaris thysbe. CHARLES ROBERTSON 39 Myosotis virginica.—Blooms April 27—June 9; 2 visitors ob- served, May 21, 24; Mi, W. Short-tongued Bees (1)—Halict.: Oxystoglossa confusa 9. Lepidoptera (1)—Papilion.: Pontia. CAMPANULACEAE Campanula americana (4:70).—Blooms July 1—October 6; 20 visitors observed, July 10—October 4; Ma, R. Long-tongued Bees (9)—Ap.: Apis; Bomb.: Bombias separatus do, Bombus americanorum ¢ 9%, fq, impatiens ¢ %; Megachil.: Megachilini: Megachile brevis ¢ 2, petulans 9, e, Oligotropus cam- panulae ¢ 9, se, oligolege, type; Coelioxyini: Coelioxys modesta 2; Eucer.: Melissodes bimaculata ¢ 9. Short-tongued Bees (7)—Halict.: Agapostemon radiatus ¢ 9, Chloralictus sparsus 9, ¢, n, Curtisapis coriacea ¢ 92, Halictus lerouxii ¢, Oxystoglossa confusa 9, ce, n; Prosopid.: Prosopis ziziae Q, f, n; Collet.: Colletes latitarsis 9, n. Other Hymenoptera (1)—WScoli.: Elis 5-cincta. Diptera (1)—Syrph.: Pipiza nigribarba f, n. Lepidoptera (2)—Nymphal.: Vanessa cardui; Hesperi.: Pholi- sora hayhurstii. Specularia perfoliata—Blooms May 18—June 29; 17 visitors observed, May 29—June 29; Mi, R. Long-tongued Bees (3, 2)—Bomb.: Bombias separatus, Bombus americanorum ; Ceratin.: Ceratina. Short-tongued Bees (6)—Halict. (2): Augochlora fervida, Chloralictus versatus sc, Oxystoglossa confusa, similis se, fq, Sela- donia ; Collet.: Colletes brevicornis ¢ 9, se, ab, oligolege. Other Hymenoptera (1)—Ewumen.: Leionotus foraminatus. Diptera (4)—Syrph.: Mesogramma marginata f, n; Bombyli.: Anthrax sinuosa f, n; Conop.: Oncomyia, Stylogaster biannulata. Lepidoptera (3)—Lycaen.: Everes; Papilion.: Pieris; Hesperi.: Pholisora hayhurstii. CAPRIFOLIACEAE Lonicera sempervirens (cult, 10:241).—Ma (0), R. Birds (1)—Trochil.: Trochilus ab. Lonicera sullivantii (10: 241-4).—Blooms May 15—June 7; 5 visitors observed, May 17-27; Ma, Y. Birds (1)—Trochil.: Trochilus fq. Long-tongued Bees (3, 9)—Bomb.: Bombus americanorum, im- patiens fq; Anthophor.: Anthophora se, fq. Diptera (1)—Syrph.: Pipiza femoralis f, n. 40 FLOWERS AND INSECTS—XXVI1 Sambucus canadensis (5: 274-5).—Blooms May 27—August 9; 32 visitors observed, June 7—-July 11; Pol (Mis), W. All visits are for pollen. Long-tongued Bees (2, ¢).—Ap.: Apis fq; Ceratin.: Ceratina 9. Short-tongued Bees (6, ?, ¢)—Halict.: Chloralictus sparsus ab, versatus ab, zephyrus ab, Evylaeus arcuatus, Halictus parallelus; Andren.: Trachandrena claytoniae. Diptera (19, f)—Syrph.: Allograpta fq, Baccha fuscipennis, Eristalis dimidiatus, tenax, Mallota cimbiciformis fq, Mesogramma geminata, marginata, Orthoneura nitida ab, Spilomyia hamifera fq, Syritta, Syrphus americanus, ribesii fq, Xylota fraudulosa; Bombyli.: Anthrax sinuosa, Argyramoeba oedipus; Musc.: Musca, Pseudopyrellia; Anthomy.: Phorbia acra, platura. Coleoptera (5, £)—Cerambyc.: Euderces; Dermest.: Attagenus fq; Malach.: Anthocomus; Mordell.: Pentaria; Scarabae.: Euphoria fulgida. 108 individuals taken on the flowers, July 8-10, 1920, showed: Long-tongued Bees (4, ¢)—Apidae. Short-tongued Bees (68, 2, ¢)—Halictidae. Diptera (32, £)—Syrphidae 31, Anthomyidae 1. Coleoptera (4, f). Symphoricarpus orbiculatus (16:173-4)—Blooms July 6- September 10; 120 visitors observed, July 8-August 30; Mis, Y. Long-tongued Bees (10)—Ap.: Apis ab; Bomb.: Bombias sepa- ratus 2 %, Bombus americanorum Q, sc, consimilis $, se, impatiens 2 s, 9 se, fq; Megachil.: Megachilini: Megachile mendica ¢ Q, Oligotropus <; Coelioxyini: Coelioxys 8-dentata J, sayi ¢ 9; Eucer.: Melissodes bimaculata J. Short-tongued Bees (27)—Halict.: Agapostemon radiatus ¢ 9, ab, Augochlora fervida 9, viridula ¢ 9, ab, Chloralictus coreopsis 9, cressonii ¢ 9, fq, obscurus ¢ 9, ab, sparsus J 9, se, ab, tegularis & , fq, versatus 9, sc, ab, zephyrus J 9, ab, Curtisapis coriacea 3& &, forbesii J 9, Evylaeus foxii 2, pectoralis ¢' ?, fq, 4-macu- latus ¢ 9, Halictus lerouxii J 9, ab, parallelus ¢ 9, Odontalictus Q, Oxystoglossa confusa ¢ 9, ab, pura ¢ Q, ab, similis ¢ 2, ab, Sela- donia ¢ 2; Sphecodini: Sphecodes arvensis ¢ 2, ab, heraclei ¢ 9; Prosopid. (8 @): Prosopis sayi, ab, ziziae fq; Collet.: Colletes nudus ¢ . Other Hymenoptera (48)—Sphec.: Ammobia ichneumonea, nuda, pennsylvanica, Isodontia apicalis, macrocephala, Sphex gra- cilis, nigricans fq, vulgaris fq; Bembic.: Bicyrtes 4-fasciata, Mega- stizus; Scolt.: Elis obscura, 5-cincta fq, Scolia bicineta; Philanth.: CHARLES ROBERTSON 41 Cerceris clypeata fq, compacta, fumipennis, Philanthus punctatus fq; Vesp.: Polistes annularis, pallipes, variatus; Ewmen.: Ancistro- cerus tigris, Eumenes fraternus ab, Leionotus anormis, arvensis, dorsalis, foraminatus ab, fulvipes, histrionalis, illinoensis fq, megaera, perennis, 4-sectus, scrophulariae, ziziae, Monobia, Zethus ; Oxybel.: Notoglossa frontalis; Larr.: Notogonidea, Tachytes auru- lentus; Pompil.: Episyron, Lophopompilus philadelphicus fq, Poecilopompilus navus, Priocnemoides unifasciatus, Diptera (37)—Culic.: Aédes; Stratiomy.: Nemotelus, Stratio- myia meigenii: Syrph.: Eristalis tenax, transversus, Helophilus laetus, Mallota cimbiciformis, Mesogramma geminata ab, marginata, Milesia, Orthoneura nitida ab, Pipiza nigribarba, Spilomyia longi- cornis, Syritta ab, Tropidia albistylum, quadrata; Empid.: Parem- pis ab; Bombyli.: Exoprosopa fascipennis; Conop.: Conops xantho- pareus, Oncomyia; Tachin.: Archytas analis fq, aterrima, Belvosia bifasciata, unifasciata, Cyphocera, Linnaemyia, Ocyptera dosiades, tenuis, Phorantha magna, Siphona, Spallanzania, Trichopoda pen- nipes, Trichophora, Xanthomelana; Musc.: Compsomyia, Lucilia caesar, Pseudopyrellia fq. Lepidoptera (1)—Lycaen.: Cyaniris. Coleoptera (2)—Mordell.: Mordella marginiata, Mordellistena pubescens. On seven days, July 13-27, 1909, the following 87 species and 1,052 individuals were taken on the flowers: Long-tongued Bees (6:21)—Ap.: Apis 12; Bomb.: Bombias separatus 1, Bombus consimilis 1, impatiens 5; Megachil.: Oligo- tropus 1; Eucer.: Melissodes bimaculata 1. Short-tongued Bees (25: 781)—Halict.: Agapostemon radiatus 26, Augochlora fervida 1, viridula 73, Chloralictus coreopsis 1, eressonii 7, obscurus 29, sparsus 220, tegularis 6, versatus 69, zephyrus 17, Curtisapis forbesii 2, Evylaeus foxii 1, pectoralis 9, 4-maculatus 3, Halictus lerouxii 15, paralellus 4, Oxystoglossa con- fusa 84, pura 22, similis 163, Seladonia 2; Sphecodini: Sphecodes arvensis 2, heraclei 1; Prosopid.: Prosopis sayi 16, ziziae 6; Collet.: Colletes nudus 2. , Other Hymenoptera (30: 104)—Sphec.: Ammobia ichneumonea 2, pennsylvanica 1, Isodontia apicalis 1, Sphex gracilis 2, nigricans 4, vulgaris 4; Scoli.: Elis obscura 1, 5-cincta 3, Scolia bicineta 3; Philanth.: Cerceris clypeata 5, compacta 2, fumipennis 1, Philan- thus punctatus 3; Vesp.: Polistes pallipes 2, variatus 1; Eumen.: Ancistrocerus tigris 1, Eumenes fraternus 15, Leionotus arvensis 3, foraminatus 31, fulvipes 3, histrionalis 1, perennis 1, 4-sectus 2, serophulariae 1, Monobia 2, Zethus 2; Larr.: Notogonidea 1, 42 FLOWERS AND INSECTS—XXVI Tachytes aurulentus 1; Pompil.: Episyron 1, Lophopompilus phila- delphicus 4. Diptera (24: 141)—Stratiomy.: Nemotelus 1; Syrph.: Eristalis tenax 1, transversus 1, Helophilus laetus 1, Mesogramma geminata 15, marginata 3, Milesia 1, Orthoneura nitida 20, Pipiza nigribarba 1, Spilomyia longicornis 1, Syritta 10, Tropidia albistylum 1, quad- rata 2; Empid.: Parempis 54; Conop.: Oneomyia 1; Tachin.: Archytas analis 6, Cyphocera 1, Siphona 1, Spallanzania 1, Tricho- poda pennipes 4, Trichophora 2; Musc.: Compsomyia 4, Lucilia caesar 4, Pseudopyrellia 5. Coleoptera (2:5)—Mordell.: Mordella marginata 4, Mordelli- stena pubescens 1. Triosteum perfoliatum (4:65)—Blooms May 3-June 17, 7 visitors observed, May 18, 23, June 3; Ma, R. Long-tongued Bees (5)—Bomb. (°): Bombus americanorui, consimilis ab, ridingsii; Anthophor.: Anthemoessa ¢; Ceratin.: Ceratina 9, n. | Short-tongued Bees (2, 9, n)—Halict.: Halictus lerouxii e¢, Oxystoglossa confusa se. Viburnum prunifolium (10: 237-8).—Blooms April 9—May 16; 83 visitors observed, April 24, May 8; Mis, W. Long-tongued Bees (11)—Ap.: Apis se; Ceratin.: Ceratina J; Megachil.: Ceratosmia 9, Osmia pumila 9; Nomad.: Gnathias cuneatus 3“, ovatus ¢, Heminomada <1, Nomada eressonii 3, faq, illinoensis ', sayi 9, fq; Hucer.: Tetralonia dilecta J 9. Short-tongued Bees (27)—Halict. (2): Agapostemon radiatus, Chloralictus cressonii, pilosus sec, sparsus se, ab, tegularis se, ver- satus se, ab, Evylaeus foxii sc, pectoralis sc, ab, Halictus lerouxii se, Oxystoglossa confusa se, fq; Sphecodini: Machaeris stygia, Proteraner, Sphecodes arvensis fq, Sphecodium eressonii; Collet.: Colletes inaequalis ¢; Andren.: Andrena ecarlini ?, dunningii 9, erythrogastra J, pruni ¢ 9, se, fq, in eop, sayi ¢ 9, se, fq, Opan- drena eressonii 3 2, se, fq, miserabilis J 9 se, ab, personata ¢ 9, ab, Trachandrena claytoniae 9, se, forbesii 9, sc, hippotes Q, se, rugosa ¢. Other Hymenoptera (2)—Vesp.: Polistes pallipes; Humen.: Ancistrocerus tigris. Diptera (36)—Stratiomy.: Stratiomyia quaternaria fq; Syrph.: Brachyopa, Chilosia capillata fq, petulea, punctulata, Chrysogaster ontario, Criorhina decora, umbratilis, Eristalis aeneus fq, dimidia- tus, transversus, Helophilus latifrons, Mesogramma geminata, mar- ginata, Myiolepta strigilata fq, Orthoneura pictipennis, Paragus CHARLES ROBERTSON 43 bicolor, Psilota, Syritta; Empid.: Empis nuda, otiosa fq, Rham- phomyia mutabilis, priapulus, sordida; Bombyli.: Bombylius major, pulchellus ; Conop.: Myopa vesiculosa fq, in cop; Tachin.: Archytas analis, Gonia capitata, Gymnosoma, Peleteria fq; Musc.: Graph- omyia, Lucilia caesar, sericata fq, Phormia regina, Pseudopyrellia. Lepidoptera (7)—Nymphal.: Charidryas, Vanessa huntera; Lycaen.: Cyaniris, Uranotes; Hesperi.: Thanaos juvenalis fq, mar- tialis; Sphing.: Hemaris thysbe. Viburnum pubescens (10: 236-7; 16: 171—2).—Blooms May 2- 25; 71 visitors observed, May 4-20; Mis, W. Long-tongued Bees (5)—Bomb.: Bombias separatus 9, Bombus americanorum 9; Ceratin.: Ceratina 9, se; Megachil.: Osmia pumila 2; Eucer.: Tetralonia dilecta ¢. Short-tongued Bees (21)—Halict. (2): Chloralictus eressonii se, versatus se, Curtisapis coriacea, se, Evylaeus foxii se, pectoralis se, fq, 4-maculatus, Oxystoglossa confusa se; Prosopid.: Prosopis illinoensis 9, pygmaea 9, ziziae ¢; Andren.: Andrena earlini 9, se, mandibularis 9, se, fq, salictaria 9, sayi 2, se, fq, Opandrena cres- sonii ¢ 9, se, ab, personata i, fq, serotina 9, sc, fq, Trachandrena claytoniae 9, se, ab, forbesii 2, se, nuda 9, se, rugosa 9, se, fq. Diptera (26)—Syrph.: Chilosia capillata, Criorhina decora, umbratilis fq, Mesogramma geminata, Syritta, Volucella vesiculosa, Xylota chalybea; Empid.: Empis avida, compta, distans fq, humilis fq, levicula, nuda, otiosa, Pachymeria fq, Rhamphomyia angustipennis, exigua, mutabilis fq, priapulus fq, sordida; Conop.: Myopa vesiculosa ; Tachin.: Epigrimyia floridensis, Siphona; Musc.: Lucilia caesar; Oscin.: Chlorops proxima, Hippelates plebejus. Lepidoptera (2)—Papilion.: Iphiclides; Hesperi.: Thanaos juvenalis. Coleoptera (17)—Bruch.: Bruchus hibisei; Cerambyc.: Cal- limoxys sanguinicollis, Euderces, Molorchus ab; Chrysomel.: Dia- brotica vittata, Disonycha; Dermest.: Anthrenus musaeorum fq, Cryptorhopalum triste, Orphilus ab; Lampyr.: Telephorus dentiger ; Mordell.: Mordellistena aspersa fq, biplagiata fq, grammica; Oedemer.: Asclera ruficollis; Scarabae.: Euphoria fulgida, Hoplia fq, Valgus gn, n. CARYOPHYLLACEAE Cerastium nutans.—Blooms April 16—May 31; 16 visitors ob- served, May 1-3; Mi, W. Long-tongued Bees (1)—Ap.: Apis fq. Short-tongued Bees (4, 2)—Halict.: Chloralictus sparsus, ver- satus sc, Halictus lerouxii, Seladonia sc, fq. 44 FLOWERS AND INSECTS—XXVI Diptera (9)—Syrph.: Eristalis bastardi, Helophilus latifrons fq, similis fq, Melanostoma mellinum, Mesogramma marginata f, Sphaerophoria; Bombyli.: Bombylius major; Tachin.: Peleteria; Musc.: Lucilia caesar. Lepidoptera (2)—Nymphal.: Phyciodes; Papilion.: Eurymus. Cerastium vulgatum (int)—Blooms May 6—September 24; 15 species and 28 individuals observed, May 19, 21, 28, June 5, 11; Mi, W. Long-tongued Bees (4: 9)—Ap.: Apis 5; Bomb.: Bombus ameri- canorum 9, 1; Ceratin.: Ceratina 9, 2; Stelid.: Microstelis 2, 1. Short-tongued Bees (4:8, 9)—Halict.: Oxystoglossa similis 5, Seladonia 1; Prosopid.: Prosopis pygmaea 1; Andren.: Opandrena personata 1. Other Hymenoptera (1:1)—KHumen.: Leionotus illinoensis 1. Diptera (6:10)—Syrph.: Mesogramma marginata 2, Sphaero- phoria 4; Bombyli.: Toxophora 1; Conop.: Zodion fulvifrons 1; Tachin.: Cistogaster pallasii 1, Peleteria 1. Saponaria officinalis (int)—Blooms June 1—October 7; 2 visi- tors observed, August 24; Ma, R. Lepidoptera (2)—Papilion.: Euphoeades, Pontia. Silene nivea.—Blooms June 10-July 9; 1 visitor observed, June 6; Mi, W. Short-tongued Bees (1)—Halict.: Chloralictus pilosus 9. Silene stellata.—Blooms June 18—August 7; 1 visitor observed, June 23; Ma, W. Long-tongued Bees (1)—-Bomb.: Bombus americanorum 9. Stellaria longifolia—Blooms May 7—June 26; 13 species and 31 individuals observed, May 14, 18, 22, 24; Mi, W. Long-tongued Bees (3:3)—Megachil.: Diceratosmia 92, 1; Nomad.: Holonomada superba 4, 1; Eucer.: Tetralonia dilecta J, 1. Short-tongued Bees (6:17)—Halict. (2): Chloralictus sparsus 3, versatus se, 1, Oxystoglossa similis 5, Seladonia 5; Prosopid.: Prosopis ziziae 4, 2; Andren.: Opandrena personata Q, se, 2. Diptera (4: 11)—Mycetophil.: Sciara atrata 2; Syrph.: Heloph- ilus laetus 1, Mesogramma marginata 2; Tachin.: Cistogaster pallasii 6. Stellaria media (int, 6: 267—-8).—Blooms March 16—December 1; 61 species observed, March 25—May 8 and October 15; Mi, W. Long-tongued Bees (6)—Ap.: Apis; Ceratin.: Ceratina ¢; Megachil.: Ceratosmia ¢; Nomad.: Gnathias ovatus ¢ 9, Xanthid- ium luteoloides 4, luteolum ¢. CHARLES ROBERTSON 45 Short-tongued Bees (19)—Halict.: Chloralictus obseurus 6, pilosus 9, sparsus 9, se, ab, versatus ¢ 2, fq, Evylaeus foxii 9, 4-maculatus ?, Halictus lerouxii 2, Odontalictus ?, Oxystoglossa confusa 9, ab, similis 9, Seladonia 9; Collet.: Colletes inaequalis ¢; Andren.: Andrena illinoensis ?, sayi 4, Opandrena ecressonii ¢ 9, sc, in cop, type, miserabilis ¢ 2, personata ¢ 9, ab, Parandrena dj, Trachandrena forbesii 9. Other Hymenoptera (4)—Sapyg.: Sapyga; Chalcid.: Smicra torvina ; Ichnewmon.: Pimpla novita; Tenthredin.: Dolerus arvensis. Diptera (29)—Mycetophil.: Sciara atrata; Syrph.: Brachy- palpus frontosus, Chilosia capillata, Eristalis aeneus, dimidiatus, tenax, Melanostoma obscurum, Mesogramma geminata, marginata fq, Platychirus quadratus, Syritta, Syrphus americanus, ribesii; Tachin.: Gonia capitata ab, exul fq, Siphona; Sarcophag: Cynomyia fq; Musc.: Lucilia caesar, sericata, sylvarum, Musca, Myospila, Phormia terraenovae, Pollenia, Pseudopyrellia; Anthomy.: Phorbia acra, platura; Borbor.: Borborus; Scatophag.: Scatophaga. Lepidoptera (2)—Nymphal.: Vanessa huntera; Lycaen.: Cyan- iris. Hemiptera (1)—Lygae.: Lygaeus. May 6, 8, 1916, the first 100 individuals, representing 19 species, taken on the flowers are as follows: Long-tongued Bees (1: 2)—Nomad.: Gnathias ovatus 2. Short-tongued Bees (7: 73)—Halict.: Chloralictus sparsus 40, versatus 5, Evylaeus 4-maculatus 2, Oxystoglossa similis 2; Andren.: Opandrena cressonii 2, miserabilis 1, personata 21. Other Hymenoptera (1: 1)—Sapyg.: Sapyga 1. Diptera (10: 24)—Syrph.: Mesogramma geminata 2, marginata 6, Syritta 1; Tachin.: Siphona 3; Musc.: Lucilia caesar 1, sericata 1, sylvarum 4, Pollenia 1; Anthomy.: Phorbia acra 4, platura 1. CELASTRACEAE Celastrus scandens.—Blooms May 21—June 3; 6 species and 15 individuals observed, May 24; Mi (Mis), Y. Long-tongued Bees (1:1)—Megachil.: Hoplitis 9, 1. Short-tongued Bees (4: 13)—RHalict.: Augochlora fervida 9, 1, Chloralictus versatus 9, sc, 4; Collet.: Colletes aéstivalis ¢ 9, 6; Andren.: Opandrena eressonii 9, se, 2. Other Hymenoptera (1: 1)—2Humen.: Leionotus foraminatus 1. Evonymus atropurpureus (16: 158).—Blooms May 25—June 23; 22 species and 51 individuals observed, June 7, 8, 11, 15; Mi, R. Short-tongued Bees (5:11, 9)—Halict.: Chloralictus sparsus 5, versatus 3, zephyrus 1, Oxystoglossa confusa 1, pura 1. 46 FLOWERS AND INSECTS—XXVI Diptera (15: 384)—Syrph.: Allograpta 2, Baccha tarchetius 1, Mesogramma marginata 1, Syrphus ribesii 1; Sarcophag.: Boettch- eria 4, Helicobia helicis 1, 4-setosa 4, Sarcophaga cimbicis 1, sinuata 1; Musc.: Myospila 4, Phormia regina 3, Pseudopyrellia 6; Anthomy.: Phorbia acra 3, platura 1; Ortal.: Seoptera 1. Coleoptera (2: 6)—Chrysomel.: Rhabdopterus 1; Mordell.: Mor- dellistena ornata 5. COMMELINACEAE Tradescantia brevicaulis——Blooms April 29-June 15; 13 visi- tors observed, May 8-24; Ma, R. Long-tongued Bees (6, ¢c)—Ap.: Apis fq; Bomb.: Bombias sepa- ratus 2, Bombus americanorum 9°; Ceratin.: Ceratina 2; Megachil.: Megachile brevis 9; Hucer.: Tetralonia dilecta °, fq. Short-tongued Bees (7, 9, ¢)—Halict.: Chloralictus tegularis, versatus, Evylaeus pectoralis, 4-maculatus, Oxystoglossa similis, Seladonia; Andren.: Opandrena cressonii. Tradescantia pilosa.—Blooms June 8—-September 27; 3 visitors observed, July 1; Ma, R. Long-tongued Bees (2, 9, ¢)—Bomb.: Bombus americanorum, impatiens. Short-tongued Bees (1)—Halict.: Oxystoglossa pura 9, e¢. Tradescantia virginiana (5:71)—Blooms May 8—August 11; 18 visitors observed, June 3-17; Ma, R. Long-tongued Bees (7, ¢)—Ap.: Apis; Bomb.: Bombias auri- comus 9, separatus 2 %, Bombus americanorum 9, consimilis 9, se, impatiens 92; Ceratin.: Ceratina 9; Eucer.: Tetralonia dilecta 9. Short-tongued Bees (2, 9, ¢)—Halict.: Agapostemon viridulus, Chloralictus pruinosus. Diptera (8, f, n)—Syrph.: Allograpta, Eristalis dimidiatus, tenax, Mesogramma marginata, Sphaerophoria, Syrphus ameri- canus, ribesii, Tropidia mamillata. Coleoptera (1)—Curculion.: Centrinites f, n. CoMPOSITAE Achillea millefolium.—Blooms May 18—August 10; 47 visitors observed, May 28-June 28; Mis, W. Long-tongued Bees (8, 9)—WMegachil.: Megachile petulans ¢; Bomb.: Bombias auricomus c; Nomad.: Gnathias cuneatus. Short-tongued Bees (4, 9)—Halict.: Chloralictus pilosus se, ver- satus sc, ab, Odontalictus se, Paralictus simplex. Other Hymenoptera (8)—Crabron.: Protothyreopus rufifemur ; Oxybel.: Notogldssa americana, frontalis, Oxybelus packardii; CHARLES ROBERTSON 47 Philanth.: Cerceris compacta, rufinoda; Eumen.: Leionotus forami- natus, fulvipes. Diptera (34)—Taban.: Chrysops striatus; Nemestrin.: Rhyn- chocephalus; Bombyli.: Oncodocera, Toxophora; Syrph.: Allo- grapta, Eristalis aeneus, dimidiatus, tenax, transversus Mallota cimbiciformis, Mesogramma marginata, Orthoneura nitida, Paragus tibialis, Sphaerophoria, Syritta, Syrphus americanus, ribesii; Conop.: Conops brachyrrhynchus, Oncomyia; Tachin.: Apinops, Archytas analis, Cistogaster occidua, pallasii, Epigrimyia polita, Gymnosoma, Senotainia rubriventris, trilineata; Sarcophag.: Heli- cobia helicis, Sarcophaga cimbicis ; Musc.: Lucilia sylvarum, Pseudo- pyrellia; Anthomy.: Phorbia acra, platura; Sapromyz.: Sapromyza vulgaris. Coleoptera (1)—Mordell.: Mordella melaena. Actinomeris alternifolia—Blooms August 15—October 4, 12 visitors observed, August 17—September 12; Mas, Y. Long-tongued Bees (6)—Bomb.: Bombias separatus ¢, Bombus americanorum 9%, consimilis ¢ ¥, sc, impatiens ¥Y, se; Ap.: Apis se, fq; Epeol.: Triepeolus remigatus 9. Short-tongued Bees (2)—Halict.: Curtisapis coriacea ; Panurg.: Pseudopanurgus labrosiformis 9, c. Other Hymenoptera (1)—Scoli.: Seolia bicincta. Diptera (1)—Syrph.: Syrphus ribesii. _ Lepidoptera (1)—Lycaen.: Cyaniris. Coleoptera (1)—Lampyr.: Chauliognathus pennsylvanicus, in cop. Ambrosia trifida (anemophilous).—Two species and 33 individ- uals observed, August 27, September 1. Long-tongued Bees (1: 31)—Ap.: Apis ¢, 31. Other Hymenoptera (1: 2)—Vesp.: Vespula germanica, expl., 2. Antennaria plantaginifolia (15: 462-—3)—Blooms April 4~May 21; 72 visitors observed, April 14~May 5; Mis, W. On staminate flowers (25): Long-tongued Bees (3)—Megachil.: Osmia pumila ¢; Bomb.: Bombus americanorum 9; Nomad.: Nomada cressonii ¢. Short-tongued Bees (2, 9)—Halict.: Evylaeus foxii se ; Spheco- dini: Dialonia antennariae type. Diptera (14)—Empid.: Empis otiosa type; Syrph.: Eristalis aeneus, Mesogramma geminata, Orthoneura nitida, Paragus tibialis, Platychirus hyperboreus, quadratus; Tachin.: Pachyophthalmus signatus; Sarcophag.: Cynomyia, Helicobia helicis, Sarcophaga 48 FLOWERS AND INSECTS—XXVI cimbicis; Musc.: Morellia; Anthomy.: Limnophora; Oscin.: Chlor- ops versicolor. Lepidoptera (4)—Nymphal.: Vanessa huntera; Hesperi.: Thanaos juvenalis; Noctu.: Drasteria erechtea ; Pyraust.: Loxostege. Coleoptera (2, £)—Dermest.: Anthrenus scrophulariae; Oede- mer.: Asclera ruficollis. On staminate and pistillate flowers (26) :— Long-tongued Bees (5)—Ceratin.: Ceratina 0, ab, Zaodonto- merus 6; Ap.: Apis; Nomad. (¢ 9, fq) : Gnathias ovatus, Nomada sayl. : Short-tongued Bees (12)—Halict. (2): Chloralictus pilosus se, sparsus se, ab, versatus se, ab, zephyrus, Halictus lerouxii ab, Odon- talictus sc, ab, Oxystoglossa confusa fq, similis se, fq, Seladonia se, ab; Sphecodini: Sphecodes minor; Andren.: Parandrena 9, Trach- andrena claytoniae ¢. Diptera (7)—EHmpid.: Rhamphomyia priapulus; Syrph.: Meso- gramma marginata in cop, fq, Sphaerophoria fq; Tachin.: Gonia ecapitata ab; Musc.: Lucilia caesar, Pseudopyrellia; Anthomy.: Phorbia platura. Lepidoptera (2)—Lycaen.: Cyaniris; Papilion.: EKurymus. On pistillate flowers (21) :— Long-tongued Bees (3)—Nomad.: Heminomada ., Phor ¢, Xanthidium luteolum 9. Short-tongued Bees (11)—Halict. (2): Chloralictus pruinosus, Evylaeus arcuatus, pectoralis; Sphecodini: Sphecodium cressonii ; Andren.: Andrena erythrogastra J, illinoensis ¢ 9, fq, nigrae 9, salictaria 4, ab, sayi 9, Opandrena miserabilis 3, Trachandrena forbesii ¢. Other Hymenoptera (1)—Chrysid.: Holochrysis hilaris. Diptera (5)—Bombyli.: Bombylius major; Syrph.: Paragus bicolor ; Tachin.: Euphorocera claripennis, Gonia exul; Anthomy.: Phorbia acra. Lepidoptera (1)—Hesperi.: Thanaos brizo. Anthemis cotula (int).—Blooms May 17—October 24; 7 visitors observed, June 21, 22; Mis, W. Short-tongued Bees (5)—Halict.: Chloralictus sparsus 9, se; Halictus lerouxii 9, Odontalictus 9, sc, fq, Oxystoglossa similis 9, se, Seladonia ¢ 9. Diptera (2)—Empid.: Parempis; Conop.: Oncomyia. Arctium minus (int)—Blooms July 7—October 24; 19 species and 44 individuals observed, July 21-September 8; Mas, R. CHARLES ROBERTSON 49 Long-tongued Bees (9:26)—Megachil.: Anthemois 9, se, 1, Sayapis sayi ¢ 9, se, 3; Ceratin.: Ceratina 9, se, 2; Bomb. (9): Bombus americanorum sc, 4, consimilis 1, impatiens se, 2; Ap.: Apis 7; Eucer.: Melissodes bimaculata ¢ 2, 3, vernoniana d, 3. Short-tongued Bees (4:11)—Halict.: Agapostemon radiatus 3 2, 5, Chloralictus sparsus 92, ¢, n, Halictus lerouxii ¢ 2, 2, Odonta- lictus 9, 2. Diptera (2:2)—Bombyli.: Exoprosopa fasciata, 1; Syrph.: Eristalis tenax 1. Lepidoptera (4:5)—Papilion.: Eurymus 1, Pieris 2; Hesperi.: Hesperia 1, Limochores taumas 1. Aster anomalus.—Blooms August 22—November 8; 34 visitors observed, August 22—October 9; Mas, R. ; Long-tongued Bees (10)—Megachil.: Megachile brevis Q, se, Xanthosarus 9, se; Ceratin.: Ceratina 2, se; Bomb.: Bombus ameri- eanorum ¢ 9, fq, impatiens ¢ 9, Psithyrus variabilis ¢; Ap.: Apis se; Eucer.: Melissodes autumnalis ¢ 9, se, simillima Q, se, trinodis Q, se. Short-tongued Bees (8)—WHalict.: Chloralictus pilosus ¢, Evy- laeus pectoralis 2, sc, Odontalictus ¢ 2, se, Oxystoglossa pura 9; Collet. (2, sc): Colletes americanus, compactus; Andren. (9, se): Pterandrena asteris solidaginis. Other Hymenoptera (1)—Bracon.: Chelonus. Diptera (8)—Bombyli.: Anthrax halcyon, Geron rufipes, Spar- nopolius ; Empid.: Parempis ; Syrph.: Eristalis transversus, Syrphus areuatus; Tachin.: Siphoplagia anomala; Musc.: Compsomyia. Lepidoptera (5)—Nymphal.: Phyciodes; Papilion.: Callidryas, Pieris, Pontia, Zerene. Coleoptera (1)—Melo.: Epicauta pennsylvanica, n. Hemiptera (1)—Lygae: Lygaeus. October 6, 1909, 22 species and 66 individuals were taken on the flowers, as follows: Long-tongued Bees (7:43)—Megachil.: Megachile brevis 1; Xanthosarus 9; Bomb.: Bombus americanorum 10; impatiens 5; Ap.: Apis 8; Eucer.: Melissodes autumnalis 9; trinodis 1. Short-tongued Bees (6: 12)—Halict.: Odontalictus 1; Oxystog- lossa pura 1; Collet.: Colletes americanus 2; compactus 6; Andren.: Pterandrena asteris 1; solidaginis 1. Other Hymenoptera (1:1)—Bracon.: Chelonus 1. Diptera (4:5)—Bombyli.: Sparnopolius 2; Empid.: Parempis 1; Syrph.: Syrphus areuatus 1; Musc.: Compsomyia 1. Lepidoptera 2: 3)—Papilion.: Pieris 1; Pontia 2. 50 FLOWERS -AND INSECTS—XXVI Coleoptera (1:1)—Melo.: Epicauta pennsylvanica 1. Hemiptera (1:1)—Lygae.: Lygaeus 1. Aster ericoides villosus (16: 175-6).—Blooms August 30—No- vember 8; 302 visitors observed, August 30-November 8; Mis, W. Long-tongued Bees (37)—Stelid.: Stelidium 9; Megachil.: Try- petini: Neotrypetes productus ¢, truncatus 9, sc; Megachilini: Megachile brevis 9, se, generosa 9, mendica 9; Sayapis sayi 9, se, Xanthosarus 3 2, sc; Coelioxyini: Coelioxys 8-dentata ¢ 9, fa, rufitarsis 9, sayi 9; Ceratin.: Ceratina ¢ 9, fq, Zaodontomerus J, fq; Bomb.: Bombias auricomus ¢ 9, scutellaris J 2 %, separatus 3 %, Bombus americanorum ¢ 2 9, fq, impatiens ¢ Q, se, fa, Psithyrus variabilis ¢', fq; Ap.: Apis se, fq; Nomad.: Holonomada placida ¢' 9, fq, vincta 9, Nomada vicina ¢ 9, fq; Epeol.: Epeolus autumnalis ¢ 9, bifasciatus 2, pusillus ¢' 2, fq, Triepeolus concolor 2, eressonii ¢' 9, donatus ¢' 2, fq, micropygius 2, type, pectoralis 3 2, fa, type; Eucer.: Epimelissodes obliqua ¢, Melissodes asteris Q, type, autumnalis ¢ , se, ab, type, boltoniae 2, sc, nivea 9, se, fq, simillima ¢ 9, se, fq. Short-tongued Bees (53)—Halict.: Agapostemon radiatus ¢ 9, fq, splendens ¢ 9, texanus J 9, se, viridulus ¢ 9, se, fq, Augochlora fervida ¢ 9, se, viridula ¢ 9, Chloralictus coreopsis ¢' 2, foveolatus 3, type, illinoensis ¢ 9, se, fq, obseurus J, fq, pilosus ¢ 9, fq, prui- nosus 4, smilacinae Isopyrum biternatum (5: 173).—Blooms March 20—May 2; 52 visitors observed, March 26—April 30; Mi, W. Long-tongued Bees (7)—Ap.: Apis se, fq; Bomb.: Bombus americanorum 9; Ceratin.: Ceratina ¢, Zaodontomerus ¢; Mega- chil.: Osmia pumila ¢ 9; Nomad.: Nomada sayi ¢ 2; Eucer.: Tetra- lonia belfragei ¢ 9. Short-tongued Bees (25)—Halict. (2): Agapostemon radiatus, Chloralictus caeruleus, cressonii, obscurus, pilosus, sparsus se, ver- satus se, ab, zephyrus ab, Curtisapis coriacea, forbesii, Evylaeus foxii, pectoralis, 4-maculatus, Halictus lerouxii se, Oxystoglossa confusa se, fq, pura, Seladonia se, ab; Collet.: Colletes inaequalis o; Andren.: Andrena carlini ¢ 9, fq, sayi ¢ 9, fq, Opandrena miserabilis 9, ¢, Ptilandrena erigeniae ¢ 9, Trachandrena clay- toniae ¢, forbesii 2, rugosa ¢ 9, fq. Other Hymenoptera (1)—Sapyg.: Sapyga. Diptera (14)—Syrph.: Chilosia capillata sf, Eristalis dimidia- tus, Helophilus similis, Melanostoma obscurum, Mesogramma gemi- nata, marginata f, n, Sphaerophoria f, n, Syrphus americanus sf, ribesii, Xylota fraudulosa; Empid.: Empis nuda; Bombyli.; Bom- bylius major ab; Tachin.: Gonia capitata; Musc.: Pseudopyrellia. Coleoptera (4, f,n)—Anthic.: Corphyra terminalis; Chrysomel: Diabrotica vittata; Coccinell.: Megilla; Oedemer.: Asclera rufi- collis. Hemiptera (1)—Caps.: Lygus. Myosurus minimus.—Blooms April 7—May 17; 1 visitor ob- served, May 8; Mi, Y. Short-tongued Bees (1)—Halict.: Chloralictus zephyrus 9, 1. Ranunculus abortivus (7: 108-9).—Blooms March 31—June 9; 24 visitors observed, April 8—-May 11; Mi, Y. Long-tongued Bees (4)—Ap.: Apis; Bomb.: Bombus ameri- canorum 9; Ceratin.: Ceratina ¢; Nomad.: Gnathias ovatus 9. Short-tongued Bees (10)—Halict. (2): Chloralictus cressonii, pilosus, sparsus se, fq, versatus, zephyrus, Evylaeus pectoralis, Oxy- stoglossa confusa, similis, Seladonia; Andren.: Opandrena per- sonata J, fq. Diptera (8)—Syrph.: Chilosia petulea, Mesogramma marginata fq, Paragus bicolor fq, Pipiza nigribarba, Sphaerophoria fq; Tachin.: Apinops, Siphona fq; Sarcophag.: Helicobia helicis. Coleoptera (2)—Coccinell.: Coccinella 9—-notata, Megilla f. Ranunculus fascicularis (7: 107-8).—Blooms March 21-May 20; 45 visitors observed, April 11—May 5; Mi, Y. 162 FLOWERS AND INSECTS—XXVI Long-tongued Bees (9)—Ap. Apis; Ceratin.: Ceratina J Q, fq, in cop, Zaodontomerus ¢'; Megachil.: Osmia illinoensis Eulophus americanus (12: 459-60).—Blooms May 12—June 15; 130 visitors observed, May 28—June 15; Pol, W. Long-tongued Bees (1)—Ceratin.: Zaodontomerus <4, Short-tongued Bees (21)—Prosopid.: Prosopis eulophi ¢ 9, fq, type, illinoensis 4', pygmaea J 9, saniculae ¢ 9, sayi 3 2, thaspii 9, ziziae ¢ 9; Collet.: Colletes aestivalis 2, eulophi <4, type; Halict.: Agapostemon radiatus 9, Chloralictus pruinosus 9, sc, sparsus ¢ Q, se, fq, versatus 9, Evylaeus arcuatus 9, pectoralis 9, se, Halictus lerouxii 9, sc, parallelus 9, Oxystoglossa confusa 9; Andren.: Opandrena personata 9, Trachandrena crataegi 9, sc; Panurg.: Heterosarus 9, se. Other Hymenoptera (30)—Crabron.: Pseudocrabro, Solenius, Xestocrabro 6-maculatus, texanus; Oxybel.: Notoglossa americana, frontalis, Oxybelus packardii; Philanth.: Cerceris clypeata, com- par; Sphec.: Chalybion, Sceliphron; Pompil.: Lophopompilus phil- adelphicus, Planiceps niger, Poecilopompilus navus, Psammochares tenebrosus; Vesp.: Polistes variatus; Ewmen.: Eumenes fraternus, Leionotus foraminatus, ziziae; Thynn.: Methoca; Chrysid.: Hedy- chrum violaceum, wiltii, Holopyga, Tetrachrysis caerulans; Figit.: Psilodora impatiens, Xyalosema; Chalcid.: Chalcis, Perilampus eyaneus, fulvicornis; Ichneumon.: Cryptus exulans. Diptera (59)—Chironom.: Ceratopogon fusculus fq, websteri; Mycetophil.: Sciara atrata; Bibion.: Scatopse pulicaria fq; Stra- tiomy.: Stratiomyia meigenii; Bombyli.: Argyramoeba albofasciata ; Empid.: Empis distans; Syrph.: Allograpta, Eristalis tenax, trans- versus, Mesogramma geminata, marginata fq, Orthoneura nitida, Paragus bicolor, tibialis, Sphaerophoria, Syritta ab, Syrphus ameri- canus, ribesii; Conop.: Oncomyia, Zodion fulvifrons, nanellum; Tachin.: Belvosia unifasciata, Biomyia georgiae (Type Masicera sordicolor Tn.), Cistogaster occidua, pallasi, Euphorocera clari- pennis, Exorista confinis, Ocyptera tenuis, Pachyophthalmus sig- natus fq, Paradidyma, Spallanzania, Trichopoda pennipes, Vivi- ania; Sarcophag.: Helicobia helicis fq, 4-setosa, Sarcophaga cimbicis, hunteri; Musc.: Graphomyia, Morellia fq, Myospila, Phormia regina, Pseudopyrellia; Anthomy.: Calythea, Limnophora fq, Phorbia acra, platura; Ortal.: Rivellia pallida, viridulans; Seps.: Nemopoda, Sepsis fq; Oscin.: Chlorops approximatinervis, mellea, proxima, Hippelates flavipes, plebejus, pusio, Oscinis cox- endix, soror. Coleoptera (7)—Hister.: Hister subrotundus; Lampyr.: Poda- brus tomentosus; Cerambyc.: Euderces; Chrysomel.: Haltica; Mordell.: Mordella marginata fq, Mordellistena limbalis; Curcu- lion.: Centrinites. CHARLES ROBERTSON 201 Hemiptera (2)—Lygae.: Lygaeus; Caps.: Lygus. Heracleum lanatum (12: 459-60).—Blooms May 6—June 17; 274 visitors observed, May 8—June 17; Pol, W. Long-tongued Bees (7)—Megachil.: Alcidamea simplex ¢ 9; Ceratin.: Ceratina ¢ 9, se; Ap.: Apis sc, fq; Nomad.: Heminomada 2, Holonomada superba ¢', Nomada illinoensis 9, Phor 2; Eucer.: Tetralonia dilecta 9. Short-tongued Bees (38)—Prosopid.: Prosopis illinoensis ¢ 9, pygmaea ¢ 9, ab, saniculae J, sayi ¢ 9, fq, in cop, type, ziziae # 9, ab; Collet.: Colletes aestivalis ¢, inaequalis 9, sc; Halict. (9): Agapostemon radiatus se, Chloralictus pilosus sc, fq, sparsus se, versatus sc, fq, Evylaeus pectoralis se, fq, Halictus lerouxii, paral- lelus se, Oxystoglossa confusa, Seladonia; Sphecodini: Drepanium 2, fq, Machaeris illinoensis 2, type, stygia 9, Proteraner ¢, Sphe- codes arvensis 9, heraclei 2, type, Sphecodium cressonii 2; Andren. (2): Andrena carlini, erythrogastra, pruni, sayi sc, Opandrena miserabilis sc, fq, cressonii sec, Parandrena, Ptilandrena g. maculati, Trachandrena claytoniae sc, fq, crataegi, forbesii sc, heraclei se, type, nuda se, fq, rugosa se, spiraeana. Other Hymenoptera (67)—Crabron.: Clytochrysus fq, Lopho- erabro, Ectemnius, Hypocrabro, Protothyreopus rufifemur, Pseudo- crabro fq, Rhopalum pedicellatum, scutellatum, Solenius fq, Xestocrabro 6-maculatus, texanus; Orybel.: Notoglossa americana, Oxybelus niger, 4-notatus fq; Sphec.: Chalybion, Chlorion, Seeli- phron, Sphex vulgaris; Larr.: Notogonidea, Tachysphex acutus; Pompil.: Anoplius illinoensis, virginiensis, Ceropales fraterna, Episyron, Planiceps feralis, Pompiloides marginatus, subviolaceus, Psammochares scelestus, tenebrosus; Vesp.: Polistes pallipes fq, variatus fq, rubiginosus, Vespula germanica, maculata; ELumen.: Ancistrocerus tigris, unifasciatus, Eumenes fraternus, Leionotus anormis, clypeatus, foraminatus, illinoensis, megaera, serophu- lariae, Symmorphus debilis, walshianus; Tiphi.: Tiphia clypeata, inornata, vulgaris ab, type; Chrysid.: Holopyga; Figit.: Eucoila, Eucoilidia; Chalcid.: Haltichella ornata, Elasmus, Perilampus ful- vicornis; Evani.: Foenus tarsatorius; Ichnewmon.: Ichneumon flavizonatus, jucundus, funestus, longulus, Lampronota americana, Phygadeuon vulgaris, Porizon conotracheli, Trogus vulpinus, Try- phon affinis, Metopius terminalis; Bracon.: Microbracon; Ten- thredin.: Dolerus aprilis. Diptera (137)—Mycetophil.: Sciara atrata fq, inconstans; Bibion.: Bibio albipennis, Dilophus obesulus fq, Scatopse pulicaria ; Taban.: Chrysops indus, striatus; Stratiomy.: Nemotelus fq, Odon- 202 FLOWERS AND INSECTS—XXVI tomyia cincta, Stratiomyia apicula, discalis, meigenii fq, quater- naria; Bombylt.: Anthrax alternata, Bombylius atriceps, Toxo- phora; Empid.: Empis distans fq, levicula fq, type, Pachymeria, Rhamphomyia fumosa, mutabilis fq, priapulus ab, rava, Tachy- dromia; Syrph.: Allograpta, Ceria, Chilosia petulea, Chrysogaster nigripes, Criorhina decora, umbratilis, Didea, Eristalis bastardi, dimidiatus fq, transversus fq, Helophilus similis, Mallota cimbi- ciformis fq, posticata, Mesogramma marginata, Myiolepta nigra, strigilata, Orthoneura nitida, pictipennis, Paragus bicolor, Pipiza femoralis, festiva, nigribarba, pulchella, Pterallastes, Sphaero- phoria, Syritta, Syrphus americanus, ribesii, torvus, Temnostoma trifasciata type, Tropidia quadrata, Xylota bicolor; Conop.: On- comyia, Zodion fulvifrons, nanellum; Tachin.: Alophora aeneo- ventris, fumosa, Archytas analis, aterrima, Belvosia unifasciata, Blepharipeza, Brachycoma sarcophagina type, Chaetogaedia analis, Cistogaster occidua, pallasi, Cryptomeigenia, Euphorocera clari- pennis, Gonia capitata, Gymnochaeta, Gymnosoma, Hailarella, Hyalomyodes, Hyalurgus, Leucostoma atra, neomexicana, nigri- cornis, Pachyophthalmus signatus fq, Peleteria, Phorantha humer- alis type, pruinosa type, purpurascens, robertsonil type, Polidea americana type, Senotainia trilineata fq, Sturmia fraudulenta fq, phyciodis, Tachina robusta, Trichopoda pennipes; Sarcophag.: Cynomyia, Helicobia helicis fq, 4-setosa, Sarcophaga aldrichi, as- sidua, bullata, cimbicis, dux sarracenioides, impar, utilis; Musce.: Graphomyia fq, Lucilia caesar ab, sericata fq, sylvarum, Morellia fq, Phormia regina fq, Pseudopyrellia ab; Anthomy.: Antho- myiella fq, Calythea, Limnophora, Phorbia acra fq, platura fq; ‘Seps.: Sepsis; Oscin.: Chlorops mellea, proxima ab, Hippelates flavipes, plebejus, pusio fq, Oscinis coxendix, trigramma, Siphon- ella cinerea, inquilina, Agromyz.: Agromyza latipes, Lobioptera. Lepidoptera (7)—Nymphal.: Basilarchia archippus, Cercyonis, Charidryas, Phyciodes; Papilion.: Iphiclides, Laertias; Hesperv.: Polites. Coleoptera (16)—Dermest.: Anthrenus castaneae, Cryptorho- palum haemorrhoidale, Orphilus; Lampyr.: Telephorus flavipes; Malach.: Anthocomus; Scarabae.: Euphoria sepulchralis, Trichius affinis, piger; Cerambyc.: Euderces; Chrysomel.: Diabrotica 12- punctata, vittata; Mordell.: Mordella marginata, Mordellistena biplagiata fq; Anthic.: Corphyra labiata; Melo.: Macrobasis; Cwr- culion.: Centrinites.. Hemiptera (2)—Corimelaen.: Corimelaena pulicaria; Caps.: Phytocoris. CHARLES ROBERTSON 203 Osmorrhiza longistylis (12: 452, 459-60).—Blooms April 21- May 23; 71 visitors observed, May 4-23; Mis, W. Long-tongued Bees (8)—Megachil.: Ceratosmia 9, Diceratosmia ¢; Ceratin.: Zaodontomerus ¢'; Bomb.: Bombus impatiens 9; Ap.: Apis; Nomad.: Gnathias cuneatus 2, Nomada parva ¢, sayi 9. Short-tongued Bees (24)—Prosopid.: Prosopis illinoensis ¢, pygmaea ¢\, sayi ¢ 9, fq, thaspii ¢, ziziae f; Halict.: (2); Aga- postemon radiatus se, splendens, Augochlora viridula, Chloralietus caeruleus, obscurus sc, type, pilosus sc, sparsus s¢, versatus se, Curtisapis coriacea sc, forbesii sc, Evylaeus pectoralis se, ab, 4- maculatus se, ab, Halictus lerouxii, Oxystoglossa confusa ab, pura, Seladonia; Sphecodini: Proteraner ¢; Andren.: Andrena geranii g, sayi 9. Other Hymenoptera (4)—Eumen.: Ancistrocerus tigris, Eu- menes fraternus; Chrysid.: Holochrysis hilaris; Evani.: Foenus tarsatorius. Diptera (27)—Bombyli.: Aldrichia, Bombylius major; Empid.: Empis distans ab, humilis type, loripedis; Syrph.: Allograpta, Chilosia cyanescens fq, petulea, Mesogramma geminata, marginata, Paragus bicolor, tibialis, Pipiza femoralis, Rhingia, Sphaerophoria, Sphegina campanulata type, rufiventris, Syritta ab, Syrphus ribesii; Conop.: Myepa vesiculosa; Tachin.: Gymnosoma, Peleteria, Siphona fq; Anthomy.: Hylemyia inornata, Phorbia platura; Psil.: Chyliza; Oscin.: Siphonella oscinina. Lepidoptera (2)—Papilion.: Eurymus; Hesperi.: Thanaos martialis. Coleoptera (5)—Bruch.: Bruchus minus; Mordell.: Mordel- listena biplagiata; Anthic.: Corphyra terminalis; Curculion.: Idiostethus subealvus, tubulatus. Hemiptera (1)—Caps.: Lygus. Oxypolis rigidior (12: 459-60).—Blooms July 31-September 8; 157 visitors observed, August 14-September 8; Pol, W. Long-tongued Bees (1)—Ap.: Apis. Short-tongued Bees (6)—Prosopid. (ff 2): Prosopis pygmaea, ziziae ; Halict.: Chloralictus sparsus 2, sc, versatus ¢ 9, se, Halietus lerouxii 2; Sphecodini: Sphecodes arvensis ¢. Other Hymenoptera (73)—Crabron.: Lindenius errans, Sol- enius, Xestocrabro texanus, trifasciatus; Ozybel.: Notoglossa americana, frontalis, Oxybelus packardii, 4-notatus; Philanth.: Cerceris clypeata, compacta; Sphec.: Chalybion fq, Chlorion, Iso- dontia apicalis, Priononyx atrata, Sceliphron; Lerr.: Astatus uni- color, Larropis, Lyroda, Tachysphex belfragei, Tachytes elongatus; 204 FLOWERS AND INSECTS—XXVI Bembic.: Stizus; Nysson.: Hoplisus simillimus, Pseudoplisus phale- ratus; Pompil.: Arachnoproctonus, Cryptocheilus fulgifrons, Lophopompilus philadelphicus, Priocnemoides fulvicornis, Psam- mochares relativus, Sophropompilus; Vesp.: Polistes variatus, rubiginosus; Humen.: Leionotus foraminatus, fundatus, histrion- alis type, ziziae; Scoli.: Elis 5-cincta, Scolia bicineta; Trphi: Tiphia clypeata, punctata type, transversa; Myrmos.: Myrmosa unicolor; Mutil. (¢): Sphaerophthalma, Mutilla hexagona; Chrysid.: Hedychrum violaceum, Holopyga, Tetrachrysis caeru- lans, venusta; Figit.: Aspicera, Cothonaspis, Figites impatiens fq, Xyalosema; Chalcid.: HEutrichosoma, Bruchophagus, Leucopsis, Perilampus fulvicornis, hyalinus; Ichneumon.: Ichneumon flavi- zonatus, Ceratosoma ab; Bracon.: Microdus simillimus, Agathis areolata, Chelonus, Urosigalphus, Apanteles crassicornis, Toxo- neuron abdominale, Macrodyctium, Microplitis croceipes, gortynae, Monogonogastra, Iphiaulax, Opius fuscipennis. Diptera (53)—Mycetophil.: Sciara atrata; Empid.: Par- empis; Syrph.: Allograpta, Mesogramma geminata, marginata, polita, Paragus bicolor, Spilomyia longicornis, Syritta, Syrphus ribesii; Pipuncul.: Chalarus; Conop.: Conops brachyrrhynchus, Zodion nanellum; Tachin.: Alophora aeneoventris, Belvosia uni- fasciata, Cistogaster occidua, Clytiomyia, Epigrimyia geniculata type, Exorista confinis, pyste, Euphorocera claripennis, Gymno- soma, Hypostena indecisa type, Ocyptera dosiades, Pachyophthal- mus signatus, Phorantha pupurascens, Senotainia rubriventris, trilineata, Spallanzania, Trichopoda pennipes; Sarcophag.: Heli- cobia helicis, 4-setosa, Sarcophaga assidua, cimbicis; Musc.: Lu- cilia sericata, sylvarum, Morellia, Musca, Pseudopyrellia; An- thomy.: Anthomyiella, Limnophora, Lispa consanguinea, Phorbia platura; Trypet.: Euaresta bella; Ephydr.: Ochthera; Oscin.: Hip- pelates flavipes fq, plebejus, pusio, Oscinis coxendix, trigramma, Siphonella cinerea; Agromyz.: Agromyza latipes, Leucopis. Lepidoptera (3)—Nymphal.: Basilarchia archippus; Lycaen.: Eupsyche; Hespert.: Limochores taumas. Coleoptera (16)—Coccinell.: Coccinella sanguinea, Hippodamea convergens; Latridi.: Corticaria; Lampyr.: Chauliognathus penn- sylvanicus; Scarabae.: Euphoria sepulchralis; Chrysomel.: Dia- brotica atripennis, 12-punctata, Luperaltica; Bruch.: Bruchus ecru- entatus ; Mordell.: Mordella melaena, Mordellistena limbalis; Melo.: Epicauta cinerea, pennsylvanica, Pyrota germari; Rhipiphor.: Rhipiphorus limbatus; Curculion.: Centrinus picumnus. Hemiptera (4)—Lygae.: Oncopeltus; Caps.: Lygus, Plagiogna- thus; Acanthi.: Triphleps. CHARLES ROBERTSON 205 Neuroptera (1)—Chrysop.: Chrysopa. Aug. 20, 1909, insects taken as they came showed the following 30 species and 85 individuals: Short-tongued Bees (1: 3)—Halict.: Chloralictus versatus 3. Other Hymenoptera (15: 30)—Crabron.: Solenius 1, Xesto- erabro texanus 3; Oxybel.: Notoglossa frontalis 1; Sphec.: Chaly- bion 15, Priononyx atrata 1, Sceliphron 4; Larr.: Lyroda 1; Nys- son.: Hoplisus simillimus 1, Pseudoplisus phaleratus 2; Pompil.: Lophopompilus philadelphicus 2, Prioenemoides fulvicornis 2; Vesp.: Polistes rubiginosus 1, variatus 2; Tiphi.: Tiphia clypeata 1; Chrysid. Tetrachrysis caerulans 1. Diptera (14: 44)—Syrph.: Spilomyia longicornis 1, Syritta 5, Syrphus ribesii 1; Tachin.: Alophora aeneoventris 1, Belvosia uni- fasciata 9, Exorista pyste 1, Ocyptera dosiades 1, Pachyophthalmus signatus 4, Spallanzania 2; Sarcophag.: Helicobia helicis 7, Sar- cophaga assidua 4, cimbicis 5; Musc.: Morellia 2; Anthomy.: An- thomyiella 1. Pastinaca sativa (int, 12:459-60).—Blooms May 15—August 10; 298 visitors observed, June 2—July 9; Pol, Y. Long-tongued Bees (7)—Megachil.: Megachile petulans 9; Ceratin.: Ceratina 9, sc; Bomb.: Bombias separatus 9, Bombus americanorum @° %, impatiens 9; Ap.: Apis; Anthophor.: Anthe- moessa <. Short-tongued Bees (25)—Prosopid.: Prosopis illinoensis ¢ 9, type, pygmaea 9, sayi ¢ 9, ziziae ¢ 9; Collet.: Colletes brevicornis 3, type, eulophi ¢ 9; Halict.: Chloralictus sparsus ¢ 9, se, ab, type, versatus ¢ 9, sc, Curtisapis forbesii ¢, Evylaeus arcuatus 9, pee- toralis 2, sec, Halictus parallelus 2, Oxystoglossa confusa ?, Sela- donia ¢; Sphecodini: Sphecodes arvensis ¢ 9°, ab, clematidis ¢, Sphecodium cressonii ¢ 9; Andren.: Andrena platyparia ¢, pruni 9, se, Opandrena cressonii 2, personata 9, se, type, serotina 9, type, Trachandrena crataegi 9, hippotes 9, nuda 9, se. Other Hymenoptera (94)—Crabron.: Clytochrysus, Ectemnius, Hypocrabro, Protothyreopus rufifemur, Pseudocrabro, Solenius fq, Xestocrabro 6-maculatus, trifasciatus; Orybel.: Notoglossa ameri- cana, emarginata, frontalis type, inornata, Oxybelus 4-notatus; Tryporyl.: Trypoxylon clavatum; Philanth.: Cerceris clypeata, compacta, fumipennis, kennicottii, Philanthus punctatus; Sphee.: Ammobia ichneumonea, pennsylvanica, Chalybion, Isodontia api- ealis, Sceliphron, Sphex nigricans, vulgaris; Larr.: Astatus unicolor, Lyroda; Nysson.: Pseudoplisus phaleratus; Pompil.: Anoplius illi- noensis, virginiensis, Arachnoproctonus, Ceropales fraterna, 206 FLOWERS AND INSECTS—XXVI Lophopompilus atrox, philadelphicus, Poecilopompilus navus, Pom- piloides americanus fq, divisus, marginatus, subviolaceus, Psam- mochares tenebrosus; Vesp.: Polistes pallipes, Vespula maculata; Eumen.: Ancistrocerus campestris, tigris, unifasciatus, Eumenes fraternus, Leionotus foraminatus fq, fulvipes, scrophulariae, ziziae, Monohia, Symmorphus debilis, walshianus, Zethus; Scoli.: Elis 5- eincta; Tiphi.: Tiphia vulgaris; Mutill. (¢): Sphaerophthalma, Mutilla hexagona; Chrysid.: Hedychrum violaceum, Holopyga fq, Tetrachrysis nortonii; Figit.: Aspicera, Psilodora impatiens; Chalcid.: Leucospis, Perilampus triangularis, cyaneus, platygaster, Pachyneuron; Hvani.: Foenus incertus, tarsatorius, Hyptia; Ichneu- mon.: Agrothereutes limatus, Ichneumon flavizonatus, jucundus, succinctus, Colpognathus, Cryptus rufoannulatus, Eiphosoma, Glypta simplicipes, Hemiteles, Porizon conotracheli, Proclitus, Tro- gus, Metopius terminalis; Bracon.: Orgilus, Euphorus; Cardio- chiles, Habrobracon, Microplitis gortynae, Iphiaulax; Tenthredin.: Hylotoma humeralis; Scelion.: Teleas. Diptera (114)—Mycetophil.: Sciara atrata, vulgaris; Bibion.: Seatopse pulicaria; Taban.: Chrysops striatus, Therioplectes; Stra- tiomy.: Allognosta fuscitarsis, Stratiomyia meigenii; Bombylv.: Anthrax sinuosa, Argyramoeba oedipus; Scenopin.: Scenopinus; Empid.: Empis distans, Parempis; Syrph.: Allograpta fq, Baccha aurinota, fuscipennis, Didea, Eristalis aeneus, dimidiatus, flavipes, transversus, Helophilus latifrons, similis, Mallota cimbiciformis, Mesogramma geminata, marginata fq, Orthoneura nitida in cop, Paragus bicolor, tibialis, Pipiza festiva, nigribarba, pulchella, Platy- chirus hyperboreus, quadratus, Sphaerophoria, Syritta fq, Syrphus arcuatus, ribesii, Tropidia quadrata; Conop.: Conops brachyrrhyn- chus, Myopa vesiculosa, Zodion nanellum; Tachin.: Araba, Belvosia unifasciata fq, Biomyia, Blepharipeza, Brachycoma intermedia type, Ceratomyiella, Chaetoplagia, Cistogaster occidua, Clytiomyia, Cryptomeigenia, Distichona varia, Ennyomma globosa, Kumyo- theria illinoensis type, Euphorocera claripennis, Exorista confinis fq, nigripalpis, Frontina aletiae, frenchii, Gymnosoma, Gymno- prosopa clarifrons type, Linnaemyia fq, Macquartia, Ocyptera tenuis, Pachyopthalmus signatus, floridensis, Phorantha purpuras- cens, Senotainia rubriventris, trilineata, Spallanzania, Sturmia inquinata, Tachina mella, rustica, Trichopoda pennipes fq, Tricho- phora, Winthemia fq, Xanthomelana; Sarcophag.: Helicobia helicis fq, 4-setosa, Sarcophaga alcedo, assidua, cimbicis, haemorrhoidalis, hunteri, sinuata; Musc.: Calliphora erythrocephala, Compsomyia fq, Graphomyia, Lucilia caesar, Morellia fq, Musca, Myospila, Phor- mia regina, Protocalliphora, Pseudopyrellia; Anthomy.: Calythea, CHARLES ROBERTSON 207 Hyetodosia, Limnophora, Ophyra fq, Phorbia acra fq; Ortal.: Camptoneura, Rivellia viridulans, Seoptera; Sapromyz.: Sapro- myza vulgaris; Seps.: Sepsis; Oscin.: Chlorops assimilis, mellea, proxima, Hippelates flavipes, pusio, Meromyza, Ossinis soror; Agro- myz.: Lobioptera. Lepidoptera (9)—Nymphal.: Anosia, Basilarchia astyanax, Hypatus; Lycaen.: Chrysophanus, Cyaniris, Thecla calanus; Hes- peri.: Limochores taumas; Sesi.: Sesia pictipes; Pyromorph.: Har- risina. Coleoptera (42)—Coccinell.: Coccinella 9-notata, sanguinea, Hippodamea parenthesis, convergens, Megilla; Dermest.: Anthrenus castaneae, Attagenus fq, Cryptorhopalum haemorrhoidale; Nitidul.; Carpophilus; Elater.: Agriotes; Buprest.: Agrilus difficilis, egenus; Lampyr.: Calopteron, Chauliognathus marginatus, Photinus, Poda- brus rugulosus, tomentosus, Pyractomena, Telephorus flavipes; Malach.: Anthocomus, Attalus; Scarabae.: Euphoria fulgida, sepul- chralis, Trichius piger; Cerambyc.: Acmaeops directa, Callimoxys fuscipennis, sanguinicollis, Euderces, Typocerus sinuatus, velutinus ; Chrysomel.: Anomoea, Diabrotica vittata, Pachybrachys, Tri- rhabda; Melandry.: Nothus; Mordell.: Mordella marginata, melaena, 8-punctata, Mordellistena ornata, Pentaria; Melo: Epi- cauta cinerea, Macrobasis. Hemiptera (6)—Corimelaen.: Corimelaena pulicaria fq; Beryt.: Corizus; Lygae.: Lygaeus; Caps.: Lygus, Phytocoris, Plagiogna- thus. Neuroptera (1)—Chrysop.: Chrysopa. Polytaenia nuttallii (12: 459-60).—Blooms May 3—June 17; 75 visitors observed, May 9—June 8; Mis, Y. Long-tongued Bees (4)—Megachil.: Coelioxys 8-dentata ¢; Bomb.: Bombus americanorum 9; Ap. Apis; Nomad.: Nomada illinoensis 9. Short-tongued Bees (20)—Prosopid. (¢ 2): Prosopis pygmaea in cop, ziziae ab; Collet.: Colletes aestivalis ¢ 9, inaequalis 9, se; Halict (2): Augochlora fervida, viridula, Chloralictus pilosus se, pruinosus sc, sparsus sc, tegularis sc, versatus sc, Evylaeus pec- toralis, Odontalictus se, Oxystoglossa similis se, Seladonia se; An- dren.: Andrena nasonii 2, se, Opandrena cressonii ¢ Q, se, ziziae ff 9, se, Trachandrena crataegi 9, se, forbesii 9. Other Hymenoptera (20)—Crabron.: Ectemnius, Hypoerabro, Pseudocrabro, Solenius; Sphec.: Sceliphron; Vesp.: Polistes pal- lipes, variatus; Eumen.: Ancistrocerus campestris, Eumenes fra- ternus, Leionotus anormis, clypeatus, foraminatus, histrionalis, 208 FLOWERS AND INSECTS—XXVI illinoensis, scrophulariae, vagus, ziziae, Symmorphus walshianus; Tiphi.: Tiphia inornata; Chalcid.: Hurytoma. Diptera (17)—Strotiomy.: Allognosta obscuriventris, Nemotelus, Stratiomyia apicula; Syrph.: Allograpta, Mesogramma geminata, marginata, Paragus bicolor, tibialis, Sphaerophoria, Tropidia mamillata; Conop.: Oncomyia, Zodion fulvifrons; Tachin.: Cisto- gaster occidua, pallasi, Leucostoma atra, nigricornis, Linnaemyia, Phorantha purpurascens; Musc.: Pseudopyrellia; Anthomy.: Phorbia acra ab, platura; Ortal.: Rivellia pallida; Oscin.: Chlorops proxima, Hippelates flavipes; Agromyz.: Leucopis, Lobioptera. Coleoptera (1)—Curculion.: Centrinites. Hemiptera (3)—Beryt.: Corizus; Pentatom.: Euschistus icteri- cus; Caps.: Lygus. May 20, 25, 26, 1910, insects taken as they came to the flowers showed the following 37 species and 294 individuals: Long-tongued Bees (2:5)—Bomb.: Bombus americanorum 1; Ap. Apis 4. Short-tongued Bees (12:126)—Prosopid.: Prosopis ziziae 3; Collet.: Colletes aestivalis 18; Halict.: Augochlora fervida 4, viri- dula 2, Chloralictus versatus 18, Evylaeus pectoralis 1, Oxysto- glossa similis 9, Seladonia 5; Andren.: Opandrena cressonii 9, ziziae 45, Trachandrena crataegi 11, forbesii 1. Other Hymenoptera (9: 32)—Crabron.: Hypocrabro 1, Solenius 2; Vesp.: Polistes variatus 15; Humen.: Eumenes fraternus 1, Leionotus foraminatus 4, histrionalis 4, illinoensis 1, ziziae 2, Sym- morphus walshianus 2. Diptera (12: 127)—WStratiomy.: Nemotelus 3, Stratiomyia api- cula 2; Syrph.: Mesogramma geminata 1, marginata 11, Paragus bicolor 1, tibialis 1; Conop.: Oncomyia 1, Zodion fulvifrons 1; Musc.: Pseudopyrellia 2; Anthomy.: Phorbia acra 99, platura 4; Agromyz.: Lobioptera 1. Hemiptera (2:4)—Beryt. Corizus 3; Pentatom.: Euschistus ictericus 1. Sanicula canadensis.—Blooms May 30-July 20; four visitors observed, June 15, 17; Mis, W. Short-tongued Bees (3:3)—Halict. (2): Chloralictus versatus 1, Evylaeus 4-maculatus 1; Prosopid.: Prosopis saniculae 9, 1. Diptera (1: 2)—Syrph.: Mesogramma geminata 2. Sanicula marilandica.—Blooms May 6—June 5; 31 visitors ob- served, May 14, 16, 25; Mis, Y. Short-tongued Bees (14)—Halict. (2): Augochlora viridula, Chloralictus sparsus, tegularis, Curtisapis coriacea, Evylaeus foxii, CHARLES ROBERTSON 209 Oxystoglossa confusa; Prosopid.: Prosopis pygmaea ¢, saniculae 3; type, sayi g', ziziae 9; Andren.: Opandrena cressonii 2, se, per- sonata