Full text of "Flowers and insects; lists of visitors of four hundred and fifty-three flowers"

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L161— 01096 



FLOWERS AND INSECTS 

LISTS OF VlSll OKS OF FOUR HUNDRED AND 
FIFTY-TIIRFE FLOWERS 



By 

CHARLES ROBERTSON 



CARUNVILLE, ILUNOIS 

\')1H 



THE SCIENCE PEESS FEINTING COMPANY 
LANCASTEE, PA. 



Copyrighted 1929 
By Charles Robertson 



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//. / (i> M01.0«l 



-Ti^^ 



PREFACE 



Beginning September, 1S87, and ending July, 1899, the papers 
mentioned in the bibliography record 7,817 visits to 278 flowers. 
The i)resent 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 \isits, and his " Alpenblumen" 
gives 8,491. 

The ob.senations were made within ten miles of Carlinville. 
The number of species of bees found on flowei-s at Carlinville is 
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 Hyraenop- 
tera by W. H. Ashmead, Nathan Banks, J. C. Crawford, E. T. 
Cresson, R. A. Cushman, A. B. Gahan, W. J. Fox, L, 0. Howard, 
Thco 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 Hen.shaw; in Hemiptera by C. A. 
Hart, H. M. Parshley, and P. R. Uhler; in Neuroi)tera by Nathan 
Banks and J. C. Crawford. 

In 1887 names were rather readily obtained for Syri)hidae, 
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 IlNTnenoptcra 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 ca.se 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, Bomhus ameri- 
canorum and Bomhias auricomus, had the females mixed under the 
name of Bomhus pennsylvanicus and were referred to the male of 
Bomhias auricomus, while the male of Bomhus americanorum was 
referred to another genus as Apathus? elatus. The female of 
another species was identified for me as Bomhus ridingsii. The 
worker was mentioned in 13, 579, 1891, and the male in 4, 65, 1891. 
But Bomhus ridingsii turned out to be a sex name of Bomhus hi- 
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 aU of the kinds which 



CHARLES ROUERTSUS 5 

occur on the flowers. They are worthless as data of insect habits 
because the collector is certain to select the llowei-s which are most 
favorable for obsen'ation and which are most attractive to the kinds 
of insects he is after. Collectoi-s' notes almost invariably fail to 
indicate what the insects are doiuf? on the flowei-s and whether they 
affect pollination or not. 

The followinj? persons made additions to the local lists of the 
plants mentioned — Prof. I. H. Benham: Blephilia hirsula, Eupa- 
torium perfoliatum, Teucrium canadense; Georpe T. Palmer: 
Erujeron ramosus, Sftachys palustris; Robertson Palmer: Ellisia 
nyctflaca, Jlypoiis hirsutn, Pohmonium rcpfans, Smnbucus cana- 
densL<:, ScutcUana imrvula; H. B. Parks: Achillea viilU folium, 
Apocynum cannabinum, Blephilia ciliata. Cassia chamaccrista, 
Ceanothiis americanus, Cicuta ma^ulafa, Cucurhita pepo, Eryngium 
yuccifolium, Eulophtts amencanus, Lcpachys jrinnata, Monarda 
fistulosa, Pastinaca satira, Polyyala sanguinea, Prunus americana, 
P. serotina, Pycnantheminn flesuosum, P. pilosum, Rhus copallina, 
R. glabra, Rosa humilis, R. setigera, Salix nigra, Samhucus cana- 
densis, Stenanthixim august if olimn, Veronica inrginica. 

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 Aiiosia plcxippus it is 
a little tiresome to change it back to former name, and then to 
Danaus. An3'how, biological nomenclature is s\nion}Tnical. 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 synon^Tny is a subject of con- 
troversy. Of 455 plants mentioned here, about 70 have their names 
chanircl in fJrav's Manual. 



Flowers and Insects 

Signs, Abbreviations, Etc. 

ab = abundant; c = collecting pollen; cf = collecting and feeding 
on pollen ; csp = 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; Ip = 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-toiigued bee flower; mp = 
maxillary palps; n = non-pollinating; = ornithophilous; ol = oli- 
golege ; Pol = polytropic ; pred = predaceous ; R = red and all dark 
colors; S = sphingophilous ; sc = sucking nectar and collecting pol- 
len ; sf = sucking nectar and feeding on pollen ; W = white ; Y = yel- 
low, greenish to orange ; (^ = male ; $ = 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. ($, c)" means that all of the fol- 
lowing Ilalictidae are females and all collecting pollen. 

After family names the ending "idae" is not repeated, as 
Ifalict. 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 $. 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 names used are those of the 7tli 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. 

Gener.\l Synonym ical List 
The following is a list of all the in.sects 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. = A.shmead, B. B, = Brauer and 
Bergenstanim, B. L. = Boi.sduval and Leconte, Br. = Brulle, Bs. = 

7 



8 FLOWERS AND INSECTS— XXVI 

Boisduval, Bv. = Beauvois, Cc. = Cockerell, Cm. = Cramer, Cq. = Co- 
quillett, Cr. = Cresson, Dh. = Dalilbom, Dg. = De Geer, Dr. = Drury, 
Ds. = Desvoidy, Ed. = Edwards, F. = Pabricius, 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. = Melslieimer, Nr. = Norton, Nw. = Newman, 01. = Oli- 
vier, 0. S. = Osten Saeken, Pc. = Packard, Pr. = Provancher, Pt. = 
Patten, Rb. = Robertson, Rl. = Riley, Sc. = Scudder, Sm. = Smith, 
Ss. = Saussure, Tn. = Townsend, Wd. = Wiedemann, ^Tc. = Walker, 
Wl. = Williston. 

Birds 
Troehilidae: Trochilus colubris L. 

Long-tongued Bees. (146) 
AntJiopJioridae : Amegilla walshii Cr., Anthemoessa abrupta 
Say, Anthophora "ursina Cr., Clisodon terminalis Cr., Emphoropsis 
floridana Sm. ; Apidae : Apis mellif era L. ; Bomhidae : Bombias 
auricomus Rb., type, scutellaris Cr., separatus Cr., Bombus ameri- 
canorum F., consimilis Cr. (vagans Sm.), pennsylvanieus Dg., 
ridingsii Cr., (bimacnlatus Cr.), impatiens Harris, Psithyrus 
laboriosus F., variabilis Cr. ; Ceratinidae (females mixed) ; Ceratina 
dupla Say, Zadontomerus calcaratus Rb., type; Emphoridae: 
Emphor bombiformis Cr., Melitoma taurea Say; Epeolidae: Ar- 
gyroselenis minimus Rb., type, Epeolus autumnalis Rb., type, bi- 
faseiatus Cr., coreopsis Rb. MS, interruptus Rb., type, lectoides 
Rb., type, pusillus Cr., Triepeolus concavus Cr., concolor Rb., type, 
cressonii 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, cnici 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, vemoniana Rb., type, vernoniae Rb., type, 
Peponapis pruinosa Say, Tetralonia belfragei Cr., dilecta Cr. 
(speciosa?), dubitata Cr., illinoensis Rb., type, robertsoni Cc, type, 
rosae Rb., type, Xenoglossa strenua Cr., Xenoglossodes albata Cr. ; 
MegacMlidae: Osmiinae, Osmiini: Alcidamea simplex Cr., truncata 
Cr., Ashmeadiella bucconis Say, Centrosmia bucephala Cr., Cera- 
tosmia lignaria Say, Diceratosmia conjuncta Cr., Gnathosmia 



CHARLES ROBEIiTSON 9 

georgica Cr., Hoplitis cylindrieus Cr., Leuoosmia albivcntris Cr., 
Monilosmia canadensis Cr., Osmia atriventris Cr., coUin.siae Rb., 
type, cordata Rb., type, di.stincta Cr., illinoensis Rb., type, piimila 
Cr. ; Trypetini ; Neotrypetes barbatus Rb.. type, produetus Rb., type 
(9 mixed with that of the next), triincatu.s Rb. MS, Prochelostoma 
philadolphi Rb., type; Megachilinae, Megachilini: Autheraois cen- 
tuneidaris L., Chelostenioide.s rufimanus Rb., type, Cyphopyga mon- 
tivaga Cr., Megachih' addenda Cr., brevis Say, generosa Cr., niendica 
Cr., petulans Cr.. G-dentata Rb., type, stropho.stylis Rb., type, Oligo- 
tropus campanulae Rb., type, Saroga.ster gcorgica Cr., Sayapis 
pollicans Say, pugnata Say, sayi Cr., Xanthosarus latimanus Say; 
Coiliojyiui: Coelioxys alternata Say, gennana Cr., modesta Sm., 
8-dentata Say, rufitarsi.s Sni., sayi Rb., type; Melcctidae: Melecta 
inteniipta Cr., Hoinbomelecta thoracica Cr. ; Nomadidae: Centrias 
americanus Kirby, crigerontis Rb., type, Cephen texanus Cr., 
(Jnatliias euneatus Rb., type, ovatus Rb., type, xanthoi)arius Rb. 
MS. Ileminomada obliterata Cr., Holonomada affabilis Cr., placida 
Cr., superba Cr., vincta Say, Nomada cre.s.sonii Rb., type, denticnlata 
Rb., type, illinoen.sis Rb., type, parva Rb., type, salicis Rb., type, 
sayi Rb.. type, simplex Rb., type, vicina Cr., Phor integer Rb., type, 
Xanthidium dentariae Rb., /.i/pc, luteohjides Rb., type, luteolum 01.; 
I'asitidiu: lloleopasites 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 trj-- 
petinum Rb., type; Xylocopidae: Xylocopa virginica Dr. 

Short-tongued Bees. (151) 
Andrenidae: Andrena arabis Rb., type, carlini Cc., type, eomi 
Eb., type, dunningii Ce., crjthroga.stra Ash., erj'thronii Rb., type, 
geranii Rb., type, illinoen.sis 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, tridcns Rb., type, Iomelis.sa 
violae Rb., type, Opandrena cressonii Rb., type, dubia Rb., type, 
misenibilis Cr., pei-sonata Rb., type, serotina Rb., type, ziziac Rb., 
type, Parandrena andrenoides Cr.. Pterandrena aliciae Rb.. type, 
asteris Rb., type, helianthi Rb., type, krigiana Rb.. type, lauracea 
Rb., type, j)ulfhella Rb., type, nulbeckiae Rb., type, solidaginis Rb., 
type, Ptilandrena erigeniae Rb., tjipr, g. maculati Rb., type, pole- 
monii Rb., type, Trachandrena cla>-toniae Rb., type, crataegi Rb., 
type, forbcsii Rb., type, heraclei Rb., type, hippotcs Rb., type. 



10 FLOWERS AND INSECTS— XXVI 

mai'iae Rb., type, nuda Rb., tyjje, obscura Rb., type, quintilis Rb., 
type, rugosa Rb., type, spiraeana Rb., type; Colletidae: Colletes 
aestivalis Pt., albescens Cr., amerieanus Cr., armatus Pt., brevicor- 
nis Rb., type, compaetus Cr., eulophi Rb., type, inaequalis Say, lati- 
tarsis Rb., type, nudus Rb., type, productus Rb., type, robertsonii 
Dalla Torre, type, simiHs Rb., type, speciosus Rb., type, willistonii 
Rb., type; Dufoureidae: Halictoides marginatus Cr. ; Halictidae: 
Agapostemon radiatus Say, splendens Lp., texanus Cr., viridulus 
F. (virescens F.), Augoehlora fervida Sm., viridula Sm., Chlora- 
lictus albipennis Rb., type, caeraleus Rb., type, coreopsis Rb., type, 
cressonii 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., Dialietus 
anomalus Rb., type, Evylaeus areuatus 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., Maehaeris illinoensis Rb., type, stygia Rb., type, Proteraner 
ranunculi Rb., type, Sphecodes arvensis Pt., clematidis Rb., type, 
heraclei Rb., type, minor Rb., type, Spheeodium cressonii Rb., type, 
pimpinellae Rb., type, pycnanthemi 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., tyjw, eomposi- 
tarum Rb., typ)e, labrosiformis Rb., type, labrosus Rb., type, rud- 
beckiae Rb., type, rugosus Rb., type, solidaginis Rb., type, Ver- 
benapis verbenae Cc, Zaperdita maura Cc. ; 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) 

Bemhicidae: Bembix nubillipennis Cr., spinolae Lp., Bieyrtes 

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 ccllularis Say; Bracoiiidoc (incluc]in<? Alysiitlae and Vipi- 
onidae) : Afuit^niostomus loiif^ipalpus Cr., A^athis areolata Ash., 
type, vuljjaris Cr., Apantelcs era.ssicornis Pr., illinoeu-sis Ash. MS, 
terminalis IJalian, Hassiis sanetus Say, Bracon aslimeadi Morrison, 
type, lon«?ic'auda Pr., simpk'x Cr., trifolii Ash. (pyf?maeus Pr.), 
venioniae Ash. (nu'llitor Say), Cardiochilos tibiator Say, Chelonus 
soriecus Say, Dacnusa flavicincta Ash., Earinus limitaris Say, 
Euphorus mcllipcs Cr., Ilabrobracon ^clecliiae Ash., Ijjhiaulax 
nigator Say, ]\Iacrodyetium apicatus Pr., Microbracon tortricicola 
Ash. (vanabilis Pr.), Mierodus simillimus Cr., Microga.ster gele- 
chiae Rl., Microplitis ceratomiae Rl., croceipes Cr., gortynae Rl., 
^[onogono»rastra fuseipcnnis Ash. MS, Opius fuscipcnnis Gahan, 
ruficeps Pr. (provanchcri Dalla Torre), Orgilus rileyi Ash. (divLsus 
Cr.), Toxoneuron abdominale Cr., viator Say, I'rosigalphus femor- 
atus Ash., Vipio robortsonii A.sh. ;MS; Chalcididac (including 
Elasmidae, Encyrtidac, Eulophidac, Euiytomidae, Lcucospidae, 
Pcrihimpidae, Pteromalidae) : Bi-uchophaj^us I'uncbris Howard, 
Chalcis iiavipos F. (ovata Say), Chrj'socharis o.seinidis Ash., Elas- 
mus nigripes Howard, Eurjioma diastrophi Walsh, studiosa Say, 
p]utelus flavipes \Vk., Eutriehosoma mirabilis Ash., Haltichella 
ornata Wk., xanticles VTk., Leucospis affinis Say, Pachyneuron 
mesograptae Ash., Perilampus cyaneus Br., fulvicomis Ash., hya- 
linus Say, platygaster Say, robertsoni Crawford, type, triangularis 
Say, Smicra debilis Say, torvina Cr., Sjmtomopus americanus 
Ash.; Crysididae: Chry-sis intricata Br., texana Gribodo, Gonochr>'- 
sis perpulehra Cr., Hedychridium dimidiatum Say, Hydychrura 
parvum Aaron, violaecum Br., wiltii Cr., Holochrysis hilaris Dh., 
verticalis Pt., Ilolopyga ventralis Say, ^Ionoehr\sis parvula F., 
Notozus hyalinus Aaron, Tetrachrj-sis eaerulans F., montana Aaron, 
nitidula F., nortonii Aaron, venusta Cr. ; Crahronidac: Anaerabro 
ocellatus Pc, Blepharipus harringtonii Fox, Clytochn'.sus obseurus 
Sm., Ectemnius atriecps Cr., Entomognathus texanus Cr., Ilypo- 
crabro 10-maculatus Say, Lindenius errans Fox, robertsoni Rohwer, 
type, Lophocrabro singularis Sm., Protothyreopus bigominus Pt., 
nififemur Pc., P.seudocrabro chiysargirus Lp., Rhopalum pedieel- 
latum Pc, seutellatum Say, Solcnius interniptus Lp., Synothyre- 
opus tumidus Pc, Xestocrabro 6-maculatus Say, texanus Or., 
trifasciatus Say; Eumcnidae: Ancistrocerus campostris Ss., capra 
S.S., catskillensis Ss., tigris Ss., unifa.sciatus Ss., Eumenes belfragei 
Cr., fratemus Say, Lcionotus anormis Say, ancnsis Ss., clypcatus 
Rb., type, dorsalis F., foraminatus Ss., fulvij)cs S.s., fundatus Cr., 
liistrionalis Rb., type, illinoensis Rb., type, Icucomeias Ss., mogaera 
Lp., molestus Ss., pcrcnnis Ss., 4-scctus Say, scroi)hulariae 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) aleol- 
huus Ss., zendaloides Rb., type, Zethus spinipes Say; Evaniidae: 
Foenus incertus Cr., tarsatorius Say, Hyptia reticulata Say; Figi- 
tidae: Aspieera 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 
obscurus 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., suceinctus 
Br., Idiolespa analis Grv. (limatus Cr.), Lampronota americana 
Cr., eoxalis 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 Rl., Proelitus 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 Pc, Hoplisoides nebulosus Pc, Hop- 
lisus atricornis Pc, simillimus Sm., Nysson plagiatus Cr., rufiven- 
tris Cr., Zanysson aurinotus Say, plesia Rohwer, Pseudoplisus 
divisus Sm., phaleratus Say, Silaon inerme Cr. ; Oxyhelidae: 
Notoglossa americana Rb., tyj^e, cressonii Rb., type, emarginata 
Say, frontalis Rb., ty2:)e, inomata Rb., tyjye, Oxybelus laetus Say, 



CHARLES ROBEIiTSOy 13 

niger Rb., type, packardii Rb., type, 4-notatus Say; Pemphrcdon- 
Ulae: Cemonus inornatus Say, Mimosa cressonii Pc, Psen tibialis 
Cr. ; Philanthidac (including Ccreciidae) : Cerceris astarte Banks, 
bicornuta Guerin, clypeata Dh., compaeta Cr., compar Cr., echo 
^liekel, finitima Cr., lulvipes Cr. ( fulvipediculata Schlet.), fuini- 
pennis Say, insolita Cr., kennicottii Cr., proininons liank.s, raui 
RohwiT (frontata Say?), robertsonii Fox, cotype, rufinoda Cr., 
Euc'crceris zonatus Say, Philanthus politus Say, punctatus Say, 
ventilabris F. ; PompUhlac: Aseniella accepta Cr., lonfjula Cr., 
pctiolata Cr., Anoplius illinocnsis Rb., type, virginiensis Cr., 
Arachnoproctoniis fcnoigineus Say, Batizonus algidus Sm., Cero- 
pales bipunetata Say, clcgans Cr., fratema Sm., fulvipcs Cr., 
robinsonii Cr., Cryptocheilus agenioides Fox, conicus Say, fulgifrons 
Cr., Episyron biguttatus F., Lophopompilus atrox Dh., philadel- 
phicus Lp., Plaiiic'ops frralis Cr., niger Cr., Poccilopompilus inter- 
ruptus Say, navus Cr., Pompiloides amcrieanus Bv., divisus Cr., 
marginatus Say, subviolaceus Cr., Priocnomis arcuatus Banks, 
Priot-ncmoides fulvieornis Cr., toi-minatus Say, unifasciatus Say, 
Psammoehares pretiosa Banks, rchitivus Fox, cotype, scclcstus Cr., 
tenebrosus Cr., Pseudagenia mellipes Say, Sophropompilus in- 
genuus Cr. ; Sapygidae: Sapyga eentrata Say; Scelionidae : Prosa- 
cantha illinoensis Ash. IMS, Teleas lineaticeps Ash.; Scoliidae: 
Campsomeris confluenta Say, Elis interrupta Say, ob.scura F., 
thoracica Fox, type, 5-cincta F., Scolia bicincta F., nobilitata F. ; 
Sphccidac: Ammobia ichnoumonea L., nuda Femald, pennsyl- 
vanica L., Chalybion cacruleum L., Chlorion caeruleum Dr., Iso- 
dontia apicalis Sm., macroeephala Fox, Palmodes dimidiata Dg., 
Priononj'x atrata Lp., thomae F., Sceliphron eomentarius Dr., 
Sphex gracilis Lp., nigricans Dh., pictipennis Walsh, procera King, 
vulgaris Cr. ; Tenthrcdinidae (including Xydidac) : Dolorus 
aprilis Nr., arv'cnsis Say (unicolor Bv.), bicolor Bv., sericeus Say, 
Hylotoma humcralis Bv., macleayi Leach, ^lacrophya epinota Say, 
pleuricincta Nr. (nebraskensis Rohwer), Macroxycla ferruginea 
Say, Monophadnus medius Nr., Nematus lutcotorgura Nr., verte- 
bratus Say, Opisthoneura albidovariata Nr., P.seudosiobla excavata 
Nr. ; Thynnidac: Methoca stygia Say; Tiphiidac : Tiphia clypeata 
Rb., type, illinoensis Rb., type, inomata Say, punctata Rb., type, 
robert.soni Malloch, type, transversa Say, vulgaris Rb., type; 
Tryporylidae: Trj-poxylon clavatum Say, frigidum Sm., triden- 
tatum Pc. ; Vespidae: Poli.stcs annularis L., pallipcs Lp., rubi- 
ginosus Lp., variatus Cr., Vcspula cuncata F., germanica F., 
maculata Tj., vidua Ss. 



14 FLOWERS AND INSECTS— XXVI 

DiPTERA. (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 albicincta FL, Coenosia antennalis Stein, antica Wk. 
(leueoprocta Wd.), fuscopunctata Mc. (ovata Stein), lacteipennis 
Mg., sexnotata Mg., Hammomyia paludis Johansen, Homalomyia 
canicularis L., prostrata Rossi (incisurata Zett.), Hydrophoria 
ambigua FL, 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 Wk., 
cinerella F., platura Mg., Proboscimyia siphonina Bigot; 
Bihionidae: 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., halcyon Say, hypomelas Mc, 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 Mc, fasciata Mc, fasci- 
pennis Say, Geron calvus Lw., rufipes Mc, Lepidophora lepidocera 
Wd., Oncodocera leueoprocta Wd., Phthiria aldrichi Johnson, 
cincta Cq. MS, sulphurea Lw., Sparnopolius fulvus Wd., Systoechus 
vulgaris Lw., Systropus macer Lw., Thlipsogaster ater Cq., Toxo- 
phora amphitea Wk., Borloridae: Borborus equinus FL ; Chiron- 
omidae: Ceratopogon fusculus Cq., websteri Cq., Conopidae: 
Conops brachyrrhynchus Mc, sylvosus WL, xanthopareus WL, 
Dalmannia nigriceps Lw., Myopa pilosa WL, vesiculosa Say, 
Oncomyia loraria Lw., Physocephala texana WL, tibialis Say, 
Robertsonomyia palpalis Rb., type, Stylogaster biannulata Say, 
neglecta WL, Zodion fulvifrons Say, nanellum Lw., obliquefasciatum 
Mc; 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: Braehystoma 
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., piligerouis Cq., type, priapulus Lw., rava Lw., ravicla Cq., 
typcaordidix Lw., tersa L\{., Taehydromia pusilla Lw., Ephydridae; 
Notiphila unicolor Lw., Ochthera lauta Wlu'clor, prcd. ; Iletero- 
nexiridae: Clusia lateralis Wk. ; Leptidac: Ililarimorpha mikii Wl., 
type; Lonchae idae : Lonchaea parvieornis Mp., aberrans Malloeh, 
cotype; Midaidac: Midas clavatiis Dr., tibialis Wd. ; Muscidae: 
Compsoniyia macellaria P., Graphomyia aniericana Ds. (maculata 
Seopoli), Lucilia caesar L., sericata Mg., sylvarum Mg., Morellia 
micans Mc., Musca domestica L., Muscina assimilis PL, Myospila 
meditabunda P., Phormia regina Mg., terraenovae Ds., Pollenia 
rudis P., Protocalliphora splendida Me., Pseudopyrellia cornicina 
P., Stomoxys calcitrans L. ; Mycetophilidac: Dynato.soraa thoracica 
Cq., type, Eugnoriste occidentalis Cq., Sciara atrata Say, incon.stans 
Piteh, vulgaris Pitch; Nemcsfrinidae: Rhynchocephalus saekeni 
Wl. ; Ortalidae: Camptoneura picta Me., Chaetojisis aenea Wd., 
Euxcsta notata Wd., Rivellia pallida Lw., 4-fasciata Mc, viridulans 
Ds., Seoptera colon Lw. ; Oscinidae: Chlorops approximatonervis 
Zett., a.ssimilis ^Me., mellea Lw., proxima Say, pulverea Cq., versi- 
color Lw., Elachiptera costata Lw., flavida Wl., Hippelates flavipes 
Lw., plebejus Lw., pusio Lw., Meromyza americana Pitch, Oscinis 
coxendix Pitch, soror Mc, trigramma Lw., Siphonella cinerea Lw., 
inquilina Cq., oscinina PI. ; Phoridae: Phora fungicola Cq., Trineura 
aterrima P.; Pipunculidae : Chalarus spurius PI. ; Psilidae: Chyliza 
apicalis Lw. ; Sapromyzidae: Sapromyza longipennis P., vulgaris 
Pitch; Sarcophagidae (Calliphora and Cynomyia belong to Musci- 
dae) : Boettcheria cimbicis Tn., Calliphora erythrocephala Mg., 
vomitoria L., Cynomyia cadaverina Ds., Helicobia helicis Tn., 
4-setosa Cq., ^letoposarcophaga pachyprocta Parker, Sarcophaga 
alcedo Al., aldrichi Parker, assidua Wk., bullata Parker, cimbicis 
(pallinervis Thompson), dux sarracenioides Al., haemorrhoidalis 
PI., hunteri Hough, impar Al., marginata Al., sinuata Mg., utilis 
Al.; Scatophagidae: Cordylura munda Lw., Scatophaga furcata 
Say; Scenopinidac : Scenopinus nubillipes Say; Sciomyzidae: 
Sciomyza humilis Lw., Tetanocera pictipes Lw. (umbrarum L.) ; 
Sepsidae: Nemopoda minuta Wd., Piophila ca.sei L., Prochyliza 
xanthostoma Wk., Sepsis violacea Mg., Themira putris Lw. ; 
Simuliidae: Simulium pecuarum Rl. ; Stratiomyidae: Allognosta 
fuscitarsis Say, obscuriventris Lw., Microchry.sa polita L., 
Xemotelus glaber Lw., Odontomyia cincta 01., nigrirostris Lw., 
pubescens Day, Sargus viridis Say, Stratiomyia apicula Lw., di.s- 
calis Lw., meigenii Wd., quaternaria Lw., unilirabata Lw. ; 



16 FLOWERS AND INSECTS— XXVI 

Syrphidae: Allograpta obliqua Say, Baccha aurinota Wk, (fasci- ! 

pennis Wd.), clavata F., fuscipennis Say, tarchetius Wk., j 
Brachyopa vacua 0. S., Brachypalpus frontosus Lw. (oarus Wk.), 

rileyi Wl. (metallifera Bigot), Ceria abbreviata Lw., Chalcomyia i 

aerea Lw., Chilosia capillata Lw. (caltha Shannon), cyanescens j 

Lw., pallipes Lw., petulca WL, puctulata Hunter, Chrysochlamys ■ 

dives 0. S., Chrysogaster nigripes Lw., Ontario Curran, Criorhina ! 

decora Mc, intersistens Wk., umbratilis WL, Didea fasciata j 

fuscipes Lw.j Eristalis aeneus Scopoli, bastardi Mc, brousi WL \ 

(meigenii Wd.), dimidiatus Wd., flavipes Wk., latifrons Lw., tenax ' 

L., transversus Wd., vinetorum F., Helophilus divisus Lw., laetus/ ) 

Lw., latifrons Lw., similis Mc, Mallota cimbiciformis FL, illinoensis i 

Rb., type, posticata Fy^elanostoma mellinum L., obscurum Say, i 

Merapioidus villosus Bigot, Mesogramma geminata Say, marginata ; 

Say, polita Say, Milesia ornata F. (virginiensis Dr.), Myiolepta j 

nigra Lw., strigilata Lw., varipes Lw., Orthoneura nitida Wd., ' 
pictipennis Lw., Paragus bicolor F., tibialis ¥1./ Pipiza femoralis 

Lw., f estiva Mg. (albipilosa WL), nigribarba Lw. (apisaon Wk.), . 

pistica WL, pubescens Lw., pulchella Wl. (Pipizella banksi Cur- ■ 

ran) , Platycbirus hyperboreus Staeger, quadratus Say/ Psilota ! 

buccata Mc, Pterallastes thoracicus Lw., Rhingia nasica Say, ^ 

Sericomyia chrysotoxoides Mc, Sphaerophoria cylindrica Say, ) 

Sphegina campanulata Rb., type, rufiventris Lw., Spilomyia bami- ; 

fera Lw., longicornis Lw., 4-fasciata Say, Syritta pipiens L., ' 

Syrphus amerieanus Wd., arcuatus FL, ribesii F., torvus 0. S., ; 

Temnostoma trifasciata Rb., type, Teucbocnemis lituratus Lw., ; 

Tropidia albistylum Mc, mamillata Lw., quadrata Say, Volucella ■ 

evecta Wk., fasciata Mc, vesiculosa F., Xanthogramma emarginata 1 

Say, felix 0. S., flavipes Lw., Xylota angustiventris Lw., bicolor ! 

Lw., chalybea Wd., fraudulosa Lw. (baton Wk.) -/Tahanidae: ■■ 

Chrysops indus 0. S., striatus 0. S., Tabanus lineola F., Therio- j 

plectes illotus 0. S. ; Tachinidae: Actia pilipennis FL, Alophora j 

aeneoventris WL, fumosa Cq., grandis Cq., cotype, pulverea Cq., j 

Amobia distincta 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 Shinier, Ceratomyiella conica Tn., type, i 
Chaetogaedia analis Wulp (aeroglossoides Tn., type), crebra Wulp, 

Chaetophleps setosa Cq., Chaetoplagia atripennis Cq., Cistogaster I 

occidua Wk., pallasii Tn. Clytiomyia flava Tn., type. Crypto- ] 

meigenia theutis Wk., Cyphocera fucata Wulp, Distichona auriceps I 

Cq., varia Wulp, Ennyomma clistoides Tn., type, globosa Tn., ■ 



ClIARLK.i UUliEUTtSOS 17 

nigrifrons Tn., type, Epalpus signiferus Wk., Epigrimyia floriden- 
sis Tn., geniculata Tn., type, illinoensis Kb., type, polita Tn., 
Euacomyia tibialis Cq., Eumyotlieria illinoensis Tn., type, 
Euphorocera cinerea Wulp, claripennis Mc. (edwardsii Wl.), 
Euryceromyia robertsonii Tn., type, Euthera tcntatrix Lw., Ex- 
orista confinis Fl., nigripalpis Tn., pyste Wk., Frontina aletiae Rl., 
archippivora Wk., frenchii Wl., Gonia capitata Dg., exul Wl., 
Gymnochaeta alcedo Lw., Gymnoprosopa clarifrons Tn., type, 
Gymnosoma fuliginosa Ds., Hilarella aristalis Cq., type, 
Hyalomyodes triangulifera Lw., Hyalurgus johnsoni Tn., Ilypostena 
barbata Cq., dunningii Cq., indecisa Tn., type, variabilis Cq., 
Leskia analis Q(\. (similis Tn.), Lo.skiomima prima Rb. MS, secunda 
Rb., MS, Leuco.stoma atra Tn., type, neomexicana Tn., nigricornis 
Tn., siphonina Rb. MS, Linnaemyia compta Fl., Macquartia pristis 
Wk. (halisodotae Tn.), Masipbya brasiliana B. B., Mctopia 
leucocephala Rossi, Noofischeria flava Tn., Ocyptera argentea Tn., 
nigra Al., dosiades Wk., lata Rb. MS (vulgaris Al.), tenuis Rb. 
MS (euchenor Wk.) Opsidia gonioides Cq., Pachyophtbalmus 
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, robert.sonii Tn., type, Phorichaota sequax 
Wl., Phyto clesides Wk. (anomala Tn.), Polidea areos Wk. (ameri- 
cana Tn., type), Senotainia rubriventris Mc, trilineata Wulp, 
Siphona geniculata Dg., Siphoplagia anomala Tn., flaccidirostris 
Rb. MS, Spallanzania hesperidarum Wl., Sturmia distineta Wd., 
fraudulenta Wulp, inquinata Wulp, nigrita Tn., type, pbyciodis 
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-pu.stu- 
lata F., Xanthomelana arcuata Say; Tipulidae: Geranomyia cana- 
densis Westwood; Trypctidae: Euaresta aequalis Lw., bella Lw., 
Plagiotoma obliqua Sa}', Trypeta culta Wd., finalis Lw., humilis 
Lw., Solaris Lw. 

Lepidopteeia. (99) 
Ayaristidar : Alypia octomaculata F. ; Arctiidae: Callimorpha 
fulvicosta Clemens (colona Hb.), Utetheisa bella L. ; Ctenuchidae: 
Scepsis fulvicollis Hb. ; Cramhidoe : Crambus laquoatellus Clemens. ; 
Hesperiidae: Achalarus lycidas S. & A., Ambly.scirtes samoset 
(hogon) Sc, Ancyloxypha numitor F., Atalopedes huron Ed. 
(campestris B.s.), 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 Sc, taumas F. (cernes B. 
L.), Pamphila dion Ed., hobomok Hr., Pholisora catullus F., hay- 
iiurstii Ed., Polites peckius Kirby, Tbanaos brizo B. L., icelus Lint- 
ner, juvenalis F., martialis Sc, persius Sc, Thorybes bathyllus 
(daunus Cm.), pylades Sc. ; Lycaenidae: Chrysophanus thoe B. L., 
Cyaniris pseudargiolus B. L., Eupsyche m-album B. L., Everes 
comyntas Godart, Heodes hypophlaeas Bs., Strymon titus F., 
Thecla ealanus Hb., sylvinus Bs. (acadica Ed.), Uranotes meliniis 
Hb. ; Noctuidae: Acontia candefaeta Hb., Agrotis ypsilon Rott. 
Carneades velleripennis Grote, Drasteria erecbtea Cm., erichto Gn. 
(crassiuscula Haw.), Feltia subgothica Stephens (ducens Wk.), 
Heliothis armiger Hb. (obsoleta F.), dipsaceus L. (phloxiphaga 
G. & R.), Leueania albilinea Hb., Plusia precationis Gn., simplex 
Gn. (falcifera Kirby), ScMnia 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., Cercyonis alope F., Charidryas nycteis 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 StoU; Pyraustidae: Loxostege similalis 
Gn., Nomophila noctuella Voll. ; Pyromorphidae : Harrisina ameri- 
cana Guerin ; Sesiidae: Carmenta pyralidiformis Wk., Sesia pictipes 

G. & R., 6-fasciata Ed. (bassiformis Wk.) ; Sphingidae: Chaero- 
campa tersa L., Deilephila lineata F., Plemaris 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 01., mimus Say, musculus Say, 
obsoletus Say (obtectus Say) ; Buprestidae: Acmaeodera culta 



CHARLES BOBERTSON 19 

Weber (tubulns F.), pulehella Ilr., Agrilns difficilis Gory, egenus 
Gory; Calandnjidac: KhodobiUMHis 13-punctatus 111.; Carahidac: 
Callida punctata Le., Lebia viridis Say; Cerambycidae: Acmaoops 
nigripennis Lc, direeta Nw., Batyle snturalis Say, C'allimoxys fusei- 
pennis Le., sangninicollis 01., Cyllene deconis 01., robiniae Fr., 
Euderces j)ieipe.s F.. Leptura exigua Nw., pubera Say, vittata Gr., 
Molorehns biniaculatiis Say, Strangalia fameliea Nw., Tetraopes 
tetraophthalmus Fr., Typoeeru.s badiiis Nw., lugubris Say, sinuatiis 
Nw,, velutinus 01.; Chrysomelidae: Anomoea latielavia Fr., Babia 
4-guttata 01., Cerotoma caminea F. (trif areata Fr.), Chrysomela 
similis Rogers, Cryptoeophalu.s in.sertiis Ilald., Diabrotica atripenni.s 
Say, 12-piinctata F., longieornis Say, vittata F., Disonycha limbi- 
collis (pennsylvanica) pallipes Crotch, Galeruca tuberculata Say, 
Glyptina spuria Le., Haltica earinata Gr., Lina lapponica L., 
Luperaltiea fuscula Le., j\Iantura floridana Crotch, Or.sodachna 
atra Ahren.s, Pachybraehys atomarius ML. Rhabdopterus picipes 01., 
Trirhabda tomentosa L. ; Clcridae: Enoplium 4-punctatum Say; 
Coccinellidae: Coccinella 9-notata Hr., sanguinea L., Ilippodamea 
glaeialis F., parenthesis Say, 15-maculata Mul. (convergens 
Guerin), 13-punctata L., Megilla maeulata Dg. (fuscilabris Mul.), 
Seymnus consobrinus Lc., terminatus Say; Curculionidae: Apion 
nigrum Hr., Centrinites strigicollis Ca.sey, Centrinus perscillus 
Gyll., picumnus Hr., scutellum-album Say, Idiostethus subcalvus 
Lc., tubulatus Say, Limnobaris prolixa Lc., Listronotus caudatus 
Say; Dermestidae: Anthrenus musaeorum L. (castaneae Ml.), 
scrophulariae L., Attagenus piceus 01., Cryptorhopalum haemor- 
rhoidale Lc., triste Lc., Orphilus glabratus F. (ater Er.) ; FAateri- 
dae: Agriotes insanus Candeze, Limonius griseus Bv. (propexus 
Candeze), Melanotus communis Gyll., Sericosomus silaceus Say; 
Eroiylidae: Languria mozardi Latr. ; Histeridae: Hister americanus 
Paykull, subrotundus Say; Lampyridae: Calopteron reticulatum F., 
Chauliognathus marginatus F., penn.sylvanicus Dg., Diteninus 
bidentatus Say, Ellychnia corrusca L., Photinus pyralis L., Poda- 
brus brunnicollis Lc, rugulosus Lc., tomentosus Say, Pyractomona 
angulata Say, Telephorus bilineatus Say, dentigor Lc, flavipes Lc, 
scitulus Say; Latridiidae: Corticaria distinguenda Comolli ; Mcla- 
chidae: Anthocomus erichsoni Lc, Attains scincetus Say, Collops 
4-maculatus F.. Melyris cribrata Lc. ; Melandryidac: Canifa pallipes 
Ml., Nothus varians Lc ; Mcloidac: Epicauta cineroa Fr., pennsyl- 
vanica Dg., trichrus Palla.s, vittata Fr., ]\Iacrobasis unicolor Kirby, 
Nemognatha vittigera Lc, Pyrota germari Haldeman, mylabrina 
Chevrolat, terminata Lc. ; Mord^lNda^: Mordella raarginata ^11., 
melAena Gr., 8-punctata F., .scutcllaris F., triloba Say, Mordellistena 



20 FLOWERS AND INSECTS— XXVI 

aspersa Ml., biplagiata Hel., comata Lc, grammica Lc, limbalis Ml., 
lutea ML, marginalis Say, ornata ML, pubescens F., tosta Lc, Pen- 
taria trifasciata ML; Nitidulidae: Carpopbilus brachypterus Say, 
Cereus abdominalis Erichson, Epurea labilis Erichson, truncatella 
Mannerheim ; Oedemeridae: Asclera puncticoUis Say, ruficollis Say, 
Oxacis thoracica F. ; Bhipiphoridae : Myodites fasciatus Say, Rhipi- 
phorus dimidiatus F., flavipennis Lc, limbatus F. ; Bhynchitidae : 
Eugnamptus angustatus Hr. ; Scarahaeidae: Euphoria fulgida F., 
sepulchralis F., Hoplia trifasciata Say, Macrodactylus angustatus 
Bv., Onthophagus pennsylvanicus Harold, Trichius affinis Gory, 
piger F., Valgus canaliculatus F, 

Hemiptera. (25) 
Acanthiidae: Tripbleps insidiosus Say; Berytidae: Corizus 
lateralis Say, Harmostes reflexulus Say; Capsidae: Calocoris rapi- 
dus Say, Lopidea media Say, Lygus pratensis L., Phytocoris 
serupeus Say, Plagiognathus obscurus Uhler; Coreidae: Alydus 
eurinus Say, pilosulus H.S., Chariesterus antennator F. ; Corime- 
laenidae: Corimelaena lateralis F., pulicaria Gr. ; Cydnidae: 
Canthophorus cinctus Bv. ; Lygaeidae: Lygaeus turcicus F., Melano- 
coryphus bicrucis Say, Oncopeltus fasciatus Dallas, Ortholomus 
longiceps Stal; Nabidae: Coriscus ferus L. ; Pentatomidae: Eusehis- 
tus fissilis Uhler (euschistoides Vol.), ictericus L., variolarius Bv., 
Podisus spinosus Dallas; Phymatidae: Phymata wolffii Stal, pred.; 
Beduviidae: Sinea diadema F. 

Neuroptera 
Chrysopidae: Cbrysopa 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) — Ap.: Apis ab; Bomb.: Bombias sepa- 
ratus $, fq, Bombus americanorum 5, impatiens ^; Ceratin.: Cera- 
tina (^ $, ab; Megachil.: Osmiini ($) : Alcidamea simplex sc, fq, 
HopUtis sc, Osmia distincta ; Megachilini : Cyphopyga J*, Megachile 
addenda 5, sc, brevis J*, generosa J*, Sayapis pugnata ^ ; Coelioxy- 
ini : Coelioxys 8-dentata J* $, sayi J' $, f q ; Nomad. : Centrias ameri- 
canus $; Epeol.: Epeolus bifasciatus (^, Triepeolus concolor J* $; 
Eucer.: Florilegus J*, ab, Melissodes bimaeulata J* ?, ab, variabilis 
(^, Tetralonia dilecta $, rosae <^ $; Anthophor.: Anthemoessa 



CHARLES liOBEiaSON 21 

Short-tongrued Bees (11) — Halict.: Aprapostemon radiatus ^ $, 
viridulus 9, Chloralietus pilosus $, c, sparsus $, sc, versatus $, sc, ab, 
Halictus lorouxii ^ 9, ab, Odontalictus (^ $, Oxystoglossa confusa 
$, sc, ab, similis $, Seladonia c^ $; Panurfj.: Calliopsis andreniformis 
c^ $, ab. 

'Other Ilyraenoptera (3) — Sphcc: Splicx nigricans; Bemhic: 
Berabix spinolae; Scoli.: Campsomeris. 

Diptera (12) — Syrph.: Allograpta f, n, Eristalis tenax sf, Helo- 
philus laetiis f, n, Mesogramma marginata f, n, Sphaerophoria f, n, 
Syritta, Tropidia quadrata; Bomhyli.: Antlirax parvicornis, Bom- 
bylius azaleae, atriceps fq; Conop.: Physocephala tibialis, Zodion 
fiilvifrons. 

Lepidoptera (8) — Nymphal.: Charidryas; Lycaen.: Cyaniris; 
Papilion.: Pieris; Ilespcri.: Epargyrous, 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 $ ^, 
impatiens $; Megachil.: Megachile brevis $, c, also cutting petals, 
Xanthosarus $, sc; Eucer.: Tetralonia dilecta (^ $; Anthophor.: 
Amegilla cf. 

Short-tonguedBees (1) — Halict.: Agapostemon viridulus $, c,n. 

Other Hymenoptera (1) — Eumcn.: Leionotus dorsalis, perfor- 
ating. 

Diptera (2, f, n) — Syrph.: Allograpta; Bomhyli.: Anthrax 
sinuosa. 

Ruellia strepens. — Blooms May 22-September 13 ; 1 visitor ob- 
served, June 16 ; Ma, K. 

Long-tongued Bees (1) — Eucer.: Tetralonia dilecta $. 

AcERACEAE (auemophilous) 
Acer negundo. — One visitor observed, April 18, 24. 
Long-tongued Bees (1) — Ap.: Apis c, ab. 

Acer saccharinum, — One visitor observed, April 10. 
Long-tongued Bees (1) — Ap.: Apis c, 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; Tcnthrcdin.: 
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; Muse: Lucilia 
caesar 4, Muscina 2, Pseudopyrellia 4; Anthomy.: Hydrotaea 3, 
Hyetodosia 25; Agromyz.: Aulacigaster 2; Scatophag.: Scatophaga 
12; (S^eps.; Prochyliza 10. 

Lepidoptera (3) — Nymphal.: Euvanessa 4, Polygonia comma 2, 
Vanessa atalanta 2. 

AlZOACEAE 

Mollugo verticillata (int, 5: 274). — Blooms June 25-October 
12 ; 13 species and 29 individuals observed, July 16, August 11, 21 ; 
Mi, W. 

Short-tongued Bees (5:13) — Halict.: Chloralictus pilosus J*, 1, 
sparsus 5, sc, 4, tegularis ^ $, 3, versatus J* 5^ sc, 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; Muse: Pseudopyrellia 1. 

Coleoptera (1: 2) — Malach.: Collops 2. 

Alismaceae 

Alisma plantago aquatica. — Blooms July 4- August 13; 13 
species and 101 individuals observed, July 20, 21, 1909 ; Mi, W. 

Short-tongued Bees (6:52) — Halict.: Agapostemon radiatus (^, 
1, Chloralictus coreopsis $, 1, cressonii (^, 3, sparsus ?, 8, tegularis 
$, 31, Oxystoglossa similis $, 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, $) — Ceratin.: Ceratina 5, 1; Mega- 
chil.: Megachile brevis $, sc, 1. 

Short-tongued Bees (5: 18, $, sc) — Halict.: Chloralictus sparsus 
5, versatus 7, Bvylaeus nelumbonis 1, Odontalictus 4, Oxystoglossa 
confusa 1. 

Other Hymenoptera (4:4) — Eumen.: 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, Khingia 1; Empid.: Parempis 1; Bomhyli.: Spar- 
nopolius 2; Tachin.: Epigrimyia genieulata 1; Muse.: Lucilia seri- 
cata 1; Anthomy.: Liuinophora .'J. 

Lepidoptora (3:3) — Papilion.: C'haridryas 1; Lycacn.: Chryso- 
l)hanus 1 ; Ilcsperi.: Linioeliores taunias 1. 

Coleoptera (2:3) — Chrysomd.: Diabrotica 12-punctata 1; Coc- 
cinell.: Megilla f, in cop, 2. 

On staminatc and pistillate flowers (17: 66) : — 

Long-tongued Bees (2:13) — Ap.: Apis 3; Dumb.: IJoiabus 
anierieanorum $, sc, 10. 

Short-tongued Bees (4: 18) — Halict.: Agapostemon viridulus cf, 
5, Chloralictus pilosus $, sc, 3, Evylaeus pectoralis J* $, sc, 8, Oxysto- 
glossa similis $, sc, 2. 

Other Ilymenoptera (3:12) — Scoli.: Elis interrui)ta 2, 5-cincta 
7; Eumen.: Leionotus arvensis 3. 

Diptera (4:10) — Syrph.: Syritta 2; Tachin.: Archytas analis 
3, Cyphoeera 2; Muse: Lucilia sylvarum 3. 

Lepidoptera (3:9) — Nymphal.: Phyciodes 3; Hcsperi.: 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 $, 1, 
viridula $, 1. 

Other IIyr/i?noptera (3:4) — Sphec: Priononyx atrata 1; 
Philanth.: Cerceris compacta 1 -yiVesp.: Polistes pallipes 2. 

Diptera (5:7) — Tachin.: Spallanzania 1, Trichophora 3; Sar- 
cophag.: Ilelicobia helicis 1, Sarcophaga sinuata 1; Muse: Lucilia 
caesar 1. 

Lepidoptera (1: 1) — Papilion.: Eurymus 1. 

Amaranth ACEAE (anemophilous) 
Amaranthus spinosus (int). — One visitor observed, July 19. 
Long-tongued Bees (1) — Ap.: Apis sc, fq. 

Amaryllidaceae 

Hypoxis hirsuta (5: 69). — Blooms April 23-.Juiie 12; 16 visitors 
observed, May 10-19; Mi, Y. 

Long-tongued Bees (4, $, c) — Ceratin.: Ceratina ab ; Mcgachil.: 
Osmia atriventris, illinoensis fq, di.stincta. 

Short-tongued Bees (9, $, c) — Halict.: Chloralictus cre.ssonii, 
sparsu.s, tegulari.s, versatus, Curtisajjls coriacoa, Dialietus anomalus 
type, Evylaeus pectoralis, Odontalictu.s, Oxystoglossa similis ab. 



24 FLOWERS AND INSECTS— XXVI 

Diptera (2, f) — /S^t/rp/i. : Mesogramma marginata, Sphaerophoria. 
Coleoptera (1, f) — 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 cf ; Nomad.: 
Gnathias cuneatus J* $, fq. 

Short-tongued Bees (21) — Halict. (?) : Agapostemon texaniis, 
Chloralictus cressonii, foveolatus, sparsus, zephyrus fq, Curtisapis 
forbesii f q, Evylaeus f oxii f q, Odontalictus, Oxystoglossa confusa ; 
Collet.: Colletes inaequalis cf ; Andren.: Andrena carlini J* ?, fq, 
erythrogastra 5, mandibularis (^ ?, fq, salictaria $, tridens ^, 
Opandrena cressonii J*, miserabilis (^ 5, fq, Traehandrena claytoniae 
(^ $, ab, forbesii cf $, fq, mariae c^, fq, rugosa (^ $, 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; Muse: 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 floivers: — 

Long-tongued Bees (8) — Ap.: Apis ab; Bomh.: Bombias separa- 
tus ^; Megachil.: Trypetini • Neotrypetes truncatus J*; Megachilini : 
Megachile generosa J*, mendica J* ; Coelioxyini : Coelioxys 8-dentata 
(^ 2, sayi c? ; Eucer. : Melissodes bimaeulata J*. 

Short-tongued Bees (15) — Halict.: Agapostemon radiatus ^ % 
Augochlora fervida J*, Chloralictus pilosus J* $, sparsus $, ab, 
versatus ^ ?, ab, zephyrus $, fq, Halictus lerouxii <^ $, ab, parallelus 
(^ ?j Oxystoglossa confusa $, similis J*, Seladonia J* ?> ^b; 
Sphecodini : Drepanium J, Sphecodes arvensis c^ $, f q ; Prosopid. : 
Prosopis illinoensis $, pygmaea (^ 5- 

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; Eumen.: Leionotus 
arvensis fq, dorsalis, foraminatus fq, 4-sectus; Crahron.: Ana- 
crabro, Lindenius errans, Solenius; Oxylel.: Notoglossa americana, 
frontalis, Oxybelus packardii ; Larr.: Tachytes distinctus; Pompil.: 
Arachnoproctonus, Poecilopompilus navus; Chalcid.: Leucospis. 



CHARLES ROBERTSON 25 

Diptera (22) — Stratiomy.: Stratiomyia meigenii; Syrph.: 
Allofjrapta, Mesogramina marginata, Syritta f q ; Conop.: Conops 
braehyrrynchiis, Oncomyia, Physocephala tibialis, Zodion nanelliim; 
Tachin.: Archytas analis f(i, Linnaomyia fq, Oeyptera lata, Phor- 
antha purpurascens, Senotainia trilineata fq, Trichopoda pennipes, 
Trichophora; Sarcophag.: Ilelieobia helicis, Sarcophaga cimbicis; 
Muse: Compsomyia fq, Lucilia sylvarum, Musea, Pseudopyrellia 
fq; Anthomy.: Calythea. 

Rhus glabra (7: 111-12).— Blooms May 27-July 7; 114 vis- 
itors observed, June 5-July 7; Mis, Y. 

07^ staminote flowers (57) : — 

Long-tongued Bees (4) — Bomb.: Bombias separatus $, sc; 
SteliiL: Microstelis $; Mcgachil.: Trypetini: Neotrypetes truncatus 
(^ $, sc, fq ; Coelioxyini : Coelioxys sayi $. 

Short-tongued Bees (11) — Halict.: Curtisapis fuseipennis $, sc, 
Evylaeus areuatus q $, sc, ab, Ox>'stoglossa confusa $, sc; Sphe- 
codini: Sphecodes arvensis $; Prosopid.: Prosopis illinocnsis $, 
ziziae c^ $, sf ; Collet.: Colletes aestivalis J* $, nudus (^; Andren.: 
Andrena platyparia $, sc, Opandrena cressonii $, sc, Trachandrena 
nuda <^. 

Other Ilymenoptera (10) — Bemhic: Bicyrtcs ventralis; 
Philanth.: Cerceris compar, fumipennis, insolita, Philanthus punc- 
tatus; Eumen.: Ancistrocerus campestris, Leionotus arvensis, 
Monobia, Zethus; Crahron.: Solenius. 

Diptera (29) — Stratiomy.: Stratiomyia apicula, meigenii, 
quaternaria; Syrph.: Baccha fuseipennis, Ceria, Eristalis dimidi- 
atus, flavipes, tenax, transversus, Mallota cimbiciformis, posticata, 
^lesogramma geminata, Orthoneura nitida, Sphaerophoria, Sphe- 
gina rufiventris, Syrphus americanus, ribesii ; Empid.: Parompis 
fq, Bomhyli.: Anthrax alternata, sinuosa f, Bombylius atriceps; 
Conop.: Conops brachyrrhynchus, Zodion fulvifrons, nancllum; 
Tachin.: Ilypostena variabilis, Siphona; Muse: Lucilia caesar, 
^lorellia; Anthomy.: Limnophora. 

Lepidoptera (3) — Nymphal.: Neonympha ; Lycacn.: Cyaniris, 
Thecla calanus. 

On staminate and pistillate flowers (18) : — 

Long-tongued Bees (1) — Ceratin.: Ceratina $, sc. 

Short-tongued bees (10) — Halict.: Agapostemon radiatus $, 
sc, viridulus $, sc, Chloralictus pilosus $, sc, pruinosus (^ 9. sc. 
sparsus 5, sc, ab, versatus (^ $, sc, ab, zephyrus ^T 9. sc, ab, Ilalictus 
lerouxii (^ 9. «c, fq; Collet.: Colletes eulophi cT $. a*>; Andren.: 
Opandrena serotina (^ 9. sc, fq. 



26 FLOWERS AND INSECTS— XXVI 

Other Hymenoptera (3) — Sphec: Sphex vulgaris; Philanth.: 
Cerceris robertsonii fq; Oxyhel.: 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; Bomh.: Bombias auri- 
comus 5 ; Ceratin. : Zaodontomerus (^. 

Short-tongued Bees (7, $) — Halict.: Chloralictus tegularis, 
Halietus parallelus, Oxystoglossa similis, Seladonia; Prosopid.: 
Pro^opis 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; Eumen.: Leionotus anormis fq; Oxyhel.: 
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 eimbicis, hunteri, sinuata; Muse: Lucilia 
sylvarum, Pseudopyrellia, Stomoxys; Anthomy.: Phorbia acra, 
platura. 

Coleoptera (1) — Mordell.: Mordella melaena. 

June 17, 1913, the following 17 species and 51 individuals were 
taken on pistillate flowers of Rhus glabra: 

Long-tongued Bees (3:19) — Bomh.: 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 $, sc. 

Anonaceae 
Asimina triloba (16: 154r-5). — Blooms April 10-May 27; 8 visi- 
tors observed, May 5 ; Mi, R. 



CHARLES ROBERTSON 27 

Diptera (8) — Syrph.: Syrphus americaruis ; Sarcophag.: Cyno- 
myia fq, Ilelicobia helicis, 4-seto.sa, Sarcophaga sinuata; Muse: 
Phormia rt'^ina; Antliamif.: Phorbia platura; Scatophag.: Scato- 
pliaf,'a. 

Al'OCYXACEAE 

Apocynum androsaemifolium. — Blooms May lO—Iuly 28; 12 
visitors observed, .Inly 16, 25; Mis, W. 

Long-tongued Bees (1) — Nomad.: Ceutrias amerieanus $, mp. 

Short-tongued Bees (5, no pel.) — Halict.: Chloralictus versatus 
$, zephyrus $, Oxystoglossa confusa cT* similis <^ $; Prosopid.: 
Prosopis sayi $. 

Other Ilymenoptera (1) — Sphec: Si)hex vulgaris, no i)ol. 

Diptera (5, n) — Tachin.: Linnaemyia, Tricliophora; Muse: 
Graphoniyia. Lucilia sylvarum ; Anthomy.: Phorbia acra. 

Apocynum cannabinum (4:70). — Blooms May 18-August 12; 
48 visitors observed, June l-^July 17; Mis, W. 

With pollinia ('J) :— 

Long-tongued Bees (3) — Ap.: Apis Ip; Nomad.: Centrias ameri- 
eanus cT ?» ftl. mp. Ip; Ilolonomada affabilis cT, Ip. 

Short-tongued Bees (3, mp) — Halict. ($) : Agapostemon radia- 
tus, Oxystoglossa confusa; Collet.: Colletes productus cT, type. 

Other Ilymenoptera (3) — Sphec: Isodontia apicalis t; Bemhic: 
Bicyrtes ventralis mp; Eumen.: Leionotus foraminatus t. 

Without pollinia (39) :— 

Long-tongued Bees (3) — Stelid.: Mierostelis $; Megadiil.: 
Megachiliui: Chelostomoides $; Coelioxvini : Coelioxys 8-dentata 

^^ 

tShort-tongued Bees (6) — Halict.: Augochlora viridula % 
Chloralictus versatus ^ $, Seladonia $; Prosopid.: Prosopis ziziae 
$; Collet.: Colletes aestivalis (^ ; Macropid.: ^Licropis ^T, fq. 

Other Ilymenoptera (4) — Sphec: Priononyx atrata, thomae, 
Sphex vulgaris; Larr.: Astatus unieolor. 

Diptera (21, n) — Mycetophil.: Sciara atrata; Syrph.: Allo- 
grapta, Eristalis dimidiatus, Ilelopliilus laetus, Sphaerophoria, 
Tropidia mamillata, quadrata; Empid.: Parempis; Bombyli.: 
Anthrax alternata, Bombylius atriceps; Tachin.: ArchytAs analis,. 
Cistoga.ster occidua, Linnaemyia, Ocyptera tenuis, Spallanzania, 
Trichophora; Sarcophag.: Ilelicobia helicis; Muse: Compsomyia, 
Piiormia regina; Anthomy.: Limnophora, Phorbia acra. 

Lepidoptera (2, n) — Nymphal.: Argynnis; Lycaen.: Thecla 
calanus. 



28 FLOWERS AND INSECTS— XXVI 

Coleoptera (1) — Scarahae.: Trichius piger n. 
Hemiptera (2, n) — Caps.: Lygus; Lygae.: Lygaeus. 

y' 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) — ^iVa&.: 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) — 3Ielandry.: Canifa. 

Asclepiadaceae 

According to the situation of the poUinia the insects carrying 
them are marked : c = claws, emp = empodium, f = face, g = glossa, 
h = tarsal hairs, 1 = labrum, Ip = 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 poUinia (10) : — 

Long-tongued Bees (6:21) — Ap.: Apis vs; Bomi.: Bombias 
scutellaris ^, vs, ab, separatus J* $ ^, 1, t, vs, ab; Megachil.: 
Megachile generosa 5, vs, mendica $, vs. 

Other Hymenoptera (4) — Sphec. : Priononyx atrata vs ; BemMc: 
Bembix nubillipennis 1, ab ; Philanth.: Cerceris bicornuta vs, f, t; 
Pompil.: Priocnemoides unifasciatus vs, t. 

Coleoptera (1) — Scarahae.: Trichius piger vs. 

Without poUinia (8) : — 

Long-tongued Bees (1) — Megachil.: Megachile brevis $. 

Other Hymenoptera (5) — 8coU.: Elis 5-cincta; Philanth.: Cer- 
ceris compar; Vesp.: Polistes variatus; Eumen.: 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) — Bonib.: Bombias scutellaris ^, sepa- 
ratus ^, f q ; Eucer. : Anthedon <^. 



CHARLES ROBERTSON 29 

Other Hymenoptera (2) — Larr.: Tacliytes 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 aurieomus c? $ $, h, e, fq, seutellaris (^ $, h, e, t, fq, sepa- 
ratus cT $ 5, h, e, Bombus amerieanorura c^ $ $, h, c, t, consimilia 
(^, h, e, t, inipatiens $ ^, li, c, t, Psithyrus laboriosus cT, h, c, Ip; 
Eucer.: Epimolissodes atripes $, h, Melissodes comptoides <^, h, 
trinodis $, h; EmpJior.: Melitoma J*, h, 

Short-tongued Bees (6) — Halict.: Augochlora forvida (^ $, h, fq, 
Curtisapis eoriacea c?, h, t, Halictus lerouxii <^, p, Oxystoglossa 
similis J*, t, Seladonia $, h ; Collet.: Colletes latitarsis $, h, c, t, dead. 

Other Hymenoptera (42) — Sphec: Amraobia ichneumonea h, 
nuda h. pennsylvanica h, e, t, fq, Isodontia apiealis h, maerocephala 
h, Priononyx atrata h, fq, thomae h, fq, Sceliphron h, one dead ; 
Bemhic. (h) : Bembix nubillipennis fq, spinolae, Megastizus, Sphe- 
cius fq, Stictia; Scoli.: Elis interrupta h, t, obscura h, 5-cincta h, 
e, t. fq, Seolia bicincta h; Philanth.: Cerceris bieornuta h, c, t, fq, 
clypeata h, c, compacta h, c, finitima t, fumipennis p; Vesp.: Polistes 
pallipes h, c, rubiginosus h, c, variatus h, c, Vespula cuneata h, c, 
t, fq, germanica h, maculata h, vidua h, c, t; Eumen.: Leionotus 
arvensis h, c, t, ab; Crabron.: Protothyreopus rufifemur c; Oxyhel.: 
Oxybelus packardii c, t; Larr.: Tachytes aurulentus h, distinctus h, 
mandibularis h, t, fq, peptieus h; Nysson.: Pseudoplisus phaleratus 
h; Pampil. (h) : Ageniella aceepta, Araehnoproctonus, Episyron, 
Lophopompilus atrox, Prioenemoides unifasciatus. 

Diptera (8) — Stratiomy.: Stratiomyia meigenii c; Mida.: Midas 
clavatus h, t, tibialis p; Conop.: Conops xanthopareus p, fq, Physo- 
cephala tibialis h; Tachin.: Cistogaster oceidua t, n, Panzeria c, 
Trichopoda lanipes h. 

Lepidoptera (15) — Nymphal.: Anosia h, Argynnis h, Basilarchia 
archippus h, Hypatus h, Speyeria h, Vanessa atalanta h, c; 
Papilion.: Euphoeades h, Eurymus h, Heraclidcs h, Jasoniades h, c, 
Laertias h, Papilio h, e, Pieris h, c; Hesperi.: Achalarus h, Limo- 
chores taumas h. 

Coleoptera (3) — Lampyr.: Chauliognathus pennsylvanicus h, c, 
t, ab; Scarabae.: Euphoria sepulehralis, h, e, t, ab, Trichius piger h. 

Ilemiptera (2) — Lygae.: Lygaeus h, Oncopeltus h. 

Without pollinia (24) :— 

Birds {l)—TrochU.: Trochilus n. 



30 F'MWERS AND INSECTS— XXVI 

Long-tongued Bees (1) — Megachil: Megachile brevis J* $. 

Short-tongued Bees (1) — Halict.: Chloralictus versatus <^, n. 

Other Hymenoptera (3) — Eumen.: Eumenes fraternus; Oxyhel.: 
Notoglossa americana; Pompil.: Priocnemoides fulvieornis. 

Diptera (9) — Bomhyli.: 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; Hesperi.: Epargyreus, 
Euphyes verna, Pholisora catullus, Polites ; Ctenuch. : Scepsis. 

Coleoptera (3, n) — Buprest.: Aemaeodera pulcbella; Ceramhyc. 
Tetraopes gn; Melo.: Epieauta vittata gn, fq. 

Asclepias purpurascens (1:213; 13:576).— Blooms May 27- 
July 15 ; 36 visitors observed, June 2-28 ; Mas, R. 

With pollinia (14) : — 

Long-tongued Bees (5) — Ap.: Apis h; Megachil.: Megachile 
addenda 5, h, mendica c^, h; Eucer.: Tetralonia rosae $, h; Antho- 
phor.: Anthemoessa (^ 5; ^j V, ^^.^ 

Diptera (2) — Conop.: Physocephala tibialis h; Tachin.: Spallan- 
zania p. 

Lepidoptera (5, h) — Nymphal: Argynnis fq, Euphydryas, 
Speyeria, Vanessa atalanta, huntera; Hesperi.: Thorybes pylades. 

Hemiptera (1) — Lygae.: Oncopeltus h. 

Without pollinia (28) : — 

Birds (1) — Trochil.: Trochilus n. 

Long-tongued Bees (3, $) — Bomb.: Bombias separatus, Bombus 
americanorum, consimilis; Anthophor.: Anthophora. 

Short-tongued Bees (4, $, 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, Eurymus, 
Heraclides, Jasoniades, Laertias; Hesperi.: Euphyes verna, Limo- 
chores manataaqua, taumas, Pamphila hobomok, Polites. 

Coleoptera (1) — Ceramhyc: 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 5, 1. 

Lepidoptera (2:9) — Nymphal.: Argynnis 6, Vanessa hunt- 
era 3. 



CHARLES ROBERTSON 31 

Without pollinia (20: 44) :— 

Birds (1:1)— Trochil: Trochilus 1. 

Lonp-tongued Bees (3:9, $) — Bomb.: Bombias soparatus 1; 
Anthophor.: Anthemoessa 7, Anthophora 1. 

Short-ton{;ued Bees (4:7, $) — Halict.: Aupochlora fervida 2; 
Chloralietus versatus 1, Evylaeus i)eetoraIis 3, Oxystojjlossa 
similis 1. 

Lepidoptera (9:23) — Nifrnphal: Arjrynnis 1; Papilion.: 
Euphoeades 3, Ileraclides 1, Jasoniades 5, Laertias 3; Hcspcri.: 
Euphyes verna 1, Limocliores taumas 2, Polites 2, Thorybes 
pylades 5. 

Diptera (2:3) — Tachin.: Trichopliora 2, Spallanzania 1. 

Hemiptera (1:1) — Lygae.: Oncopeltus 1. 

Asclepias sullivantii (1:210-12; 13: 574-5).— Blooms June 
lO-August 23 ; 90 visitors observed, June 19-August 20 ; Mas, R. 

With pollinia (25) :— 

Long-ton{?ued Bees (11) — Bomb.: Bombias auricomus <^ ^, c, p, 
sp, scutellaris $ $, c, separatus $ $, e, fq, Bombus americanorum % 
h, c, Psithyrus variabilis $, c, sp, h; Megachil: Megrachile petulans 
(j", c, Xanthosarus J* $, c; Epcol.: Argyroselenis $, p, n, Epeolus 
bifasciatus J*, p, n; Eucer.: Florilegus (^, p, Melissodes coreopsis 

$,P. 

Other Hymenoptera (4) — Sphec: Priononyx thomae h, Sceli- 
phron c; Bcmbic: Bembix nubillipennis c; Ichneumon.: Ichneumon 
flavizonatus, on antenna, n. 

Diptera (3) — Stratiomy.: Stratiomyia meigenii c, emp ; Conop.: 
Physocephala tibialis p, Zodion obliquefasciatum p. 

Lepidoptera (7) — Nxjmphal.: Anosia c, h, sp, Argynnis c; 
Lycaen.: Strymon h, n; Papilion.: Eurymus c, Papilio c; Ilc.^peri.: 
Epargyreus e, Limochores manataaqua c. 

Without pollinia, (46) : — 

Birds (I)— Trochil.: Trochilus. 

Long-tongued Bees (4) — Ccratin.: Ceratina $; Merjachil.: 
Megachilini: Megachile generosa ^ $, ab, mendica ^ \ Coelioxyini : 
Coelioxys 8-dentata (^ $, fq. 

Short-tongued Bees (9)— Halict.: Augochlora viridula $, Chlora- 
lietus pilosus $, sparsus $, tegularis (j*, versatus <^ $, Oxystoglossa 
pura (^ 9. confusa ^^ $; Sphecodini : Drepaniura (^ 9, fq, Sphecodes 
arvensis $. 

Other Hymenoptera (12) — Ffphrc: Priononyx atrata; Brmbic: 
Bembix spinolae, Microbembex f»| ; Scoli.: Elis 5-cincta ; Cercer.: 
Cerceris clypeata, finitima; Philanth.: Philanthus punctatus; 



32 FLOWERS AND INSECTS— XXVI 

Eumen.: Leionotus arvensis; Crahron.: Protothyreopus rufifemur; 
Oxybel.: Notoglossa americana; Lat-r.: 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 
belicis. 

Lepidoptera (10) — Nymphal.: Phyciodes, Vanessa atalanta; 
Lycaen.: Chrysophanus, Everes, Uranotes; Hesperi: Eupbyes 
metacomet, Limochores taumas, Thorybes pylades; Sphing.: 
Hemaris axillaris ; Sesi. : Sesia 6-f asciata. 

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 $, 1 J*; Megachil: 
Anthemois cf $, c, p, Megachile addenda J* $, brevis (^ $, c, Sayapis 
pugnata (^ ; Eucer. : Peponapis J*. 

Short-tongued Bees (3, c^) — Halict.: Halictus lerouxii c, p, 
Odontalietus, Seladonia. 

Other Hymenoptera (3) — Sphec: Isodontia apicalis h, c, Sphex 
pictipennis c; Larr.: Astatus bieolor. 

Diptera (4) — Syrph.: Eristalis aeneus c, Syritta; Bomiyli.: 
Sparnopolius ; Muse. : Pseudopyrellia. 

Lepidoptera (2) — Hesperi.: Polites p; Ctenuch.: Scepsis. 

Coleoptera (1) — Scarahae.: Trichius piger c. 

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) — Bornb.: Bombus americanorum 3; 
Megachil.: Xanthosarus 2. 

Diptera (1: 1) — Conop.: Physocephala tibialis 1. 

Lepidoptera (3: 3) — Nymphal.: Argynnis 1; Hesperi.: Epargy- 
reus 1, Limochores manataaqua 1. 

Without pollinia (20: 131) :— 

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.: Arf?ynnis '2. Phyciodes 1; 
Lycaen.: Uranotes 1; Hesperi.: Epargyreus 1, Euphyes metacomet 
1, Limochores manataaqua 8, Tliuryhcs pylades 1 ; Sphing.: llemaris 
axillaris 1. 

Asclepias syriaca (1: 209-10; 13: 572-4).— Blooms June 1- 
Au^st 15; 99 visitors observed, June 7- August 7; Mas, R. 

With poUinia (60) :— 

Long-tongued Bees (15) — Bomb.: Bombias separatus $ 5» ^5 
Megachil.: Megachilini : Mcgaehile generosa J*, t, i)etulans 9, t; 
Coeliox>ini: Coelioxys 8-dentata c^ $, c, n; Epcol.: Epoolus bi- 
fasciatus J*, p, n, Triepeolus remigatus (^, p; Euccr.: Florilegus 
cT $» P) g. Melissodes agilis (^, p, eomjitoides <^, p, petalostemonis $, 
p, Peponapis ^ $, h, p, t, fq, Tetralonia dilecta $, p, rosae $, h, 
Xenoglossa $, p; Anthophor.: Anthomoessa (^, p. 

Short -tongued Bees (G) — Halict. (n) : Agapostemon radiatus (^, 
p, Halictus lerouxii (^, p, Seladonia $, c; Spheeodini: Proteraner 
^, p; Collet.: CoUetes latitarsis (^, p, Ip, nudus $, p. 

Other Hymenoptera (12) — Sphec: Ammobia ichneumonea h, 
Priononyx atrata p, fq, thomac h; Bcmhic.: Bembix nubillipennis 
h, Stictia p; Scoli.: Campsomeris h, e, Elis obseura p, 5-eincta h, 
Scolia bieineta h; Philanth.: Cereeris bieornuta h; Eumen.: 
Leionotus ancnsis h; Larr.: Taehjies mandibularis h. 

Diptera (14) — Syrph.: Eristalis dirhidiatus p, t, Mallota eimbici- 
formis p, t, illinoensis p, Syritta p, Tropidia maniillata p, quadrata 
h; Mida.: Midas elavatus t; Conop.: Physocephala texana p; 
Tachin.: Archytas analis p, Belvosia bifasciata p, unifasciata p. 
Liiinaemyia p, Trichopoda plumipes p, t; Anthomy.: Hyetodosia p. 

T^epidoptera (8) — Nymphal.: Anosia h, Argynnis h, Euvanessa 
h. c, Polygonia interrogationis h, t, Vanessa atalanta h; Hesperi.: 
Achalarus h; Sphing.: Chocroeampa h; CteniLch.: Scepsis h. 

Coleoptera (1) — Lampyr.: Photinus h. 

Hemiptera (4) — Lygae.: Lygaeus h, p, e, Oncopeltus h; 
Pentntom.: Euschistus variolarius h, Podisus p, pred, n. 

WUhout polUnia (31):— 

Long-tongued Bees (4) — Bomb.: Bombias auricomus $, Bombus 
amerioanorum $; Megachil.: Megachile brevis $; Eucer.: Epimelis- 
sodes obliqua cf. 

Short-tongued Bees (1) — Ifnlict.: Augoehlora viridula 9, n. 

Other Hymenoptera (2) — Sphcc: Scelijjhron ; Philanth.: Cer- 
eeris clypeata. 

Diptera (5, n) — Ciilic: Culox s-timulans; Stratiomy.: Odon- 
tomyia cincta; Bombyli.: Anthrax sinuosa; Conop.: Stylogaster 
binnnulata : Tachin.: Cistogaster ocoidua. 



34 FLOWERS AND INSECTS— XXVI 

Lepidoptera (13) — Nymphal.: Basilarchia arcliippus, Speyeria; 
Lycaen.: Chrysophanus, Thecla calanus; Papilion.: Eurymus, 
Laertias, Papilio; Eesperi.: Epargyreus, Limochores taumas, 
Pholisora catullus, Polites ; Pyraust. : Loxostege. 

Coleoptera (4, n) — Ceramhyc: Tetraopes gn; Elater.: Mela- 
notus gn ; Scarahae. : 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.: Sareophaga 
eimbieis p ; Muse. : 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 l-^August 17 ; Mas, Y. 

With pollinia (19) : — 

Long-tongued Bees (5) — Ap.: Apis b; Stelid.: Anthidium cog- 
natum J*, h ; Megachil. : Coelioxys 8-dentata $, h, c ; Eucer. : Melis- 
sodes petalostemonis $, h, variabilis J*, h. 

Short-tongued Bees (1) — Halict.: Augochlora fervida $, c, fq. 

Other Hymneoptera (4, h) — Sphec.: Ammobia ichneumonea, 
Priononyx thomae, Sphex nigricans, proeera 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.: TrocMlus n. 

Long-tongued Bees (2) — Megachil.: Cyphopyga $, Megachile 
brevis (^ $. 

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; Bomh.: Bombias sepa- 
ratus c^ ? ^, h, fq, Bombus impatiens ^, h, Psithyrus laboriosus; 
?, h; Ceratin.: Ceratina $, h, c, p, fq; Megachil.: Trypetini: Neo- 
trypetes barbatus $, p, type; Megachilini: Megachile brevis J* $, 
h, t, fq; Coelioxyini: Coelioxys 8-dentata J*, h; Epeol.: Triepeolus 
concolor (^, h; Eucer.: Melissodes bimaculata ^ $, h, t, fq. 



CHARLES ROBERTSON 35 

Short-tongued Bees (10) — Halict.: Augochlora fervida (^ $, h, 
Chloralictus pilosus $, mp, versatus (^ ?, p, Curtisapis t'orbesii J*, 
Ip, Evylaeus pectoralis $, h, Ilalictus lerouxii (^ $, h, c, t, Seladonia 
c? $, h, p, ab ; Sphecodini : ^Machaeris stygia $, h, Spheeodes arvensis 
(^, h, t; Prosopid.: Prosopis ziziae $, p. 

Other Ilyinenoptera (32) — Sphcc. (h) : Ammol)ia iclincuinonea 
fq, pennsylvanica, Isodontia apicalis, Priononyx thomae; Bcmbic: 
Bembix numbilipeimis h; Scoli.: Elis obseura h, 5-cincta h, t, fq, 
Scolia bicincta h; PkUanth.: Cerceris bieornuta h, ab, clypeata h, 
c, fq, compacta h, c, fq, raui h, fulvipes h, robertsonii h; Vesp.: 
Polistes variatus h ; Eumen. : Eumenes f raternus h, c, t, Leionotus 
anormis h, t, ab, arvensis h, fq, foraminatus h; Crabron.: Ana- 
crabo c, p, Protothyreopus rufifemur h, p, fq; Larr. (h) : Astatus 
imieolor, Taehytes distiuetus, elongatus, raandibularis, pepticus 
fq; Pompil. (h) : Anoplius illinoensis, Batizonus, Lophopompilus 
philadelphicus, Priocnemoides fulvicornis, terminatus; Tcnthre- 
(7 171.: Hylotoma liumeralis h. 

Diptera (16) — Syrph.: Eristalis latifrons h, Syritta c, Tropidia 
quadrata h; Mida.: Midas elavatus h; Conop.: Physocephala texana 
h, tibialis h; Tachin.: Archytas analis h, Clytiomyia h, t, Linnae- 
myia h, t, Ocyptera tenuis h, t, Spallanzania h, c, p, t, Xanthomel- 
ana t, n, Senotainia trilineata t, fq, n; Muse: Compsomyia c, t, 
Phormia regina c, Pseudopyrellia h, e, t. 

Lepidoptera (3, h) — Nytnphal.: Anosia; Hesperi.: Pholisora 
hayhurstii, Polites. 

Without poUinm (60) : — 

Long-tongued Bees (1) — Bomb.: Bombus americanorum ^. 
Short-tongued Bees (4) — Halic: Agapostemon radiatus $, 
Chloralictus albipennis cT, sparsus $; Sphecodini: Sphecodium 
cressonii <^. 

Other Plymenoptera (9) — Sphec: Priononyx atrata, Sceli- 
phron, Sphex nigricans; Scoli.: Elis interrupta; Philanth.: Cerceris 
finitima; Crabron.: Solenius; Oxybel.: Notoglossa frontalis; 
Formici.: Formica rufibarbis; Chrysid.: Ilolopyga. 

Diptera (29 n) — Syrph.: Allograpta, Eristalis transversus, 
Mesogramma marginata, polita, Orthoneura nitida, Paragus bicolor, 
Sphaerophoria; Empid.: Parempis; Bombyli.: Exoprosopa faseiata, 
Systoechus; Conop.: Conops brachyrrhynchus; Tachin.: Cisto- 
gaster occidua, Exorista confinis, Gyranoprosopa, Ennyomma glo- 
bosa, Paradidyma, Phorantha purpurascens, Senotainia rubri- 
ventris, Siphoplagia anomala, flaccidirostris, Trichopoda pennipes, 
Trichophora; Sarcophag.: Ilelicobia helicis, Sarcophaga sinuata; 



36 FLOWERS AND INSECTS— XXVI 

Muse: Graphomyia, Lucilia sylvarum; Anthomy.: Calythea, Lim- 
nophora; Seps.: Sepsis. 

Lepidoptera (13) — Nymphal.: Argynnis, Phyciodes, Vanessa 
atalanta; Lycaen.: Chrysophanus, Everes; Papilion.: Eurymns, 
Heraclides, Pieris; Eesperi.: Achalarus, Euphyes verna, Limo- 
chores taumas, Pholisora catullus ; Ctenuch. : Scepsis. 

Coleoptera (3 n) — Ceramdyc: Typocerus sinuatus; Rhipiphor.: 
Ehipiphorus 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 prohoscides (14) : — 

Long-tongued Bees (1) — Eucer.: Epimelissodes atripes $. 

Short-tongued Bees (4, J* $) — Chloralictus sparsus ab, tegu- 
laris, versatus ab, zephyrus ab. 

Other Hymenoptera (4) — Sphec: Ammobia nuda; Scoli: Elis 
interrupta, 5-cincta f q ; Vesp. : Polistes variatus. 

Diptera (5) — Bombyli.: Anthrax fulvohirta; Conop.: Conops 
xanthopareus ; Tachin.: Alophora aeneoventris, Panzeria; Muse: 
Lucilia sericata. 

Without pollinia (8) : — 

Short-tongued Bees (6) — Halict.: Augochlora viridula J* $, 
Chloralictus illinoensis J*, Paralietus cephalicus 5, platyparius $; 
Prosopid.: Prosopis illinoensis 5, 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 (l)—Trochil.: Trochilus fq. 

Long-tongued Bees (6) — Ap.: Apis sc; Bomb.: Bombus ameri- 
canorum J* ^, impatiens ^, sc ; Megachil. (5, e, n) : Megaehile brevis, 
mendica ; Eucer. : Melissodes bimaculata $. 

Short-tongued Bees (2, 5, c, 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 {l)—Trochil.: Trochilus. 



CHARLES ROBERTSON 37 

Long-tongued Bees (4) — Bomb.: Bombus americanorum <^ $, 
ab, impatiens $, so, ab; MegachiL: Megachile brevis $, c, n. 
Short-tongued Bees (1) — Halict.: Chloralictus versatus $, n. 
Diptera (1) — Syrph.: Rhingia sf, n. 

Berberidackak 

Caulophyllum thalictroides (9: 154-5).— Blooms April 23- 
May 7; 29 visitors observed, April 23-]\[ay 3; Mi, Y. 

Long-tongued Bees (3, $) — Bomb.: Bombias separatus, Bombus 
impatiens, ridingsii. 

Short-tongued Bees (8, $) — HaJict.: Augochlora viridula, Chlo- 
ralicus sparsus se, versatus se, Curtisapis coriacea, Evj'lacus 4-macu- 
latus, Halictus lerouxii, Oxystoglossa confusa, pura. 

Other Ilymenoptera (6) — Scelion.: Prosacantha n; Bracon.: 
Bracon trifolii, vernoniae, Daenusa, Mierogaster ab, Opius ruficeps. 

Diptera (9) — Mycetophil.: Dynatosoma thoraeicum n, type; 
Syrph.: Chilosia petulea, Melanostoma obscurum, Rhingia; Empid.: 
Rhamphomyia piligeronis; Mnsc: Morellia ; Anthomy.: Hylemyia 
plumosa, type, Mydaea socialis; Oftcin.: Chlorops assimilis. 

Coleoptera (3) — Anthic: f'ori)hyra terminalis; Curculion.: Idio- 
stethus subcalvus; Mordcll.: ^Mordellistena biplagiata n. 

Podophyllum peltatum (9 : 155-6). — Blooms April 14-May 21 ; 
5 species and 8 individuals observed, April 25-]\Iay 14 ; Ma, W. 

Long-tongued Bees (5) — Ap.: Apis e, 1; Bomb. ($) : Bombias 
separatus 1, Bombus americanorum 3, impatiens 1; Eiicer.: Tetra- 
lonia dilecta (^, 2. 

BiGNONIACEAE 

Tecoma radicans. — Blooms June 8-September 10; 3 visitors 
observed, July 21, Augu.st 6; Ma (0), R. 

Birds (l)—Trochil.: Trochilus ab. 

Long-tongued Bees (1) — Bomb.: Bombus americanorum 5, c, 
ab, n. 

Short-tongued Bees (1) — Halict.: Chloralictus zephyrus $, c, n. 

Extra-floral nectaries. — Sixteen visitors observed, July 20, 21. 

Ants (4, 5) — Formic: Formica fusca 13, schaufussi 3, Tapi- 
noma 2; Myrmic: Cremastogaster ab, day and night. 

Short-tongued Bees (3) — Halict.: Chloralictus sparsus 9. 6, 
versatus $, 20, zephyrus (^ $, 7, 

Diptera (9) — Syrph.: Syritta 1; Sarcophiuj.: Ilelicobia helicis 
1, Sarcophaga a.ssidua 1, cimbicis 2; Muse: Lucilia sericata 1, Musca 
1, Stomoxys 1; Aijromyz.: Milichiella 11; Ortal.: Caniptoneura fq. 



38 FLOWERS AND INSECTS— XXVI 

BORANGINACEAE 

Cynoglossum officinale (int). — One visitor observed, June 11; 
Ma, R. 

Long-tongued Bees (1) — Megachil.: Megachile brevis $. 

Lappula virginiana. — Blooms July 5-Septeniber 9, 4 visitors 
observed, July 15, 22, 27 ; Mi, W. 

Short-tongued Bees (8, $) — Halict.: Chloralictus sparsus, ver- 
satus, Seladonia. 

Diptera (1) — ;S^i/rp^. : Syritta f q. 

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. (?) : Bombias scu- 
tellaris, Bombus americanorum ab, impatiens; Ceratin.: Ceratina 
$; Megachil.: Osmia atriventris J* 5, sc, fq, illinoensis ^ $, se, ab, 
eordata J*, distineta $, sc ; Nomad. : Gnathias ovatus $, Heminomada 
(^, Holonomada superba J*; Melect.: Bombomlecta cf $, ab; Eucer.: 
Tetralonia belfragei J*, dilecta J* $, ab, in cop, illinoensis <^, type; 
Anthophor. : Anthophora J*, f q. 

Diptera (2) — Bomhyli.: Bombylius atriceps, major fq. 

Lepidoptera (18) — NympJial.: Anosia fq, Charidryas, Phyc- 
iodes, Vanessa atalanta, cardui, huntera; Lycaen.: Chrysopbanus ; 
Papilion.: Eurymus ab, Iphiclides fq, Papilio, Pieris; Hesperi.: 
Pbolisora 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 (l)—Trochil.: Trochilus. 

Long-tongued Bees (16) — Ap.: Apis c; Bomb. (5): Bombias 
auricomus, separatus, Bombus americanorum fq, consimilis, rid- 
ingsii; Megachil.: Centrosmia ^ $, sc, fq, Ceratosmia <^ $, Osmia 
atriventris J* 5, sc, pumila $, sc ; Nomad. : Xanthidium dentariae J* ; 
Eucer.: Tetralonia belfragei <^ $, sc, fq, dilecta J* $, fq, in cop, 
dubitata J*, f q ; Anthophor. : Anthemoessa J* $, Anthophora J* ?, f q. 

Short-tongued Bees (2, $, n) — Halict.: Chloralictus versatus, 
Oxystoglossa confusa. 

Diptera (3) — Syrph.: Rhingia sf, Teuchocnemis 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-.Juue 9; 2 visitors ob- 
served, May 21, 24 ; Mi, W. 

Short-tongued Bees (1) — Ilalict.: Oxystofi:lossa confusa $. 
Lepidoptera (1) — Papilion.: Pontia. 

Campantjlaceae 

Campanula americana (4:70). — Blooms July l-Octobcr 6; 20 
visitors observed, July l(V-October 4; Ma, R. 

Lonfj-tongiied Ikn^s (9) — Ap.: Apis; Bomh.: Bombias separatus 
cf, Bombus amcrieanorum ^ ^, fq, impatiens c? $; Mi<j<nhil.: 
Megachilini : Megaeliile brevis cf $, petulans $, c, Oligotropus cam- 
panulae cT $, sc, oligolege, type; Coelioxyini : Coelioxys modesta $; 
Euccr.: Melissotles bimaeulata (^ 9- 

Short-tongued Bees (7) — Ilalict.: Agapostemon radiatus (^ $, 
Chloralictus sparsus $, e, n, Curtisapis coriacea <^ $, Ilalictus 
lerouxii cT, Oxystoglossa confusa $, c. n ; Prosopid.: Prosopis ziziae 
$, f, n; Collet.: Colletes latitarsis $, n. 

Other Ilymenoptera (1) — Scoli.: Elis 5-cineta. 

Diptera (1) — Syrph.: Pipiza nigribarba f, n. 

Lepidoptera (2) — Xytuplial.: Vanessa cardui; Ilespcn.: Plioli- 
sora hayhurstii. 

Specularia perfoliata. — Blooms May 18-June 29 ; 17 visitors 
observed, May 29-,June 29 ; Mi, R. 

Long-tongued Bees (3, $) — Bomh.: Bombias separatus, Bombus 
americanonim ; Ceratin.: Ceratina. 

Short-tongued Bees (6) — Halict. ($) : Augochlora fervida, 
Chloralictus versatus sc, Oxystoglossa confusa, similis sc, fq, Sela- 
donia; Collet.: Colletes brevicomis (^ $, sc, ab, oligolege. 

Other Ilymenoptera (1) — Eumen.: Leionotus foraminatus. 

Diptera (4) — Syrph.: Mesogramma marginata f, n; Bombyli.: 
Anthrax sinuosa f, n; Conop.: Oncomyia, Stylogaster biannulata. 

Lepidoptera (3) — Lycaen.: Everes; Papilion.: Pieris; Jlcsperi.: 
Pholisora hayhurstii. 

Caprifoliaceae 

Lonicera sempervirens (cult, 10:241). — Ma (0), R. 

Birds {l)—TrochU.: Trochilus ab. 

Lonicera sullivantii (10:241-4). — Blooms May M^June 7; 5 
visitors observed, May 17-27; Ma, Y. 

Birds {l)—Trochil.: Trochilus fq. 

Long-tongued Bees (3, $) — Bomb.: Bombus americanonim, im- 
patiens f q ; Anthophnr.: Anthoplu)ra sc. U\. 

Diptera (1) — Syrph.: Pipi/.a fvnioralis f, n. 



40 FLOWERS AND INSECTS— XXVI 

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, e). — Ap.: Apis fq; Ceratin.: Ceratina $. 

Short-tongued Bees (6, $, c) — Halict.: Chloralietus sparsus ab, 
versatus ab, zephyrus ab, Evylaeus areuatus, Halictus parallelus; 
Andren.: Traebandrena claytoniae. 

Diptera (19, f) — Syrph.: Allograpta fq, Baccba fuscipennis, 
Eristalis dimidiatus, tenax, Mallota cimbiciformis fq, Mesogramma 
geminata, marginata, Orthoneura nitida ab, Spilomyia bamifera 
fq, Syritta, Syrpbus americanus, ribesii fq, Xylota fraudulosa; 
Bombyli.: Antbrax sinuosa, Argyramoeba oedipus; Muse: Musea, 
Pseudopyrellia ; Anthomy.: Pborbia acra, platura. 

Coleoptera (5, f) — Cermnbyc: Euderces; Dermest.: Attagenus 
lq;Malach.: Anthocomus ; MordelL: Pentaria; Scarahae.: Euphoria 
fulgida. 

108 individuals taken on the flowers, July 8-10, 1920, showed: 

Long-tongued Bees (4, c) — ^Apidae. 

Short-tongued Bees (68, $, c) — Halictidae. 

Diptera (32, f )— 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 $ ^, Bombus amerieanorum '^, se, eonsimilis ^, sc, impatiens 
$ s, ^ sc, fq; Megachil.: Megaehilini: Megachile mendica J* $, 
Oligotropus (^; Coelioxyini: Coelioxys 8-dentata c?, sayi J* $; 
Eucer.: Melissodes bimaculata (^. 

Short-tongued Bees (27) — Halict.: Agapostemon radiatus J* $, 
ab, Augochlora fervida $, viridula cf $, ab, Chloralietus coreopsis $, 
cressonii J* 5? ^Q? obscurus (^ $, ab, sparsus (^ 5, sc, ab, tegularis 
<^ $, fq, versatus $, sc, ab, zephyrus J* $, ab, Curtisapis eoriacea 
(^ $, forbesii (^ $, Evylaeus foxii 5, pectoralis (^ $, fq, 4-macu- 
latus J* $, Halictus lerouxii J* 5, ab, parallelus (^ $, Odontalictus $, 
Oxystoglossa confusa c^ $, ab, pura cf ?, ab, similis J* ?, ab, Sela- 
donia (^ $ ; Sphecodini : Sphecodes arvensis cf $, ab, heraclei (^ $ ; 
Prosopid. ((^ $) : Prosopis sayi, ab, ziziae fq; Collet.: CoUetes 
nudus J* ?. 

Other Hymenoptera (43) — Sphec: Ammobia ichneumonea, 
nuda, pennsylvanica, Isodontia apicalis, macrocephala, Sphex gra- 
cilis, nigricans f q, vulgaris f q ; Bembic. : Bicyrtes 4-f asciata, Mega- 
stizus; ScoU.: Elis obscura, 5-cincta fq, Scolia bicincta; Philanth.: 



CHARLES liOBERTSOS 41 

Cerceris clypeata fq, compaeta, fumipcnnis, Philanthus punctatus 
fq; Yesp.: Polistes annularis, pallipcs, variatus; Eumen.: Ancistro- 
cerus tigris, Eumonos fraternus ab, Leionotus anorrais, arvensis, 
dorsalis, foraminatiis ab, fulvipcs, histrionalis, illinoonsis fq, 
megacra, percnnis. 4-s»'etus. scrophulariae, ziziac. Monobia, Zethus; 
Oxybel.: Notoglossa frontalis; Larr.: Xotogonidea, Tachytes auru- 
lentus; Pompil.: p]pisyron, Lophoi)onipilus philadelphicus fq, 
Poec'iloponipilus navus, Priocncinoidt's unifasciatus. 

Dipt(>ra (37) — Culic: Atidos; Stratiomy.: Nemotclus, Stratio- 
niyia meigenii: Syrph.: Eristalis tcnax, transversus, Ih'lophilus 
lactus, ^lallota ciinbiciformis, Mesogranima goniinata ab, marginata, 
Milesia, Ortlionoura nitida ab, Pipiza nigribarba, Spilomyia longi- 
cornis. Syritta ab, Tropidia albistylum, quadrata ; Empid.: Parcm- 
pis ab; Bombyli.: Exoprosopa fascipennis; Conop.: Conops xantbo- 
pareus, Onconiyia; Tachin.: Archytas analis fq, aterrima, Bclvosia 
bifasciata, unifaseiata, Cyphocera, Linnaeniyia, Ocyptt'ra dosiades, 
tenuis, Phorantha magna, Siphona, Spallanzania, Trichopoda pon- 
nipes, Tricbopliora, Xanthomelana ; Muse: Compsomyia, Lucilia 
caesar, Pseudopyrcllia fq. 

Lepidoptera (1) — Lycaen.: Cyaniris. 

Coleoptera (2) — Mordell.: Mordella marginiata, Mordellistena 
pubescons. 

On spvon 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) — Ilalict.: Agapostemon radiatus 
26, Augochlora fervida 1, viridula 73, Chloralietus coreopsis 1, 
cressonii 7, obscurus 29, sparsus 220, tegularis 6, versatus 69, 
zephyrus 17, Curtisapis forbesii 2. Evylaeus foxii 1, pectoralis 9, 
4-maculati:s 3, Ilalictus 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 Ilymenoptera (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 bicincta 3; 
Philanth.: Cerceris clypeata 5, compaeta 2, fumipennis 1, Philan- 
thus punctatus 3; Vesp.: Polistes pallipes 2, variatus 1; Eumen.: 
.tVncistrocerus tigris 1, Eumeni'S fraternus 15, Leionotus arvensis 3, 
foraniinatus 31, fulvipes 3, histrionalis 1, perennis 1, 4-KectU8 2, 
scrophulariae 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.: Oncomyia 1; Tachin.: 
Archytas analis 6, Cyphocera 1, Sipbona 1, Spallanzania 1, Tricho- 
poda pennipes 4, Tricbopbora 2; Muse: 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) — Boinb. (?) : Bombus americanorum, 
consimilis ab, ridingsii; AntJiophor.: Antbemoessa J*; Ceratin.: 
Ceratina $, n. 

Sbort-tongued Bees (2, ?, n) — Halict.: Halietus lerouxii c, 
Oxystoglossa confusa sc. 

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 sc; Ceratin.: Ceratina <^; 
Megachil.: Ceratosmia 5, Osmia pumila $; Nomad.: Gnatbias 
cuneatus J^, ovatus J*, Heminomada c^, Nomada cressonii J*, fq, 
illinoensis J*, sayi $, fq; Eucer.: Tetralonia dilecta ^ $. 

Sbort-tongued Bees (27) — Halict. ($) : Agapostemon radiatus, 
Cbloralietus cressonii, pilosus so, sparsus sc, ab, tegularis sc, ver- 
satus sc, ab, Evylaeus foxii sc, pectoralis sc, ab, Halietus lerouxii 
sc, Oxystoglossa confusa sc, fq; Spbecodini: Macbaeris stygia, 
Proteraner, Spbecodes arvensis fq, Spbecodium cressonii; Collet.: 
Colletes inaequalis cf ; Andren.: Andrena carlini $, dunningii $, 
erytbrogastra J*, pruni ^ $, sc, fq, in cop, sayi J* $, sc, fq, Opan- 
drena cressonii J* $, sc, fq, miserabilis c^ ?, sc, ab, personata (^ $, 
ab, Tracbandrena claytoniae $, sc, forbesii $, sc, bippotes $, sc, 
rugosa J*. 

Otber Hymenoptera (2) — Vesp.: Polistes pallipes; Eumen.: 
Ancistrocerus tigris. 

Diptera (36) — Stratiomy.: Stratiomyia quaternaria fq; Syrph.: 
Bracbyopa, Cbilosia capillata fq, petulca, punctulata, Cbrysogaster 
Ontario, Criorbina decora, umbratilis, Eristalis aeneus fq, dimidia- 
tus, transversus, Helopbilus latifrons, Mesogramma geminata, mar- 
ginata, Myiolepta strigilata fq, Ortboneura pictipennis, Paragus 



CHARLES ROBERTSON 43 

bicolor, Psilota, Syritta; Empid.: Empis nuda, otiosa fq, Rham- 
phomyia mutabilis, priapiilus, sordida; Bomhyli.: Bombylius major, 
pulchellus; Conop.: Myopa vesiculosa fq, in cop; Tachin.: Archytas 
analis, Gonia capitata, Gymnosoma, Peleteria f q ; Muse: Graph- 
omyia, Lucilia caesar, sericata fq, Phormia rogina, Pseudopyrellia. 
Lepidoptera (7) — Nymphal.: Charidryas, Vanessa huntera; 
Lycaen.: Cyaniris, Uranotcs; Ilcspcri.: Thanaos juvenalLs fq, mar- 
tialis; Sphing.: Ilemaris thysbe. 

Viburnum pubescens (10: 236-7; 16: 171-2).— Blooms May 2- 
25; 71 visitors observed, ^May 4-20; I\Iis, W. 

Long-tongued Bees (5) — Bomb.: Bombias separatus $, Bombus 
americanorum $; Ccratin.: Ceratina $, sc; Megachil.: Osmia 
pumila $; Eiicer.: Tetralonia dilecta (^. 

Short-tongued Bees (21) — Halict. ($) : Chloralictus cressonii 
sc, versatus sc, Curtisapis eoriacea, sc, E\'ylaeus foxii sc, pectoralis 
sc, fq, 4-maculatus, Oxystoglossa confusa sc; Prosopid.: Prosopis 
illinoensis $, pygmaea $, ziziae (^ ; Andren.: Andrena carlini $, sc, 
mandibulars $, sc, fq, salictaria $, sayi $, sc, fq, Opandrena cres- 
sonii (^ $, sc, ab, personata cf, fq, serotina $, sc, fq, Trachandrena 
claytoniae $, sc, ab, forbesii $, sc, nuda ?, sc, rugosa $, sc, fq. 

Diptera (26) — Syrph.: Chilosia capillata, Criorhina decora, 
umbratilis fq, Me.sogramma 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; Muse: 
Lucilia caesar; Oscin.: Chlorops proxima, Ilippelates plebejus. 

Lepidoptera (2) — Papilion.: Iphiclides; Hesperi.: Thanaos 
juvenalis. 

Coleoptera (17) — Bruch.: Bruchus hibisci ; Cerambyc: Cal- 
limoxys sanguinicollis, Euderces, Molorchus ab; Chrysomcl.: Dia- 
brotica vittata, Di.sonyclia; Dcnncst.: Anthrcnus musaeonim fq, 
Cryptorhopalum triste, Orphilus ab; Lampyr.: Telephorus dentiger; 
Mordell.: Mordellistena a.spersa fq, biplagiata fq, grammica; 
Oedemer.: Asclera ruficollis; Scarahae.: Euphoria fulgida, Iloplia 
fq, Valgus gn, n. 

C'ARYOPnYLLACEAE 

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, $) — Halict.: Chloralictus sparsus, ver- 
satus sc, Ilalictus lerouxii, Seladonia sc, fq. 



44 FLOWERS AND INSECTS— XXVI 

Diptera (9) — Syr ph.: Eristalis bastardi, Helophilus latifrons 
fq, similis fq, Melanostoma mellinum, Mesogramma marginata f, 
Sphaerophoria ; Bombyli.: Bombylius major; Tachin.: Peleteria; 
Muse: 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 $, 1; Ceratin.: Ceratina $, 2; Stelid.: Microstelis $, 1. 

Short-tongued Bees (4:8, ?) — Halict.: Oxystoglossa similis 5, 
Seladonia 1; Prosopid.: Prosopis pygmaea 1; Andren.: Opandrena 
personata 1. 

Other Hymenoptera (1: 1) — Eumen.: Leionotus illinoensis 1. 

Diptera (6:10) — 8yrph.: Mesogramma marginata 2, Spbaero- 
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 $. 

Silene stellata. — Blooms June 18- August 7 ; 1 visitor observed, 
June 23 ; Ma, W. 

Long-tongued Bees (1) — Bomb.: Bombus americanorum ^. 

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 ?, 1; 
Nomad.: Holonomada superba J*, 1; Eucer.: Tetralonia dilecta (f, 1. 

Short-tongued Bees (6:17) — Halict. (?) : Chloralictus sparsus 
3, versatus sc, 1, Oxystoglossa similis 5, Seladonia 5; Prosopid.: 
Prosopis ziziae J*, 2; Andren.: Opandrena personata $, sc, 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 c^; 
Megachil.: Ceratosmia J*; Nomad.: Gnathias ovatus J* $, Xanthid* 
ium luteoloides J*, luteolum (^. 



CHARLES ItOBEHTSOX 45 

Short-tongued Bees (19) — Halict.: Chlorulictus obscurus <^, 
pilosus $, sparsus $, sc, ab, versatus (^ $, fq, Evylaeus foxii % 
4-maciilatus $, Ilalietus lerouxii $, Odontalictus $, Oxystoglossa 
eonfusa $, ab, similis $, Scladonia $; Collet.: Colletes inacfiualis (^; 
An^/ren.: Andrena illinoonsis $, sayi c^, Opandrena cressonii (^ $, 
sc, in cop, type, niiserabilis cf $. personata (^ $, ab, Parandrena c?, 
Trachandrena forbesii $. 

Other Ilymenopt^ra (4) — Sapyg.: Sapyga ; Chalcid.: Smicra 
torvina ; Ichneumon.: Pimpla novita ; Tenthredin.: Dolerus arvensis. 

Diptera (29) — Mycetophil.: Sciara atrata ; Syrph.: Brachy- 
palpus frontosus, Chilosia capillata, Eristalis aeneus, dimidiatus, 
tenax, Melanostoma obseurum, Mcsogramma geminata, marginata 
fq, Platychirus quadratus, Syritta, Syrphus americanus, ribesii ; 
Tachin.: Gonia capitata ab, exul fq, !Sii)hona; Snrcophag: Cynomyia 
fq; Muse: Lucilia caesar, sericata, sylvarum, Musca, Myospila, 
Phormia terraenovac, Pollenia, Pseudopyrellia ; Anthoniy.: 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. rei)n's<^'nting 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, Evj'laeus 4-maculatus 2, Oxystoglossa similis 2; Andren.: 
Opandrena cressonii 2, niiserabilis 1, personata 21. 

Other Hymenoptera (1 : 1) — Sapyg.: Sapj'ga 1. 

Diptera (10:24) — Syrph.: Mesogramma geminata 2, marginata 
6, Syritta 1 ; Tachin.: Siphona 3; Muse: 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.: Iloplitis $, 1. 

Short-tongued Bees (4:13) — Halict.: Augochlora fervida 9, 1, 
Chloralictus versatus $, sc, 4; Collet.: Colletes aestivalis cT $. 6; 
Andren.: Opandrena cressonii 9, sc, 2. 

Other Hymenoptera (1:1) — Eumen.: Leionotus foraminatus 1. 

Evonymus atropurpureus fl6 : loS). — Blooms May 25-June 23; 
22 species and 51 individuals observed, June 7, 8, 11, li); Mi, R. 

Short-tongued Bees (5: 11, 9) — Halict.: Chloralictus sparsus 5, 
versatus 3, zephyrus 1. Oxystoglos.sa eonfusa 1, pura 1. 



46 FLOWERS AND INSECTS— XXVI 

Diptera (15:34) — 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; Muse: Myospila 4, Pbormia regina 3, Pseudopyrellia 6; 
Anthomy.: Phorbia acra 3, platura 1; Ortal.: Seoptera 1. 

Coleoptera (2 : 6) — Chrysomel.: Rhabdopterus 1 ; M or dell.: 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 % Bombus americanorum $; Ceratin.: Ceratina $; Megachil.: 
Megachile brevis $ ; Eucer. : Tetralonia dileeta $, f q. 

Short-tongued Bees (7, $, c) — Halict.: Chloralictus tegularis, 
versatus, Evylaeus peetoralis, 4-maeulatus, Oxystoglossa similis, 
Seladonia ; Andren. : Opandrena cressonii. 

Tradescantia pilosa. — Blooms June 8-September 27; 3 visitors 
observed, July 1 ; Ma, E,. 

Long-tongued Bees (2, ^, c) — Bomb.: Bombus americanorum, 
impatiens. 

Short-tongued Bees (1) — Halict.: Oxystoglossa pura $, e. 

Tradescantia virginiana (5:71). — Blooms May 8- August 11; 
18 visitors observed, June 3-17 ; Ma, R. 

Long-tongued Bees (7, c) — Ap.: Apis; Bomb.: Bombias auri- 
comus $, separatus $ ^, Bombus americanorum $, consimilis ^, sc, 
impatiens $; Ceratin.: Ceratina 5; Eucer.: Tetralonia dileeta $. 

Short-tongued Bees (2, $, c) — 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 ^8-June 28 ; Mis, W. 

Long-tongued Bees (3, ?) — Megachil.: Megachile petulans c; 
Bomb.: Bombias auricomus c; Nomad.: Gnathias cuneatus. 

Short-tongued Bees (4, $) — Halict.: Chloralictus pilosus sc, ver- 
satus sc, ab, Odontalictus sc, Paralictus simplex. 

Other Hymenoptera (8) — Crabron.: Protothyreopus rufifemur; 
Oxybel.: NotoglOssa americana, frontalis, Oxybelus packardii; 



CnAIiLES ROBERTSON 47 

Philayith.: Cerceris compacta, riifinoda ; Eumiu.: Leionotus forami- 
natus, fulvipes. 

Diptera (34) — Tahan.: Chrysops striatus; Neniestrin.: Rhyn- 
chocephalus; Bombyli.: Oncodocora, Toxophora ; Syrph.: Allo- 
grapta, Eristalis aeneus, dimidiatus, tenax, transvcrsiis Mallota 
cimbieiformis, Mesogramma marginata, Orthoneura nitida, Paragus 
tibialis, Sphaerophoria, Syritta, Syrphus americanus, ribesii; 
Conop.: Conops brachyrrhynchus, Oiicomyia; Tachin.: Apinops, 
Archytas analis, Cistogaster occidua, pallasii, Epigrimyia polita, 
Gymnosoma, Senotainia rubriventris, trilineata; Sarcophag.: Ileli- 
cobia helicis, Sarcophaga cimbicis; Muse: Lucilia sylvariim, Pseudo- 
pyrellia; Anthomy.: Phorbia aera, 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 
amerieanorum $, consimilis cf $, sc, impatiens ^, sc; Ap.: Apis sc, 
fq; EpcoL: Triepeolus reraigatus $. 

Short-tongued Bees (2) — Halict.: Curtisapis coriacea (^; 
Panurg.: Pseudopanurgus labrosiformis $, c. 

Other Ujinenoptera (1) — Scoli.: Scolia bicincta. 

Diptera (1) — <Sii/rp/i.; 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 c, 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 staminntc flowers (25) : 

Long-tongued Bees (3) — Megachil.: Osmia pumila o ; Bomb.: 
Bombus amerieanorum $; Nomad.: Xomada cressonii (^. 

Short-tongued Bees (2, $) — Halict.: E^'J'laeus foxii sc; Spheco- 
dini: Dialonia antennariae type. 

Diptera (14) — Empid.: Empis otiosii type: Syrph.: Eristali.s 
aeneu.s, Mesogramma geminata, Orthoneura nitida, Paragus tibialis, 
Platychirus hyperboreus, quadratus; Tachin.: Pachyophthalmus 
signatus; Sarcophag.: Cynomyia, Ilelicobia helicis, Sarcophaga 



48 FLOWERS AND INSECTS— XXVI 

cimbicis; Muse: Morellia; Anthomy.: Limnophora; Oscin.: Chlor- 
ops versicolor. 

Lepidoptera (4) — Nymphal.: Vanessa huntera; Hesperi.: 
Thanaos juvenalis; Noctu.: Drasteria ereehtea; Pyraust.: Loxostege. 

Coleoptera (2, f) — Dermest.: Anthrenus scrophulariae ; Oede- 
mer.: Asclera rufieoUis. 

On staminate and pistillate iiowers (26) : — 

Long-tongued Bees (5) — Ceratin.: Ceratina J*, ab, Zaodonto- 
merus ,^; Ap.: Apis; Nomad, (cf 5, fq) : Gnathias ovatus, Nomada 
sayi. 

Short-tongued Bees (12) — Halict. ($) : Chloralictus pilosus sc, 
sparsus sc, ab, versatus sc, ab, zepbyrus, Halictus lerouxii ab, Odon- 
talictus sc, ab, Oxystoglossa confusa fq, similis sc, fq, Seladonia sc, 
ab; Sphecodini: Sphecodes minor; Andren.: Parandrena ?, Trach- 
andrena claytoniae <^. 

Diptera (7) — Empid.: Rhampbomyia priapulus; Syrph.: Meso- 
gramma marginata in cop, fq, Spbaeropboria fq; Tachin.: Gonia 
capitata ab; Muse: Lucilia caesar, Pseudopyrellia ; Anthomy.: 
Phorbia platura. 

Lepidoptera (2) — Lycaen.: Cyaniris; Papilion.: Eurymus. 

On pistillate flowers (21) : — 

Long-tongued Bees (3) — Nomad.: Heminomada J^, Phor (^, 
Xanthidium luteolum $. 

Short-tongued Bees (11) — Halict. ($) : Chloralictus pruinosus, 
Evylaeus arcuatus, pectoralis; Sphecodini: Sphecodium cressonii; 
Andren.: Andrena erythrogastra ^T, illinoensis J* $, fq, nigrae $, 
salictaria cf, ab, sayi 5, Opandrena miserabilis J*, Trachandrena 
f orbesii (^. 

Other Hymenoptera (1) — Chrysid.: Holochrysis hilaris. 

Diptera (5) — Bomhyli.: 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 % sc; 
Halictus lerouxii $, Odontalictus $, sc, fq, Oxystoglossa similis $, 
sc, Seladonia J* $. 

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 RUliERTSOS 49 

Long-tongued Bees (9:26) — Megachil.: Anthemois $, sc, 1, 
Sayapis sa>i (^ $, se, 3; Ceratin.: Ceratina $, sc, 2; Bomb. (§) : 
Bombus americanorum se, 4. consimilis 1, impatiens sc, 2; Ap.: Apis 
7; Eucer.: Melissodes bimaculata (^ $, 3, venioniana <^, 3. 

Short-tongued Bees (4:11) — Halict.: Agapostemon radiatus 
(^ 9» 5, Chloralictus sparsus $, c, n, Ilalictus lerouxii (^ $, 2, Odonta- 
lictus 5, 2. 

Diptera (2:2) — Bombyli.: Exoprosopa fasciata, 1; Syrph.: 
Eristalis tenax 1. 

Lepidoptera (4:5) — Papilion.: Eurymus 1. Pieris 2; Hesperi.: 
Ilesperia 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 $, sc, 
Xanthosanis $, sc; Ceratin.: Ceratina 9» sc; Boinh.: Bombus ameri- 
canorum c? $, fq. impatiens (^ §, Psithyrus variabilis (^ ; Ap.: 
Apis sc; Eucer.: Melissodes autnmnalis (^ $, sc, simillima $, sc, 
trinodis $, sc. 

Short-tongucd Bees (8) — Halict.: Chloralictus pilosus (^, E\-y- 
laeus pectoralis $, sc. Odontalictus (^ $, sc, Oxystoglossa pura $; 
Collet. ($, sc) : Colletes americanus, compactus; Andren. ($, sc) : 
Pterandrena asteris solidaginis. 

Other Hymenoptera (1) — Bracon.: Chelonus. 

Diptera (8) — Bomhyli.: Anthrax halcyon, Geron rufipes, Spar- 
nopolius; Empid.: Parempis; Syrph.: Eristalis t^ans^•e^STlS, SjTphus 
arcuatus; Tachin.: Siphoplagia anomala ; Muse: Compsomyia. 

Ivcpidoptera (5) — Nymphal.: Phyciodes; Papilion.: Callidrjas, 
Pieris. Pontia, Zerene. 

Coleoptera (1) — Melo.: Epicauta pennsj-lvanica, n. 

Hemiptera (1) — Li/gof; 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; 
Xanthosanis 9; Bomb.: Bombus americanorum 10; impatiens 5; 
Ap.: Apis 8; Eucer.: Melissodes autumnalis 9; trinodis 1. 

Short-tongued Bee.s {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.: Spamopolius 2: Empid.: Parempis 
1 ; Syrph.: Syrphus arcuatus 1 : Muse: Compsomyia 1. 

Lepidoptera 2:3) — Papilitn, • pi. r-s 1 I'mitia 2 



50 FLOWERS AND INSECTS— XXVI 

Coleoptera (1:1) — Melo.: Epicauta peimsylvaniea 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 $; Megachil.: Try- 
petini: Neotrypetes productus J*, truncatus $, sc; Megacbilini : 
Megachile brevis 5, sc, generosa $, mendiea 5 ; Sayapis sayi $, sc, 
Xanthosarus (^ ?, sc; Coelioxyini: Coelioxys 8-dentata c^ $, fq, 
rufitarsis 5, sayi $ ; Ceratin. : Ceratina (^ $, fq, Zaodontomerus J*, 
fq; Bomb.: Bombias auricomus J* $, scutellaris c^ $ ^, separatus 
J* ^, Bombus americanorum J* $ ^, fq, impatiens (^ $, sc, fq, 
Psithyrus variabilis J*, fq ; Ap. : Apis sc, fq ; Nomad. : Holonomada 
placida J* $, fq, vincta $, Nomada vicina (^ ?, fq; Epeol.: Epeolus 
autumnalis J* $, bifasciatus $, pusillus J* $, fq, Triepeolus concolor 
2, cressonii J' $, donatus (^ $, fq, micropygius 5, type, pectoralis 
c^ $j fq? ^2/pe; Eucer.: Epimelissodes obliqua J*, Melissodes asteris 
5, #?/pe, autumnalis J* $, sc, ab, type, boltoniae $, sc, nivea $, sc, fq, 
simillima J* $, sc, fq. 

Short-tongued Bees (53) — Halict.: Agapostemon radiatus ,^ $, 
fq, splendens J* $, texanus c? $, sc, viridulus J* 5, sc, fq, Augochlora 
fervida J* $, sc, viridula J* $, Chloralictus coreopsis J* $, foveolatus 
J*, %pe, illinoensis J* ?, sc, fq, obscurus J*, fq, pilosus J* 5, f q, prui- 
nosus ,(^, smilacinae <^,i sparsus J^ $, sc, tegularis J\ 5, versatus 
J* $, sc, ab, zephyrus (^ 5, f q, Curtisapis coriacea J*, f orbesii <^ ?, sc, 
fuscipennis J*, fq, Dialictus (^ $, fq, Evylaeus arcuatus $, foxii 
$, pectoralis J* $, sc, fq, 4-maculatus $, Halictus lerouxii 5, sc, 
parallelus (^, Odontalictus cf ?, sc, ab, in cop, Oxystoglossa confusa 
<^ 2, sc, ab, pura <^ $, similis c^ $, fq, Paralictus platyparius ?, 
Seladonia cf 5 ; Sphecodini : Dialonia $, Machaeris stygia (^ $, Pro- 
teraner J* $, Sphecodium cressonii cf $, fq; Prosopid.: Prosopis 
illinoensis $, pygmaea ?; Collet. (J* $, sc) : Colletes americanus fq, 
armatus, compactus, f q, eulophi ; Andren. : Andrena nubecula cf $, 
sc, fq, Pterandrena asteris J^ $, sc, fq, in cop, pulchella ?, solidaginis 
J* 5> sc, fq; Panurg.: Calliopsis andreniformis $, sc, Heterosarus 
$, sc, Perdita $, sc, Pseudopanurgus albitarsis J*, asteris J* $, sc, 
ab, in cop., type, compositarum J* $, sc, ab, in cop. 

Other Hymenoptera (54) — Crabron.: Hypocrabro, Protothyreo- 
pus rufifemur, Solenius ; Philanth. : Cerceris astarte, bicornuta, cly- 
peata, fulvipes, Philanthus punctatus, ventilabris; Pemphredon.: 
Mimesa; Sphec: Ammobia ichneumonea, Priononyx atrata, fq, 
Sphex gracilis in cop, nigricans, pictipennis, procera, vulgaris; 
Larr.: Larropsis, Notogonidea, Tachytes obscurus; Bemhic: Bi- 



CHARLES ROBERTSON 51 

cjTtes ventralis, Stirus; Pompil.: Anoplius illinoensis, Ceropales 
fratema, Lophopompilus philadelphicus, Planieeps feralis; Vesp.: 
Polistes annularis, pallipes, variatus, Vespula cuneata, germanica 
fq, raaeulata; Eumen.: Ancistrocenis capra, campestris, ti^is fq, 
Eumenes fratemus, Leionotus anormis fq, ar\ensis, clypeatus, dor- 
salis, foraminatus, fuhnpes, fundatus, histrionalis, Zendalia zen- 
daloides; Scoli.: Elis interrupta, 5-cincta, Scolia bicincta; CKrysid.: 
Gonochrj-sis; Chalcxd.: Chalcis; Ichneumon.: Exetastes obscums, 
Metopius polycinctorius; Bracon.: Agathis vulgaris, Chelonus. 

Diptera (119) — Tipiil.: Geranomyia ; Bibion.: EHlophus sero- 
tinus; Bombyli.: Anthrax alternata fq, hypomelas, Argj-ramoeba 
albofasciata f, n, Exoprosopa decora, faseiata, fascipennis, Geron 
mil pes fq, Spamopolius fq, Systropus fq, Toxophora; Empid.: 
Parempis; Syrph.: Allograpta fq, Baceha clavata fq, Chilosia punc- 
tulata, Eristalis aeneus, bastardi, dimidiatus fq, flanpes, latifrons, 
tenax fq, trans^'e^sus, Helophilus latifrons, similis fq, in cop, Meso- 
gramraa geminata, marginata ab, Milesia, Orthoneura nitida, Para- 
gus bicolor, tibialis. Pipi2a nigribara, pulchella, Platychirus quad- 
ratus, Sphaerophoria fq, in cop, SpilomWa longicomis fq, 4-fasciata, 
Syritta fq, SjTphus americanus fq, ribesii fq, Tropidia albistylum, 
mamillata, Xanthogramma eraarginata; Conop.: Conops xantho- 
pareus, Oncomyia fq, Physocephala texana, tibialis, Robertson- 
omyia in cop, Stylogaster biannulata, Zodion fulvifrons fq, nanel- 
lum fq; Tachin.: Actia, Alophora aeneoventris fq, pulverea, Api- 
nops, Archj-tas analis fq, aterrima, Belvosia bifasciata, unifasciata, 
Celatoria, Chaetogaedia crebra, Cistogaster occidua fq, Ch'tiomyia, 
Distichona varia fq, Epigrimyia floridensis, Euphoroeera clari- 
pcnnis, Euthera, Gymnos6ma, Hypostena barbata, Leucostoma atra, 
neomexicana, nigricornis, Linnaemj-ia fq, Macquartia, Ennyomma 
globosa, Ocyptera lata, tenuis, Paradidyma, Peleteria fq, Phorantha 
asteris, magna, pruinosa, purpurascens, Senotainia rubriventris, 
trilineata, Siphona fq, Siphoplagia anomala, flaccidirostris, Spallan- 
zania fq, Sturmia phyciodis, Trichopoda pennipes, Trichophora, 
Winthemia. Xanthomelana ; Dexi.: Ptilodexia ; Sarcophag.: Cyn- 
omyia, Helicobia helicis, 4-setosa, Sarcophaga assidua, cimbicis, 
hunteri ; Muse: Compsomyia fq, Graphomj-ia, Lucilia caesar, seri- 
cata fq, Musca, Myospila, Pseudopyrellia fq, Storaoxys fq; An- 
thomy.: Calythea, Coenosia antennalis, antica, 6-notata, Ilylaemyia 
laevis, Limnophora, Phorbia acra fq, platura ; Ortal.: Chactopsis; 
Try pet.: Tn.'peta humilis. 

Lepidoptera (30) — Xymphal.: Anosia, Charidryas, Euptoieta, 
Hypatus, Junonia, Phyciodes fq, Vanessa cardui, huntera; Lycaen.: 



52 FLOWERS AND INSECTS— XXVI 

Chrysophaniis, Everes, Uranotes; Papilion.: Callidryas, Eurema, 
Eurymus fq, Nathalis, Pieris, Pontia fq, Xanthidia, Zerene; 
Hesperi.: Atalopedes fq, Epargyreus, Hesperia fq, Limochores 
taumas, Polites; Ctenuch.: Scepsis fq; Noctu.: Drasteria erechtea, 
erichto, Feltia, Heliothis armiger, Plusia simplex. 

Coleoptera (6) — Ceramhyc: Cyllene robiniae f, n; Chrysomel. 
(f, n) : Diabrotica 12-punetata, longicornis, vittata; Lampyr.: 
Chauliognathus pennsylvanicus fq; Melo.: Epieauta pennsylva- 
niea f, n. 

Hemiptera (3) — Caps.: Lygus; Lygae.: Lygaeus fq; Beryt.: 
Harmostes. 

September 28-November 6, 1909, the following 125 species and 
1,129 individuals were taken on the flowers : 

Long-tongued Bees (16:168) — Megachil.: Megachile brevis 2, 
Sayapis sayi 1, Xanthosarus 2; Ceratin.: Ceratina 10; Bomb.: 
Bombias auricomus 1, scutellaris 1, separatus 2, Bombus ameri- 
canorum 33, impatiens 32, Psithyrus variabilis 12; Ap.: Apis 52; 
Epeol.: Triepeolus donatus 1; Eucer.: Melissodes autumnalis 9, 
boltoniae 3, nivea 3, simillima 4. 

Short-tongued Bees (25:385) — Halict.: Agapostemon radiatus 
3, texanus 1, Chloralictus coreopsis 3, illinoensis 15, obscurus 6, 
pilosus 3, sparsus 65, tegularis 1, versatus 166, zephyrus 5, Cur- 
tisapis fuscipennis 12, Evylaeus pectoralis 5, Odontalictus 18, 
Oxystoglossa confusa 13, pura 4, similis 13, Paralictus platyparius 
8; Sphecodini: Machaeris stygia 3; Collet.: CoUetes americanus 18, 
compactus 1, eulophi 1 ; Andren. : Andrena nubecula 1, Pterandrena 
pulchella 1, solidaginis 4; Panurg.: Pseudopanurgus composi- 
tarum 15. 

Other Hymenoptera (13: 29) — Philanth.: Philanthus punctatus 
1; Sphec: Ammobia ichneumonea 1; Vesp.: Polistes annularis 5; 
pallipes 3, variatus 4, Vespula germanica 1, maculata 5 ; Eumen. : 
Aneistrocerus capra 2, tigris 1, Leionotus anormis 2, arvensis 1, 
clypeatus 2, foraminatus 1. 

Diptera (53:382) — Bihion.: Dilophus serotinus 4; Bomhyli.: 
Sparnopolius 33; Syrph.: AUograpta 3, Eristalis latifrons 1, tenax 
3, transversus 1, Helophilus similis 2, Mesogramma geminata 3, 
marginata 74, Sphaerophoria 14, Spilomyia longicornis 4, 4-fasciata 
2, Syritta 10, Syrphus americanus 3; Conop.: Oncomyia 3, Zodion 
fulvifrons 1, nanellum 3 ; Tachin. : Alophora aeneoventris 2, pul- 
verea 1, Archytas analis 10, aterrima 2, Belvosia unifasciata 1, 
Celatoria 1, Chaetogaedia crebra 1, Cistogaster occidua 7, Distichona 
varia 5, Euphorocera claripennis 2, Gymnosoma 3, Leucostoma atra 



CHARLES ROBERTSON 53 

1, Linnaemyia 6. Paradidyina 4. Peleteria 2, Phorantlia astcris 1, 
purpiirascens 2. Senotainia rubrivcntris 1, Siphoplajj^ia aiiomala 1, 
Spallanzania "), Sturmia pliyciodis 2, Wintlu'inia 1; Sarcophag.: 
Cynomyia 'A, Ilelicobia helicis 4, 4-setosa 2, Sareophaga assidua 3, 
cimbicis 6; Muse: Compsomyia 6, Lucilia cacsar 8, sericata 23, 
Musea 4, ^lyospila 1, Psoiidopyrcllia 73, Stomoxys 6; Anthomy.: 
Phorbia acra 12, platura 6. 

Lepidoptera (13: 88) — NymphuL: Phyciodes 1"), Vanessa cardui 
1, huntera 2; Lycaen.: Everes 1 ; Papilion.: Eurymus 31, Pontia 1 ; 
Hesperi.: Atalopedes 22, Hesperia 3, Limochores taumas 1, Polites 
3; Ctennch.: Scepsis 6; Noctu.: Drasteria orechtea 1, Plusia 
simplex 1. 

Coleoptera (5:77) — Chrysomel.: Diabrotica 12-punctata 34, 
longicornis 5, vittata 3; Lampyr.: Chauliognathus pennsylvanicus 
18; Melo.: Epicauta pennsylvanica 17. 

Aster lateriflorus. — Blooms September 17-October 30; 57 visi- 
tors observed, September 17-Oetober 15 ; Mis, W. 

Long-tongued Bees (9) — Megachil.: Megachile mendica $, sc, 
Xauthosanis $, so; Ceratin.: Ceratina $, sc, Zaodontomerus (^; 
Bomb. {(^ $) : Bombus americanorum sc, consimilis, impatiens sc, 
ab; Ap.: Apis sc, f q ; Enter.: ^lelissodes simillima $, sc. 

Short-tongued Bees (15) — Ilalict.: Agapostemon viridulus $, 
sc, Augochlora viridula cf $, Chloralictus versatus (^, Curti.sapis 
coriacea cT ?» fuscipenuis (^, Oxystoglos.sa confusa $, pura $, similis 
$, Paralictus platyparius J*; Collet.: Colletes americanus $, sc, 
compactus J' $, sc, ab; Andren.: Andrena nubecula $, sc, Pteran- 
drena solidaginis $; Panurg.: Pseudopanurgus asteris $, sc, com- 
po.sitarum <^ $, sc. 

Other Ilymenoptera (14) — Crabon.: Synothyreopus ; Sphec: 
Sphex procera; Vesp.: Polistes annularis, ab, pallipes, fq, Vespula 
germanica, maculata; Eumen.: Anci.strocerus capra, campestris, 
tigris, Eumenes fraternus, Leionotus anormis, foraminatus, scrophu- 
lariao, Symmorplius debilis. 

Diptera (17) — Syrph.: Baccha fuscipennis, Eristalis transver- 
sus, Ilelophilus simiii.s, Sericomyia, Spilomyia longicornis, 4-fas- 
eiata, Syrphus americanus, torvus, Xanthogramma emarginata ; 
Tachin.: Arehytas anali.s, aterrima, fq, Cistogaster occidua, Cypho- 
cera, Leskiomima prima. Trichophora; Mu.<<c.: Lueilia caesar, ab, 
Pseudopyrellia. 

Lepidoptera (2) — NymphaJ.: Basilarchia astyanax ; Ctenurh.: 
Scepsis. 

September 28-October 11, the following 37 species and 172 in- 
dividuals were taken as thev came to the flowers: 



54 FLOWERS AND INSECTS— XXVI 

Long-tongued Bees (6:25) — Megachil.: Megaehile mendica 2, 
Xanthosarus 2; Ceratin.: Ceratina 3; Bomh.: Bombus american- 
orum 3, consimilis 1, impatiens 14. 

Short-tongued Bees (11:37) — Halict.: Agapostemon viridulus 
1, Augochlora viridula 5, Chloralictus versatus 1, Curtisapis 
coriacea 1, fuscipennis 1, Oxystoglossa confusa 2, pura 1, similis 5 ; 
Collet.: CoUetes americanus 1, compactus 18; Panurg.: Pseudo- 
panurgus asteris 1. 

Other Hjmienoptera (8:50) — Sphec: Sphex proeera 1; Vesp.: 
Polistes annularis 18, pallipes 10, Vespula maculata 2; Eumen.: 
Ancistrocerus capra 7, tigris 4, Eumenes fraternus 6, Leionotus 
foraminatus 2. 

Diptera (10:57) — SyrpJi.: Eristalis transversus 1, Helophilus 
similis 3, Syrphus torvus 1 ; Tachin.: Archytas analis 1, aterrima 10, 
Cistogaster oecidua 1, Cyphoeera 1, Trichophora 1 ; Muse. : Lucilia 
caesar 36, Pseudopyrellia 2. 

Lepidoptera (2:3) — Nymphal.: Basilarchia astyanax 1; 
Ctenuch.: Scepsis 2. 

Aster multiflorus. — Blooms September 9-October 22 ; 43 species 
and 124 individuals taken on October 6, 15, 17 ; Mis, W. 

Long-tongued Bees (5:33) — Ap.: Apis 4; Bomh.: Bombus 
americanorum J* ^, 6, impatiens J* $, 17, Psithyrus variabilis ^, 2 ; 
Eucer.: Melissodes simillima 5, sc, 4. 

Short-tongued Bees (8:44) — Halict.: Chloralictus illinoensis % 
sc, 1, obscurus 5, sc, 1, pilosus 2, !> versatus J* $, sc, 33, Paralictus 
platyparius $, 1; Collet.: Colletes americanus ^ 5, sc, 5, compactus 
5, 1; Panurg.: Pseudopanurgus compositarum $, sc, 1. 

Other Hymenoptera (11 : 17) — Sphec: Sphex gracilis 1, proeera 
1; Vesp.: Polistes annularis 3, variatus 4, Vespula maculata 1; 
Eumen. : Ancistrocerus catskillensis 2, Leionotus anormis 1, clypea- 
tus 1 ; Crahron.: Solenius 1 ; Pompil.: Anoplius illinoensis 1, Lopho- 
pompilus philadelphicus 1. 

Diptera (13:21) — BomhylL: Sparnopolius 2; Syrph.: Eristalis 
tenax 2, Mesogramma geminata 1, marginata 3, Paragus tibialis 2, 
Sphaerophoria 4, Syritta 1, Syrphus americanus 1; Tachin.: 
Archytas aterrima 1, Spallanzania 1; 8arcophag.: Helicobia helicis 
1; Anthomy.: Coenosia antica 1, Limnophora 1. 

Lepidoptera (2:2) — Papilion.: Nathalis 1, Pieris 1. 

Coleoptera (1:4) — Chrysomel.: Diabrotica 12-punctata 4. 

Hemiptera (3:3) — Core.: Alydus eurinus 1, pilosulus 1; 
Beduvi. :Siinea 1. 



CHARLES RO BEETS ON 55 

Aster novaeangliae (15:459). — Blooms July 24-Xovember 4; 
41 visitors observed, July 24-October 10; Mas, R. 

Long-tongued Bees (13) — Megai'hil.: Megaehile brevis $, sc, fq, 
Xanthosarus (^ $, sc, fq; Ceratin.: Ceratina $, sc; Bamh.: Bombias 
scutcUaris <^, separatus (^, Bombus amerieanoi-um <S 9 ^> so, fq, 
impatiens (^; Ap.: Apis sc; Eucer. ($) : Melissodes agilis sc, au- 
tumnalis sc, boltoniae se, nivea, simillima sc. 

Short-tongued Bees (7) — Halict.: Chloralictus coreopsis $, c, n, 
Halietus parallelus (^, Odontalictus ,^; Collet.: Colletes americanus 
9, c, n; Andrcn.: Pterandrena helianthi $, c, solidaginis $, c, n; 
Panurg.: Pseudopanurgus compositarum $, c, n. 

Diptera (11) — Bombyli.: Exoprosopa fascipennis, Spamopolius, 
Systoechus; Syrph.: Eristalis dimidiatus, latifrons, tenax sf, trans- 
versus, Helophilus similis, Syrphus americanus f, n, Tropidia 
mamillata f, n; Conop.: Styloga.ster biannulata fq. 

Lepidoptera (10) — Xymphal.: ^Vnosia, Phyciodes, Vanessa car- 
dui; Papili&n.: Eurymus fq. Pontia, Zerene; Hesperi: Hylephila, 
Polites; Noctu.: Heliothis armiger, Plusia simplex. 

Aster paniculatus (15:460). — Blooms September 20-October 
17; Mis, \V. The following 101 species and 229 individuals were 
taken as they came. 

Long-tongued Bees (10:25) — Ap.: Apis 10; Bomb.: Bombus 
americanorum ^, 1, impatiens (^, 6; Ceratin.: Ceratina (^, 1; 
Megachil.: Trypetini : Xeotrypetes truncatus $, 1; Megachilini: 
^legachile brevis cf $, sc, 2. Xanthosarus $, 1 ; Goelioxyini : Coelioxys 
8-dentata $, 1; Eucer.: Melissodes boltoniae $, sc, 1, similima $, 
sc, 1. 

Short-tongued Bees (20: 62) — Halict.: Agapostemon radiatus <^, 

2. Chloralictus sparsus $, sc, 10, versatus (^ $, sc, 2, zephyrus $, 1, 
Curtisapis coriacea (^, 4, forbesii (^, 1, E^'J'laeus pectoralis $, 1, 
Ilalictus lerouxii $, 1, Odontalictus <^ $. sc, 22, Oxystoglossa con- 
fusa $, 2. similis $, 1, Seladonia $. 2; Sphecodini : Proteraner <^, 1; 
Prosopid.: Prosopis pygmaea $, 1 ; Collet.: Colletes americanus $, 1, 
compactus $, sc, 2; Andren.: Andrena nubecula $, 2, Pterandrena 
asteris cT $. sc, 3, type, solidaginis $. sc. 1 ; Panurg.: Pseudopanur- 
gus compositarum $, sc, 1. 

Other II^Tnenoptera (27:51) — Philanth.: Cerceris prominens 
1, Eucerceris 1, Philanthus politus 1, punctatus 1 ; Sphec: Isodontia 
apicalis 2, Sphex gracilis 1. nigricans 1, procera 3. vulgaris 2; 
Larr.: Xotogonidea 1 ; Pompil.: Episyron 1 ; Vesp.: Polistes pallipes 

3, rubiginosus 13, variatus 2, Vespula germanica 1. maculata 2; 
Eumen.: Ancistrocerus capra 1, catskillensis 1, tigris 1, Eumenes 



56 FLOWERS AND INSECTS— XXVI 

fraternus 2, Leionotus anormis 2, arvensis 1, f oraminatus 2, scrophu- 
lariae 1 ; Scoli. : Elis 5-cincta 1 ; Ichneumon. : Lampronota varia 1 ; 
Bracon.: Bracon longicauda 1. 

Diptera (28:67) — Syrph.: Eristalis aeneus 1, dimidiatus 1, 
tenax 4, transversus 4, Mesogramma geminata sf, 1, marginata 2, 
Sphaerophoria 1, Spilomyia 4-fasciata 1, Syritta 10, Syrphus 
americanus 1, ribesii f, 4; Conop.: Oncomyia 1; Tachin.: Alophora 
aeneoventris 1, Archytas aterrima 3, Linnaemyia 1, Senotainia 
trilineata 1, Spallanzania 1, Trichopoda pennipes 1; Dexi: Ptilo- 
dexia 1 ; Sarcophag. : Sarcophaga cimbicis 1 ; Mitsc. : Compsomyia 
5, Graphomyia 3, Lucilia eaesar 1, sericata 6, Phormia regina 1, 
Pseudopyrellia 7, Stomoxys 2; Ortal.: Chaetopsis (s?) 1. 

Lepidoptera (12:12) — NynipJial.: Phyciodes 1, Vanessa cardui 
1, huntera 1; Lycaen.: Cyaniris 1; Papilion.: Eurymus 1, Pieris 
1, Pontia 1 ; Hesperi.: Atalopedes 1, Polites 1, Thanaos martialis 1 ; 
Ctenuch.: Scepsis 1; Noctu.: Plusia simplex 1. 

Coleoptera (3:12) — Ceramhyc: Cyllene robiniae f, 1, n; 
Lampyr.: Chauliognathus pennsylvanieus 10; Scarahae.: Euphoria 
sepulchralis f, 1, n. 

Hemiptera (1:1) — Core.: Alydus eurinus 1. 

Aster sagittifolius. — Blooms August 12-November 4 ; 40 visitors 
observed, August 27-October 26 ; Mas, E. 

Long-tongued Bees (11)— Ap.: Apis fq; Bomb. (J* ^) : Bombus 
americanorum ab, consimilis, impatiens so, ab; Megachil. ($) : Mega- 
cMle brevis sc, mendica, Xanthosarus sc; EpeoL: Epeolus pusillus 
J*; Eucer. ($) : Melissodes autumnalis sc, nivea sc, simillima. 

Short-tongued Bees (8) — Halict.: Augochlora viridula $, sc, 
Evylaeus pectoralis $, Odontalictus J*, Oxystoglossa pura c^; Collet.: 
Colletes americanus $, sc, compactus $, sc, ab; Andren.: Pteran- 
drena asteris $; Panurg.: Pseudopanurgus asteris J* 5? sc, in cop. 

Other Hymenoptera (3) — Sphec: Sphex procera; Vesp.: Ves- 
pula germanica, maculata. 

Diptera (11) — Syrph.: Mesogramma geminata, marginata, Spilo- 
myia longicornis, 4-fasciata, Syrphus ribesii; Empid.: Parempis; 
Bonihyli: Exoprosopa fascipennis; Sarcophag.: Cynomyia; Muse: 
Compsomyia, Lucilia eaesar, sericata. 

Lepidoptera (3) — Papilion.: Callidryas; Hesperi.: Hesperia; 
Ctenuch.: Scepsis. 

Coleoptera (4) — Chrysomel.: Diabrotica longicornis, vittata; 
Lampyr.: Chauliognathus pennsylvanieus; Melo.: Epicauta penn- 
sylvanica f, n. 

October 8, 21, 1909, the following 29 species and 81 individuals 
were taken as they came to the flowers : 



CHARLES ROBERTSON 57 

Long-tonnrued Bees (6: 33) — Ap. Apis 3; Bomb.: Borabus ameri- 
eanonini 10, impatiens 12; Megachil.: Xanthosarus 1 ; Eucvr.: Melis- 
sodes autumnalis 6, siniillima 1. 

Short-ton{,nied Bees (1 : 20)— Ilalivt.: Evylat-us ix'ctoralis 1, 
Odontalictus 3, Oxysto«,'los.sii i)ura 1 ; Collet.: Collates amcricanus -, 
eompactus 11; Andrcn.: I'terandrciia asteris 1; I'tinurfj.: Pseudo- 
panurj^us asteris 1. 

Other Ilymenoptera (3: f))— .S'p/jfc.: Sphex jtriM-.Ta 1; Vrsp.: 
Vospula gernianica 2, maculata 2. 

Diptera (7: 11) — Syrph.: Mesograininu <j:c'inijiata 1, luarj^'inata 1, 
Spilomyia longieornis 2, Syrpbus ribesii 3; Empid.: Parempis 1; 
Mttsc: Liieilia eaesar 2, sericata 1. 

Lepidoptera (2: 4) — Hesperi.: Ilesperia 1; Ctenuch.: Scepsis 3. 

Coleoptera (4: 8) — Chrysomcl.: Uiabrotica longieornis 3, vit- 
tata 1; Lampyr.: Cbauliognathus pennsylvanicus 2; Melo.: Epi- 
cauta pennsylvanica 2. 

Aster salicifolius. — Blooms September 23-Oetober 30 ; 44 species 
and 121 individuals taken on the flowers, October 10-22; Mas, R. 

Long-tongued Bees (10: 56) — Ap.: Apis 5; Bomb.: Bombias 
separatus (^, 1, Bombus americanorum <^ ^, 7, impatiens (^ $, 26, 
I*sithyrus variabilis (^, 10; Ceratin.: Ceratina $, 1; Megachil.: 
Megachile brevis $, 1, Xanthosaras $, sc, 2; Euccr.: Melissodes 
agilis $, 1, simillima $, sc, 2. 

Short-tongued Bees (7: 13) — Halict.: Agapostemon radiatus (^ 
9, sc, 2, Augochlora fervida c^, 1, Chloralictus versatus (^, 2, Odon- 
talictus (^ $, sc, 3; Andrcn.: Pterandrena asteris $, sc, 2, solidaginis 
$, sc, 2; Panurg.: Pseudopanurgus compositarum $, 1. 

Other Ilymenoptera (2: 4) — Sphcc: Sphex procera 3; Eumcn.: 
Leionotus arvensis 1. 

Diptera (16: 26)— Syrph.: Eristalis tenax f, 2, Ilelophilus 
similis 1, Syritta 1, Syrphus americanns f, 1, ribesii 2; Bombyli.: 
Sparnopolius 2; Conop.: Physocephala texana 1, Stylogastor bian- 
nulata 3; Tachin.: Alophora aeneoventris 1, Archytas analis 3. 
Spallanzania 1 ; Muse: C'oinpsomyia 3, Graphomyia 1, Lucilia eaesar 

1, sylvarum 1, Pseudopyrellia 2. 

Lepidoptera (8: 20) — Nymphal.: Anosia 1, Euptoieta 1, Vanessa 
cardui 1, huntera 1; Papilion.: Eurymus 12; Hesperi.: Atalopedes 

2, Hesperia 1, Hylephila 1. 

f'oleoptcra d : 2) — Chrysomel.: Diabrotica 12-punctata 2. 

Aster turbinellus. — Blooms August 21-Novrmber 4 ; 26 species 
and 56 individuals observed, September 20-October 8 ; Mas, R. 



58 FLOWERS AND INSECTS— XXVI 

Long-tongued Bees (11 : 32) — Ap.: Apis sc, 6; Bomb.: Bombias 
auricomus J*, 1, Bombiis americanorum J* $, se, 4, impatiens ^, se, 7 ; 
Megachil.: Megachilini: Megachile brevis $, sc, 1, Xanthosarus 5, c, 
1 ; Coelioxyini : Coelioxys sayi (^, 1 ; Nomad.: Holonomada placida $, 
1; Eucer. (5) : Melissodes autumnalis sc, 8, nivea sc, 1, simillima 1. 

Sbort-tongued Bees (3: 3) — Halict.: Agapostemon viridulus J*, 
1, Curtisapis fuscipennis J*, 1; Collet.: CoUetes compactus $, sc, 1. 

Diptera (8:13) — Syrph.: Helophilus similis 1, Mesogramma 
marginata 1, Pterallastes f, 1, Syritta 2, Syrpbus arciiatus 1; 
Bomdyli.: Anthrax halcyon 1, Sparnopolius 2, Systropus 3. 

Lepidoptera (2: 6) — Nymphal.: Phyciodes 3; Hesperi.: Atalo- 
pedes 3. 

Coleoptera (2: 3) — Chrysomel.: Diabrotica 12-punctata 2; 
Lampyr.: Chauliognathus pennsylvanicus 1, 

Bidens aristosa (15: 473^). — Blooms August 6-October 2; 
133 visitors observed August 26-October 2 ; Mas, Y. 

Long-tongued Bees (37) — Ap.: Apis ab; Bomb.: Bombias auri- 
comus J*, scutellaris J* ^, separatus J* ^, fq, Bombus americanorum 
J* ^, sc, ab, impatiens <:f $ $, sc, ab, Psithyrus variabilis 5 ; Cera- 
tin.: Ceratina 5, sc; Megachil.: Trypetini: Neotrypetes productus 
(^, truncatus c?* ?, sc; Megachilini: Megachile brevis (^ 5, sc, fq, 
mendica 5, sc, petulans cf 5, sc ; Coelioxyini : Coelioxys 8-dentata $, 
sayi J* ; Nomad. : Holonomada vincta J*, Nomada vicina J* ; Epeol. : 
Epeolus autumnalis (^, bifasciatus $, coreopsis J*, type, pusillus J* ?, 
fq, Triepeolus concavus (^, concolor cf $, cressonii J^ $, fq, 
donatus J' $, lunatus $, pectoralis J*, remigatus (^ ; Eucer.: Epimelis- 
sodes atripes $, obliqua (^ $, sc, Melissodes agilis J* $, fq, autumnalis 
(^ $, sc, bimaculata $, boltoniae $, sc, ab, nivea J*, simillima J*, 
trinodis J^ $, sc, fq. 

Short-tongued Bees (22) — Halict.: Agapostemon radiatus $, sc, 
viridulus J* $, sc, Augochlora viridula 5, sc, Chloralictus pruinosus 
J*, Curtisapis coriacea c^, Odontalictus $, sc, Oxystoglossa pura $ ; 
Collet. : Colletes armatus 5, compactus (^ ?, fq, eulophi 5, sc ; Du- 
foure. : Halictoides (^ ; Andren. : Pterandrena aliciae $, sc, helianthi 
cf, pulchella J* $, sc; Panurg.: Calliopsis andreniformis $, colora- 
densis J^ $, sc, in cop, Perdita J* $, sc, ab, in cop, Pseudopanurgus 
eompositarum <^, labrosiformis $, sc, rudbeckiae J* $, sc, ab, rugosus 
$, sc, solidaginis J*. 

Other Hymenoptera (18) — Philanth.: Cerceris prominens, ful- 
vipes; Sphec: Sceliphron, Sphex gracilis, nigricans; Bemhic: 
Bembix nubillipennis, spinolae, Bicyrtes 4-fasciata, ventralis; Nys- 
son.: Pseudoplisus divisus; Yesp.: Vespula germanica; Eumen.: 



CHARLES ROBEHTSON 59 

Ancistrocerus tigris, Leionotus histrionalis ; ScoU.: Elis 5-cincta, 
Scolia bieincta ab, Ichneumon.: Ceratosoma, Exetastes suavcolens 
fq; Bracon.: Aenignostomus. 

Diptera (34) — Syrph.: Eristalis diniidiatus fq, latifrons, trans- 
versus, vinetorum, Mesogramma polita 1", n, ^lilesia, Orthoncura 
nitida f, i\, Syri)lius amcrieanus 1", ii ; Bombyli.: Anthrax halcyon, 
Exoprosopa decora, I'asciata l"q, faseipi'imis f(i, Lcpidophora, Spar- 
nopolius ab, Systropus in cop., Toxophora ; Conop.: Physoccphahi 
texana, Robcrtsonomyia, Zodion fulvifrons; Tachin.: Actia, Api- 
nops, Archytas aterrima fq, Leskiomima secunda, Ocyptera tenuis, 
Peleteria fq, Senotainia trilineata, Siphoplagia anomala fq, Spal- 
lanzania; Dexi.: Ptilodexia, Scotiptcra fq; Mmc: Compsomyia, 
Lucilia caesar; Anth(y>ny.: Phorbia platura, Proboscirayia. 

Lepidoptera (15) — Xymphal.: Anosia fq, Argj-nnis, Basilarchia 
arohippus, astyanax, Phyciodes, Vanessa eardui f q ; Papilion.: Eu- 
rymus, Laertias, Nathalis, Papilio, Pieris; Hesperi.: Epargyreus, 
Limochorcs taumas, Thanaos juvenalis; Xoctu.: Heliothis armiger. 

Coleoptcra (G) — Calundry.: Rhodobaenus gn, n; Chrysomel. 
(f, n) : Chrysoraela, Diabrotica 12-punetata; Lampyr.: Chauliogna- 
thus pennsylvanicus ab, in cop; Melo (f, n) : Epicauta cinerea, 
pennsylvaniea. 

Hemiptera (1) — Pcntatom.: Euschistus variolarius. 

Bidens bipinnata. — Blooms August 17-October 2G ; 11 visitors 
observed, August 29 and September 12; Mas, Y. 

Long-tongued Bees (6) — Ap.: Apis sc, fq; Bomh.: Bombus 
americanorum ^; Megachil.: Trypetini : Neotry petes truncatus $; 
Megachilini : Anthemois $, se, Sayapis sayi $ ; Coelioxyini : Coelioxys 
sayi (^. 

Diptera (4) — Syrph.: Syritta; Empid.: Parempis; Tachin.: 
Siphona, Trichophora. 

Lepidoptcra (1) — Papilion.: Pieris. 

Bidens connata. — Blooms September 3-26 ; 2 visitors observed, 
September 22 ; Ma.s, Y. 

Long-tongued Bees (2) — Bomb.: Bombus americanorum <^ $, 
fq. impations $. 

Bidens frondosa. — Blooms August 27-Oct()bcr 2; 11 visitors 
obsen-ed, August 27 and September 11 ; ALis. Y. 

Long-tongued Bees (2) — Ap.: Apis; Bomb.: Bombus impa- 
tiens $. 

Short-tongued Bees (3) — Ilalict.: Odontalictus (^, Oxystoglossa 
confusa $; Collet.: Colletes compaetus (^. 



60 FLOWERS AND INSECTS— XXVI 

Other Hjonenoptera (1) — Sphec: Sphex vulgaris. 
Diptera (4) — Syrph.: Tropidia albistylum ; Bombyli.: Exopro- 
sopa decora ; Tac/im. ; Peleteria, Spallanzania. 
Lepidoptera (1) — Nymphal.: Charidryas. 

Bidens laevis (15: 474).— Blooms August 26-October 17; 52 
visitors observed, September 20, 22 ; Mas, Y. 

Long-tongued Bees (15) — Ap.: Apis ab; Bonib.: Bombias scu- 
tellaris J*, separatus J*, Bombus americanorum J* ^, fq, impatiens 
^; Ceratin.: Ceratina $; Megachil.: Megaehile brevis (^ 5, sc, fq, 
mendica (^, petulans J*, Xanthosarus $, sc; Epeol.: Epeolus autum- 
nalis $, type; Eucer.: Melissodes agilis $, boltoniae $, sc, fq, simil- 
lima (^, trinodis $. 

Short-tongued Bees (4) — Halict.: Chloralictus versatus $, sc, 
Odontalictus J* ; Collet. : Colletes compaetus J* $, sc, fq ; Andren. : 
Pterandrena aliciae $, sc, type. 

Other Hymenoptera (5) — Vesp.: Polistes annularis, pallipes; 
Eumen.: Eumenes fraternus; Scoli.: Scolia bicincta fq; Ichneu- 
mon.: Exetastes suaveolens. 

Diptera (12) — Syrph.: Eristalis dimidiatus ab, transversus ab, 
Helophilus similis, Mesogramma marginata; Bombyli.: Anthrax 
halcyon, Sparnopolius fq, Systoechus; Tachin.: Archytas aterrima 
fq, Siphoplagia anomala; Muse: Compsomyia fq, Pseudopyrellia 
fq; Anthomy.: Hydrophoria. 

Lepidoptera (14) — Nymphal.: Anosia ab, Basilarchia archippus, 
Phyciodes, Vanessa atalanta, huntera ; Lycaen. : Chrysophanus ; Pa- 
pilion.: Eurymus fq; Hesperi.: Atalopedes, Hylephila; Ctenuch.: 
Scepsis; Noctu.: Feltia, Heliothis armiger, dipsaceus, Plusia sim- 
plex. 

Coleoptera (2) — Chrysomel.: Diabrotica 12-punctata f, n; 
Lampyr.: Chauliognathus pennsylvanicus ab. 

Boltonia asteroides (15: 458-9). — Blooms August 8-October 4; 
138 visitors observed, August 25-October 4 ; Mis, W. 

Long-tongued Bees (21) — Ap.: Apis sc, ab; Bomb.: Bombias 
scutellaris J*, Bombus americanorum J* ^, impatiens J* ^, sc; 
Megachil.: Trypetini : Neotrypetes truncatus $, se; Megaehilini: 
Megaehile brevis ^ $, sc, f q, mendica $, 6-dentata $, sc, Xanthosarus 
5, SC; Coelioxyini: Coelioxys 8-dentata J"; Nomad.: Holonomada 
placida J* 5; Epeol.: Epeolus bifasciatus $, pusillus J* $, Triepeolus 
cressonii J* $, fq, pectoralis J* ?, fq; Eucer.: Epimelissodes obliqua 
$, sc, Melissodes asteris 5, sc, autumnalis (^ 5^ sc, boltoniae $, sc, fq, 
type, nivea $, sc, simillima J* $, sc, ab. 



CHARLES no BE HT SOX 61 

Short-tonpupfl Bees (20)— i/a/u7.: Agupostemon radiatus $> 
Chloralictus obscurus (^, pruinosus cf $, sc, sparsus $, sc, versatus 
(^ 9» sc, fq. Ilalietiis parallclus (^, Odontalictus cT ?. ^^> Seladonia $; 
Sphecodini : .Splu't-odiimi cressonii (^ $; Prosupid.: Prosopis pyg- 
maea (^ $, ab, ziziae (^ ; Collet.: Colletes amerieanus (^ $, sc, ab, 
compactus (^, eulophi $; A;»f/rrn.; Pterandreiia solidaginis (^ $, sc, 
fq, in cop; Panurg.: Calliopsis coloradensis cT $. ^c, ab, in cop, 
Perdita cT $. •**<•» ^Q. Perditella boltoniae (^ $, sc, oligolege, type, 
Pseudopanurgus compositarum (^ $, sc, ab, type, solidaginis $, sc. 

Other Ilyinonoptera (Pi) — Sphec: Priononyx tliomae, Sphex 
nigricans, pictipennis; Bemhic: Bembix spiuolae ; Scoli.: Scolia 
bicincta; Philanth.: Cerceris fulvipes; Vesp.: Polistcs variatus; 
Enmen.: Loionotus anormis, clypeatus; Larr.: Astatus unicolor, 
l.arropsis; Ichni umon.: Ccratosoma. 

Diptcra (GO) — Syrph.: Bacdia clavata, Eristalis dimidiatus sf, 
latifrons, Mcsogramina {jeminata, inarKinata sf, polita f, n, Paragus 
tibialis sf, Sphacrophoria sf, Spilomyia longicornis, 4-fasciata, Syr- 
itta sf, ab, Syrphus amerieanus sf ; Empid.: Parempis; Bombyli.: 
Anthrax fulvohirta, Sparnopolius ab, Systocchus, Systropus, Tox- 
ophora; Conop.: Oncomyia, Zodion fulvifrons, nanellum, Robert- 
sonomyia in eop; Tachin.: Alophora aeneoventris, Archytas analis, 
Cistogaster oceidua, pallasii, Epijrrimyia floridcnsis, Euacemyia, 
(Jyinnosoma, llypostcna variabilis, Lcucostoma atra, neomi'xicana, 
Ennyomma globosa, nigrifrons, Ocyptera dosiades, Pat'hy()i)hthal- 
miis signatus, Paradidj'ma, Peletoria, Phorantlia huraeralis, 
magna, purpurascens fq, Senotainia rubriventris, trilineata U\, 
Siphoplagia anomala, Spallanzania f q ; Dexi.: Myocera; Sar- 
cophag.: Ilelicobia helicis, Sarcophaga hunteri, sinuata ; Muse: 
Compsomyia, Graphorayia, Liicilia sericata, Pseudopyrellia, Sto- 
moxys; Anthomy.: Anthomyiella, Calythea, Limnophora, Probos- 
• imyia; Seps.: Sepsis; Trypct.: Trypcta humilis ab. 

Lepidoptera (20) — Nyinphal.: Anosia, Junonia. Phyciodes, 
W'lnessa eardui. liuntera ; Lycaen.: Chrysophanus, Evercs, Ileodes, 
I'ranotes; Papilion.: Eurymus f<|. Pieris. Pontia; Ilesperi.: Ancy- 
loxypha, IIosi)eria, IIyl('i)hila, Limoeliores taumas, Polites; Arcti.: 
rtethei.sa ; Ctentich.: Scepsis; Soctu.: lleliothis armigcr. 

f'oleoptera (4) — Chrynnmrl. (f, f(|, n) : Diabrotiea PJ-punetata, 
U»ngiconiis: CoccineU.: IIii)p(>damea i)arenthesis f, n; Lampyr.: 
Chauliognathus pcnnsylvanicus U\. 

Hemiptcra {\)—Caps.: Lygus fq. 

October 15, 17, the following 40 s{)C(i('s and 1S6 individuals 
were taken as they came to the flowers: 



62 FLOWERS AXD INSECTS— XXVI 

Long-tongued Bees (8: 66) — Ap.: Apis 3; Megacliil.: Mega- 
chile breads 3; Epeol.: Epeolus pusillus 1, Triepeolus cressonii 1; 
Eucer. : Melissodes asteris 2, boltoniae 2, nivea 3, simillima 51. 

Short-tongued Bees (5: 20) — Halict.: Chloralictus versatus 13; 
Panurg. : Calliopsis eoloradensis 1, Perdita 3, Pseudopanurgus com- 
positarum 2, solidaginis 1. 

Other HjTnenoptera (1: 1) — Eumen.: Leionotus anormis 1. 

Diptera (17: 79) — Syr ph.: Eristalis latifrons 3, Mesogramma 
geminata 1, marginata 2, polita 2, Syritta 7; Bomhyli.: Sparnopo- 
lius 39 ; Conop. : Zodion fulvifrons 1 ; Tachin. : Cistogaster oceidua 
1, Phorantha humeralis 5, magna 1, Senotainia rubriventris 5, trili- 
neata 2, Siphoplagia anomala 1, Spallanzania 2; SarcopJiag.: Heli- 
cobia helicis 1 ; Muse. : Graphomjaa 1 ; Anthomy. : Limnophora 5. 

Lepidoptera (6: 9) — Nymplial.: Anosia 1, Phyciodes 3; Papil- 
ion.: 'EuTym.us 2; Hesperi.: Hylephila 1, Limoeliores taumas 1, 
Pontes 1. 

Coleoptera (3: 11) — Chrysomel.: Diabrotica 12-punctata 1, lon- 
gicornis 1 ; Lampyr. : Chauliognathus pennsylvanicus 9. 

Brauneria pallida (15: 465-6 ) .—Blooms May 25-June 30; 38 
visitors observed, May 25-Jiine 21 ; Mas, R. 

Long-tongued Bees (14) — Ap.: Apis sc; Bomh. ($) : Bombias 
auricomus, separatus, Bombus americanorum, Psitliyrus variabilis ; 
Ceratin. : Ceratina $, sc ; Megachil. : Megaehilini : Cypliopyga J*, 
Megachile brevis J* $, mendica $, Sayapis pugnata (^ ; Coelioxyini : 
Coelioxys 8-dentata J*; Xylocop.: Xylocopa ?; Nomad.: Holono- 
mada affabilis J* $, superba $. 

Short-tongued Bees (9) — Halict. ($) : Agapostemon texanus sc, 
Adridulus sc, Chloralictus pilosus, pruinosus, versatus sc, Odontalic- 
tus sc, Oxystoglossa confusa, similis; Panurg.: Pseudopanurgus al- 
bitarsis <^ $, sc. 

Other Hymenoptera (1) — SpJiec: Sphex nigricans. 

Diptera (1) — Tachin.: Spallanzania. 

Lepidoptera (12) — Nymphal.: Anosia, Basilarchia archippus, 
Charidrj^as, Vanessa atalanta, huntera; Lycaen.: Chrysophanus ; 
Papilion. : Eurymus, Papilio, Pontia ; Hesperi. : Limochores taumas, 
Polites ; Sphing. : Hemaris thysbe. 

Coleoptera (1) — Ceramhyc: TjT)ocerus sinuatus f, n. 

Brauneria purpurea (15 : 466) . — Blooms June 16-September 26 ; 
48 visitors observed, July 8-September 14; Mas, R. 

Long-tongued Bees (16) — Ap.: Apis fq; Bomh.: Bombias auri- 
comus c? $, scutellaris ^, separatus J* <^, Bombus americanorum 



CHARLES ROBERTSON 63 

(^ ^, impatiens §, Psithyrus variabilis 9; Ceratm.: Leratina $, sc; 
Megachil.: Osmiini : Ashmeadiella 9- sc; Megachilini : Megachile 
brevis 9t petulans 9. sc, Sayapis sayi ^-^ Eptol.: Triepeolus con- 
cavus 9; Eucer.: Epimelissodes obliqua ^T 9- sc, fq, Meiissodes bi- 
maculata ^ 9- cnici 9- 

Short-tongued Bees (7) — Halict.: Agapostemon viridulus <^ 9» 
sc, Chloralictus pilosus 9- sc, sparsus 9- sc, versatus 9- Evylaeos 
pectoralis 9, sc, Odontalictus 9r sc, fq; Panurg.: Pseudopanurgns 
albitarsis 9. sc. 

Other Hymenoptera (3) — Sphec: Sphex nigricans, procera; 
Larr. : Tach>-tes aurulentns. 

Diptera (9) — Syr ph.: Volucella vesiculosa; Empid.: Parempis; 
Bambyli.: Anthrax halcyon, parvieomis, Exoprosopa decora, fas- 
ciata, Geron rufipes, Systoechus; Conop.: Zodion obliquefasciatum. 

Lepidoptera (13) — Xymphal.: Anosia, Argynnis, Charidryas, 
Euptoieta. Vanessa cardui, huntera; Papilion.: Euphoeades, Eury- 
mus, Jasoniades, Pieris, Pontia; Hespiri.: Hesperia, Thorybes 
bathyllus. 

Cacalia atriplicifolia. — Blooms July 28-September 20; 10 visi- 
tors observed. August 4; Mis, W. 

Short-tongued Bees (2, 9, c) — Halict.: Chloralictus sparsus, 
Odontalictus. 

Other Hymenoptera (7) — Crabran.: Solenius; Oryhtl.: Xota- 
glossa americana, Oxybelus 4-notatus; Philanth.: Philanthus pune- 
tatus; Sphec: Sphex vulgaris; Eumen.: Eumenes fratemus; Scoli.: 
Scolia bicincta. 

Diptera (1) — Empid.: Parempis ab. 

Cacalia reniformis. — Blooms June 25-July 31 ; 39 visitors ob- 
serted. June 2.>-July 16: :Mis, W. 

Long-tongued Bees (5) — Ap.: Apb; Ceraiin.: Ceratina 9» 8C, 
Zaodontomerus o^: JJegachU.: Xeotrypetes truncatus 9- sc; Eucer.: 
Meiissodes bimaculata 9- 

Short-tongued Bees (11) — Halict.: Agapostemon radiatus (j*, 
Augochlora viridula (^ 9- fq.. Chloralictus cressonii c^, sparsus $, 
versatus 9. sc. fq, zephyrus 9- Evylaeus foxii o*- pectoralis (j* $, 
Oxystoglossa pura 9. fq; Prosopid.: Proscpis pygmaea q. sayi o". 

Other Hymenoptera (11^ — Sphec: Sphex gracilis, nigricans, 
vulgaris; Eumen.: Ancistrocerus tigris. fq, Eumenes fratemos, 
Leionotus dorsalis, fundatus fq, perennis, 4-sectus» zixiae; Crabron.: 
Solenius. 

Diptera (9) — Tipul.: Oeranomyia; Syrpk.: Sphaerophoria, 



64 FLOWERS AND INSECTS— XXVI 

Syritta fq; Empid.: Parempis fq; Conop.: Oncomyia, Zodion nanel- 
lum ; Tachin. : Epigrimyia floridensis, Senotainia trilineata, Siphona 

fq. 

Lepidoptera (1) — Sesi.: Sesia 6-fasciata. 

Hemiptera (2) — Caps.: Lopidea fq; Lygae.: Melanoeoryphus. 

Cacalia tuberosa. — Blooms June 17-Jiily 17 ; 5 visitors observed, 
July 4 ; Mis, W. 

Short-tongued Bees (1) — Halict.: Spheeodes arvensis J*. 
Other Hymenoptera (1) — Scoli.: Elis 5-cineta. 
Lepidoptera (2) — Lycaen.: Chrysophanus ; Ctenuch.: Scepsis. 
Hemiptera (1) — Lygae.: Lygaeus. 

Chrysanthemum leucanthemum (int.). — Blooms May 24— 
August 16 ; 22 visitors observed, May 28-June 21 ; Mis, W. 

Long-tongued Bees (6) — Ceratin.: Ceratina $, sc; Stelid.: 
Chelynia J*, Microstelis (^ $, fq; Megachil.: Neotrypetes truncatus 
5, sc, Alcidamea simplex J* ; Nomad. : Centrias amerieanus (^ $. 

Short-tongued Bees (3) — Halict. ($, sc, ab) : Odontalictus, 
Oxystoglossa similis; Panurg.: Calliopsis andreniformis J*, ab. 

Other Hymenoptera (1) — Eumen.: Leionotus ziziae. 

Diptera (11) — Syrph.: Eristalis latifrons, Sphaerophoria, Sy- 
ritta, Tropidia mamillata; Empid.: Parempis fq, type; Conop.: 
Zodion fulvifrons; Tachin.: Distichona varia, Leucostoma atra, 
Phorantha purpurascens ab; Muse: Pseudopyrellia ; Anthomy.: 
Phorbia platura. 

Coleoptera (1) — Scarahae.: Trichius piger f. 

Cirsium altissimum (15: 475). — Blooms July 23-October 23; 
23 visitors observed, August 14-Oetober 23 ; ]\Ias, R. 

Long-tongued Bees (13) — Ap.: Apis sc; Bomb.: Bombias auri- 
comus J* ^, scutellaris ^ ^, Bombus americanorum (^ ^, sc, fq, 
consimilis (^ $, sc, impatiens J* ^, sc, Psithyrus variabilis cT; 
Ceratin.: Ceratina $; Megachil.: Neotrypetes truncatus $, sc, n; 
Epeol.: Triepeolus donatus (^ $; Eucer.: Epimelissodes obliqua $, 
e, Melissodes agilus <^, cnici (^ $, sc, f q. 

Short-tongued Bees (2) — Halict.: Agapostemon viridulus c?, 
Chloralietus sparsus $, c, n. 

Lepidoptera (8) — Nymphal.: Argynnis, Basilarchia archippus, 
Vanessa atalanta; Papilion.: Euphoeades, Heraclides, Jasoniades; 
Sphing.: Deilephila, Hemaris thysbe. 

Cirsium discolor (51:475).— Blooms July 29-October 20; 31 
visitors observed, August 21-October 20 ; Mas, R. 



CHARLES ROBERTSON 



65 



Long-ton^ed Bees (14) — Bomb.: Bombias auricoraus cT $ l?» 
sc, fq, scutt'llaris cT ^. sc, separatus (^ $, Bombus araerieanorum 
<:?$$, sc, ab, impatiens $ $, sc, Psithyrus variabilis (^ $, ab; 
Megackil.: Xanthosarus <^ $, sc, fq; Epeol: Triepcolus concaviis 
(^ $; Eucer.: Epimelissodcs obliqua (^ $, sc, ab, Melissodos agilis (^, 
cnici cT 9, St', ab, coloradensis 5, sc, variabilis (;^; Emphor.: Meli- 
toma $. 

Sliort-ton<;iied Bees (5, 9, c, n) — IlnlUl.: Cliloralicfus i)rui- 
nosus, sparsus, versatus, Odontalictus; Collet.: Collctcs eulophi. 

Diptera (2) — Bomhyli.: Exoprosopa fasciata, Systoechus. 

Lepidoptera (9) — Nymphal: Anosia, Arg:ynnis, Speyeria, Va- 
nessa cardui ; Papilion.: Cnllidryas, IToraclidos, Papilio; Sphing.: 
Deilephila, llemaris thysbe. 

Colooptcra (1 ") — ChnjsomcL: Diabrotica loii'rif'ornis f, n. 

Cirsium lanceolatum (iiit, 15: 475-6). — Blooms June 24-Octo- 
bcr 27 ; 48 visitoi*s obsei-ved, July 3-October 27 ; Mas, R. 

Long-tongued Bees (25) — Bomb.: Bombias auricomus $, sepa- 
ratus cT $. fq. Bombus americanoi-um <^ $ $, sc, ab, in cop, con 
similis $, impatiens ^, fq, Psithyrus laboriosus (^, variabilis ^ 
Megachii: Mcgachile 6-dcntata (^, type, Xanthosarus $, sc, fq 
Epcol.: Triepcolus conca^'Us ^, concolor (^ $, fq, donatus <^, neva 
densis ^, rcmigatus $; Eiiccr.: Epimelissodcs obliqua J* $, fq, Melis- 
sodcs agilis (^, bimaculata $, cnici J* $, sc, ab, in cop, type, colo 
radensis (^, comptoidcs (^ $, simillima (^, trinodis $, variabilis $ 
Emphor.: Emphor (^; Anthophor.: Amej^illa (^. 

Short-tongued Bees (6) — Halict.: Agopostemon radiatus J* 
texanus $, sc, viridulus (^ $, sc, Chloralictus pilosus $, c, n, Odon 
talictus $, c, n; Nomi.: Paranomia $. 

Diptera (3) — Bombyli.: Exoprosopa fasciata, Systoechus fq 
Conop.: Physocephala tibialis. 

Lopidoptera (14) — Nymphal.: Anosia, Phyciodes. Speyeria 
Papilimi.: Euphoeadcs, Eurymus, Jasoniades, Papilio, Pontia 
Xanthidia ; Hcsperi.: Atrytone zabulon, Limochores taumas fq 
Polites, Thorybes bathyllus; Ctcnuch.: Scepsis. 

Cirsium pumilum — Blooms May 25-June 29; 17 visitoi-s ob- 
ser\e<l, May 29, June 26; Mas, R. 

Long-tongued Bees (4, $) — Bomb.: Bombus amcrieanorum, 
Psithyrus variabilis; Megachii: Cyphopyga sc, Sayapis i)Ugnata so. 

Short-tongued Bees (1) — Ilalict.: Jilvylaeus pectoralis $, c, n. 

Lepidoptera (9) — Nymjthal.: Anosia, Argynnis ab, Speyeria; 
Papilion.: Euphoeadcs, F^urymiis, Ileraclides, Laertias; Ilesperi.: 
Polites, Thor>bes balhyllus. 



66 FLOWERS AND INSECTS— XXVI 

Coleoptera (2, f, n) — Cerambyc: Typocerus sinuatus; 
Scardbae.: Trichius piger gn, in cop, ab, 
Hemiptera (1) — Lygae.: Lygaeus. 

Coreopsis palmata (15:472). — Blooms June 3-July 24; 116 
visitors observed, June 6--July 2 ; Mas, Y. 

Long-tongued Bees (33) — Ap.: Apis sc; Bomb.: Bombus ameri- 
canorum 5 ^ ; Ceratin. : Ceratina $, sc, f q ; Stelid. : Anthidium cog- 
natum ^, Microstelis $; Megaehil.: Trypetini: Neotrypetes trun- 
catus <^ $, SC; Osmiini: Alcidamea simplex $, Ashmeadiella (^ 5, 
Gnathosmia 5, sc ; Mcgachilini : Chelostomoides J*, Cyphopyga J*, 
Megachile addenda c^, brevis (^ $, sc, ab, in cop, mendica J* $, petu- 
lans ^, 6-dentata cf $, sc, Sayapis pollicaris J* 5, sc, pugnata J* $, se, 
fq, Xanthosarus $; Coelioxyini: Coelioxys 8-dentata J* $, ab, sayi 
(^ 2 ; Nomad. : Centrias americanus $, erigerontis J* ?, Holonomada 
superba $ ; Pasit. : Holcopasites illinoensis J* ?, f q ; Epeol. : Epeolus 
bifasciatus c^, interruptus (^ $; Melect.: Melecta J*; Eucer.: Melis- 
sodes agilis J*, boltoniae $, sc, coreopsis J* $, sc, fq, oligolege, type, 
petalostemonis $, ab, trinodis $, sc. 

Short-tongued Bees (21) — Halict.: Agapostemon radiatus $, sc, 
texanus $, viridulus $, Augochlora fervida $, Chloralictus coreopsis 
J* $, sc, f q, type, obscurus J*, pilosus cf $, sc, f q, pruinosus (^ ?, sc, 
tegularis (^, versatus J* 5, sc, ab, Evylaeus arcuatus $, sc, foxii J*, 
pectoralis <^ $, sc, Halictus lerouxii J* 5, sc, Odontalictus (^ $, sc, f q, 
Oxystoglossa confusa (^ 5, similis J^ $, sc, Seladonia J* $, so; 
AwcZrew.; Pterandrena rudbeckiae (^ ?; Panurg.: Calliopsis andreni- 
formis (^ 5, ab, Pseudopanurgus albitarsis <^ $. 

Other Hymenoptera (14) — Sphec: Priononyx atrata, thomae, 
Sphex pictipennis, nigricans, procera, vulgaris; Bemhic: Bembix 
spinolae, Bicyrtes ventralis, Stictiella; PhilantJi.: Cerceris promi- 
nens; Eumen.: Leionotus anormis, arvensis, histrionalis ; Bracon.: 
Toxoneuron abdominale. 

Diptera (30) — Stratiomy.: Odontomya nigrirostris ; Syrph.: 
Eristalis flavipes, latifrons, tenax, transversus, Helophilus latifrons, 
Mesogramma marginata, Sphaerophoria, Syrphus ribesii ; Bomhyli. : 
Anthrax parvicornis, Exoprosopa decora, emarginata, Geron rufipes, 
Systoechus, Thripsogaster fq, Toxophora; Conop.: Oncomyia, 
Physocephala tibialis, Zodion fulvifrons ; Tachin. : Archytas analis, 
Euphorocera claripennis, Linnaemyia, Oeyptera lata, Peleteria, 
Spallanzania ; Muse: Lueilia caesar, Pseudopyrellia, Stomoxys; 
Anthomy.: Proboscimyia ; Agromyz.: Eusiphona. 

Lepidoptera (14) — Nymphal: Argynnis, Phyciodes, Vanessa 
huntera; Lycaen.: Uranotes; Papilion.: Euphoeades, Eurymus, 



CHARLES liOh'EJiTSny 67 

Pieris, Pontia; Ilesperi.: Atrytouc zabulon, Limochores taumas, 
Pholisora eatullus, Thanaos juvenalis; Ctcniich.: Scepsis; Nodu.: 
Plusia simplex. 

Coli'optera (4) — Ceramhyc: Typocerus sinuatus f, n; Melo.: 
Epicauta einerea f, n; Mordell.: Mordella marginata, seutcl- 
laris f, n. 

Coreopsis tripteris (15:472-3). — Blooms July 23-September 
26; 53 visitors and 185 individuals observed, August 12-September 
3 ; Mas, Y. 

Long-tongued Bees (18:83) — Ap.: Apis se, 1; Bomb.: Bombus 
americanorum <^ ^, 13, impaticns $, 1; Ccratin.: Ccratina $, sc, 5, 
Megachil. ($) : Cyphopyga 1, Megachile brevis se, 1, petulans sc, 9; 
EpeoL: Epeolus pusillus $, 1, Triepeolus coneavus $, 1, donatus 
$, 1, lunatus (^, 1; Eucer.: Epimelissodes obliqua $, sc, 32, Melis- 
sodes agilis (^ $, 2, autumnalis (^, 2, coloradensis $, sc, 1, nivea 
c^, 1, similliraa (^ $, 4, trinodis (^, 6. 

Short-tongued Bees (12: 31) — Ilalict.: Augochlora fervida c^, 1, 
Chloralietus coreopsis $, sc, 1, pilosus $, 1, tegularis $, sc, 1, ver- 
satus 5, se, 1, Curtisapis coriacea c?, 2, EN-ylaeus pcctoralis $, 1, 
Odontalictus $, sc, 13; Andren.: Pterandrena pulchella ^ $, sc, 4; 
Panurg.: Calliopsis coloradensis $, sc, 1, Pseudopanurgus labrosi- 
formis <^ $, type, 2, solidaginis <^, 3. 

Other Hj-menoptera {\0:'i2)—Sp}iec.: Sphex gracilis 3, nigri- 
cans 2, pictipennis 2, procera 7, vulgaris 2; Bemhic: Bicyrtes ven- 
tralis 2; Scoli.: Scolia bicincta 9; Philanth.: Philanthus punctatus 
1 ; Eintien.: Leionotus anormis 1, ar\'ensis 2. 

Diptera (9:34) — Syrph.: Pipiza nigribarba f, 1, Syritta 2; 
Bomhyli.: Anthrax halcyon 4, Lepidophora 1, Sparnopolius 18, 
Systoeohus 4; Conop.: Zodion obliquefasciatum 1; Tachin.: Epi- 
grimyia geniculata 1, Siphoplagia anomala 2. 

Lepidoptera (3:4) — Nymphal.: Anosia 1, Phyci(xlcs 1; 
Ilesperi.: Limochores taumas 2. 

Coleoptera (1 : 1) — Lampyr.: Chauliognathus penn.sylvanicus 1. 

Ercchthites hicracifolia, — Blooms August 20-September 25; 
13 visitors obsened, August 29-September 16 ; Mis, Y. 

Long-tongued Bees (2) — Ap.: Apis ab; Megachil.: Megachile 
brevis $. 

Short-tongued Bees (1) — Ilalict.: Agapostcmon radiatus 9- 

Other Hjinenoptera (8) — Scoli.: Elis 5-cincta; Vetp.: Polistes 
pallipes, variatus, Vespula germanica ; Eumen.: Ancistrocerus 
capra, Leionotus arvonsis, Zolhus; Pompil.: Arachnoproctonus. 



68 FLOWERS AND INSECTS— XXVI 

Diptera (1) — Tachin.: Archytas aterrima. 
Lepidoptera (1) — Lycaen.: Chrysophanus. 

Erigeron annuus. — Blooms May 26-September 15; 2 visitors 
observed, June 2 and 15 ; Mis, W. 

Long-tongued Bees (1) — Megachil.: Neotrypetes truncatus $. 
Diptera (1) — Tachin.: Apinops. 

Erigeron canadensis. — Blooms August 16-October 29; 18 vis- 
itors observed, September 1, October 29 ; Mis, W. 

Long-tongued Bees (1) — Epeol.: Epeolus pusillus J*. 

Short-tongued Bees (1) — Halict.: Chloralictus versatus $, sc. 

Other Hymenoptera (7) — Philanth.: Cerceris clypeata, Eucer- 
ceris; Vesp.; Polistes variatus; Eumen.: Ancistroeerus tigris; 
Crabron.: Anacrabro; Larr.: Taehytes elongatus; Ichneumon.: 
Ceratosoma. 

Diptera (9) — Syrph.: Eristalis tenax, Mesogramma marginata, 
Syritta; Conop.: Oncomyia; Tachin.: Ocyptera lata, Senotainia 
trilineata; Sarcophag.: Helicobia helicis; Muse: Musca, Pollenia, 
Pseudopyrellia. 

Erigeron philadelphicus (15:461). — Blooms April 23-June 
13; 64 visitors observed, May 14-June 5; Mis, W. 

Long-tongued Bees (12) — Ap.: Apis; Bomb.: Bombias sep- 
aratus $; Ceratin.: Ceratina J* $, se, ab, Zaodontomerus <^, fq; 
Stelid. : Microstelis (^, fq ; Megachil. : Trypetini : Neotrypetes trun- 
catus (^ ; Osmiini : Alcidamea simplex J* $, Gnathosmia 5, sc ; 
Megachilini: Megachile brevis (^; Nomad.: Centrias americanus 
(^ 5, ab, Holonomada superba J*, Nomada cressonii J*. 

Short-tongued Bees (14) — Halict. ($) : Agapostemon viridulus, 
Chloralictus albipennis, pilosus sc, sparsus, versatus sc, fq, Curtis- 
apis coriacea sc, Evylaeus pectoralis sc, fq, Odontalictus sc, ab, 
Oxystoglossa confusa, similis sc, Seladonia sc, fq; Sphecodini: 
Sphecodium cressonii; Prosopid.: Prosopis pygmaea cf; Andren.: 
Trachandrena mariae $. 

Other Hymenoptera (5) — Sphec: Sphex vulgaris; Eumen.: 
Leionotus anormis ab, clypeatus ab, foraminatus, illinoensis type. 

Diptera (20) — Syrph.: Mesogramma marginata, Paragus bi- 
color, tibialis, Sphaerophoria ; Bomlyli.: Aldrichia f, fq, Conop.: 
Oncomyia, Zodion fulvifrons fq; Tachin.: Apinops atra type, Cis- 
togaster occidua ab, pallasii, Epigrimyia floridensis, Leucostoma 
atra, Phorantha purpurascens, Siphona; Sarcophag.: Helicobia 
helicis, Sarcophaga cimbicis, sinuata; Muse: Pseudopyrellia; 
Anthomy.: Calythea, Phorbia platura. 



CHARLES ROBERTSON 69 

Lppidoptera (7) — NymphuL: Phyciodes; Lycaen.: Chryso- 
plianus; Papilioii.: Xanthidia ; Ilesptri.: Ancyloxypha, Liniochores 
taumas, Pulites; Ctenuch.: Scepsis. 

Coleoptera (3, f, n) — ChrysomcL: Diabrotica 12-punctata; 
lAimpyr.: Telcphorus flavipes; Scarahae.: Trichius pij^cr ab. 

ilcmiptera {W) — licryt.: Corizus; Caps.: Calueoris, Lyg:us. 

Erigeron pulchellus. — Blooms April 27-June 7 ; 5 visitoi-s 
observed, May 4; Mis, W. 

Lonj?-ton<?ued Bees (2) — Ceratin.: Ceratina (^; Nomad.: Cen- 
trias amerieanus $. 

Siiort-ton;j:ued Bees (1) — JIalict.: Odontalictus $, so. 

Lepidoptera (2) — Lycaen.: Everes; Hesperi.: Thanaos juvenalis. 

- Erigeron ramosus (15:461-2). — Blooms May 17-.September 
15; 78 visitors observed. ^lay 31-July 13; Mis, W. 

Lonf^-toiiprued Bees (12) — Ap.: Apis; Ceratin.: Ceratina c^ $, 
8c, l"q, Zaotlontoraerus c^; Stelid.: Microstelis (^ $, fq, Stelidium ^T, 
fq; Megachil.: Neotrypetes produetus (^, truncatus (^ $, sc, ab; 
Nomad. ($) : Centrias amerieanus, erigerontis, type, Nomada dentic- 
ulata; Pasit.: Holeopasites illinoensis cT ?. ^^.i Epeol.: Epeolus 
bifaseiatus (^. 

Short-tongued Bees (16) — Ibdict.: Chloralictus albipennis $, 
so, fq, pniinosus $, sc, sparsus $, sc, tegiilaris $, sc, versatus ($ $, 
sc, zephyrus ^, Evylaeus pectoralis $, sc, Odontalictus $, sc, fq, 
Oxj'stoglos.sa similis $. sc, ISeladonia $, sc, fq ; Sphecodini : Machaeris 
stygia $, Sphecodium cressonii $; Prosopid.: Prosopis eulophi J*, 
pygmaea $, ziziae $; Collet.: Colletes eulophi (^. 

Other Uymenoptera (10) — Sphec: Sphex pietipennis; Philanth.: 
Cerceris clypeata; Eumen.: Leionotus anormis f q, ^clypeatus, his- 
trionali-s, ziziae; Oxyhel.: Notoglos.sa frontalis; Chrysid.: Tetra- 
chrysis montana; Chalcid.: Leucospis; Bracon.: Bracon longicauda. 

Diptera (36) — Syrph.: Eristalis dimidiatus, latifrons, Meso- 
gramnia geminata, marginata fq, Paragus bicolor. tibialis, Si)hae- 
rophoria. ISyritta, Troi)idia mamillata; Empid.: Parempis; 
liomhyli.: Pximbyiius atrieeps, Exoprosoi)a fa.seipennis. Oncodoeera, 
Toxophora ; Conop.: Zodifjn fulvifrons; Tachin.: Ai)inops, Ci.sto- 
gaster occidua, pallasii, Ei)igrimyia polita, Oymnosoma, Leucostoma 
atra, Ocyptera nigra, tenuis, Pachyophtiialnuis floridensis, Phor- 
antha humeralis fq, purpura.scens, Senotainia rubriventris fq, tri- 
lineata, Siphona; Sarcophag.: Helicobia helicis, Sarcophaga cini- 
bicis; Muse: Pseudopyrellia ; Anthomy.: C'alythea, Linino[)hora, 
Phorbia platura; Agromyz.: Lobioptera. 



70 FLOWERS AND INSECTS— XXVI 

Lepidoptera (1) — Lycaen.: Chrysophanus. 
Coleoptera (2, f, n) — Malach.: Collops; Mordell.: Mordellistena 
comata. 

Hemiptera (1) — Caps.: Lygus ab. 

Eupatorium altissimum. — Blooms July 22-October 5; 79 vis- 
itors observed, August 25-September 24 ; Mis, W. 

Long-tongued Bees (9) — Ap.: Apis fq; Bomb.: Bombias scutel- 
laris c^, Bombus americanorum $, impatiens (^ ^ ; Ceratin. : Ceratina 
$ ; Nomad. : Nomada vicina J* $, ab ; Epeol. : Triepeolus donatus cf , 
pectoralis cf, fq; Eucer.: Melissodes simillima J* 5, fq. 

Short-tongued Bees (13) — Ealict.: Augochlora fervida c^, viri- 
dula c?, Chloralictus illinoensis J*, sparsus J*, versatus cf, zephyrus 
J*, Odontalictus J* $, Oxystoglossa similis $, Seladonia ?; Prosopid.: 
Prosopis ziziae 5; Collet.: Colletes americanus (^; Andren.: Pteran- 
drena asteris J* $, f q ; Panurg. : Perdita J*. 

Other Hymenoptera (25) — SpJiec: Isodontia apicalis, Sphex 
nigricans fq, proeera; Bemhic: Bicyrtes ventralis, Megastizus; 
8coU.: Elis interrupta, 5 eincta, Scolia bicincta fq; Philanth.: 
Eucerceris, Philanthus ventilabris; Vesp.: Polistes annularis, pal- 
lipes, variatus; Eumen.: Aneistroeerus campestris, tigris, Eumenes 
fraternus, Leionotus foraminatus, Zethus; Crahron.: Protothyre- 
opus bigeminus; Oxyhel.: Oxybelus paekardii; Larr.: Larropsis fq; 
Pompil. : Lophopompilus pbiladelphicus, Priocnemoides f ulvicornis ; 
Chrysid.: Hedyehrum wiltii; Ichneumon.: Ceratosoma. 

Diptera (25) — Syrph.: Milesia, Spilomyia longicornis, Syritta; 
Empid.: Parempis; Bomhyli.: Anthrax hypomelas, Exoprosopa 
faseiata, Sparnopolius, Toxophora; Conop.: Conops xanthopareus, 
Oneomyia; Tachin.: Actia, Alophora fumosa, Archytas analis, 
aterrima, Cistogaster pallasii, Leskiomima secunda, Linnaemyia, 
Ennyomma globosa, Phorantha asteris, Senotainia trilineata, Spal- 
lanzania; Muse: Compsomyia, Graphomyia, Morellia, Pseudo- 
pyrellia. 

Lepidoptera (6) — Nymphal.: Charidryas, Euphydryas, Phy- 
ciodes; Papilion.: Pontia; Hesperi.: Limochores taumas, Polites; 
Ctenuch.: Scepsis. 

Coleoptera (1) — Scarabae.: Euphoria sepulchralis. 

Eupatorium coelestinum. — Blooms July 4-September 22; 26 
species and 80 individuals observed, September 16, 17, 22 ; Mas, R. 

Long-tongued Bees (6:11) — Ap.: Apis 1; Bomb.: Bombus 
americanorum ^, sc, 3, Psithyrus variabilis (^, 1; Ceratin.: Ceratina 
5, 1; Megachil.: Megachile mendica $, sc, 3; Eucer.: Melissodes 
bimaculata $, sc, 2. 



CHARLES ROBERTSON 71 

Short-tongued Bees {5 :l)—IIalict.: Augoohlora viriilula $, sc, 
1, Chloralictus sparsus $, 1, Odontalictus (^ $, sc, 3, Oxystoglossa 
confusa <^, 1, similis $, sc, 1. 

Other Ilymenoptera (1:2) — Sphec: Sphex nigricans 2. 

Diptera (5: 12) — Syrph.: Mesogramma geminata f, 4; Bomhyli.: 
Sparnopolius 1; Tachin.: Siphoplagia aiioinala 5; Dexi.: Ptilodexia 
1 ; Muse: Stomoxys 1. 

Lepidoptera (8:47) — Nymphnl.: Aiiosia :{, liasilarcliia arcliip- 
pus 1, Phyeiodes 8; Papilion.: Eurymus 12; Ilcspcri.: Euphyes 
metacomet 12, Limochores taumas 2, Polites 5; Ctenuch.: Scepsis 4. 

Coleoptera (1 : 1) — Lampyr.: Chauliognathus pennsylvanicus 1. 

Eupatorium perfoliatum (15: 453).— Blooms July 16-Septem- 
ber 23; i)S visitors observed, August 13-8eptember 11; Mis, W. 

Long-tongued Bees {6)—Ap.: Apis f q ; Bomb.: Bombias scutel- 
laris 5, separatus (^, Bombus impatiens 5; Megachil. {% c) : Mega- 
chile brevis, mendica. 

Short-tongued Bees (8)— 77(;//V/.; Augochlora fervida <^, Ilalic- 
tus lerouxii cT, Odontalictus $, sc, fq, Oxystoglossa similis $ ; Spheco- 
dini: Sphecodium pimpinellae (^ ; Prosopid.: Prosopis pygmaea c^, 
ziziae c^; Collet.: CoUetes eulophi (^. 

Other Ilymenoptera (44) — Sphcc: Ammobia ichneumonea, 
nuda, Isodontia apicalis. Sceliphron, Sphex gracilis, nigricans fq, 
procera, vulgaris; Bemhic: Megastizus; Scoli.: Elis interrupta ab, 
5-cincta fq, Scolia bicincta ab; Philanth.: Cerceris clypeata, promi- 
nens, Eucerceris ab, Philanthus punctatus; Vesp.: Polistes annu- 
laris, pallipes, rubiginosus. variatus, Vespula germanica, maculata; 
Eumcn.: Ancistrocerus campestris, capra, tigris ab, Eumenes fra- 
ternus, Leionotus anormis, foraminatus; Crahron.: Anacrabro, Hy- 
pocrabro, Protothyreopus bigeminus, nififemur, Solenius fq, Syno- 
thyreopus; Oxyhel.: Notoglossa americana, frontalis; Larr.: 
Larropsis ab, Tachysphex acutus, Tachytes elongatus; Chrysid.: 
Iledychrum violaceum, wiltii; Chalcid.: Perilampus cyaneus; 
Ichneumon.: Ceratosoma, Porizon albipennis. 

Diptera {27)—Stratiomy.: Neraotelus; Syrph.: Chilosia punc- 
tulata, Mesogramma marginata, polita, Spiloinyia longicornis, 
Syrphus ribesii ; Einpxd.: Parempis; Bomhyli.: Exoprosopa fasciata, 
Sparnopolius; Conop.: Conops xanthopareus. Oncomyia; Tachin.: 
Archytas analis fq, aterrima, hystrix, Cistogaster oeeidua, Cly- 
tiomyia, Ennyomraa globosa, Siphoplagia anomala, Xanthomelana; 
Sarcophag.: Ilelicoba helicis, Sarcophaga assidua ; Muse: Comp- 
Bomyia, Lucilia caesar, Phormia regiua, Pseudopyrellia, Stomoxys; 
Anthomy.: Lispa albitarsis. 



72 FLOWERS AND INSECTS— XXVI .■ 

Lepidoptera (7) — Nymphal.: Anosia, Phyciodes; Papilion.: 

Eurymus; Hesperi.: Ancyloxypha, Pamphila dion; Ctenuch.: ; 

Scepsis; Noctu.: Drasteria erechtea. i 

Coleoptera (6) — Chrysomel.: Ceratoma fq; Curculion.: Cen- | 

trinus scutellum album ; Lampyr. : Chauliognathus pennsylvanieus ; j 

Melo.: Epicauta pennsylvanica f, n; Rhipiphor.: Rhipiphorus lim- I 
batus; Scarahae.: Euphoria sepulchralis. 

Eupatorium purpureum (15:452). — Blooms July 17-Septem- i 

ber 3 ; 20 visitors observed, August 4-September 9 ; Mas, R. \ 

Long-tongued Bees (5) — Ap.: Apis fq; Bomh.: Bombias auri- ! 

comus ^, Bombus impatiens ^, fq; Eucer.: Melissodes agilis <^, j 

bimaculata $. j 

Other Hymenoptera (2) — Sphec: Sphex proeera; Vesp.: \ 

Polistes rubiginosus. j 

Diptera (3) — Syrph.: Volucella vesiculosa f ; Bomhyli.: Exopro- , 

sopa fasciata, Systoechus. ; 

Lepidoptera (10) — Nymphal.: Anosia, Charidryas, Vanessa * 

huntera; Papilion.: Eurymus, Jasoniades, Laertias, Pieris, Pontia; ', 

Hesperi. : Pholisora hayhurstii, Polites. j 

Eupatorium serotinum (15:452-3). — Blooms August 2-Oeto- j 

ber 6 ; 132 visitors observed, August 14-September 19 ; Mis, W. | 

Long-tongued Bees (21) — Ap.: Apis sc, ab; Bomb.: Bombias ^ 

scutellaris J* ^, sc, separatus J*, Bombus americanorum J* ^, con- \ 

similis $, sc, impatiens J* $, sc, fq, Psithyrus variabilis J*; Mega- i 

chil.: Trypetini: Neotrypetes truncatus J* $, sc, fq; Megachilini: ; 

Megachile brevis J* $, mendica $, sc, Xanthosarus $; Coelioxyini: 1 

Coelioxys 8-dentata cf, sayi <^; Epeol.: Epeolus bifasciatus $, Tri- ' 

epeolus cressonii <^ $, lunatus $, pectoralis J*; Eucer.: Melissodes j 

autumnalis J* $, boltoniae $, sc, nivea $, sc, simillima J*. ! 

Short-tongued Bees (11) — Halict.: Agapostemon radiatus $, i 

viridulus J*, fq, Chloralictus sparsus cf, fq, zephyrus J', Curtisapis I 
coriacea J* $, sc, Evylaeus pectoralis c^, Odontalictus J* 5, Oxysto- 

glossa confusa $; Sphecodini: Sphecodium pimpinellae cf; Collet.: ' 

Colletes compactus J* $, eulophi J* $, sc, f q. ] 

Other Hymenoptera (44) — Sphec: Isodontia apicalis, macro- j 

cephala, Sceliphron, Sphex gracilis, nigricans fq, pictipennis, pro- | 

eera, vulgaris; Bemlic: Bicyrtes 4-fasciata; 8coli.: Elis 5-cincta, | 

Scolia bicincta; Philanth.: Cerceris fulvipes fq, prominens, Eucer- . 

ceris, Philanthus punctatus, ventilabris; Vesp.: Polistes annularis, ; 

pallipes, rubiginosus, variatus, Vespula germanica ; Eumen. : Ancis- ; 

trocerus campestris, capra, tigris, Eumenes fraternus, Leionotus j 



CHARLES ROBERTSON 73 

arvensis, dorsalis, foruminatus, scrophulariat', Monobia; Crabrun.: 
Hypocrabro, Protothyreopus bigeminus, Pseudocrabro, Syno- 
thyreopus; Larr.: Larropsis ab; Pampil.: Anoplius illinoensis, 
Pompiloides martjinatus; Tiphi.: Tiphia robertsoni; Chrysid.: 
Gonochrysis, Ilcdycliruiu violaceum, wiltii; Ichneumon.: Cerato- 
soma, Porizon albipcnnis; Hracon.: Toxoneuron viator. 

Diptera (34) — Tahnn.: Chrysops striatus; Syrph.: Chilosia 
punc'tulata, Eristalis tenax, Milt'sia, Orthoncura nitida, Spiloinyia 
longicornis; Bomhyli.: Anthrax alternata, Exo{)rosopa fasciata, 
fascipennis, Geroii rufipes, Sparnopolius, Systoechus, Systropus; 
Conop.: Conops xanthopareus, Physocei)hala texana, tibialis, Stylo- 
gaster biannulata; Tachin.: Archytas aterrima, Belvosia bifasciata, 
Cistogaster occidua, Euplioroccra claripennis, Gymnosoma, Lt'skia, 
Ennyomma nigrifrons, Xeofischeria, Ocyptera tenuis, Siplioplagia 
anomala, Spallanzania, Trichopoda pennipes, Xanthonu'lana ; 
Sarcophag.: Ilelicobia hclicis; Muse: Compsomyia, Alu.sca, Pseudo- 
pyrellia. 

Lepidoptera (15) — Xymphal.: Argj'nnis, Phyciodes, Vanessa 
cardui ; Lj/c«€n. : Chrysophanus, p]vercs; Papilum.: Eurj-nius, 
Pieris, Pontia; Hesperi.: Atalopedes, Epargyreus, Limochores tau- 
mas fq; Ctenuch.: Scepsis; Noctu.: Feltia, Spragueia; Sesi.: Car- 
menta. 

Coleoptera (6) — Ceramhyc. (f, n) : Cyllene decorus, robiniae; 
ChrysomeL: Diabrotiea 12-punctata ; Lampyr.: Chauliognathus 
pennsylvanicus ; lihipiphor.: Rhipiphorus limbatus; Scarahai.: 
Euphoria sepulchralis. 

Hemiptcra (1) — Pentatom.: Euschistus variolarius. 

Eupatorium sessilifolium. — Blooms August 2-September 11; 
8 visitors obsened, August 25, September 11; Mis, W. 

Other Ilymenoptcra (6) — Sphcc: Sphex procera ; Scoli.: Scolia 
bicincta; Philanth.: Philanthus punctatus iq; Vesp.: Polistes rubig- 
inosus; Eumrn.: p]unu'n('s fraternus, Monobia. 

Diptera (1 ) — Tachin.: Archytas analis. 

Lepidoptera (1) — Lycaen.: Everes. 

Eupatorium urticaefolium (15: 453).— Blooms July 31-Octo- 
bcr 13: 23 visitors observed, September 2-17; Mis, W. 

Long-tongued Bees (3) — Ap.: Apis sc, ab; Mryachil.: Megachile 
mendica $, .sc, Xantho.sarus $, c. 

Short-tongued Bees (4) — Ilalicl.: Chloralictus sparsus $, Odon- 
talictus cT $, sc, fq, Oxystoglossa confu.sa $, Seladonia (^. 

Other Ilymenoptcra (5) — Scoli.: Scolia bicincta; Vesp.: Ves- 
pula germanica, maculata ; Eumen.: Ancistroceru.s tigris; Larr.: 
Larropsis. 



74 FLOWERS AND INSECTS— XXVI 

Diptera (9) — Syr ph.: Allograpta, Rhingia, Spilomyia longi- 
cornis, Syrphus ribesii; Bombyli.: Exoprosopa fasciata; Tackin.: 
Cistogaster occidua, Paradidyma; Dexi.: Ptilodexia; Muse: Pseu- 
dopyrellia. 

Lepidoptera (2) — Lycaen.: Cyaniris; Ctenuch.: Scepsis. 

Gnaphalium polycephalum. — Blooms August 8-October 17; 70 
species and 196 individuals observed, September 20-29; Mis, W. 
Long-tongued Bees (1:1) — Ap.: Apis 1. 
Short-tongued Bees (13:64) — Halict.: Augochlora viridula $, 

1, Chloralictus obscurus J*, 4, pilosus $, 1, sparsus $, 3, versatus 
J* ?, 15, Odontalictus ^ $, sc, 11, Oxystoglossa confusa ?, 1, similis 
J* $, 8, Paralictus platyparius c^ $, 9, Seladonia $, 2 ; Prosopid. : 
Prosopis ziziae $, 2 ; Collet. : Colletes americanus J* $, 3 ; Andren. : 
Pterandrena solidaginis J* 5, 4. 

Other Hymenoptera (30:63) — Sphec: Sphex gracilis 1, picti- 
pennis 1, vulgaris 1; Philanth.: Cerceris clypeata 1, compacta 1, 
finitima 3, fulvipes 1; Vesp.: Polistes annularis 2, pallipes 1; 
Eumen^.: Leionotus anormis 1, arvensis 1, clypeatus 17, histrionalis 
3, illinoensis 1, molestus 1; Crahron.: Ectemnius 1, Solenius 2, 
Xestocrabro texanus 2, trifasciatus 1; Oxyhel.: Notoglossa fron- 
talis 1 ; Larr. : Larropsis 1 ; Pompil. : Lophopompilus philadelpMcus 

2, Pompiloides americanus 3, marginatus 1, subviolaceus 2; 
Chrysid. : Gonochrysis 1, Holopyga 3, Tetrachrysis venusta 2 ; 
Ichneumon. : Metopius polycinctorius 3 ; Bracon. : Chelonus 2. 

Diptera (22: 54) — Syrph.:Fara.gus tibialis 1, Syrittal; Conop.: 
Oncomyia 1 ; Tachin. : Distichona varia 3, Euphorocera claripennis 
1, Frontina arcliippivora 1, Gymnosoma 1, Hypostena barbata 1, 
Ocyptera lata 1, Pachyophtlialmus signatus 2, Paradidyma 1, Seno- 
tainia rubriventris 1, Siphoplagia anomala 1, Spallanzania 3, Stur- 
mia phyciodis 2, Trichophora 2; Sarcophag.: Helicobia helicis 20, 
Sareophaga cimbicis 1 ; Muse. : Compsomyia 1, Lucilia caesar 2, 
Musca 1, Pseudopyrellia 6. 

Lepidoptera (3:9) — Nymphal.: Phyciodes 3; Hesperi.: Atalo- 
pedes 3 ; Ctenuch. : Scepsis 3. 

Coleoptera (1: 5) — Lampyr.: Chauliognathus pennsylvanicus 5. 

Helenium autumnale (15:474-5). — Blooms August 16-Octo- 
ber 22 ; 35 visitors observed, September 15-23 ; Mas, Y. 

Long-tongued Bees (15) — Ap.: Apis sg; Bomh.: Bombias scu- 
tellaris (^, separatus $, Bombus americanorum J* ^, fq, impatiens 
cf ^, ab; Megachil. ($) : Megachilini: Megachile brevis sc, ab, men- 
dica sc, Xanthosarus; Coelioxyini: Coelioxys 8-dentata; Epeol.: 



CHARLES ROBERTSON 75 

Triepeolus cressouii $, ab; Eucer.: Epimelissodcs obliqua $, Melis- 
sodes agilis ^, boltoniae $, se, ab, simillima $, sc, type, trinodis % sc 

Short-tong:ued Bees {3)—IIalict.: A}?apostemoii viridulus c^, 
Seladonia $, sc; Collet.: Colletcs compactus $, sc. 

Other Hymcnoplera {1)—Sphcc.: Priononyx atrata, Sphex 
nigricans, proeera; Bcmbic: Bembix spinolae, Bicyrtes vcntralis 
fq; Vesp.: Polistes variatus, Vespula germanica. 

Diptcra {■i)—Syrph.: Syrphus arcuatus; Bomhyli.: Anthrax 
halcyon, Sparnopolius. 

Lepidoptera (4) — Nymphal: Phyciodes; Papiliun.: Eurymus; 
Ilcsperi.: Limochores tauraas; Cienuch.: Scepsis. 

Coleoptera (2) — Lampyr.: Chauliognathus pcnnsylvanicus ab ; 
Mclo.: Epicauta pennsylvanica f, n. 

Ilemiptera (1) — Pentatom.: Euschistus fissilis. 

Helianthus annuus (cult).— Blooms July lO-Septerabcr 11; 42 
species and 434 individuals observed, July 11-September 6 ; Mas, Y. 

Long-tongued Bees (19:311) — .-Ip.; Apis sc, 65; Bomb.: Bom- 
bias separatus ^, 12, Bombus americanorus (^ $ $, sc, 117, con- 
similis $, 2, impatiens (^ $, sc, 26, ridingsii J*, 5, Psithyrus varia- 
bilis c? $, 8; Ceratin.: Ceratina % sc, 1; Megachil. ($) : Megachile 
mendica sc, 1, Sayapis sayi 1, Xanthosarus 1; Epeol.: Triepeolus 
conca\'us $, 1 ; Eucer.: Epimelissodcs obliqua (^ $, .sc, 6, Melissodes 
agilis <^ $, sc, 50, autumnalis $, 1, bimaculata <^ % 2, boltoniae 
(^ $, sc, 6, coloradensis $, sc, 2, trinodis ^ $, sc, 4. 

Short-tongued Bees (9: 69)— Uahc^: Agapostemon viridulus 
(^ $, 11, Chloralictus pilosus % c, 1, sparsus $, c, 1, versatus $, 
c, 2, Odontalictus (^ $, sc, 50, Oxystoglossa confusa $, 1, Seladonia 
<^, 1 ; Andrcn.: Pterandrena helianthi cf, 1, pulchella $, 1. 

Diptera (5:36) — Syrph.: Eristalis brousi 1, transversus 1, 
Syritta f, 1, n; Bomhyli.: Anthrax alternata f, 1, n, Sparnopol- 
ius 32. 

Lepidoptera (4:10) — Xyinphal: Anosia 1, Argj-nnis 3; 
I'apilion.: Pieris 2; Ilespcri.: Limochores taumas 4. 

Coleoptera {4:5)— Chry samel, (f, n) : Diabrotica 12-punctata 
1, longicornis 1, \nttata 1; Lampyr.: Chauliognathus pcnnsyl- 
vanicus 2. 

IIemii)tcra (1:3) — Caps.: Lygus 3. 

Helianthus divaricatus (10: 244-5).— Blooms July 22-Sept em- 
ber 15; 75 vi-sitors observed, July 22-Scptember 10; Mas, Y. 

Long-tongued Bees (38) — Ap.: Apis; Bomb.: Bombias .scutel- 
laris 5, 80, separatu.s cT, Bombus americanorum c^ ^, ab; Ceratin.: 



76 FLOWERS AND INSECTS— XXVI 

Ceratina J* $, sc; Megachil.: Trypetini: Neotrypetes truncatus $, 
sc ; Osmiini : Ashmeadiella 5, sc ; Megaehilini : Megachile brevis $, 
mendica (^, petulans (^ 5, sc, fq, 6-dentata ?, sc, Sayapis pugnata 
$, sc, sayi $, sc, fq, Xanthosarus $, sc ; Coelioxyini : Coelioxys alter- 
nata $, germana ^ $, 8-dentata J*, sayi J* ; Epeol. : Epeolus autumn- 
alis c^, fq, bifasciatus (^, pusillus <^, Triepeolus concavus J* 5, con- 
color <^ $, fq, cressonii J* $, fq, donatus J* $, fq, lunatus $, neva- 
densis ?, remigatus J*, simplex 5; Eucer.: Epimelissodes obliqua 
(^ ?, sc, ab, Melissodes agilis ^^ 5, sc, autumnalis <^ % sc, fq, bol- 
toniae % sc, coloradensis cf $, sc, fq, nivea J^, fq, simillima ^, 
trinodis (^ $, sc, fq, vernoniana <^ $. 

Short-tongued Bees (15) — Halict.: Chloralictus illinoensis J*, 
pilosus (^ $, sc, versatus J*, Evylaeus pectoralis 5, c, fq, Odontalictus 
J* $, sc, f q, Oxystoglossa confusa (^ 5, sc, f q ; Collet. : CoUetes ameri- 
canus J* $; Dufoure.: Halictoides J* $, sc, fq; Andren.: Pterandrena 
helianthi J*, pulchella <^ $, sc, fq; Panurg.: Pseudopanurgus albi- 
tarsis J* $, sc, fq, labrosiformis <^ $, sc, fq, labrosus J* $, sc, fq, 
rudbeckiae ^f, rugosus J* $, sc, fq. 

Other Hymenoptera (4) — Sphec: Sphex nigricans; Bemhic: 
Stictiella ; Eumen. : Leionotus arvensis ; Cercer. : Cerceris rufinoda. 

Diptera (13) — Syrph.: Eristalis transversus, Milesia f, n; 
Bombyli.: Anthrax alternata f, n, halcyon, palliata, Exoprosopa 
decora, Geron rufipes, Sparnopolius ab, Systoechus; Conop.: 
Zodion fulvifrons fq, Kobertsonomyia fq, in cop; Anthomy.: 
Proboscimyia ; Agromyz. : Eusiphona. 

Lepidoptera (4) — NympJial.: CharidrysLS ; Papilion.: Callidryas, 
Eurymus ; Hesperi. : Limochores taumas. 

Coleoptera (1) — Lampyr.: Chauliognathus pennsylvanicus fq. 

August 27 the following 16 species and 55 individuals were 
taken on the flowers: 

Long-tongued Bees (8:33) — Ap.: Apis 1; Bovnb.: Bombus 
americanorum 11; Megachil.: Xanthosarus 4; Epeol.: Triepeolus 
concavus 1; Eucer.: Epimelissodes obliqua 11, Melissodes agilis 2, 
coloradensis 1, trinodis 2. 

Short-tongued Bees (2:2) — Halict.: Chloralictus pilosus 1, 
Odontalictus 1. 

Other Hymenoptera (1 : 1) — Sphec: Sphex nigricans 1. 

Diptera (2:8) — Bomhyli.: Sparnopolius 5, Systoechus 3. 

Lepidoptera (2:4) — Papilion.: Eurymus 2; Hesperi.: Limo- 
chores taumas 2. 

Coleoptera (1:7) — Lampyr.: Chauliognathus pennsylvanicus 7. 

Helianthus grosse-serratus (15:469-70). — Blooms August 19- 
October 15 ; 72 visitors observed, August 27-October 15 ; Mas, Y. 



CHARLES nOIiERTSON 77 

Long-tongued Bees (29) — Ap.: Apis ab; Homh.: Bombias auri- 
comus (j* $, scutcllaris (^ ^, fq, separatus (^ §, Bombus ainoricau- 
orum cf 5, ab, consiinilis (^, impatiens $ ^, Psithyrus variabilis 
(^ 9. ^<i: McyiU'hil.: Mef^acliilini : Mcfjachile brevis (^ $, sc, generosa 
9, Sayapis sayi $, se. Xaiithosanis (^ $, sc, ab; Coelioxyini : Coeli- 
oxys rufitarsis $, f*i; Nomad.: Ilolonomada vincta (^ $, fq; Epeol.: 
Triepeolus foncavus $, fq, crcssonii $, fq, donatus c? ?. helianthi 
J* $, ab, type; Eucer.: Epimelissodes obli(|ua cT ?. **c, fq, Melissodes 
agilis (^ 5, sc, ab, autumnalis <^ $, sc, fq, bimaculata $, sc, boltoniae 
5, sc, fq, coloradensis $, sc, fq, nivea <^ 9> pallida $, type, sirnillima 
c^, trinodis c^ $, sc, fq. ^vp*^; Anthophor.: Aniegilla $. 

Short-tongued Bees (9) — Halict.: Agapostemon radiatiis ^T 2> 
sc, texanus cT, viridiilus cf, Chloralictus versatus $, c, Odoiitalictus 
cf 5, sc, f q ; Andren. ((^ $, sc, ab) : Pterandrena lielianthi, type, 
pulchella; Panurg.: Pseudopanurgus solidaginis (^ $, sc, fq; 
Dufoure.: Ilalietoides (^ $, sc, fq. 

Other Ilymenoptera (3) — Sphn.: Priononyx atrata; Bcmbic: 
Bembix niibilli{)ennis, spinolae. 

Diptera (14) — Syrph.: Eristalis latifrons ab, tenax, transversus 
ab, Ilelophilus latifrons, similis, Syrpbus americanus, ribesii; 
Bombyli.: Exoprosopa decora, Sparnopolius ab, Systoecbus fq; 
Conop.: Robertsonorayia ; Tachin.: Macquartia; Muse: Pseudo- 
pyrellia; Anthoniy.: Proboscimyia fq. 

Lepidoptera (13) — Nymphal.: Anosia fq, Argynnis, Euptoieta, 
Speyeria, Vanessa cardiii in, huntera; Papilion.: Eurymus, Laertias, 
Zerene; Ilesperi.: Ilesperia; Arcti.: Utethei.sa ; Clcnuch.: Scepsis; 
Noctu.: Plusia simplex. 

Coleoptera (3) — Chrysomel. (f, n) : Diabrotica 12-punctata, 
longicornis; Lampyr.: Chauliognathiis pennsylvanicus. 

llemiptera (1) — Phymat.: Phymata, pred. 

Helianthus laetiflorus. — Blooms August 1-Septembcr 15; 26 
visitors obscn-ed, Augu.st 19, 20, 28; Mas, Y. 

Long-tongued Bees CO) — Bomb.: Bombias scutellaris 5, sepa- 
ratus (^, Bombus americanorum §; Megachil.: Megachile brevis (^, 
Sayapis sayi 9. sc, Xanthosarus (^ ; Epeol.: Triepeolus concavus 
(^ $; Eucer.: Epimelissodes obliqua cf $, sc, Meli.s.sodes agilis ^ $. 

Short-tongued Bees (4, $, sc) — Halict.: Chloralictus pilosos, 
versatu.s, Evylaeus pectoralis, Odontalictus ab. 

Other Ilymenoptera (2) — Sphec: Sphex nigricans; Ichneumon.: 
Ceratosoma. 

Diptera (6) — Syrph.: Eri.stalis latifrons sf, transversus f; 
Bombyli.: Exoprosopa fasciata, Sparnopolius ab, Systocchua; 
Tachin.: Siphoplagia anomala. 



78 FLOWERS AND INSECTS— XXVI 

Lepidoptera (3) — Nymphal.: Phyciodes; Hesperi.: Pholisora 
catuUus; Ctenuch.: Scepsis. 

Hemiptera (2) — Caps.: Calocoris, Lygus. 

Helianthus mollis (15:469). — Blooms July 9-Septeinber 25; 
27 visitors observed, July 29-August 23 ; Mas, Y. 

Long-tongued Bees (12) — Bomb.: Bombus americanorum <^ ^, 
fq; Megachil.: Megachilini: Megaehile brevis J*, petulans 5, 6-den- 
tata <^, Xanthosarus J* $, sc ; Coelioxyini : Coelioxys 8-dentata J* ; 
Epeol.: Triepeolus concavus $, cressonii 5; Eucer.: Epimelissodes 
obliqua J* 5, sc, f q, Melissodes agilis J* $, sc, coloradensis (^, trinodis 
?, sc. 

Short-tongued Bees (7) — Halict.: Agapostemon viridulus J*, 
Chloralictus pilosus $, sc, versatus $, sc, Odontalictus $, sc, fq, 
Oxystoglossa similis $, sc; Panurg. (J* % sc) : Pseudopanurgus 
albitarsis in cop, rugosus. 

Diptera (6) — Syr ph.: Eristalis latifrons, Tropidia mamillata; 
Bombyli.: Anthrax halcyon, Exoprosopa decora, Systoechus fq. 

Lepidoptera (2) — Nymphal.: Phyciodes; Papilion: Eurymus. 

Helianthus scaberrimus. — Blooms August 2-September 9; 12 
visitors observed, August 9-September 9 ; Mas, Y. 

Long-tongued Bees (5) — Bomh.: Bombus americanorum ^; 
Megachil.: Xanthosarus $; Eucer.: Epimelissodes obliqua cf ?, 
Melissodes agilis $, sc, coloradensis ?, sc. 

Short-tongued Bees (3) — Dufoure.: Halictoides $, sc; Andren.: 
Pterandrena helianthi J* $, sc, fq, pulchella ?, sc, type. 

Diptera (2) — Syrph.: Eristalis transversus; Bomhyli.: Sparno- 
polius. 

Coleoptera (1) — Lampyr.: Chauliognathus pennsylvanicus. 

Hemiptera (1) — Caps.: Calocoris. 

Helianthus strumosus (15:470). — Blooms July 6-September 
7 ; 14 visitors observed, August 22, 24 ; Mas, Y. 

Long-tongued Bees (6) — Bomb.: Bombias separatus J* ; Ceratin.: 
Ceratina 5; Megachil.: Megaehile petulans (^; Epeol.: Triepeolus 
concavus 5, cressonii <;^; Eucer.: Epimelissodes obliqua J* $, sc, fq. 

Short-tongued Bees (2, $) — Andren.: Pterandrena pulchella fq; 
Panurg.: Pseudopanurgus labrosiformis. 

Other Hymenoptera (1) — Sphec: Sphex nigricans. 

Diptera (3) — Bombyli.: Anthrax halcyon, Sparnopolius, Sys- 
toechus. 

Lepidoptera (2) — Nymphal.: Charidryas; Papilion.: Eurymus. 

Helianthus tuberosus (15:471). — Blooms July 15-September 
28 ; 53 visitors observed, August 13-September 28 ; Mas, Y. 



CHARLES EOBERTSON 79 

Long-tongued Bees (17) — Bomb.: Bombias aiiricomus §, sepa- 
ratiis (^ $, Bonibus americanonini (^ ^, kc, f(|, consiniilis (^; 
Megachil. (?) : Megachile brevis, Sayapis sayi, sc, Xanthosarus; 
Nomad.: Ilolonomada vincta $; Eptol.: Epeolus autumnalis cf $, 
Triepeolus concavus J, concolor 9; Eucer.: Epimelissodes obliqua 
9, 80, ab, Melissodes agilis <^ $, sc, fq, bimaculata $, coloradcnsis 
^ 5, so, fq, simillima cT. trinodis (^ 9. ^Q- 

Short-tongued Bees (15) — Halict. ($) : Chloralictus pilosus, 
sparsus, c, n, zephyrus e, Curtisapis eoriacea sc, Evylaeus pectinatus 
type, Odontalictus sc ; Collet.: CoUetes compactus $, sc ; Dufoure.: 
Ilalictoides, $; Andrcn.: Pterandrena aliciae $, sc, helianthi 9, pul- 
chella (^ $, sc, ab; Panurg.: Pseudopanurpus labrosiformis (^ $, sc, 
fq, labrosiis (^ $, sc, ab, in cop, type, rugosus (^ $, sc, ab, in cop, 
solidaginis J*. 

Other Hymenoptora (3) — Scoli.: Scolia bicincta ; Philanth.: 
Cerceris kennicottii; Criihron.: Prototliyroopus bipeminus. 

Diptera (9) — Syrph.: Eristalis tenax fs, traiisversus; liombyli.: 
Anthrax halcyon fq, Exoprosopa decora, fascii>ennis fq, Sparno- 
polius ab, Systoechus fq; Muse: Pseudopj-rellia ; Trypet.: Trypeta 
finalis n. 

Lepidoptera (4) — Nymphal.: Phyciodes; Lycaen.: Eupsyche; 
Papilion.: Eurymus; Hcspcri.: Pholisora catullus. 

Coleoptera (4) — Chryaomel.: Diabrotica longicornis f, n; 
Lampyr.: Chauliognathus pennsylvanicus; Melo.: Epicauta penn- 
sylvanica f, n; Mordell.: ^lordella scutellaris f, n. 

Ilemiptera (1) — Caps.: Lygiis. 

Heliopsis helianthoides (16:177). — Blooms June 22-October 
2 ; 51 visitors observed, July 1-October 2 ; Mas, Y. 

Long-tonfjued Bees (19) — Bomb.: Bombus americanorum c^, im- 
patiens 5; Ceratin.: Ceratina 9; Megachil.: Megachilini: Megachile 
brevis (^, fq, 6-dentata c^; Coelioxyini : Coelioxys germana (^, 8-den- 
tata (^ $, sayi cT; Pasit.: Ilolcopasites heliopsis cf, type; Epeol.: 
Epeolus bifasciatus (^, fq, Triepeolus concavus (^ $, concolor (^ $, 
fq, cressonii cT, lunatus $; Eucer.: Epimelissodes obliqua cT $. sc, 
Melissodes coloradcnsis (^, simillima c^, trinodis <^ $, sc, vernon- 
iana ^. 

Short-tongued Bees (11) — Halict. ($) : Chloralictus obscurus, 
pilosus sc, pruinosus sc, sparsus c, n, Evylaeus pectoralis c, n, 
Odontalictus, Oxystoglossa confusa, pura; Andren.: Pterandrena 
aliciae 9; Panurg.: Pseudopanurgus labrosiformis ^^ 9. sc. rugosus 

Other Ilymenoptera (4) — Sphec: Sphex nigricans, vulgaris; 
Bembic: Bembix spinolae; Scoli.: Scolia bicincta. 



80 FLOWERS AND INSECTS— XXVI 

Diptera (11) — Syrph.: Eristalis transversus; Empid.: Parempis 
fq; Bombyli.: Anthrax halcyon, Exoprosopa faseiata, fascipennis, 
Geron calvus fq, rufipes, Sparnopolius, Systoechus; Conop.: Stylo- 
gaster biannulata; Agromyz.: Eusiphona. 

Lepidoptera (4) — Nymphal.: Phyciodes; Lycaen.: Uranotes; 
Papilion. : Pontia ; Hesperi. : Pholisora catullus. 

Coleoptera (1) — Lampyr.: Chauliognathus pennsylvanicus. 

Hemiptera (1) — Zt/fi'^^.: Lygaeus. 

Krigia amplexicaulis (15:476). — Blooms May 1-June 19; 68 
visitors observed, May 10-June 15 ; Mis, Y. 

Long-tongued Bees (17) — Ap.: Apis sc, ab ; Bomb. ($) : Bombias 
scutellaris, separatus, Bombus americanorum ; Ceratin.: Ceratina 
(^ $, so, ab; 8telid.: Mierostelis c^; Megachil.: Osmiini: Aleidamea 
simplex J* $, fq, Gnathosmia $, sc, Osmia pumila 5; Megachilini: 
Megachile brevis J*; Coelioxyini: Coelioxys 8-dentata (^ $; Nomad.: 
Centrias americanus (^ $, f q, Holonomada affabilis J* $, fq, superba 
$, ab, Nomada illinoensis $; Epeol.: Epeolus interruptus J*; Eucer.: 
Tetralonia dilecta J* $, fq. 

Short-tongued Bees (16) — Halict. (5) : Agapostemon viridulus 
sc, Chloralictus albipennis sc, ab, coreopsis sc, pilosus sc, ab, ver- 
satus sc, ab, Evylaeus pectoralis sc, Halictus lerouxii, parallelus, 
Odontalictus sc, ab, Oxystoglossa confusa sc, ab, similis sc, ab, 
Seladonia sc; Prosopid.: Prosopis pygmaea J* $, sf, ziziae J*, f ; 
Collet.: Colletes aestivalis (^ $; Andren.: Pterandrena krigiana 
(^ $, sc, ab, type, oligolege. 

Other Hymenoptera (9) — Sphec: Sphex pictipennis, vulgaris; 
Eumen.: Leionotus anormis ab, clypeatus, foraminatus, histrionalis, 
scrophulariae, ziziae; Crdbron.: Solenius. 

Diptera (17) — Syrph.: Eristalis dimidiatus ab, latifrons, tenax, 
transversus, Helophilus latifrons, similis, Mesogramma marginata, 
Sphaerophoria, Tropidia mamillata; Conop.: Oncomyia, Zodion ful- 
vifrons; Tachin.: Cistogaster occidua, pallasii, Ocyptera tenuis; 
Muse: Lucilia sylvarum, Pseudopyrellia ; Anthomy.: Phorbia acra. 

Lepidoptera (5) — Nymphal.: Anosia, Phyciodes; Papilion.: 
Eurymus, Papilio; Hesperi.: Polites. 

Coleoptera (3, f, n) — Chrysomel.: Diabrotica 12-punctata fq; 
Coccinell.: Megilla; Erotyl.: Languria fq. 

Hemiptera (1) — Lygae.: Lygaeus. 

May 18 and 25, the following 33 species and 202 individuals 
were taken on the flowers : 

Long-tongued Bees (5:17) — Ap.: Apis 11; Bomb.: Bombias 
separatus 1, Bombus americanorum 1 ; Ceratin.: Ceratina 3 ; Eucer.: 
Tetralonia dilecta 1. 



CHARLES ROBERiaOS 81 

Short-tonerued Bees (13:109) — Tlalict.: Apapostemon viridulus 
3, Chloralietiis coreopsis 1, pilosiis 18, versatus 32, Evylaous i)ec- 
toralis 2. Ilalictus Icrouxii 3, i)arallelus 1. Odontalictus 10, Oxysto- 
glossa confusa 10, similis 13; Prosopid.: Trosopis pygmaea 1; 
Collet.: Colletes aestivalis 4; Andren.: Pterandrena krigiana 11. 

Diptera (11:72) — Syrph.: Eristalis dimidiatus 8, latifrons 1, 
Ilelophiliis latifrons 1, similis 1, Mesogramma marginata 34, 
Sphaerophoria 3; Conop.: Oncomyia 2, Zodion fulvifrons 2; 
Tachin.: Cistogaster pallasii 1; Muse: Liiciliji sylvarum 1; 
Anthomit.: Phorbia acra 18. 

Lepidoptora (2:2) — Nymphal.: Phyeiodes 1; Papilion.: Eury- 
mus 1. 

Coleoptera (1:1) — Chrysomcl.: Diabrotica 12-punetata 1. 

llemiptera (1:1) — Lygae.: Lygaous 1. 

Lactuca canadensis.— Blooms June 22-September 6 ; 1 visitor 
observed, August oO ; Mas, Y. 

Long-tongued Bees (1) — Megachil.: Xanthosanis $, sc. 

Lactuca floridana. — Blooms July 25-October 6; 15 visitors 
observed, August 17-October 6 ; Mas, R. 

Long-tongued Bees (8) — Ap.: Apis sc, f q ; Bwnb.: Bombias 
auricomus §, Bombus impatiens $, sc; Ceratin.: Ceratina $; 
Megachil.: Megachile brevis ^T $, sc, Xanthosarus 5; Eucer. ($, sc) : 
Epimelissodes obliqua fq, Melissodes boltoniae. 

Short-tongued Bees (6, $) — Halict.: Chloralictus pilosus c, n, 
sparsTis c, n, Evylaeus peetoralis c, n, Odontalictus sc; Prosopid.: 
Prosopis ziziae, f, n; Collet.: Colletes araericanus. 

Coleoptera (1) — Lampyr.: Chauliognathus pennsylvanicus fq. 

Lepachys pinnata (15:46^9). — Blooms June 19 — August 29; 
67 visitors observed, July 1-August 21 ; Mas, Y. 

Long-tongued Bees (27) — Bomb.: Bombias scutellaris $; 
Megachil.: Osmiini: Alcidamea simplex $; Megachilini : Megachile 
brevis (^, fq, mendica $, 6-dentata c? $, sc, fq, Sayapis pugnata $, 
**yi c^ 9> ^^f Xanthosanis <^ $; Coelioxyini : Coelioxys alternata 
c^ 5, modesta J', 8-dentata (^ $; Epeol.: Epeolus bifusciatus cT. ^q> 
Triepcolus concavus cT $> s^^- concolor ^T $. tib, cressonii cT ?» ^Q» 
lunatus ^ $, fq, remigatus (/ $, ab; Eucer.: Epimeiisso<les illinocn- 
sis ^ $, sc, type, obliqua <^ $, sc, ab, Melis.sodes agilis cT 9. fQ. 
bimaculata (^ $, ab, boltoniae $, comptoides cT 9, nivea (^, simillima 
cT, ab, trinodis (^ $, .sc. vernoniana cT 9- 

Short-tongued Bees (11) — Ilalict.: Agapostcmon radiatus (^, 
texanus $, sc, Aug(H-hl.ira f. rvida <^, Chloralictus albipennLs 9. sc. 



82 FLOWERS AND INSECTS— XXVI 

I 

pruinosus J* $, versatus $, sc, Curtisapis forbesii $, Halictus { 

lerouxii 5, sc, Odontalictus J* 5, sc, ab ; Andren. : Pterandrena rud- j 

beckiae $, sc ; Panurg. : Pseudopanurgus albitarsis $. ; 

Other Hymenoptera (16) — SpJiec: Priononyx atrata, thomae, ; 

Sphex nigricans, pictipennis; Bemhic: Berabix nubillipennis ab, ' 

spinolae, Bicyrtes ventralis fq, Stictiella fq; Vesp.: Polistes varia- ' 

tus; Eumen.: Leionotus anormis, arvensis, clypeatus, fundatus, | 

Pterochilus; Crabron.: Anacrabro, Entomognathus. j 

Diptera (8) — Empid.: Parempis; Bombyli.: Exoprosopa decora, ; 
Geron rufipes, Sparnopolius, Systoechus; Conop.: Zodion oblique- 

f asciatum f q, in cop ; Tachin. : Cistogaster occidua ; Agromyz. : \ 

Eusiphona. • 

Lepidoptera (3) — Nymphal.: Phyciodes; Lycaen.: Everes, ; 

Uranotes. i 

Coleoptera (2) — Buprest.: Acmaeodera pulchella f, fq; i 

Cermnbyc: Typocerus sinuatus f, n. ] 

Liatris pycnostachya (15:454). — Blooms July 7 — August 23; | 

34 visitors observed, July 24^August 10; Mas, E. | 

Long-tongued Bees (14) — Ap.: Apis ab; Bomb.: Bombias sepa- i 

ratus J* ^, fq, Bombus americanorum (^ ^, sc, fq, consimilis ^, ! 

impatiens ^, sc; Ceratin.: Ceratina $, fq; Megachil.: Sayapis sayi ; 

5, sc, Xanthosarus J* $, f q ; Epeol. : Triepeolus concavus J* $, con- : 

color, 2, remigatus $; Eucer.: Epimelissodes obliqua (^ $, sc, fq, i 

Melissodes agilis J* $, fq, coloradensis J^. j 

Short-tongued Bees (2) — Halict.: Agapostemon viridulus (^ $, ! 

sc, fq, Odontalictus $, c, fq, n. I 

Diptera (6) — Syrph.: Eristalis latifrons, tenax; Bomhyli.: \ 

Exoprosopa fasciata ab, Systoechus; Conop.: Physocephala texana, j 

Stylogaster biannulata. •. 

Lepidoptera (12) — Nymplial.: Anosia, Basilarchia archippus, ! 

Speyeria; Papilion.: Eurymus fq, Laertias, Papilio, Pieris; \ 

Hesperi. : Epargyreus, Euphyes metacomet, Limochores taumas fq, j 

Polites fq ; Ctenuch. : Scepsis. j 

Liatris scariosa. — Blooms July 27 — October 6; 9 species ob- j 

served, August 22-September 3 ; Mas, R. j 

Long-tongued Bees (2) — Bomb.: Bombus americanorum J* ^; ! 

Eucer.: Melissodes nivea <^. j 

Other Hymenoptera (1) — SpJiec: Sphex vulgaris, j 

Diptera (1) — Bombyli.: Exoprosopa fasciata. j 

Lepidoptera (5) — Nymphal.: Anosia; Papilion.: Euphoeades, j 

Eurymus, Zerene; Hesperi.: Polites. j 



CHARLES ROBERTSON 83 

Parthenium integrifolium (15 : 464-5).— Blooms June 6-July 
30; 55 visitors obsmod, June 21, 27, July 11; Mis, W. 

Lonf?- ton 0:11 ed Bees (4) — Ccratin.: Ceratina $, sc; Megachil.: 
Neotrypetes productus (^, truncatus $, sc ; Cyphopyga % c. 

Short-tonj^ed Bees (7) — Ilalict.: Auf^oohlora fenida $, Chlor- 
alictus pilosus $, sc, versatus (^ $, sc, ab, Odontalictus $, Oxystog- 
lossa similis $, sc, fq, Seladonia $, sc; Prosoi/id.: Proposis pyg- 
maea <^. 

Other Hj-menoptcra (15) — Sphec: Sphex nigricans; Scoli.: 
Elis 5-cincta; Philanfh.: Cerceris compacta, robertsonii ; Eumen.: 
Leionotus anormis, clypeatus, histrionalis, ziziae; Crahron.: Sol- 
enius; Oxyhel.: Notoglossa amcricana, frontalis fq; Chrysid.: Iledy- 
chruni panum ; Bracon.: Agathis vulgaris, Vipio; Tenthredin.: 
Ilylotoma humeralis. 

Diptera (20) — Syr ph.: Mesogramma geminata, marginata, 
Sphaerophoria, Syritta ; Empid.: Parenipis; Conop.: Zodion fulvi- 
frons; Tachin.: Cistogaster occidua, Maequartia, Oeyptera tenuis, 
Phorantha purpurascens, Senotainia rubriventris, trilineata fq ; 
Sarcophag.: Ilelicobia helicis, Sarcophaga hunteri; Muse: Lucilia 
sylvarum, Pseudopyrellia, Stomoxys; Anthomy.: Anthomyiella, 
Calythea ; Agromyz.: Lobioptera. 

Coleoptera (6) — Ceramhyc: Typocerus sinuatus fq ; Ckrysomel.: 
Diabrotica atripennis, 12-punctata f; Mordell.: Pentaria; Rhipi- 
phor.: Rhipiphorus limbatus; Scarahae.: Trichius piger sf, fq. 

Hemiptera (3) — Caps.: Calocoris, Lygus fq; Corimelaen.: 
Corimelaena pulicaria. 

Prenanthes aspera. — Blooms August 29-October 6 ; one visitor 
observed, September 13 ; Mas, W. 

Long-tongued Bees (1) — Bomb.: Bombus americanorum J*. 

Prenanthes crepidinea. — Blooms August 20-September 25 ; five 
visitors ob.served, August 25, September 6, 13; Mas, Y. 

Long-tongued Bees (2) — Bamh.: Bombus americanorum (^, im- 
patiens 5, sc. 

Short-tongued Bees (1) — Halict.: Oxystoglossa confu.sa $, c, n. 

Coleoptera (2) — Chrysamel.: Diabrotica longicomis f, fq, n; 
Lampyr.: Chauliognathus ponnsylvanicus fq. 

Rudbeckia hirta (15: 466-7).— Blooms June 1-September 16; 
84 visitors observed, June 9-August 22; Mis, Y. 

Long-tongued Bees (14) — Ap.: Apis; Ceratin.: Ceratina 9. s<^» 
fq; Megachil.: Trypetini: Neotrypetes truncatus $ sc; Megachilini : 
Cyphopyga $, sc, Megachile brevis ^ $, 6-dentata $, sc, Sayapis 



84 FLOWERS AND INSECTS— XXVI 

pugnata $, sc; Coelioxyini: Coelioxys 8-dentata (^ ; Nomad.: Cen- 
trias americanus (^ 5; Epeol.: Epeolus interruptus J*, Triepeolus 
coneolor J*; Eucer.: Epimelissodes obliqua (^, Melissodes boltoniae 
5, sc, fq, trinodis $. 

Short-tongued Bees (13) — Ealict.: Agapostemon radiatus J*, 
viridulus $, sc, Chloralictus coreopsis 5, c, pildsus J* $, sc, pruinosus 
J*, versatus J* ?, sc, Evylaeus pectoralis (^ $, sc, fq, Odontalictus 
$, sc, Oxystoglossa confusa $, sc; Collet.: Colletes eulophi $, sc; 
Andren.: Pterandrena rudbeckiae (^ ?, sc, ab, in cop, type; Panurg. 
(cf 2, sc, ab) : Pseudopanurgus albitarsis in cop, rudbeckiae. 

Other Hymenoptera (7) — Sphec: Priononyx thomae, Spliex 
nigricans fq, pictipennis; Bembic: Stictiella; Eumen.: Leionotus 
anormis, arvensis ; Bracon. : Aenignostomus f q. 

Diptera (31) — Stratiomy.: Odontomyia nigrirostris ; SyrpJi.: 
AUograpta, Eristalis aeneus, dimidiatus, latifrons ab, transversus 
ab, Helophilus latifrons, Mesogramma marginata ab, Paragus 
tibialis sf, Spbaerophoria, Syritta, Tropidia mamillata, Volucella 
fasciata; Empid.: Parempis; Bomhyli.: Anthrax parvicornis, 
Exoprosopa decora, emarginata, fascipennis, Geron calvus fq, 
Phthiria cincta fq, sulphurea, Sparnopolius ; Conop.: Zodion fulvi- 
frons; Tachin.: Archytas analis, Ocyptera argentea, tenuis ab, Spal- 
lanzania fq, Triehophora; Anthomy.: Coenosia antica, Probos- 
cimyia; Sapromyz.: Sapromyza vulgaris. 

Lepidoptera (12) — Nymphal.: Argynnis, Basilarchia archippus, 
Charidryas, Phyciodes; Lycaen.: Chrysophanus, Thecla calanus; 
Papilion.: Eurymus, Pieris; Hesperi.: Limochores taumas, Polites; 
Ctenuch.: Scepsis; Noctu.: Plusia simplex. 

Coleoptera (6) — Buprest.: Acmaeodera pulchella f ; Ceramhyc: 
Typocerus sinuatus sf, fq; Chrysomel.: Diabrotica 12-punctata f ; 
CurcuUon.: Centrinus scutellum-album f ; Mordell.: Mordella scutel- 
laris f ; Melo. : Macrobasis f . 

Hemiptera (1) — Caps.: Lygus. 

Rudbeckia laciniata (16: 177-8).— Blooms July 17-October 3; 
52 visitors observed, August 13-October 3 ; Mas, Y. 

Long-tongued Bees (18) — Ap.: Apis sc, ab; Bomb.: Bombias 
scutellaris ^, separatus ^, sc, Bombus americanorum J* ^, im- 
patiens <^ ^, Psithyrus variabilis $ ; Ceratin. : Ceratina 5, Zaodon- 
tomerus J*; Megachil.: Neotrypetes truncatus c^; Megachile petulans 
2, SC; Epeol.: Epeolus autumnalis J* 2? fq» Triepeolus donatus (^, 
pectoralis J* $, fq; Eucer.: Epimelissodes obliqua $, sc, Melissodes 
autumnalis J*, coloradensis J*, simillima J*, fq, trinodis J* 5, sc, fq. 

Short-tongued Bees (8) — Ealict.: Chloralictus pilosus $, Odon- 
talictus ^ 5, sc, fq; Collet.: Colletes eompactus J* ?, sc, fq; Andren.: 



CHARLES ROBERTSON 85 

Pterandrena aliciae $, sc, fq; Panunj.: Pseudopanurgus albitarsis 
J* $, sc, labrosiformis (^ $, se, fq, rudbeckiae o'' ?, sc, fq, rugosus $. 

Other Ilymenoptera (5) — Sphec: Sphex gracilis f<j, nigricans, 
vulgaris; Bembic: Bembix spinolae; Scoli.: Scolia bicincta. 

Diptora (16) — Syrph.: Eristalis diiiiidiatus, transvcrsus Syr- 
phus ribesii f, n; Empid.: Parempis fq; liombyli.: Anthrax alter- 
nata, halcyon, Exoprosopa decora, fasciata, 8i)arnopolius, Sys- 
toechus; Conop.: Zodion fulvifrons; Tachin.: Archytas aterrima, 
Cyphocera, Peleteria fq, Senotainia trilineata, Spallanzania. 

Lepidoptera (5) — Nymphal.: Charidryas, Vanessa huntera; 
Lycaen.: Cyaniris; Hespcri.: Limochores taiimas; Ctenuch.: Scepsis. 

Rudbeckia subtomentosa.— Blooms July 19-September IG; 07 
visitors observed, July 30-September 2; Mis, Y. 

Long-tongued Bees (13) — Ap.: Apis; Ceratin.: Ceratina $, sc, 
ab; Mcgachil.: ^Megachile brevis (^ $, fq, petulans $, sc, fq, 6-dentata 
$, Oligotropus $, Sayapis sayi $, sc; Epcol.: Ei)eolus bifasciatus (^, 
Triepeolus concolor 5; Euccr.: Epimelissodes illinoensis $, sc, 
obliqua ^ $, sc, ab, Melissodes simillima J", trinodis (^ % sc, fq. 

Short-tongued Bees (14) — Halict.: Chloralictus albipennis $, 
sc, coreopsis ^, sc, pilosus (^ $, sc, ab, sparsus $, sc, fc|, versatus $, 
sc, ab, zephyrus $, Curtisapis coriacea c^, Evylaeus pectoralis (^ $, 
sc, ab, Ilalictus parallelus J*, Odontalictus cf $, sc, ab, Seladonia 
(^ $, sc, fq; Panurg.: Pseudopanurgus albitarsis $, sc, rudbeckiae 
(^ $, sc, fq, solidaginis J* $, sc, ab. 

Other Ilj-menoptera (16) — Sphec: Priononyx atrata, thomae, 
Sphex gracilis, nigricans fq, pictipennis fq, vulgaris; Bembic: 
Bembix nubillipennis, Bicyrtes ventralis ab, Stictiella; Scoli.: Elis 
5-cincta, Scolia bicincta f q ; Eumen.: Leionotus anormis ab, arvensis 
fq, molestus, Pterochilus; Ichneumon.: Ceratosoma. 

Dii)tera (35) — Syrph.: Eristalis latifrons fq, transvcrsus ab, 
Mesogramma geminata, marginata sf, ab, polita, Orthoneura nitida, 
Sphaerophoria, Syritta ; Empid: Parempis ab ; Bombyli.: Exopro- 
sopa decora, fascipennis fq, Lepidophora, Phthiria aldrichi, cincta 
fq, Sparnopolius ab, Systoechus ab, Toxophora ; Conop.: Oncomyia, 
Zodion obliquefasciatum; Tachin: Cistoga.ster occidua fq, Epi- 
griniyia floriden.sis, Leucostoma atra, siphonina, Ocyptera lata, 
tenuis, Peleteria, Phorantha humeralis, i)urpura.scens, Senotainia 
trilineata, Siphona, Si|)hoplagia anomala ab, Spallanzania ab; 
Muse: Pseu(loj)yrt'llia ; Ayromyz.: Eiisiplioiia ab ; Osrin.: Siphon- 
ella cinerea. 

Lepidoptera (12) — Nymphal.: Basilarchia archippus, Chari- 
dryas, i'hyciodes ab; Lycaen.: Chry.sophanus, Cyaniri.s, Everea, 



86 FLOWERS AND INSECTS— XXVI 

Uranotes; Papilion.: Eurymus, Pontia; Hesperi.: Hesperia, Limo- 
chores taumas; Ctenuch.: Scepsis. 

Coleoptera (3) — Ceramhyc: Batyle f; Curculion.: Centrinus 
scutellum-album f ; Lampyr.: Chauliognathus pennsylvanieus. 

Hemiptera (4) — Caps.: Calocoris, Lygus; Pentatom.: Euschistus 
ictericus; Beryt.: Harmostes. 

The following 76 species and 669 individuals were taken on the 
flowers, July 30-August 27, 1909 : 

Long-tongued Bees (11:44) — Ap.: Apis 1; Ceratin.: Ceratina 
11; Megachil: Megachile brevis 2, petulans 5, Oligotropus 1, Say- 
apis sayi 1 ; Epeol. : Epeolus bifasciatus 1 ; Triepeolus concolor 1 ; 
Eucer.: Epimelissodes illinoensis 1, obliqua 15, Melissodes 
trinodis 5. 

Short-tongued Bees (13:271) — Halict.: Chloralictus albi- 
pennis 1, coreopsis 1, pilosus 99, sparsus 7, versatus 56, zephyrus 
1, Curtisapis coriacea 1, Evylaeus pectoralis 28, Halictus paral- 
lelus 1, Odontalictus 69, Seladonia 5; Panurg.: Pseudopanurgus 
albitarsis 1, solidaginis 1. 

Other Hymenoptera (12:59) — Sphec: Priononyx atrata 2, 
Sphex gracilis 1, nigricans 6, pictipennis 1; Bembic: Bembix 
nubillipennis 1, Bicyrtes ventralis 21, Stictiella 1; Scoli.: Elis 5- 
cincta 3, Scolia bicincta 6 ; Eumen. : Leionotus anormis 9, arvensis 
7, molestus 1. 

Diptera (28:247) — Syr ph.: Eristalis latifrons 2, transversus 
20, Mesogramma geminata 2, marginata 8, polita 2, Orthoneura 
nitida 2, Syritta 1; Empid.: Parempis 12; Bomhyli.: Exoprosopa 
decora 1, fascipennis 6, Lepidophora 2, Phthiria aldrichi 5, cincta 
5, Sparnopolius 33, Systoechus 6, Toxophora 1 ; Conop. : Zodion 
obliquef asciatum 1 ; Tachin. : Cistogaster oecidua 1, Epigrimyia 
floridensis 1, Ocyptera tenuis 5, Peleteria 2, Phorantha humeralis 1, 
Senotainia trilineata 2, Siphona 1, Siphoplagia anomala 49, Spall- 
anzania 57; Muse: Pseudopyrellia 1; Agromyz.: Eusiphona 18. 

Lepidoptera (9:41) — Nymphal.: Basilarehia archippus 2, 
Charidryas 1, Phyciodes 32; Lycaen.: Chrysophanus 1, Everes 1; 
Papilion.: Eurymus 1, Pontia 1; Hesperi.: Limochores taumas 1; 
Ctenuch.: Scepsis 1. 

Coleoptera (3:7) — Ceramhyc: Batyle 2; Curculion.: Centrinus 
scutellum-album 3; Lampyr.: Chauliognathus pennsylvanieus 2. 

Rudbeckia triloba (15 : 467-8).— Blooms July 19-October 26; 
107 visitors observed, July 23-October 1 ; Mas, Y. 

Long-tongued Bees (23) — Ap.: Apis sc; Bomh.: Bombias auri- 
comus c?, scutellaris ^, separatus c^ $ ^, fq; Ceratin.: Ceratina $, 
sc, ab; Stelid.: Stelidium J*; Megachil.: Trypetini: Neotrypetes 



CHARLES ROBERTSON 87 

truncatus (^ $ ; Mcgachilini : Megaehile brevis cT, petulans (^, Sayapis 
sayi $, sc ; Coelioxyini : Coelioxys altcrnata (^ $, 8-dentata $, sayi 
c^; Epeol.: Tricpeolus coneolor $, cressonii (^ $, fq, helianthi (;^; 
Eucer.: EpimclissoUes obli(iua c^ $, sc, ab, Melissodes agilis cT $i 
fq, bimaculata cT ?. boltoniae $, c, similliina <^, trinodis cf $, sc, 
fq, vernoniana <^ $. 

Short-tongTied Bees (25) — Ilalict.: Agapostcmoii radiatus <^, 
Chloralietus pilosus cT $. sc, fq, sparsus $, sc, vcrsatus (^ $, sc, 
zephynjs <^ $, Curtisapis coriacea <^ $, Evylaeus pectoralis $, sc, 
ab, Ilalictus lerouxii $, Odontalictus <^ $, sc, ab, Oxystoglossa con- 
fusa $, sc, pura $, sc, similis $, sc, Seladonia <^ $; Collet.: Colletes 
americanvis $, sc, compactus $, sc; Andren.: Pterandrena aliciae 
(^ 5, sc, fq, rudbcckiae $, sc ; Paniirg.: Calliopsis andreniforniis (^, 
coloradcnsis <^ $, sc, Pscudopanurgus astcris $, sc, compositarum (^, 
labrosiforniis $, sc, labrosus (;^ $, sc, ab, rudbcckiae (^ $, sc, ab, 
in cop, type, nigosus (^ $, sc. 

Other Hymenoptera (12) — Sphcc: Sphex gracilis, nigricans; 
Bemhic: Bcmbix spinolae, Bicyrtes ventralis, Stictiella ; Scoli.: 
Elis interrupta, 5-cincta, Scolia bicincta; Vesp.: Polistes variatus; 
Eumen.: Leionotus arvensis; Oxybcl.: Notoglossa americana; 
Ichneumon.: Exetastes suaveolens. 

Diptera (37) — Syrph.: Eristalis latifrons, transversus fq, Mal- 
lota cimbiciformis, Spilomyia longicornis, Volucclla fasciata; 
Empid.: Parempis fq; Bombyli.: Anthrax fulvohirta, halcyon fq, 
Argyramoeba oedipiis f, n, Exoi)rosopa decora, fasciata, fascipennis, 
Geron rufipes, Lepidophora, Phthiria cincta, Sparnopolius f<i, Sys- 
toechus. Systropus, Toxophora; Conop.: Conops brachyrrhynchus, 
Oncomyia, Zodion obliquefasciatum ; Tachin.: Apinops, Archytas 
aiialis, Cistogaster occidua, Epigrimyia geniculata ab, illinoensis 
type, Leskiomima secunda, Ocyptera tenuis, Peleteria fq,' Senotainia 
trilineata, Siphoplagia anomala ab, Spallanzania, Trio6ophora; 
Deri.: Ptilodexia; Muse: Pseudopyrellia ; Agromyz.: Eusiphona. 

Lepidoptera (7) — Nymphal.: Basilarchia archippus, Charidryas 
fq, Phyciodes f (} ; Lycaen.: p]veres; Pnpilion.: P^urymus. Pontia; 
Hesperi.: Politcs. 

Coleoptera (3) — Lampyr.: Chauliognathus ponnsylvanicus ab; 
Mrlc: Epicauta pennsylvanica f, n; MonlclL: Mordella raargi- 
nata f, n. 

The following 23 visitors and 1.38 individuals w«'rt' takt'u on the 
flowers on Augu.st 20, 24 : 

Long-tongued Bees (5:7) — Bomb.: Bombias auricomus 1; 
Ceratin.: Ceratina 1; Megdchil.: Megachile petulana 1; Eucer.: 
Epimelissodes obliqua 2, Mcli.ssodes boltoniae 2. 



88 FLOWERS AND INSECTS— XXVI 

Short-tongued Bees (6:44) — Halict.: Chloralictus pilosus 2, 
versatus 1, Evylaeus peetoralis 2, Odontalietus 36, Oxystoglossa 
similis 1; Panurg.: Pseudopanurgus rudbeckiae 2. 

Other Hymenoptera (2 : 3) — Sphec: Sphex nigricans 1 ; Eumen.: 
Leionotus arvensis 2. 

Diptera (6:34) — Syrph.: Eristalis transversus 6; Bomhyli.: 
Sparnopolius 3, Systoechus 1; Tachin.: Cistogaster occidua 1, 
Siphoplagia anomala 22; Muse: Pseudopyrellia 1. 

Lepidoptera (2:7) — Nymphal.: Basilarchia archippus 1, 
Phyciodes 6. 

Coleoptera (2:43) — Lampyr.: Chauliognathus pennsylvanicus 
42; Epieauta pennsylvanica 1. 

Senecio aureus. — Blooms May 7-June 5; 18 visitors observed 
on May 15, June 2 ; Mis, Y. 

Long-tongued Bees (4) — Ceratin.: Ceratina (^; Nomad.: Cen- 
trias americanus J*, Holonomada superba J* ?, fq; Eucer.: Tetra- 
lonia dilecta J*, f q. 

Short-tongued Bees (5, $) — Halict.: Chloralictus pilosus sc, ab, 
pruinosus sc, Odontalietus sc, ab, Oxystoglossa confusa, sc, similis. 

Other Hymenoptera (1) — Eumen.: Leionotus clypeatus. 

Diptera (8) — Syrph.: Eristalis latifrons, Mesogramma margi- 
nata, Sphaerophoria, Tropidia mamillata; Conop.: Zodion fulvi- 
frons; Tachin.: Cistogaster occidua, Epigrimyia floridensis fq, 
Peleteria. 

Silphium integrifolium (15:463). — Blooms June 10-September 
20 ; 24 visitors observed, July 7-September 16 ; Mas, Y. 

Long-tongued Bees (18) — Ap.: Apis sc; Bomb.: Bombus con- 
similis ^, impatiens ^ ; Ceratin. : Ceratina $, f q ; Megachil. : Cypho- 
pyga c?, Megachile brevis J*, mendica $, petulans J*, Sayapis pol- 
licaris $, pugnata (^ $, sc, ab, sayi cf; Epeol. (J*) : Triepeolus 
concavus, remigatus, simplex; Eucer.: Epimelissodes obliqua J* ?, 
Melissodes agilis J*, fq, coloradensis J* $, sc, trinodis cf , fq. 

Short-tongued Bees (3) — Halict.: Agapostemon radiatus J* $, 
sc, Odontalietus $; Andren.: Pterandrena pulchella $. 

Diptera (3) — Bomhyli.: Systoechus; Conop.: Physocephala tibi- 
alis ; Tachin. : Cistogaster occidua. 

Silphium laciniatum (15:463-4). — Blooms June 21-August 
30 ; 29 visitors observed, July 16-August 6 ; Mas, Y. 

Long-tongued Bees (13) — Ap.: Apis; Bomb.: Bombias separatus 
$ ^, Bombus americanorum ^; Ceratin.: Ceratina ?; Megachil.: 
(?) : Megachile brevis, 6-dentata, Sayapis pugnata, sc; Epeol.: Tri- 



CHARLES no BERT soy 89 

epeolus concavus cT, coiicolor J* $; Enter.: Epiraelissodes obliqua (^, 
Melissodes agilis (^ $, ab, bimaeulata cT, coloradeiisis J* $, sc, IVj. 

Short-tonfjued Bees (5, $) — JIalict.: Ajjapostemon texanus sc, 
viridulus so, Chloralictus pilosus e, n, si)arsus c, n, Odontalictus 
c, n, 

Diptera (9) — Syrph.: AUo^n-aptu, Eristalis latirroiis, transvcr- 
sus, Tropidia mamillata ; liomhyli.: Anthrax altirnata f, n, (Jeron 
nifipes, Systoeehus; Conop.: Zodioii fulvifrons, ubliquelasciatum. 

Lepidoptera (2) — Nymphal.: Anosia; I'apilimi.: Eurjmus fq. 

Silphium perfoliatum (16: 176-7).— Blooms July 9-Septcmber 
12; 7;') visitors observed, July 2;i-Septi'mb('r 12; Mas, V. 

Long-toiifJTUod Bees (26) — Ap.: Apis sc, iVj ; liumh.: Bonibias 
scutellaris (^, separatus <^ $, Bombus americanorum c? $ $, sc, fq, 
consirailis $, sc, fq, irapatiens $, sc, fq; Ccratin.: Ceratina $, sc, fq; 
Megachil.: Mcgachilini: Megachilc brevis cT $, sc, mendica (^ $, sc, 
petulans (^ $, sc, fq, Sayapis pugnata $, sc, fq, sayi (^ ; Coelioxyini : 
Coelioxys gcrmana cf ; EpcuL: Triepeolus concavus <^ $, concolor 
cT 9y i*Q. lunatus cf, remigatus (^ $, fq, simplex c?; Eucer.: Epimelis- 
sodes obliqua J* $, sc, Melissotles agilis <^ ?, fq, bimaeulata (j*, colora- 
densis cT $, sc, simillima c^, trinodis (^ $, fq, vcrnoniae $, vernoni- 
ana c^ $, fq. 

Short-tongued Bees (14) — Ilalict.: Agapostemon radiatus (^ $, 
sc, splcndens J*, viridulus $, sc, fq, Chloralictus pilosus $, c, fq, n, 
sparsus $, c, fq, n, versatus $, c, n, Evylaeus pectoralis $, e, n, Ha- 
lictus lerouxii $, Odontalictus $, sc, Oxystoglossa confusa $; A»i- 
dren.: Pterandrena aliciae $, pulchella (^, f q ; Panufg.: Pseudo- 
panurgus labrosiformis (^, fq, rugosus c? $. 

Other Hymenoptera (3) — Sphcc: Spht-x proeera ; Scoli.: Scolia 
bicincta ; Einnen.: Leionotus dorsalis. 

Diptera (12) — Syrph.: Allograpta f, n, Eristalis tenax, trans- 
versus, Milesia f, n; Bomhyli.: Anthrax altemataX n, halcyon, Ex- 
oprosopa fasciata, Goron rufipes, Sparnopolius, Systoochus fq ; 
Conop.: Zillion oblifiucfaseiatum ; Tachin.: Archytas aterrima. 

Lepidoptera (20) — XyniphfiL: Anosia, Basilarchia an-hippus, 
astyanax, Charidrya.s, Polygonia interrogation's, Vanessa atalanta, 
cardui, huntera; Lycaen.: Chrj'sophanus ; Papilion.: Euphocades. 
EurjTnu.s, Ileraclides, Jasoniades, Laertias, Pontia; Ilesperi.: Atry- 
tone delaware, zabulon, Eparg^reus, Limochorcs taumas, Pholisora 
catuUus. 

Silphium tercbinthinaceum. — Blooms .Inly 2-.St"i)t('ml). r :'.0 : 13 
visitors observed, August 9-28 ; Mas, Y. 



90 FLOWERS AND INSECTS— XXVI 

Birds (1) — Trochil. : Troehilus. 

Long-tongued Bees (7) — Ap.: Apis sc, fq; Bomb.: Bombus 
americanorum ^, impatiens ^, sc; Ceratin.: Ceratina $, sc; Mega- 
chil. : Megachile brevis $ ; Eucer. : Epimelissodes obliqua $, sc, Me- 
lissodes coloradensis J*. 

Short-tongued Bees (2) — Halict.: Agapostemon radiatus J*, 
Odontalictus (^ 5, sc, fq. 

Other Hymenoptera (1) — Sphec: Sphex procera. 

Diptera (2) — Bombyli.: Sparnopolius, Systoechiis. 

Solidago canadensis (15:455-6). — Blooms August 1-October 
17 ; 218 visitors observed, August 1-October 10 ; Mis, Y. 

Long-tongued Bees (22) — Ap.: Apis sc, ab; Bomb.: Bombias 
scutellaris J* ^, separatus (^ ^, fq, Bombus americanorum ^ ^, ab, 
consimilis <^, impatiens c^ $ ^, sc, fq, Psithyrus variabilis $; 
Ceratin.: Ceratina $, sc; Stelid.: Stelidium ^ $, fq; Megachil.: 
Trypetini: Neotrypetes productus J*, truncatus (^ $, sc, ab; Os- 
miini : Ashmeadiella $, sc ; Coelioxyini : Coelioxys sayi i^ $ ; Nomad. : 
Holonomada placida cf $, Nomada vicina J*; Epeol.: Epeolus au- 
tumnalis 5, pusillus ^f $, Triepeolus pectoralis J*; Eucer.: Melis- 
sodes autumnalis 5, sc, boltoniae 2, sc, nivea 5, sc, simillima J*. 

Short-tongued Bees (28) — Halict.: Augochlora viridula J*, 
Chloralictus albipennis ?, sc, versatus J*, ab, Curtisapis coriacea 
5, sc, forbesii J* $, sc, Halictus lerouxii $, sc, Odontalictus $, sc, 
Seladonia J* 5, sc; Sphecodini: Machaeris stygia (^, Sphecodes 
heraelei $, Sphecodium cressonii J* 5, fq, smilacinae J*; Prosopid. 
(cf ?) : Prosopis illinoensis fq, pygmaea ab, sayi ab, ziziae sf, ab; 
Collet.: CoUetes americanus J* $, sc, ab, armatus J* $, sc, fq, com- 
pactus $, sc, eulophi J*; And7'en. (J* 5, sc, ab) : Andrena nubecula, 
Pterandrena solidaginis in cop, type; Panurg.: Calliopsis colora- 
densis J* $, sc, fq, in cop, Heterosarus $, sc, Perdita (^ ?, sc, fq, in 
cop, Pseudopanurgus asteris J* $, sc, fq, in cop, labrosiformis ^, 
solidaginis J* $, sc, ab, type. 

Other Hymenoptera (81) — Sphec: Ammobia ichneumonea, 
pennsylvanica, Isodontia apicalis, Priononyx atrata, thomae, Sceli- 
phron, Sphex vulgaris; Bemhic: Stizus; Scoli.: Elis interrupta, 
5-cincta, Scolia bicincta, nobilitata; Philanth.: Cerceris compacta, 
finitima, fulvipes fq, kennicottii, prominens, Eucerceris fq; Vesp.: 
Polistes annularis ab, pallipes ab, rubiginosus, variatus ab, Ves- 
pula cuneata, germanica; Eumen.: Ancistrocerus campestris, capra 
ab, catskillensis, tigris ab, Eumenes fratemus, Leionotus anormis, 
arvensis, foraminatus, scrophulariae fq, ziziae, Zethus; Crahron.: 
Anacrabro fq, Clytochrysus, Hypocrabro, Lindenius errans, Lopho- 



CHARLES ROBERTSON 91 

crabro, Solenius, Synothyrcopus, Xcstocrabro 6-maculatus; Oxy- 
hel.: Notoglossa americana fq, frontalis iVi, Oxybclus niger, 4-nota- 
tus; Pemphredon.: Mimesa; Lurr.: Larropsis I'q, Tachysphex 
acutus; Nyssoii.: Pscudoplisus plialeratus ; I'ompil.: Anoplius illi- 
noonsis type, Ceropalcs bii)Uiictata, dedans, fratirna, fulvipes, 
Cryptocheilus agenioides type, Ei)isyroii U\, Poceilopompilus inter- 
ruptus, navus, Pompiloidcs marginatus, subviolaceus, Priocnemoides 
I'ulvieomis, Psiimmoeharcs relativus; Tiphi.: Tiphia punctata; 
Chrysid.: Iledychrum violaceuin ; Chalcid.: Leucospis fq, Pcrilam- 
pus fulvicornis, robertsonii; Evani.: Foenus tarsatorius; Ichneu- 
mon.: Ceratosoma, Crcmastus rctiniae, Lampronota americana, 
varia, Limneria eurycreontis Metopius polycinctorius; Bracon.: 
Agathis areolata fq, type, Bracon simplex, venioniae, Chelonus, 
Iphiaulax ab. 

Diptcra (62) — Stratiumy.: Nemotelus; Syrph.: Allograpta, 
Chilosia punctulata, Eristalis bastardi, dimidiatus ab, llavipes, lati- 
frons, tenax, Ilelophilus latifrons, similis sf, ab, Mesogramma gemi- 
nata, polita fq, Milesia, Orthoneura nitida sf, Paragus bicolor, 
Platycliirus hyperboreus, quadratus, Spilorayia longicornis, quadri- 
fasciata, SjTitta, Syrphus americanus, Tropidia mamillata fq, 
Xanthogramma emarginata; Empid.: Parempis; Bumhyli.: Exo- 
prosopa decora, fascipennis, Geron nifipes, Sparnopolius, Toxo- 
phora ; Conop. : Conops brachyrrhynchus, sylvosus, xanthopareus, 
Oncomyia, Physocepliala texana, tibialis, Robertsonomyia ; Tacliin.: 
Actia, Amobia distincta type, Apinops, Belvosia unifasciata, Cisto- 
gaster occidua, Euryceromyia robertsonii type, Gymnosoma, Ilila- 
rella aristalis type, Ennyomma clistoides type, nigrifrons type, Pha- 
sioclista metallica type, Ocyptera tenuis, Pachyophthalmus signa- 
tus, Senotainia trilineata, Trichopoda plumipes; Sarcophag.: Heli- 
cobia helicis, Sarcophaga cimbicis, hunteri; Muse: Compsomjia fq, 
Graphomyia, Morellia, Pseudopyrellia ab, Stomoxys; AntKomy.: 
Calythea, Phorbia acra; Try pet.: Trypeta humilis. " 

Lepidoptera (8) — Nympfud.: Anosia, Vanessa cardui ; Lyccicn.: 
Chrj'sophanus ; Pajrilion.: Eur>Tnus; Ctenuch.: Scepsis; Noctu.' 
Carneades, Feltia, Ileliothis armiger ab. 

Coleoptera (14) — Bruch.: Bruchus obsoletus; Carab.: Callida 
f; Cerambyc: Cyllene decorus f, robiniae f, f q ; Chrysomel. (f); 
Diabrotioa r2-i)unctata ab. longiconiis ab, vittata: Coccinell.: Coc- 
cinella 9-notata, Ilippodamea glacialis fq, Megilla f; Lampyr.: 
Chauliognathus pennsylvanicus ab; Malach.: Collops; Melo.: Epi- 
cauta pennsylvanica f, ab; Scarabae.: Euphoria scpulchralis f. 

Hemiptera (3) — Caps.: Calocoris; Core.: Alydus pilosulus; 
Lygac: Lygacus. 



92 FLOWERS AND INSECTS— XXVI 

Solidago graminifolia (15:457-8). — Blooms July 29-Septem- 
ber 29 ; 44 visitors observed, September 4-25 ; Mis, Y. 

Long-tongued Bees (7) — Ap.: Apis se, ab; Bomh.: Bombias 
scutellaris ^, separatus c^, Bombus americanorum (^ ^, fq, im- 
patiens ^, sc, fq; Eucer.: Melissodes boltoniae $ se, nivea ?, sc, 
type. 

Short-tongued Bees (4, % se) — Halict.: Chloralictus versatus, 
Odontalictus ; Collet.: Colletes armatus; Andren.: Pterandrena 
solidaginis. 

Other Hymenoptera (14) — Sphec: Priononyx atrata; Bembic: 
Bembix nubillipennis, Megastizus; Scoli.: Elis 5-cincta, Scolia bi- 
cincta; PhilantJi.: Eucereeris; Vesp.: Polistes pallipes, variatus; 
Eumen.: Ancistrocerus capra ab, catskillensis, tigris; Crabron.: 
Hypocrabro, Xestocrabo 6-maculatus; Larr.: Larropsis; Pompil.: 
Priocnemoides fulvicornis. 

Diptera (9) — Syrph.: Helophilus latifrons, similis ab, Sphaero- 
phoria, Spilomyia 4-fasciata; Tachin.: Cistogaster oceidua, Para- 
didyma, Senotainia rubriventris ; Muse: Compsomyia, Pseudo- 
pyrellia. 

Lepidoptera (8) — NymphaL: Phyciodes, Vanessa huntera; 
Lycaen.: Chrysophanus, Everes; Papilion.: Eurymus; Arcti.: 
Utetheisa; Cramb.: Crambus; Noctu.: Heliothis armiger. 

Coleoptera (2) — Lampyr.: Chauliognathus pennsylvanicus ab; 
Melo. : Epicauta pennsylvanica ab. 

Solidago missouriensis (15:454-5). — Blooms June 26-August 
22 ; 69 visitors observed, July 21-August 19 ; Mis, Y. 

Long-tongued Bees (6) — Ap.: Apis; Ceratin.: Ceratina (^; 
Megachil.: Coelioxys 8-dentata 5; Epeol.: Epeolus bifasciatus $; 
Eucer.: Epimelissodes obliqua $, sc, fq, Melissodes boltoniae $, sc. 

Short-tongued Bees (10) — Halict.: Chloralictus albipennis $, sc, 
sparsus 5, sc, tegularis $, sc, versatus (^ $, sc, ab, Evylaeus pecto- 
ralis J* 5, sc, Odontalictus $, sc, ab, Oxystoglossa similis 5> Seladonia 
5; Sphecodini: Machaeris stygia $; Prosopid.: Prosopis pygmaea 
c? ?, ab. 

Other Hymenoptera (31) — Sphec: Ammobia ichneumonea, 
pennsylvanica, Priononyx atrata, Sphex nigricans, pictipennis, vul- 
garis; Scoli.: Elis interrupta, 5-cincta ab, Scolia bicincta fq; Phil- 
anth.: Cerceris clypeata, compacta, finitima, Eucereeris, Philanthus 
ventilabris; Vesp. Polistes variatus; Eumen.: Eumenes fraternus, 
Leionotus anormis, arvensis fq, histrionalis, vagus; Crabron.: Pro- 
tothyreopus bigeminus, Solenius; Oxybel.: Notoglossa amerieana, 
frontalis, Oxybelus 4-notatus ; Larr. : Larropsis f q ; Nysson. : Silaon ; 



CHARLES ROBERTSON 93 

Chrysid.: Hcdychrum wiltii ab; Chalciil.: Pcrilampus oyancus; 
Ichneumon.: Ceratosoma fq; Bracon.: Mierodus. 

Diptera (17) — Syrph.: MesoKrainnia marffinata, Syritta ; Em- 
pid.: Parempis; liomhyli.: Exoj)ros()pa fasciix'nnis f q ; Conop.: 
Z<Klion obli(iuefasciatum; Tachin.: Alophora aciieovcntris, Cisto- 
{jrastiT cK-cidua, CJymnusoma, (Jymiioprosopa, IMiorantha ma^fiia, 
pruinosa, Senotainia rubrivontris, trilincata fq, Siphopla^jia anom- 
ala, llaccidirostris ; Sarcopfni;/.: llclic(il)ia bdiris; Sarcopbaf^a 
hunteri. 

Colcoptera {4) — Chrysomel.: Diabrotica 12-punctaLa f; Lam- 
pyr.: ('haulioj?nathus pennsylvanicus; Mela.: Epicauta pennsyl- 
vaiiica f, ab, u ; h'hipiphor.: Myoditcs. 

Hemiptira (1) — Lyqae.: Lypaciis. 

July :](), 1909, the rollc)\vin<r i;{ species and 'V2 individuals were 
taken on the flowers: 

Lonp-ton«ruod Bees (1: 1) — M((/achil.: Coclioxys 8-dcntata 1. 

Short -t on i2:up<l Bees (3: 19) — J/alict.: Chloralietus sparsus 4, 
versatus 10; Prosopld.: Prosoi)is pypmaea 5. 

Other llymcnoptera (5: b)—lSphec.: Sphex vulgaris 1; I'hi- 
Umth.: Cereeris finitima 1; Eumen.: Leionotus histrionalis 1 ; Oiy- 
bel.: Notof?lossa amerieana 1 ; Nysson.: Silaon 1. 

Diptera (4: 7) — Syrph.: Mesoprramma mar^inata 1, Syritta 3; 
Kmpid.: Pan-mpis 1 ; Tachin.: Tistogaster ooeidua 2. 

Solidago nemoralis (15:457). — Blooms September 9-October 
IS; 92 visitors observed, September 19-Oetober 9; Mis, Y. 

Long-tongued Bees (8) — Ap.: Apis sc, ab; Bomb.: Bombias 
aurieomus cf, Bombus americanonim c? $ $, impatiens cT; Ceratin.: 
Oratina (^ $, fq ; Megachil.: Neotrypetes truncatus $, se, Megaehile 
brevis $, sc ; EpcoL: Triepeolus cressonii $. 

Short-tongued Bees (15) — I/alict.: Chloralictus illinoensis (^, 
versatus ^ $, sc, fq, Evylaeus pectoralis $, Odontalictus (^, Oxysto- 
filossa similis $, Paralictus platyparius $; Prosopid.: Prosopis 
pygniaea $, f q ; Collet.: Collet es americanus o" ?. s^". ab, armatus (^ 
9, KC, fq, compactus $, se, fq, eulophi $, sc; Andren.: Andrena nu- 
becula $, sc, ab, Pterandrena asteris $, sc; Panurq.: Pseudopanur- 
gus asteris $, sc, compositarum $. 

Other Hj-menoptera (28) — Sphec. Sphex pictipennis, procera, 
vulgaris; Philanth.: Cereeris clj'peata, finitima, kennicottii, Philan- 
thus punctatus; Vesp.: Polistes annularis ab. pallipes fq, rubigino- 
sus, variatus f q ; Eumen.: Ancisiroccrus catskillensis, tigris, Leio- 
notus anormis, foraminatus, histrionalis; Crahron.: Protothyreopus 
rufifemur. Solenius f q ; Oxyhel.: Notoglossa frontalis; Pemphre- 



94 FLOWERS AND INSECTS— XXVI 

don.: Mimesa; Larr.: Larropsis; Pompil: Anoplius illinoensis, 
Ceropales fraterna, fulvipes, Planiceps niger, Pompiloides margina- 
tus ; CJirysid. : Gonochiysis ; Bracon. : Chelonus. 

Diptera (27) — Syrph.: Mesogramma geminata, Sphaeroplioria, 
Spilomyia longicornis, Syritta sf , Syrphus americanus sf , arcuatus ; 
Bombyli: Spamopolius, Systropus; Conop.: Oncomyia; Tachin.: 
Archytas aterrima, Gymnosoma, Pachyophthalmus signatus fq, Po- 
lidea, Trichopoda pennipes, Xanthomelana ; SarcopJiag.: Helicobia 
helicis, Sarcophaga cimbicis, hunteri; Muse: Compsomyia, Lucilia 
caesar, sericata, Musca, Pseudopyrellia, Stomoxys ; Oscin. : Chlorops 
proxima ; Try pet. : Trypeta humilis, Solaris. 

Lepidoptera {6)—NympJial.: Anosia; Papilion.: Eurema, Euiy- 
mus ; Arcti. : Utetheisa ; Ctenuch. : Scepsis ; Noctu. : Heliothis armi- 
ger. 

Coleoptera (5) — Ceramhyc: Cyllene robiniae f; Chrysomel.: 
Diabrotica longicornis; Coccinell.: Coccinella 9-notata f; Lampyr.: 
Chauliognathus pennsylvanieus ; Melo.: Epicanta pennsylvanica f, 
ab, in cop. 

Hemiptera (3) — Caps.: Lygus; Core.: Alydus pilosulus; Ly- 
gae.: Lygaeus. 

October 4, 1909, the following 17 species and 56 individuals were 
taken on the flowers : 

Long-tongued Bees (1 : 21) — Ap.: Apis 21. 

Short-tongued Bees (2: 10) — Andren.: Andrena nubecula 9; 
Panurg. : Pseudopanurgus asteris 1. 

Other Hymenoptera (4: 12) — Vesp.: Polistes annularis 9, vari- 
atus 1 ; Ewmen.: Ancistrocerus eatskillensis 1, tigris 1. 

Diptera (5: 5) — SyrpJi.: Mesogramma geminata 1; Bombyli.: 
Sparnopolius 1 ; Tachin. : Xanthomelana 1 ; Miirsc. : Lucilia caesar 1, 
Pseudopyrellia 1. 

Lepidoptera (1: 1) — Ctenuch.: Scepsis 1. 

Coleoptera (3: 6) — Ceramhyc: Cyllene robiniae 1; Chrysomel.: 
Diabrotica longicornis 3 ; Lampyr. : Chauliognathus pennsylvanieus 
2. 

Hemiptera (1 : 1) — Lygae.: Lygaeus 1. 

Solidago rigida. — Blooms August 23-October 7; 52 visitors 
observed, September 4-25 ; Mas, Y. 

Long-tongued Bees (9) — Ap.: Apis; Bomb.: Bombus ameri- 
canorum c^ $ ^, ab, impatiens c^ ? ^, sc, Psithyrus variabilis $; 
Megachil. : Megachile brevis $, sc, Xanthosarus $ ; Eucer. : Epime- 
lissodes obliqua $, sc, Melissodes autumnalis ^ $, sc, ab, nivea ?. 



CHARLES ROBEIiTSON 95 

Short-tonnriied Bees (3) — Ilalict.: Chloralictus vcrsatus $; Col- 
let.: Colletes americanus $, se, compactus (^. 

Other llynu'iioptera (IG) — Sphec: Priononyx atrata, tliomac, 
Sphex procera ; Phihnith.: Cerceris compacta, prominens; Vesp.: 
Polistes annularis, pallipcs, variatus; Eumcn.: Anoistrocerus eapra, 
tigris fq, Leionotus arvensis, foraminatus, scroplmlariae; Crahron.: 
Protothyreopus rufifcmur, Solcnius; Pompil.: Ageniella petiolata. 

Diptera (13) — Syr ph.: Paragus bicolor, tibialis f, n, Sphaero- 
phoria, Syritta; Bomhyli.: Sparnopolius ab; Conop.: Stylogaster 
biannulata ; Tachin.: Cistofjaster oceidua, Linnaemyia, Pachy- 
ophthalmus sifjnatus, Spallanzania ; Sarcophag.: Sarcojjhapa cim- 
bicis; Muse: Compsomyia, PsciKlopyrellia. 

Lepidoptera (7) — Nyynphal.: Anosia, Basilarcliia ardiippus; 
Lycaen.: Evores, Heodes; Papilion.: Eurynius; Ilcspcri.: Polites; 
Noctu.: Drastcria erechtea. 

Coleoptera (4) — Chrysomcl. (f, n) : Diabrotica 12-i)unctata, 
lon^cornis ab; Lampyr.: Chauliognathus pcnnsylvanicus ab; 
Melo.: Epicauta pennsylvanica f, ab, n. 

September 18, 25, 1909, the follo\\'ing 29 species and 14G in- 
dividuals were taken on the flowers: 

Long-tongued Bees (6:51) — Ap.: Apis 2; Bomb.: Bombus 
amerieanonira 35, impatiens 3, Psithyrus variabilis 1; Mcgachil.: 
Megaehile brevis 1; Eucer.: Melissodes autumnalis 9. 

Short-tongued Bees (2:2) — Collet.: Colletes americanus 1, 
compactus 1. 

Other Hymenoptera (9:17) — Sphec.: Sphex procera 2; 
Philanth.: Cerceris compacta 1; Vesp.: Polistes annularis 1, pal- 
lipcs 1, variatus 2; Eumen.: Ancistrocerus capra 2, tigris 5, Leiono- 
tus foraminatus 2, scrophulariae 1. 

Diptera (5:22) — Syrph.: Paragus tibialis 1, Sphaerophoria 2; 
Bomhyli.: Sparnopolius 17; Tachin.: Spallanzania 1 ; Muse: Comp- 
somyia 1. 

Lepidoptera (3:4) — Lycaai.: Everes 1. Heodes 1; Noctu.: 
Drastcria erechtea 2. 

Coleoptera (4:50; 3:25 n) — Chrysomcl.: Diabrotica 12-punc- 
tata 1, longicomis 11; Lampyr.: Chauliognathus pcnnsylvanicus 
25; Melo.: Epicauta pennsylvanica 13, n. 

Solidago serotina. — Blooms August 24-Scptembcr 27 ; seven 
visitors observed, August 30-September 20; Mas (Mis), Y. 

Long-tongued Bees (3) — Bomb.: Bombus americanorum 5, 
consimilis §; Eucer.: Melissodes siraillima (^. 

Short-tongued Bees (1) — Panurg.: Pseudopanurgus asteris $, sc. 



96 FLOWERS AND INSECTS— XXVI 

Other Hymenoptera (1) — Crahron.: Xestocrabro 6-inaculatus. 
Diptera (1) — Syrph.: Spilomyia 4-fasciata. 
Coleoptera (1) — Ceramhyc: Cyllene robiniae f, n. 

Solidago speciosa. — Blooms September 12-October 17; nine 
visitors observed, September 23-October 6; Mas, Y. 

Long-tongued Bees (5) — Ap.: Apis fq; Bomb.: Bombias auri- 
comus 5, Bombus amerieanorum ^ §, fq, impatiens ^ % Psithyrus 
variabilis $. 

Other Hymenoptera (1) — Vesp.: Polistes variatus, 

Lepidoptera (2) — Nymphal.: Vanessa hnntera; Ctenuch.: 
Scepsis fq. 

Coleoptera (1) — Lampyr.: Ohauliognathns pennsylvanicus fq. 

Solidago ulmifolia. — Blooms August 20-October 7; 52 visitors 
observed, August 22-September 20 ; Mis, Y. 

Long-tongued Bees (7) — Bomh.: Bombus impatiens (^; 
Megachil. : Neotrypetes truncatus J* $, sc, fq ; Megaehile brevis <^ ; 
Eucer. ($, se) : Melissodes autumnalis, boltoniae, simillima, trinodis. 

Short-tongued Bees (15) — Halict.: Chloralietus sparsus (^ ?, 
sc, Evylaeus pectoralis $, sc ; Sphecodini : Sphecodium cressonii 
J* $; Prosopid.: Prosopis illinoensis 5, pygmaea $, zdziae J* $; 
Collet.: Colletes americanus $, sc, armatus J* $, sc; Andren.: An- 
drena nubecula (^ $, sc, fq, Pterandrena asteris J* $, sc, solidaginis 
?, sc, fq; Panurg. (sc) : Heterosarus ?, Perdita $, Pseudopanurgus 
asteris cf $, ab, compositarum ?. 

Other Hymenoptera (14) — Sphec: Sphex vulgaris; Philanth.: 
Cerceris astarte, prominens; Vesp.: Polistes annularis, pallipes; 
Eumen.: Ancistrocerus campestris, tigris, Eumenes fraternus, 
Leionotus scrophulariae ; Crahron.: Rhopalum seutellatum, Syno- 
thyreopus; Larr.: Larropsis; Chrysid.: Hedychrum violaceum; 
Nysson.: Alyson. 

Diptera (15) — Syrph.: Allograpta, Helophilus similis, Spil- 
omyia longicornis, Syritta, Syrphus americanus; Empid.: Par- 
empis; Bombyli.: Anthrax alternata f, Exoprosopa decora, Geron 
inifipes, Sparnopolius ; Tachin.: Archytas aterrima, Ennyomma 
nigrifrons, Peleteria, Siphona; Muse: Morellia. 

Hemiptera (1) — Caps.: Lygus. 

Taraxacum officinale (int.). — Blooms March 23-November 27; 
18 visitors observed, March 28-May 28 ; Mis, Y. 

Long-tongued Bees (5) — Ap.: Apis se, fq; Bomh.: Bombus 
impatiens 5; Megachil.: Ceratosmia J*, Osmia pumila J*; Nomad.: 
Nomada denticulata J*. 



CHARLES ROBERTSON 97 

Short-tongued Bees (6) — Ilalict. ($) : Agapostemon radiatus sc, 
Chloralictus versatus fq, Odontalictus se; Andren. ((^) : Andrena 
dunningii, Opandrena crcssonii, miserabilis fq. 

Diptera (G) — Syrph.: Eristalis aeneus; Bonihyli.: Bombylius 
major, pulehellus; Conop.: Alyopa vesiculosa; Muac: Pscudopy- 
rellia; Anthomy.: Phorbia acra. 

Lepidoptcra (1) — NympJuil.: X'anessa huiitora. 

Verbesina helianthoides (15: 471-2).- lilooms June 6-August 
10; 40 visitors ol)si-rvcd, June 10-July 11; Mas, Y. 

Long-tongiicd Bees (21) — Ap.: Apis se, fq; Bomb.: Bombias 
auricomus $, Bombus americanorum $ $; Ceratin.: Ceratina $, 
fq; MegachiL: Tiypetini: Neotrypetes truneatus $, sc; Osmiini : 
Aslimeadiella $, sc, Hoplitis $; Megachilini : Cyphopyga <^ $, 
^legaehile brevis (^ $, sc, fq, mendiea $, sc, petulans (^ $, sc, 6-den- 
tata 5> Sayapis pollicaris (^, pugnata (^ $, sc, fq, Xanthosanis (^; 
Coelioxyini: Coelioxys alternata c^, 8-dcntata c^, rufitarsis c^; 
Epeol.: Epeolus bit'asciatus cT ; Eucer.: Epimelissodes obliqua $, 
Tetralouia dilecta $. 

Short-tongued Bees (14) — Ilalict.: Agapostemon viridulus $, 
Chloralictus pilosus $, sc, sparsus $, c, n, versatus $, .sc, Curtisapis 
eoriacea $, Evylaeus arcuatus $, Halictus lerouxii $, sc, Odontalic- 
tus (^ $, sc, Oxystoglossa pura c^, similis $, sc; Collet.: Colletes 
eulophi $, sc; Andren.: Pterandrena rudbeckiae $; Panurg.: Cal- 
liopsis andreniformis $, sc, Pseudopanurgus albitarsis (^ $, sc. 

Other Ilymenoptera (4) — Sphee. : Sphcx nigricans fq, pictipen- 
nis, procera fq; Bembic: Stictiella. 

Diptera (4) — Syrph.: Eristalis transversus, Mesogramma mar- 
ginata f, n; Bombyli.: Anthrax parvicornis, Systoechus. 

Lepidoptcra (3) — Nymphal.: Phyciodes; Ilcspcri.: Thanaos 
juvenalis; Ctenuch.: Scepsis. 

Vemonia fasciculata (15:451-2). — Blooms July 1-October 1; 
45 visitors observed, July 21-Septembcr 24; ^las, R. 

Long-tongued Bees (20) — Ap.: Apis; Bomh.: Bombia.s auri- 
comus $ ^, scparatus (^, Bombus americanorum (^ v. ab, Psithyrus 
variabilis c^ $, fq ; Ceratin.: Ceratina $, sc; Mcyaikd.: Neotrypetes 
truneatus $, sc; Sayapis sayi (^ $, Xanthosanis <^ $, sc; Epeol.: 
Triepeolus concavnis <^ $, ab, ncvadensis c?, fq, remigatus f^ $; 
Eucer.: Epimelissodes atripcs $, obliqua <^ $, sc, ab, Mcli.ssodes 
agilis (^, bimaculata (^, nivea c^, fq, vcmoniac (^ $, sc, ab, oligolege, 
typt", vemoniana cT ?> ^<'» »^. oligolege, type: Phnphor.: Emphor $. 



98 FLOWERS AND INSECTS— XXVI 

Short-tongued Bees (6) — Halict.: Agapostemon radiatus J*, 
viridulus (^, Chloralictus pilosus $, sc, pruinosus $, sc, versatus 
.$, c, Odontalictus % c. 

Diptera (3) — Bovihyli.: Exoprosopa fasciata ab, Systoechus, 
Systropus. 

Lepidoptera (16) — Nymphal.: Anosia, Argynnis; Lycaen.: 
Uranotes; Papilion.: Callidryas, Euphoeades, Eurymus ab, Hera- 
elides, Jasoniades, Papilio, Pieris; Hesperi.: Epargyreus, Euphyes 
metacomet, Limochores manataaqua, taumas fq, Polites; Noctu.: 
Leucania. 

CONVOLVULACEAE 

Convolvulus sepium (13:581). — Blooms May 27-September 
21 ; 10 visitors observed, June 16- July 7 ; Ma, W. 

Long-tongued Bees (8) — Bomh.: Bombus americanorum 5 $, 
ab ; Ceratin. : Ceratina 2 ; Megachil. : Alcidamea truneata J* ; Eiicer. : 
Melissodes bimaeulata ,^, Peponapis $, Tetralonia dileeta ?, fq; 
Emphor.: Melitoma (^ $; AnthopKor.: Anthemoessa $. 

Short-tongued Bees (1) — Halict.: Agapostemon viridulus $. 

Coleoptera (1) — Scarahae.: TricMus piger f, n. 

Cuscuta cephalanthi. — Blooms September 15-October 3; one 
visitor observed, September 15 ; Mis, W. 

Short-tongued Bees (1) — Halict.: Curtisapis coriacea $. 

Cuscuta glomerata. — Blooms July 21-September 17; one vis- 
itor observed, September 8, 17 ; Mis, W. 

Short-tongued Bees (1) — Collet.: Colletes eulophi $. 

Ipomoea hederacea (int). — Blooms July 23-October 26; three 
visitors observed, July 29'--September 21 ; Ma, R. 

Long-tongued Bees (3) — Bomh.: Bombus americanorum (^ ^, 
fq, consimilis ^; Eucer.: Peponapis <^. 

Ipomoea pandurata (13:581). — Blooms June 24-September 
20; 18 visitors observed, July 11-September 9; Ma, W. 

Long-tongued Bees (14) — Ap.: Apis; Bomh.: Bombias auri- 
comus ^, fq, separatus J* ^, Bombus americanorum J* ? ^, sc, fq, 
consimilis $; Epeol.: Triepeolus remigatus $; Eucer.: Cemolobus 
ipomoeae J* $, sc, ab, type, oligolege?, Epimelissodes atripes $, 
obliqua J^, Melissodes bimaeulata (^ $, sc, ab, Peponapis J* $, ab, 
Xenoglossa <^ ?, ab; Emphor. {^ $) : Emphor fq, Melitoma sc, ab. 

Lepidoptera {^)— Papilion.: Euphoeades, Laertias; Hesperi.: 
Atrytone zabulon; Sphing.: Sphinx. 

Ipomoea purpurea (int). — Blooms June 25-October 26; nine 
visitors observed, August 16-October 7; Ma, R. 



CHARLES ROBERTSON 99 

Birds {l)—Trochil.: Trochilus. 

Long-tongued Bees (6) — Bomb.: l{()inl)iis anicrieanorum ^, l'<i, 
consimilis $ $; Eucer.: Melissodes bimaeulata $, Peponapis (^ $, 
Xenoglossa $; Emphor.: Melitoma <^ $, sc, ab. 

Short-tongued Bees (1) — Ilalict.: Agapostenion viridulus ^. 

Lepidoptera (1) — Sphituj.: Deilephila. 

CORNACEAE 

Cornus amomum. — Blooms May 29-July 26; 96 visitors ob- 
sened, May 21)-Jime 11; Mis, W. 

Long-tongued Bees (9) — Ap.: Apis sc, fq ; liomh.: Bombias sep- 
aratus $, Bombus amcrieanorum $, sc ; Ceratin.: Ceratina (^ $, sc, 
fq; Megachil.: Megachile brevis $; Xylocop.: Xylocopa $, sc; 
Nouuul.: Holonomada aifabilis cT, I'q ; Euccr.: Tetralonia rosae ^\ 
Anthophor.: Anthemoessa J*. 

Short-tongued Bees (23) — Ilalict. ($) : Agapostemon radiatus 
sc, fq, viridulus sc, Augochlora fervida, Chloralietus pilosus sc, 
I)ruinosus, tegularis, versatus sp, fq, Curtisapis forbesii, Evylaeus 
pectoralis se, llalictus parallelus, Odontalictus sc, Oxystoglossa 
confusa, similis sc; Prosoind.: Prosopis illinoensis % pygmaea (^; 
Aridren.: Andrena platyparia <^ $, sc, sayi $, sc, fq, Opandrena 
eressonii $, sc, fq, miserabilis $, Trachandrcna claytoniac $, erataegi 
5, heraclei $, sc, fq, hippotes $. 

Other Hymenoptera (15) — Sphec: Isodontia apicalis, Sphex 
nigrieans, vulgaris; Philanth.: Cerceris finitima ; Vesp.: Polistes 
variatus; Eiuncn.: Leionotus anormis, arvensis, foraminatus fq, 
illinoensis, leueomelas, ziziac, Zcndalia zendaloides ; Crahron.: 
Solenius; OxybcL: Notoglossa americana, frontalis. 

Diptera (31) — Syrph.: Allograpta, Chrysogaster nigripcs, Eris- 
talis dimidiatus, latifrons, transvcrsus, Mallota cimbiciformis, 
Mesogramma marginata, Myiolepta nigra, Orthoneura nitida in cop, 
I)ictipennis, Sphaerophoria, Syritta ; Bmnhyli.: Argj-ramoeba albo- 
fasciata f; Conop.: Zodion fulvifrons; Tachin.: Archyta.s analis, 
aterrima, Bclvosia bifasciata, Blepharipeza, Linnaemyia, Phorantha 
purpurascens; Sarcophag.: Calliphora erythrocephala, Helicobia 
helicis, Sarcophaga cinibicis; Muse: Lucilia caesar, scricata, Pol- 
lenia, Pseudopyrellia ; Anthomy.: Anthomyiella, Calythca, Phorbia 
acra fq, platura fq. 

Lepidoptera (16) — XyynpJuil.: Argynnis, Basilarchia archippus, 
astyanax, Phyciodes, Vanessa atalanta, huntera ; Lycacn.: Chr>'so- 
l)hanus, Cyaniris; Pairilion.: Ileraelides, Jasoniades, Laertia-s; lies- 
peri.: Atrytone zabulon, Epargj'reus, Limochores taumas, Politcs; 
Ctenuch.: Scepsis. 



100 FLOWERS AND INSECTS— XXVI 

Coleoptera (2) — Curculion.: Centrinus scuteUum-album ; Mor- 
dell: Mordella marginata in cop. 

June 1, 1911, the following 34 species and 97 individuals were 
taken on the flowers : 

Long-tongued Bees (4:21) — Ap.: Apis. 4; Bomb.: Bombus 
americanorum 6 ; Ceratin. : Ceratina 10 ; Xylocop. : Xylocopa 1. 

Short-tongued Bees (16: 56) — Halict.: Agapostemon radiatus 4, 
viridulus 13, Chloralictus pilosus 2, tegularis 1, versatus 3, Cur- 
tisapis forbesii 1, Evylaeus pectoralis 3, Halictus parallelus 2, 
Oxystoglossa confusa 1, similis 2; Prosopid.: Prosopis illinoensis 1 ; 
Andre7i.: Andrena platyparia 4, sayi 7, Opandrena cressonii 2, 
miserabilis 3, Trachandrena heraclei 7. 

Other Hymenoptera (2: 5) — Eumen.: Leionotus foraminatus 1; 
Oxyhel.: Notoglossa americana 4. 

Diptera (6:7) — Syr ph.: Allograpta 1, Chrysogaster nigripes 1, 
Eristalis transversus 2 ; Bomhyli. : Argyramoeba albofasciata 1 ; 
Sarcophag. : Sarcophaga cimbicis 1 ; Anthomy. : Phorbia platura 1. 

Lepidoptera (5:7) — Nymphal.: Argynnis 1; Papilion.: Hera- 
clides 1, Jasoniades 3, Laertias 1; Hesperi.: Epargyreus 1. 

Coleoptera (1:1) — MordelL: Mordella marginata 1. 

Cornus florida (10 : 232-3).— Blooms April 22-May 8; 29 vis- 
itors observed on April 23 ; Mis, W. 

Long-tongued Bees (3) — Bomh.: Bombias separatus $; Mega- 
chil. : Osmia pumila $, se ; Nomad. : Nomada illinoensis t^. 

Short-tongued Bees (15) — Halict. (5) : Agapostemon radiatus, 
Chloralictus obscurus sc, pilosus sc, sparsus sc, fq, versatus, zephy- 
rus, Curtisapis coriacea, Evylaeus foxii sc, Oxystoglossa confusa sc, 
pura sc, Seladonia sc, fq; Andren.: Andrena carlini 5, Opandrena 
miserabilis (^ ?, sc, fq, Trachandrena claytoniae $, sc, f q, rugosa (^ $. 

Other Hymenoptera (2) — Vesp.: Polistes pallipes; Eumen.: 
Leionotus foraminatus. 

Diptera (7) — Syrph.: Criorhina umbratilis, Mesogramma mar- 
ginata; Empid.: Empis humilis fq; Bomhyli.: Bombylius major fq, 
pulchellus; Lonchae.: Lonchaea aberrans. 

Lepidoptera (1) — Hesperi.: Thanaos juvenalis, 

Coleoptera (1) — Ceramhyc: Molorchus. 

Cornus paniculata (10 : 233-5).— Blooms May 12- June 24; 82 
visitors observed, May 12-June 8 ; Mis, W. 

Long-tongued Bees (7) — Ap.: Apis sc, fq; Bomb.: Bombias 
auricomus $, e, Bombus americanorum $, c; Ceratin.: Ceratina 
$, sc; Nomad,: Holonomada affabilis $, superba ?; Eucer.: Tet- 
ralonia dilecta (^ $, sc. 



CHARLES ROUERTSOS lUl 

Short -t on g:iic(l Bees (24) — Ilalict. ($) : Agapostemon radiatus 
so, viridulus se, Cliloralietus pilosus, spai-sus sc, te^ularis f(j, ver- 
satus sc, fq, EvA'laeus pectoralis sc, Oxystoplossa confusa sc, similis; 
Prosopid.: Prosopis crataegi <^, culophi c?, pypmaea c^, sayi $, 
ziziae (^; Andren.: Andrena carlini $, corni $, type, paniculatac $, 
se, platyparia (^ $, sc, ab, sayi $, sc, Opandrena cressoiiii $, sc, 
Traehandrena claytoniae $, sc, fq, forbesii $, hippotes $, rug- 
osa $, sc. 

Other Hymenoptera (13) — Sphec: Chalybion, Sceliphron; 
Eumen.: Aneistrocerus eampestris, uniia.sciatus, Eumcnes frater- 
nus, Leionotus i'oraminatus, ziziae, Monobia ; Crahron.: Lindenius 
errans, Soleiiius; OxyhcL: Notoglossa americana; Pompil.: Cero- 
pales fulvipcs; Chalcid.: Smiera torvina. 

Diptera (32) — Syrph.: Eristalis aeneus. dimidiatus, transversus, 
Mallota cimbiciformis, Orthoncura nitida, Pipiza pulchella, Syrphus 
americanus, Tropidia mamillata; Empid.: Empis distans, levicula, 
Parempis; Conop.: Oneomyia; Tachin.: Archytas analis fq, 
aterrinia, Belvosia bifasciata, unifasciata, Chaetophleps, Euphoro- 
cera elaripennis fq, Exorista confinis, Frontina frenchii, Para- 
didmya, Phorantha purpurascens, Spallanzania ; Sarcophag.: 
Helicobia helicis, Sareophaga bullata ; Muse: Graphomyia, Luoilia 
caesar. sericata, Morellia ; Anthoviy.: Anthomyiella, Phorbia aera ; 
Ortal.: Camptoncura. 

Lepidoptera (2) — Xymphal.: Vanoss^i atalanta; Papilion.: 
Iphiclides. 

Coleoptera (8) — Ccrambyc: Strangalia; Lampyr.: Podabrus 
tomentosus fq, Telephonis flavipes fq; MordelL: Mordella margi- 
nata fq, Pentaria; Scarahac: Euphoria fulgida. Triehius nfTiiiis in 
cop, piger fq. 

Crucifekae 

Arabis dentata. — Blooms April 5-May 31 ; 48 species and 254 
individuals obser\-cd, April 24-May 15 ; ^11, W. 

Long-tongued Bees (12: 54) — Ap.: Apis sc, 34; Bomb.: Horabias 
separatus $, 2, Borabus impaticns $, 3; Ceratin.: Ceratina (^, 1, 
Zaodontomerus cT, 2 ; Megachil.: Osmia atriventris 9, 2, pumila 9. 1 ; 
Nomad.: Gnathias cuneatus (^ $, 2, ovatus $, 2, xanthoparius c{, 2, 
Xanthidium luteolum 9, 1; Eucer.: Tetralonia bclfragei cT 9. 2. 

Short-tongU('<l Bees (25: 177) — Ilalict. (9) : Agapostemoii radi- 
atus 3, Augoehlora viridula 25, Chloralictus caeruleus 1, obscurus 2, 
sparsus sc, 7, tegularis sc, 1, versatus 11, zepiiyrus 9, Curtisapis 
coriacea 7, Evyleaus foxii sc, 27, pectoralis sc, 7, 4-maculatus 1, 
Ualictus lerouxii 2, Oxystoglossa confusa S. pura 12, similis sc, 6, 



102 FLOWERS AND INSECTS— XXVI 

Seladonia sc, 4 ; Sphecodini : Proteraner J*, 6 ; Prosopid. : Prosopis 
sayi J*, 1; Andren.: Andrena oarlini $, 1, geranii J*, 3, nasonii $, 
se, 9, Opandrena cressonii J* 5, sc, 10, miserabilis 5, 1, personata 

^ 2, 13. 

Other Hymenoptera (2: 2) — Eumen.: Leionotus foraminatus 1; 
Sapyg.: Sapyga 1. 

Diptera (9:21) — Syrph.: Mesogramma geminata 4, Syrphus 
americamis f, 6, ribesii f, 5, torvus f, 1 ; Empid. : Empis humilis 1, 
nuda 1, Pachymeria 1; Boonbyli.: Bombylius major 1; Tachin.: 
Siphona 1. 

Arabis laevigata. — Blooms April 10-May 18 ; 13 species and 53 
individuals observed, April 23, 27, May 5 ; Mi, W. 

Long-tongued Bees (4:8) — Ceratin.: Ceratina $, 4, Zaodon- 
tomerus J*, 2; Megachil.: Osmia pumila 5, 1; Nomad.: Gnathias 
ovatus 5, 1. 

Short-tongued Bees (7:40, $) — Halict.: Cliloralictus obscurus 
1, versatus sc, 9, Evylaeus 4-maculatus 1, Oxystoglossa confusa sc, 8, 
pura 1 ; Andren. : Andrena arabis sc, 18, type, nasonii se, 2. 

Diptera (2: 5) — Syrph.: AUograpta f, 1; Tachin.: Siphona 4. 

Arabis virginica. — Blooms March 20-May 15 ; 11 visitors ob- 
served, April 20, May 3, 8; Mi, W. 

Long-tongued Bees (1) — Nomad.: Gnathias ovatusi ?. 

Short-tongued Bees (9) — Halict. ($) : Agapostemon radiatus, 
Chloralictus versatsus, zephyrus, Halictus lerouxii, Oxystoglossa 
confusa, similis, Seladonia; Andren.: Opandrena cressonii $; 
miserabilis J*. 

Diptera (1) — Anthomy.: Anthomyiella. 

Capsella bursa-pastoris (int). — Blooms March 20-December 1; 
60 visitors observed, April 16-June 1 ; Mi, W. 

Long-tongued Bees (4) — Ap.: Apis fq; Megachil.: Prochelos- 
toma J*; Nomad.: Nomada parva $; Eucer.: Tetralonia dilecta J*. 

Short-tongued Bees (22) — Halict. (5) : Chloralictus coreopsis 
sc, cressonii, sparsus sc, ab, tegularis se, versatus sc, zephyrus sc, 
Curtisapis forbesii sc, Dialictus sc, Evylaeus foxii sc, fq, pectoralis 
sc, Halictus lerouxii sc, Odontalictus, Oxystoglossa similis sc, fq, 
Seladonia sc; Prosopid.: Prosopis pygmaea (^; Andren.: Andrena 
arabis $, sc, fq, nasonii $, sc, Opandrena cressonii J* $, sc, fq, 
miserabilis cf, personata <^ $, sc, fq, Trachandrena claytoniae J* $, 
sc, forbesii <^, 

Other Hymenoptera (1) — Vesp.: Polistes pallipes. 



CHARLES ROBERTSON 103 

Diptera (27) — Syrph.: Allo«,n-ai)ta, Eristalis diinidiatus sf, 
moigenii fq, Helophilus latifrons, similis, Mallota einibiciformis, 
Melanostoma mellinum, Mesogramma geminata, marginata, 
Sphaerophoria, Syritta si"; Bombyli: Aldrichia sf; Conop.: On- 
comyia, Zcxlion fulvifrons; Tachin.: Apinops, Gonia capitata, G>Tn- 
noprosopa, Peleteria, Siphona I'q ; Sarcophig.: Cynomyia iq, Heli- 
cobia helieis, Sairophaga sinuata; Muse: Lucilia carsar, scricata, 
sylvarum fq; Aiiihomy.: I'liorhia.acra, platura. 

Lcpidoptora (6) — NymphaL: Charidryas, Phyciodos; Papilion.: 
Pontia; Jlcspcri.: Pholisora catullus, Politcs, Thanaos niartialis. 

The first 100 individuals taken on the llowers, May 11, l.'J, IT), 
17, 191G, showed species and individuals as follows: 

Short-tongucd Bees (12:63) — Ilalict.: Chloralietus coreopsis 
1, sparsus 26, tegularis 1, versatus 2, zephyms 1, Dialictus 1, Ex'y- 
laeus foxii 3, pectoralis 9, Oxystoglossa similis 2; Andren.: An- 
drena arabis 7, Opandrena cressonii 1, personata 9. 

Diptera (13: 37) — Syrph.: Eristalis meigenii 5, Mallota cimbici- 
formis 1, Mesogramma gcminata 1, marginata 4, Syritta 4; 
Bombyli.: Aldrichia 1; Tachin.: Gymnoprosopa 1, Siphona 6; 
Muse: Lucilia caesar 2, sericata 1, sylvarum 7; AiitJwmy.: Phor- 
bia acra 3, platura 1. 

Cardamine bulbosa (2: 298-9).— Blooms Ai)ril 22-May 30; 49 
visitors observed, ^lay 2-21 ; Mi, W. 

Long-tongued Bees (14) — Bmnh.: Bombias auricomus $; 
Ceratin.: Ceratina <^ $, sc, fq, Zaodontomcrus f^; McgachiL: Alci- 
damea simplex J*, Ceratosmia (^ $, Diceratosmia $, sc, Gnathosmia 
$, Osmia atriventris cf $, fq, collinsiae c^, cordata ^, ab, type, 
pumila c? $, sc, ab; Nomad.: Ilolonomada superba (^ 9, Nomada 
dcnticulata J'; Eucer.: Tetralonia dilecta (^ $. 

Short -tongued Bees (U)— Ilalict. ($) : Chloralictus pilosus sc, 
pruinosus sc, fq, versatus sc, fq, Evylaeus pectoralis sc, fq, Odon- 
talictus, Oxystoglossa confusa, similis, Seladonia f q ; Prosopid.: 
Prosopis pygmaea <^; Andren.: Andrena arabis $, sc, ab, sayi $, 
lomclissa $, Opandrena miserabilis $, personata (^. 

Diptera (13) — Straiiomy.: Xcmotelus; Syrph.: Mesogramma 
marginata, Orthoneura pictipennis, Spjiacrophona ; Empid.: Empis 
avida, nuda, otiosa; Bombyli.: Bombylius atriceps fq, major; 
Conop.: Myoi)a vesiculosa, Zodion fulvifrons; Muse: Lucilia caesar; 
Anthomy.: Phorbia acra. 

Lepidoptera (8) — NymphaL: Phyciodes, Vanessa atalanta ; 
Lycacn.: Evcrcs; Papilion.: Eurymus, Pieris, Xanthidia; Hcspcri.: 
Epargyrcu.s, Pholisora catullu.s. 



104 FLOWERS AND INSECTS— XXVI 

Dentaria laciniata. — Blooms April 2-May 2; 39 visitors ob- 
served, April 2-28 ; Mi, W. 

Long-tongued Bees (19) — Ap.: Apis se, fq. ; Bomb. (?) : Bom- 
bias separatus, Bombus amerieanorum, impatiens, ridingsii; Cera- 
tin. : Ceratina (^ ; Megachil. : Centrosmia (^ 5, Ceratosmia c^, Osmia 
pumila (^; Nomad.: Gnathias cuneatus (^, ovatus J*, Nomada cres- 
sonii J*, illinoensis J*, sayi <^ $, fq, Phor J*, Xanthidium dentariae 
<^, fq, type, luteoloides J*, fq, luteolum J*, fq; Eucer.: Tetralonia 
belfragei J* $. 

Short-tongued Bees (14) — Halict. ($) : Agapostemon radiatus, 
Chloralictus pilosus, sparsus sc, versatus, Evylaeus foxii, Halictus 
lerouxii sc, Odontalictus ; Andren.: Andrena carlini J* $, fq, pruni 
J*, sayi ^ $, fq, tridens J*, Opandrena eressonii 5, miserabilis J* $, 
Trachandrena rugosa J* $. 

Diptera (3) — Syrph.: Sphaerophoria f, n; Empid.: Empis 
humilis ; Bombyli. : Bombylius major. 

Lepidoptera (2) — Lycaen.: Everes; Papilion.: Iphiclides. 

Coleoptera (1) — Nitidul.: Cercus f, fq, n. 

Lepidium virginicum. — Blooms April 12-November 7; 45 vis- 
itors observed. May 17-June 9 ; Mi, W. 

Long-tongued Bees (2) — Ceratin.: Ceratina <^ ?, fq, Zaodonto- 
merus J*, fq. 

Short-tongued Bees (15) — Halict. (5) : Agapostemon radiatus, 
Chloralictus coreopsis, sparsus sc, tegularis sc, versatus, Evylaeus 
arcuatus, pectoralis sc, ab, Odontalictus, Oxystoglossa similis sc, fq, 
Seladonia; Prosopid.: Prosopis pygmaea <^ $, sayi $, ziziae J* $, 
fq; Collet.: CoUetes eulophi J*; Andren.: Opandrena personata $, se. 

Other Hymenoptera (6) — Eumen.: Leionotus clypeatus, histrion- 
alis, illinoensis; Oxybel.: Notoglossa frontalis; Pompil.: Anoplius 
illinoensis, Psammochares tenebrosus. 

Diptera (21) — Stratiomy.: Nemotelus; Syrph.: Eristalis dimid- 
iatus, Helophilus similis, Mesogramma marginata ab, Paragus bi- 
eolor, tibialis, Syritta; Conop.: Zodion fulvifrons fq; Tachin.: 
Apinops, Cistogaster occidua, pallasii, Gymnosoma, Leucostoma 
atra, Ocyptera tenuis, Phorantha purpurascens ; Sarcophag.: Heli- 
cobia helicis; Muse: Lucilia caesar, Pseudopyrellia ; AntJiomy.: 
Limnophora, Phorbia acra ab, platura ab. 

Lepidoptera (1) — Papilion.: Pontia. 

May 20, June 1, 1909, 166 individuals belonging to 34 species 
were taken on the flowers : 

Long-tongued Bees (2: 11) — Ceratin.: Ceratina 5, Zaodonto- 
merus 6. 



CHARLES ROIiERTSOy 105 

Short-tongiiod BtH>.s (12:35) — Ualict.: Aj^apostcinon radiatus ), 
Chlorulictus coreopsis 1, tepularis 1, versatus 1, Evylacus arcuatus 1, 
pectoralis 6, Oxystoglossa similis G, S^-ladonia 4 ; Prosopid.: Prosojjis 
pygmaea 4, sayi 2, ziziae 5; Andnn.: Opaiulrena pcrsonata 3. 

Other Ilynienoptera (4: G) — Eumen.: Leionotus clypcatus 1, 
histrionalis 3; Pompil.: Anopliiis illiiiocnsis 1. Psaniinochares tene- 
brosus 1. 

Diptera (IG: 114) — Straliumy.: Xeniotflus 1; Syrph.: Kristalis 
Uimidiatus 1, Helophilus, similis 1, Mesograniraa niarginata 33, 
Paragus bicolor 1, tibialis 1; Conop.: Zodion fulvifrons G; Tachin.: 
Apinops 1, Cistogaster oecidua 1, pallasii 1, Ocyptera tenuis 1; 
Sarcophag.: Ilelicobia helicis 1; Muse: Pseudopyrellia 1; An- 
ihomy.: Limnophora 1, Phorbia acra 52, platura 12. 

Radicula obtusa, — Twenty-tliree visitors observed, May 1, 3, 8; 
Mi, Y. 

Long-tongued Bees (3) — A p.: Apis Iq; Megachil.: Alcidamea 
simplex $; Nomad.: Nomada illinoensis $. 

Short-tougued Bees (11, $) — Ualict.: Chloralictus albipeuuis, 
pilosus, versatus se, fq, zephyrus, Evylaeus arcuatus, Odontalictus, 
Oxystoglossa confusa, similis fq, Seladonia fq; Andren.: Andrena 
erythrogastra, Opandrena cressonii. 

Other liymenoptera (3) — Crabron.: Clytochrysus; Tiphi.: Ti- 
phia clypeata; Ichneumon.: Metopius terminalis. 

Diptera (6) — Syrph.: Sphaerophoria, Syrphus americanus; 
Tachin.: Peleteria; Sarcophag.: ISarcophaga sinuata; Muse: Lucilia 
sylvarum ; Ant homy.: Limnophora. 

Radicula palustris. — Blooms May 6-October 16; 6 species and 
22 individuals observed, May 31, June 3; Mi, Y. 

Short-tongued Bees (4: 18, ^)— Ualict.: Chloralictus tegularia 
sc, 2, versatus sc, 9, zephyrus 2, Evylaeus pectoralis 5. 

Diptera (2: 4) — Syrph.: Mesogramma marginata sf, 3; An- 
thomy.: Phorbia platura 1. 

Sisymbrium canescens. — Blooms A[)ril i:i-June 8; 13 visitors 
observed. May 2, 3; Mi, Y. 

Short-tongued Bees (11)— Ualict. ($) : Chloralictus pilosus sc, 
fq, i)ruinosus sc, sparsus, tegularis, versatus so, fq, Evylaeus pecto- 
ralis, Oxystoglofwa similis sc, fq, Seladonia sc ; Andren.: Andrena 
nasonii (^, Opandrena cressonii $, sc, personata cJ" 9. ^^ 

Diptera (2)— Tachin.: GjTnnosoma; Anthomy.: Phorbia acra. 



106 FLOWERS AND INSECTS— XXVI 

CUCURBITACEAE 

Cucurbita melopepo? (cult). — One \dsitor observed, July 11, 
September 21 ; Ma, Y. 

Long-tongued Bees (1) — Eucer.: Xenoglossa c?- 

Cucurbita pepo (cult). — Blooms July 3-October 4; 6 visitors 
observed, July 3-September 21 ; Ma, Y. 

Long-tongued Bees (6) — Ap.: Apis sc, fq; Bomh.: Bombus 
americanorum J* ^, sc, f q, impatiens ^ ; Eucer. : Melissodes bimacu- 
lata $, Peponapis J* $, sc, ab, oligolege, Xenoglossa J* ?, sc, ab. 

Echinocystis lobata. — Blooms July 26-September 27; 21 vis- 
itors observed on August 1 : Pol, W. 

Long-tongued Bees (2) — Ap.: Apis; Eucer.: Melissodes bimacu- 
lata ?. 

Short-tongued Bees (1) — Ealict.: Chloralietus versatus 5, sc. 

Other Hymenoptera (3) — Scoli.: Elis 5-cincta, Scolia bicineta 
Larr. : Tachytes elongatus. 

Diptera (15) — Syrph.: Allograpta ab, Mesogramma geminata. 
marginata, Milesia, Syritta f q, Syrphus americanus, ribesii ; 8arco 
phag.: Sareophaga assidua; Muse: Lucilia caesar, sericata, Musca, 
Phormia regina, Pseudopyrellia ; Anthomy.: Ophyra, Phorbia acra 

Sicyos angulatus. — Blooms August 18-September 25; 17 vis 
itors observed, August 21-31 ; Pol, Y. 

Long-tongued Bees (3) — Ap.: Apis fq; Bomh.: Bombus im- 
patiens ^; Eucer.: Melissodes bimaculata $, sc. 

Other Hymenoptera (9) — Sphec: Ammobia ichneumonea, 
Chalybion, Sceliphron; Bemhic: Sphecius; Vesp.: Polistes annu- 
laris, pallipes fq, rubiginosus, Vespula germanica, maculata. 

Diptera (5) — Syrph.: Mesogramma marginata, polita; Tachin.: 
Winthemia; Muse: Lucilia caesar, Musca. 

DiPSACEAE 

Dipsacus sylvestris (int). — Blooms July 1- August 29; 10 vis- 
itors observed on July 3, 28 ; Mas, R. 

Long-tongued Bees (2) — Bomh.: Bombus americanorum ^; 
Eucer.: Melissodes bimaculata J*. 

Short-tongued Bees (2, $) — Ealict.: Agapostemon'radiatus sc, 
viridulus. 

Diptera (1) — Bomhyli.: Exoprosopa fasciata fq. 

Lepidoptera (5) — Nymphal.: Anosia, Vanessa huntera; Papi- 
lion.: Jasoniades, Pontia; Hesperi.: Thanaos martialis. 



CHARLES BOBERTSON 107 

Ebenaceae 

Diospyros virginiana. — Blooms May 27-.Juiie 25; 29 species 
and 279 individuals observed, !May 3()--rJun(' 2.1; Ma. Y. 

On staminate flowers (17 : 127) : — 

Lonpr-tongued Bees (4:8) — Bomb.: Bombias separatus $, se, 2, 
Bombus impatiens $ ^, se, 4; Ceratin.: Ceratina ?, sc, 1, n; Nomad.: 
Ilolonomada affabilis $, 1. 

Short-tongued Bees (10: 109, n) — Halict.: Agapostemon radi- 
atus $, se, 1, Augoehlora fervida $, se, 3, viridula (^ $, sc, 5, Chlor- 
alietus sparsus 9» <"» 2, versatus $, c, 7, zeijhyiois $, se, 1, Curtisajjis 
eoriacea 9. ^c, 3, forbesii ^, c, 1, fuseii)ennis $, se, 85, Oxystoplossa 
siniilis $, e, 1. 

Diptera (3: 10, f, n) — Sijrph.: Allo<j:ra])tii 1. Syrphus ameri- 
canus 1, ribesii 8. 

On staminate and pistillate flowers (9: 146) : — 

Long-tongued Bees (6: 138) — Ap.: Apis sc, 78; Bomb.: Bombus 
americanorum $, 6; Megach.il.: Osmia pumila $, 2, Megachile 
raendica c^ $, 6; Eucer.: Tetralonia rosae (^ % sc, 31; Anthophor.: 
Anthemoessa J* $, sc, 15. 

Short-tongued Bees (2: 6, $, sc) — Relict.: Agapostemon viri- 
dulus 4. Oxystoglossa confusa 2. 

Lcpidoptera (1:2) — Ilcsperi.: Euphycs venia 2. 

On pistillate flowers (3: 6) : — 

Long-tongued Bees (1 : 2) — Bomb.: Bombias auricomus $, 2. 

Short-tongued Bees (1: 1) — Halict.: Oxystoglossa pura $, 1, n. 

Lepidoptera (1 : 3) — Hesperi.: Limochores nianataaqua 3, n. 

Euphorbia CEAE 

Euphorbia corollata (9: 74r-5).— Blooms May 24-September 
27; 52 visitors observed, July 6-August 22; Pol, W. 

Short-tongued Bees (7) — Halict. ($) : Chloralictus pilosus sc, 
sparsus. versatus sc, fq, Seladonia; Spheeodini : Spheeodes arvensis 
(^ $. fq, in cop ; Prosopid.: Prosopis pygmaoa 9. /-i/.ia<' c^ $• 

Other Ilymenoptera (22) — Sphcc: Priononyx at rata. Sceli- 
l)hron; Bemhic: Megastizus; Scoli.: Elis 5-cincta f q ; Philanth.: 
Eucerceris; Vesp.: Polistes pallipes, variatus; Eumen.: Ancistro- 
cerus campestris, Leionotus dorsalis; Crabron.: Anaerabro, Lin- 
denius errans, Protothyreopus bigeminus; Oxybel.: Oxybelus pack- 
ardii, 4-notatus; Pcmphredan.: Mimesa ; Larr.: Larropsis; Pompil.: 
Priocnemoides fulvicornis, Psammaehares relativus; Chrysid.: 
Iledychrum wiltii, Ilolopyga; Chalcid.: Leueospis; Ichneumon.: 
Ceratosoma. 



108 FLOWERS AND INSECTS— XXVI 

Diptera (21) — Syrph.: AUograpta ab, Mesogramma polita, 
Orthoneura nitida, Paragus bicolor fq, tibialis, Pipiza pulchella, 
Sphaerophona ab, Syritta ab; Bombyli.: Anthrax alternata, Exo- 
prosopa fasciata, f ascipennis ; Tachin.: Alophora aeneoventris, 
Cistogaster pallasii fq, Cyphocera, Paehyophthalmus signatus, 
Phorantha purpurascens, Senotainia trilineata fq, Trichopoda pen- 
nipes; Sarcophag.: Helieobia helicis; Muse: Morellia, Pseudopy- 
rellia. 

Lepidoptera (1) — Papilion.: Pontia. 

Hemiptera (1) — Core.: Chariesterus. 

Euphorbia preslii. — Blooms June 30-Oetober 26; 7 visitors 
observed, August 11, 24; Mi, W. 

Short-tongued Bees (1) — Halict.: Chloralictus tegularis $, sc. 

Other Hymenoptera (3) — Oxyhel: Notoglossa frontalis; Phil- 
anth. : Cerceris finitima ; Chrysid. : Hedychrum parvum. 

Diptera (3) — Syrph.: Mesogramma marginata, Syritta, Bomb- 
yli.: Sparnopolius. 

. FUMARIACEAE 

/Dicentra cucullaria (2: 125-6).— Blooms March 21-May 5; 23 
visitors observed, April 9-30 ; Ma, W. 

Long-tongued Bees (14) — Ap.: Apis e, ab, n; Boml. ($) : 
Bombias auricomus fq, separatus fq, Bombus americanorum fq, 
consimilis, impatiens, ridingsii; Megachil.: Centrosmia J* $, fq, 
Ceratosmia <^ $, Osmia collinsiae J*; Eucer.: Tetralonia belfragei (^ 
$, f q, dubitata J* ; Anthophor. : Anthophora c^, Emphoropsis ^. 

Short-tongued Bees {1)—Andren.: Andrena carlini J* $. 

Diptera (1) — Bombyli.: Bombylius major fq. 

Lepidoptera (6, n) — Nymphal.: Anosia, Vanessa atalanta; 
Papilion.: Iphiclides, Jasoniades, Pieris; Hesperi.: Thanaos mar- 
tialis. 

Gentianaceae 

Frasera carolinensis (6:48, 8: 142).— Blooms May 24- June 
22 ; 7 visitors observed, May 30-June 13 ; Ma, Y. 

Long-tongued Bees (4) — Ap.: Apis ab; Bomb.: Bombias sepa- 
ratus $ ^, ab ; Bombus americanorum $ ; Anthophor. : Anthemoessa 

Short-tongued Bees (1) — Halict.: Curtisapis coriacea $, sc, n. 
Other Hymenoptera (1) — Vesp.: Polistes pallipes. 
Lepidoptera (1) — Hesperi.: Thorbyes pylades n. 

Gentiana andrewsii (13:577-8). — Blooms September 9-Octo- 
ber 20 ; 2 visitors observed, September 23, 29 ; Ma, R. 



CHARLES ROBERTSON 109 

Long-tongued Bees (1) — Bomb.: Bombus amerioanonira <^ $ ^, 
ab. 

Coleoptera (1) — Milo.: Epicauta pennsylvanica gn, n. 

Gentiana puberula (8: 139^0). — One visitor observed, Septem- 
ber 29 ; Ma, R. 

Long-tongued Bees (1) — Bomb,: Bombus americanorum (^ $. 

Sabatia angularis. — Blooms July ll-8eptember 9; 3 visitors 
observed, August 2, 5 ; Ma, R. 

Long-tongued Bees (2) — Ccratin.: Ceratina $, sc; MegachU.: 
Megachile brevis $. 

Short-toncrued Bees (1) — Halict.: Oxystoglossa similis $, c, n. 

Geraniaceae 

Geranium carolinianum (6: 272), — Blooms May 21-July 13; 13 
visitors observed, ^lay 21, June 10; Mi, R. 

Long-tcngued Bees (3) — MegachU.: Alcidamea simplex cT $, f<l» 
Diceratosmia $; Eucer.: Tetralonia dilecta $. 

Short-tongued Bees (7) — Halict ($, sc) : Agapostcmon radi- 
atus, Chloralictus sparsus, tegularis, Evylaeus pectoralis, fq, Oxy- 
stoglossa eonfusa fq; Prosopid.: Prosopis ziziae $; Panurg.: Hetero- 
sarus 2, sc. 

Other Ilymenoptera (1) — Eumen.: Leionotus illinoensis. 

Diptera (2) — Syrph.: Mesogramma marginata fq; Tachin.: 
Phorantha purpurascens. 

Geranium maculatum (2: 299-300). — Blooms April 13-^une 4; 
44 visitors, April 2:V^Liy 24; Ma, R. 

Long-tongued Bees (24) — Ap.: Apis; Bomb. ($) : Bombias 
separatus, Bombus americanorum, consimilis, impatiens, ridingsii, 
Psithyrus variabilis ; Ccratin.: Ceratina J* $ ; Stelid.: Micro.stclis $, n ; 
MegachU.: Trypetini: Prochelostoma c? $, n; Osmiini: Alcidamea 
simplex (^, Ceratosmia $, Monilosmia J* $, Osmia atriventris (^, 
pumila $; Coelioxyini : Coelioxys sayi (^ $; Nomad.: Centriaa 
americanus (^, Holonomada superba ^f $, Nomada denticulata % 
Xanthidium luteolum $; Eucer.: Tetralonia belfragei cT, dilecta 
(^ $, fq, rosae cf ; Anthophor.: Anthophora $. 

Shoil-tongued Bees (11) — Ilalict. ($) : Agapostemon viridulus, 
Augochlora viridula, Chloralictus pilosus n, versatus n, Curti.sapis 
coriacea, Halictus lerouxii sc, Oxystoglos.sa similis n; Andrcn.: 
Andrena geranii (^ $, fq, type, illinoensis (^, n, Ptilandrena g. mac- 
ulati (^ $, sc, ab, oligolege, type, polemonii (^ $, fq, n. 



110 FLOWERS AND INSECTS— XXVI 

Diptera (5, n) — Syrph.: Helophilus latifrons f ; Empid.: Empis 
distans fq, humilis, otiosa, Pachymeria ab. 

Lepidoptera (4) — Lycaen.: Everes; Papilion.: Eurymus; Hes- 
peri : Thanaos martialis ; Sphing. : Hemaris thysbe. 

Gramineae ( anemophilous ) 
Panicum virgatum. — One visitor observed, July 30. 
Short-tongued Bees (1) — Halict.: Chloralictus versatus $, c, 5. 
Poa pratensis. — One visitor observed, June 9. 
Short-tongued Bees (1) — Halict.: Chloralictus sparsus $, c, 4. 
Zea mays. — One visitor observed, September 1. 
Long-tongued Bees (1) — Ap.: Apis e, 2. 

Hydrophyllaceae 

Ellisia nyctelaea (6: 49-50).— Blooms April 20-June 21; the 
first 100 individuals, representing 26 species, were taken on May 
8-23 ; Mi, W. 

Long-tongued Bees (8:30) — Bomb.: Bombus consimilis $, 1; 
Ceratin.: Ceratina J* 5? 9, Zaodontomerus J*, 8; Megachil.: Pro- 
chelostoma J* $, 5, Osmia atriventris J* $, sc, 2, pumila J*, 1; 
Nomad.: Gnathias cuneatus 5, 2; Eucer.: Tetralonia dilecta J*, 2. 

Short-tongued Bees (11: 55) — Halict. (?) : Chloralictus obscurus 
7, sparsus sc, 4, tegularis 2, versatus 2, zephyrus 1, Evylaeus pec- 
toralis 1, 4-maculatus 10, Oxystoglossa confusa 8, Seladonia sc, 7; 
Andren.: lomelissa $, 1, Opandrena personata (^ 5, sc, 12. 

Diptera (7:15) — Syrph.: Mesogramma geminata f, 1, margi- 
nata f, 4, Pipiza femoralis f, 1, Rhingia 2; Bomhyli.: Bombylius 
major 2, pulchellus 1 ; Tachin. : Siphona 4. 

Hydrophyllum appendiculatum (13:579-80). — Blooms May 
2- June 19 ; 46 visitors observed, May 3-June 19 ; Ma, R. 

Long-tongued Bees (20) — Ap.: Apis sc, ab; Bomh.: Bombias 
auricomus $, separatus $ ^, sc, ab, Bombus americanorum $, ab, 
consimilis $, impatiens $ ^, fq, ridingsii $ ^, sc, ab, Psithyrus vari- 
abilis $ ; Ceratin. : Ceratina $ ; Megachil. : Trypetini : Prochelostoma 
5, sc ; Osmiini : Alcidamea simplex J*, Ceratosmia $, ab, Diceratosmia 
5, sc, Hoplitis (^ 5, sc, Osmia pumila $, sc, ab ; Megachilini : Mega- 
chile brevis J*; Nomad.: Holonomada affabilis $; Eucer.: Tetralo- 
nia belfragei (^ 5, sc, ab, dilecta (^, fq, rosae J' $, fq. 

Short-tongued Bees (10) — Halict. ($) : Agapostemon radiatus 
sc, Augochlora viridula, Chloralictus pilosus, versatus, Curtisapis 
coriacea sc, ab, Evylaeus pectoralis, 4-maculatus, Oxystoglossa con- 
fusa sc, ab, Andren. : Andrena carlini $, geranii <^ $, sc, ab. 



CHARLES ROBERTSON 111 

Other Ilymenoptera (2) — Eunun.: Ancistrocerus t'l^ns, Lriono- 
tus foraniinatus. 

Diptera (10) — Syrph.: Criorhina intcrsistcns, Eristalis flavipes, 
Khin«?ia sf, ab, Sphej,'ina rufiventris f, n. Xylota chalybca; EmpUl.: 
Empis loript'dis, inula ab; Bombjili.: Aldrichia 1". ii; Conop.: 
Stylojjastt'r biannulata : Anthomy.: Ilyhinyia inornata. 

Lt'pitloptera (4) — Nympfuil.: Cliaridryas; Hesperi.: Aiiibly- 
scirtes, Atrytone zabulon, Pliolisora hayhurstii. 

May 18, 1909, the following 7 species and 22 individuals were 
taken on the flowers : 

Long-tongued Bees (7:22) — Bomb.: Bombias aurieomus 1, sep- 
aratus 8, Bombus amerieanorum 2, consimilis 1, impatiens 2; 
Eucer.: Tetralonia belfra<;ei 4, dilecta 4. 

Hydrophyllum virginianum (13:579). — Blooms May G-.June 
1; 19 visitors observed .May 8-27; Ma, W. 

Long-tongued Bees (12) — Bomb.: Bombias separatus $, ab, 
Bombus amerieanorum $ $, ab, consimilis $, fq, impatiens 9. fq> 
ridingsii $ $, ab, Psithyrus variabilis $; Meyachil.: C'eratosraia % 
sc; Nomad.: Gnathias ovatus $, f q ; xanthoparius J*; Eucer.: Tetra- 
lonia belfragei $, sc, dilecta ^, f q ; Anihophur.: Anthemoessa (^ $. 

Short-tonp^ued Bees (3) — Halict. ($) : Curtisapis coriacea sc, 
Oxystoglossa eonfusa e, n; Andren.: Andrcna geranii ^T ?, ^^', f^l- 

Other Hymenoptera (2) — Eumcn.: Ancistrocerus tigris, suck- 
ing at holes made by Leionotus, Leionotus foraminatus, perforating. 

Diptera (2) — Syrph.: Rhingia f, n; Bombyli.: Bombylius 
atriceps. 

May 18, 1909, the following 6 species and 46 individuals were 
taken on the flowers: 

Long-tongued Bees (6:4G) — Bomb.: Bombias .separatus 28, 
Bombus amerieanorum 5, consimilis 2, impatiens 2, ridingsii 2; 
Eucer.: Tetralonia dilecta 7. 

Hypericaceae. 

Hypericum ascyron. — Blooms July 3-August 7 ; 2 \isitors ob- 
served. July ") ; Ma. Y. 

Long-tongued Bees (2, 5, c) — Bomb.: Bombus amerieanorum 4, 
con.similis 4. 

Hypericum cistifolium (7: 109). — BloonLs May 29-Septcmbor 
7; ') s|)ecies and 17 individuals ob.served, Jiine 21— July 15; Ma, Y. 

Long-tongued Ii<^es (4: 15, c) — Bomb.: Bombias aurieomus ij, 1, 
separatus 9 $. 8, Bombus amerieanorum 9 5. 5; Megachil.: Chelo- 
stomoides 9. 1- 



112 FLOWERS AND INSECTS— XXVI 

Short-tongued Bees (1: 2) — Ealict.: Agapostemon viridulus $, 
c,2. 

Hypericum punctatum. — Blooms June 26-September 7; 3 vis- 
itors observed, June 29, July 15, 30; Mi, Y. 

Long-tongued Bees (1) — Bomh.: Bombus americanorum ^, c. 

Short-tongued Bees (2, $, e) — Ealict.: Chloralictus pilosus, 
versatus. 

Iridaceae 

Iris hexagona. — Blooms June 8-20; 2 visitors observed, June 
10 ; Ma, R. 

Long-tongued Bees (2) — Bomb.: Bombus americanorum $, 1; 
Anthophor.: Anthemoessa J*, 1. 

Iris versicolor (9:80). — Blooms May 17-June 14; 10 visitors 
observed, May 20-June 5 ; Ma, R. 

Long-tongued Bees (5) — Bomb. (5) : Bombias auricomus, sep- 
aratus, Bombus americanorum f q ; Eucer. : Tetralonia dilecta J* $, 
sc, ab, rosae c?. 

Short-tongued Bees (1) — Halict.: Chloralictus versatus ?, c, n. 

Lepidoptera (3, n) — Lycaen.: Chrysophanus ; Hesperi.: Limo- 
chores taumas, Polites. 

Coleoptera (1) — Scarabae.: Trichius piger n. 

Sisyrinchium angustifolium. — Blooms April 18-June 6 ; 15 vis- 
itors observed. May 10-23 ; Mi, W. 

Long-tongued Bees (4) — Bomh.: Bombias auricomus $, sep- 
aratus $ ; Megachil. : Osmia pumila $ ; Nomad. : Holonomada 
superba (^. 

Short-tongued Bees (7, $) — Halict.: Chloralictus pilosus sc, 
pruinosus, versatus sc, ab, Oxystoglossa confusa sc, ab, similis, Sela- 
donia sc, fq; Andren.: Opandrena cressonii sc. 

Diptera (4) — Syrph.: Helophilus latifrons, Mesogramma mar- 
ginata, Sphaerophoria ; Bombyli. : Bombylius atriceps. 

Sisyrinchium gramineum. — Blooms May 11-July 1; 1 visitor 
observed, May 28 ; Mi, R. 

Short-tongued Bees (1) — Halict.: Oxystoglossa similis $, sc. 

Labiatae 

Agastache nepetoides (14:115-6). — Blooms July 24-Septem- 
ber 28 ; 15 visitors observed, August 2-September 2 ; Mas, Y. 

Long-tongued Bees (6) — Ap.: Apis ab; Bomb.: Bombias sep- 
aratus (^ <^, sc, fq, Bombus americanorum J* ^, sc, ab, consimilis J*, 
f q, impatiens §, sc, ab ; Eucer. : Melissodes bimaculata cf $. 



CHARLES liOBEIiTSON 113 

Short-tongiied Bees (3, n) — llalict. ($) : CliloralictutJ sparsus 
c, ab, versatus e, Oxysto{?lossa pura. 

Other Hymenoptera (1) — Sphec: Spliox nij^rioans. 

Diptera (3) — Syrph. (f, n) : Mesosramma pcminata, Syritta; 
Bomhyli.: Exoprosopa fasciata. 

Lepidoptera (2) — Nyviphal.: Aiiosia; I'apUuin.: Pirris. 

Agastache scrophulariaefolia (14:1 Hi). — Blooms Aujni-st 7- 
Septonibor 28; 5 visitors observed, August 31, September 1 ; Mas, R. 

Lonjj-tongued Bees (4) �� Ap.: Ai)is f q ; liornh.: Bombias auri- 
comiis $, e, Bombus amerieanorum J* ^, se, fq ; Mrfjdchil.: Mej^a- 
chile mendica $. 

Diptera (1) — Botnhyli.: Exoprosopa fasciata f(i. 

Blephilia ciliata (14: 113-4).— Blooms May ir)-July 4; 76 vis- 
itors observed, .luiie 1-July 5; ^las, R. 

Lonpr-tongued Bees (25) — Ap.: Aj)is ab; Bomb. ($) : Bombias 
auricomus sc, separatus, Bombus amerieanorum sc, fq, consimiiis, 
impatiens, Psithyrus variabilis; Ceratin.: Ceratina 9, sc, ab; 
Megachil. : Trypetini: Neotrypetes barbatus $, se, fq, truncatus $, 
sc, ab; Osmiini : Alcidamea simplex $, sc, Diceratosmia $, Iloplitis 
J*. Osmia distincta $; Megachilini : Cyphopyga (^, fq, Mepaehile 
brevis <^ $, sc, mendica (^ $, sc, fq, petulans $, sc, Sayapis pugnata 
(^ $, Xanthosarus (^ $; Coelioxyini : Coelioxys sayi (^; Eucer.: 
Tetralonia dilecta (^ $, sc, rosae cT; Anthophor.: Anthemoessa (^, 
Clisodon $, sc. 

Short -t on gued Bees (17) — llalict. ($) : Agapostemon \'iridulus 
sc, ab, Augochlora fervida c, Chloralictus pilosus sc, sparsus sc, 
versatus sc, ab, zephyrus, Curtisapis coriacea c, Evelaeus pectoralis, 
Ilalictus parallelus sc, Odontalictus, Oxystoglossa similis sc, fq, 
Seladonia sc; Prosopid. ($, f, n) : Prosopis pygmaea, ziziae; 
Andren.: Andrena geranii $, sc, Trachandrena crataegi $; Panurg.: 
Calliopsis andrenifomis (^ $. 

Other Hymenoptera (4) — Sphcc: Priononyx atrata, Spliex 
nigricans, pietipennis, procera ab. 

Di[)tera (13) — Syrph.: Eristalis diniidiatus. flavipes. transversus 
fq. Ilelophilus latifrons, Volueella evecta f; Empid.: Parempis; 
Bomhyli.: Anthrax parvicorni.s, Bombylius atriceps ab, Argyr- 
amoeba oedipus f, n, ToxopliDra ; Connp.: Phy.sooei)hala tibialis; 
Tnchin.: Archytas aterrima, Epigrimyia polita. 

Lepidoptera (15) — Nymphal.: Anosia, Argynnis, Charidryas; 
Papilion.: Eurymus, Iphiclides, Ja.soniades, Pieris, Pontia; 
Ilfsperi.: Achalarus, Epargyreus, Euphyes verna, Limochores 
manataaqtia, tauma.s, Pholisora hayhurstii. Thorybes pylades. 



114 FLOWERS AND INSECTS— XXVI 

Coleoptera (2, sf, n) — Scarabae.: Trichius affinis, piger fq. 

Blephilia hirsuta (14:114-5). — Blooms June 21-September 3; 
83 visitors observed, June 26-July 29 ; Mas, W. 

Long-tongued Bees (36) — Ap.: Apis ab; Bomb.: Bombias 
auricomus $, separatus J* ^, fq, Bombus amerieanorum <^ $ ^, fq, 
impatiens J*, ridingsii <^, fq, Psithyrus laboriosus $, variabilis $; 
Ceratin.: Ceratina $, sc, ab, Zaodontomerus cJ*; Megachil.: Try- 
petini : Neotrypetes truncatus $, sc ; Osmiini : Alcidamea simplex ? ; 
Megachilini : Chelostomoides (^ 5, f q, Megachile brevis J* $, generosa 
J*, mendica J* $, fq, petulans J* $, Sayapis sayi J', fq, Xanthosarus 
(^ ; Coelioxyini : Coelioxys 8-dentata cf, rufitarsis J*, sayi J* $, f q ; 
Epeol.: Triepeolus eoncavus ^f, concolor J^ 5, fq, cressonii c^, remi- 
gatus $ ; Eucer. : Epimelissodes obliqua J* $, Florilegus $, Melissodes 
agilis J*, bimaculata J* $, fq, comptoides J* $, fq, trinodis cf $, 
variabilis J* $, Peponapis c^; Anthophor.: Amegilla $, Clisodon 
d'-?,sc. 

Short-tongued Bees (13) — Halict.: Agapostemon radiatus (^ ?, 
sc, f q, splendens <^, viridulus $, Augochlora viridula c^, Chloralictus 
pilosus $, sparsus e, ab, n, Evylaeus arcuatus J*, pectoralis ?, sc, 
4-maculatus $, c, n, Halictus lerouxii J* 5, Oxystoglossa confusa 
c? ?, sc, ab, pura $ ; Prosopid. : Prosopis ziziae $, f , n. 

Other Hymenoptera (6) — Sphec: Spbex nigricans, procera, vul- 
garis; Scoli.: Elis 5-cincta; Eumen.: Leionotus foraminatus fq; 
Pompil.: Ceropales fulvipes. 

Diptera (16) — Syrph.: Allograpta f, n, Eristalis transversus, 
Syritta f, fq, n, Tropidia albistylum, Xylota fraudulosa f, n; 
Empid.: Parempis; Bombyli.: Anthrax parvicornis, sinuosa f, n, 
Argyramoeba albofasciata f, n; Conop.: Oneomyia, Physocephala 
texana f q, tibialis, Stylogaster neglecta ab, Zodion obliquef asciatum ; 
Tachin.: Archytas analis; Muse: Stomoxys. 

Lepidoptera (12) — Nymphal.: Anosia, Argynnis, Charidryas, 
Vanessa atalanta, cardui; Papilion.: Eurymus fq, Pieris, Pontia; 
Hesperi.: Epargyreus, Euphyes metacomet, Polites; Ctenuch.: 
Scepsis. 

Hedeoma pulegioides (14:108). — Blooms July 21-September 
28 ; 8 visitors observed, August 8, 11 ; Mi, R. 

Long-tongued Bees (1) Ceratin.: Ceratina $. 

Short-tongued Bees (6) — Halict.: Chloralictus versatus $, sc, 
tegularis J, sc, Odontalictus (^, Oxystoglossa confusa 5, similis (^ $, 
sc, fq; Panurg.: Calliopsis andreniformis (^ 5, ab. 

Diptera {1)— Syrph.: Mesogramma marginata f, n. 



CHARLES ROBERTSON 115 

Isanthus brachiatus. — Bloonis Auj^st 19-Oetober 20; 3 vis- 
itors observed, August 29 ; Mi, R. 

Short-tongued Bees (3) — Halict. ($, c) : f'hlnral ictus pilosus, 
spai"sus, vci-satus. 

Leonurus cardiaca (iut, 14:123). — Blooms June 4-Oetober 18; 
11 visitors observed, June lo-July 1; Ma, li. 

Long-tongued Bees (5) — Ap.: Apis ab; Bomb. ($) : Bombias 
auricomus, Bombus americanorum ; C( rutin.: Cerutina $, sc, fq; 
Anihophor.: Anthemoessa <^. 

Short-tongued Bees (3) — Halict. (^, c, n) : Chloralictus 
spai-sus, vei-satus ab, Seladonia. 

Diptera (3) — Syrph. (f, n) : Allograpta, Mesogramma gem- 
inata, Syrphus ribesii. 

Lycopus americanus (14:103-4). — Blooms July 15-September 
16; 140 visitors observed, August 13-September 7; Pol, W. 

Long-tonp^ued Bees (13) — Ap.: Apis ab; Bomb.: Bombus 
americanorum ^. impatiens ^, fq, Psithyrus variabilis (^ ; Ceratin.: 
Ceratina $, se, fq; Megachil.: Megaehilini : Megachile brevis $, 
mendica <^, petulans <^; Coelioxyini: Coelioxj's germana $; EpeoL: 
Triepeolus concolor $; Eucer.: Melissodes comptoides cT ?. nivea $, 
simillima c?. 

Short-tongued Bees (17) — Halict.: Agapostemon radiatus (^ $, 
Augochlora fervida (^ $, fq, Chloralictus sparsus $, sc, versatus $, 
sc, ab, Curtisapis coriaeca$, Ilalictus lerouxiij", jjarallelus (^, Odon- 
talictus $, Oxystoglossa similis $, Seladonia J' $; Prosopid.: Pro- 
sopis illinoensis $, pygmaea (^, ziziae J* $; Collet.: CoUetes ameri- 
canus (^, latitarsis (^; Pamirg.: Calliopsis andreniformis $, sc, 
Perdita J* $, in cop. 

Other Ilymenoptera (36) — Sphec: Ammobia ichneumonea fq, 
pennsylvanica, Isodontia apicalis, Priononyx atrata, thomae, Sceli- 
phron, Sphex gracilis, nigricans ab, pictipennis, procera; Bcmbic: 
Bicyrtes ventralis. Megastizus fq, Stizus; Scoli.: Elis interrupta fq, 
5-cincta fq, Scolia bicincta ; Philanth.: Eucerceris fq. Pliilanthus 
punctatus, ventilabris; Vesp.: Polistes annularis, pallipes. variatus, 
Vespula maculata; Eumcn.: Eumenes fraternus, Ix-ionotus for- 
aminatus, vagus; Larr.: Tachytes aurulentus, elonpitus. mandi- 
bularis; Pompil.: Ceropales bipunctata, Lophopompilus philadrl- 
phicus, Poecilopompilus interruptus, navus, Pomjiiloides margin- 
atus, Priocnemoides fulvicornis f q ; Chrysid.: Iledychrum wiltii. 

Diptera (35) — Syrph.: Mesogramma marginata, Orthoneura 
nitida, Paragus bicolor, tibialis, Sphaerophoria, Syritta; Empid.: 



116 FLOWERS AND INSECTS—XXVI 

Parempis; Bombyli.: Exoprosopa fasciata, fascipennis; Conop.: 
Conops xanthopareus, Physocephala texana; Tachin.: Archytas 
analis ab, aterrima ab, hystrix, Cistogaster pallasii, Cyphocera, 
Distichona auriceps, Gymnosoma, Linnaemyia, Ocyptera lata, 
tenuis, Peleteria fq, Senotainia rubriventris, Siphoplagia anomala 
fq, Spallanzania ab, Trichopoda pennipes, Trichophora; Dexi.: 
Scotiptera; Sarcophag.: Helicobia helicis, Scarcophaga siniiata; 
Muse: Compsomyia, Lucilia sericata, sylvarum, Pseudopyrellia ; 
Anthomy.: Limnophora. 

Lepidoptera (8) — Nymphal.: Basilarchia arcMppus, Phyciodes; 
Lycaen.: Everes; Papilion.: Eurymus; Hesperi.: Ancyloxypha, 
Limochores taumas, Pholisora catuUus; Ctenuch.: Scepsis. 

Coleoptera (1) — Lampyr.: Chauliognathus pennsylvanicus ab. 

On August 22, 24, 27, 29, 1910, the following 51 species and 383 
individuals were taken on the flowers : 

Long-tongued Bees (3:13) — Ap.: Apis 10; Megachil.: Mega- 
chile brevis 2; Eucer.: Melissodes comptoides 1. 

Short-tongued Bees (3:11) — Halict: Augochlora fervida 1, 
Chloralictus sparsus 1, versatus 9. 

Other Hymenoptera (17:51) — Sphec: Ammobia ichneumonea 
2, Priononyx atrata 3, thomae 2, Sceliphron 1, Sphex nigricans 9; 
Bembic: Bicyrtes ventralis 1, Megastizus 6, Stizus 1; Scoli.: Elis 
5-cincta 6; Philanth.: Eucerceris 2; Vesp.: Polistes pallipes 3; 
Larr. : Tachytes aurulentus 1, elongatus 2, mandibularis 1 ; Pompil. : 
Lophopompilus philadelphicus 1, Poecilopompilus interruptus 2, 
Priocnemoides fulvicornis 8. 

Diptera (24:141) — Syrph.: Mesogramma marginata 1, Syritta 
2; Bovribyli.: Exoprosopa fasciata 2; Conop.: Conops xanthopareus 
1; Tachin.: Archytas analis 24, aterrima 5, hystrix 1, Cistogaster 
pallasii 1, Cyphocera 2, Gymnosoma 3, Linnaemyia 1, Ocyptera 
tenuis 2, Peleteria 5, Senotainia rubriventris 5, Siphoplagia anomala 
8, Spallanzania 64, Trichophora 4 ; Sarcophag. : Helicobia helicis 2, 
Sarcophaga sinuata 4; Muse: Compsomyia 1, Lucilia sericata 1, 
sylvarum 3, Pseudopyrellia 2; Anthomy.: Limnophora 1. 

Lepidoptera (3:5) — Nymphal.: Basilarchia archippus 1, Phy- 
ciodes 3; Hesperi.: Limochores taumas 1. 

Coleoptera (1: 162) — Lampyr.: Chauliognathus pennsylvanicus 
162. 

Marrubium vulgare (int, 14: 122-3). — Blooms May 21-October 
5 ; 7 visitors observed, June 22, 25, 29, September 9 ; Ma, W. 

Long-tongued Bees (5) — Ap.: Apis ab; Bomb. (^) : Bombias 
separatus, Bombus americanorum ; Ceratin. : Ceratina $ ; Megachil. : 
Megachile brevis $. 



CHARLES ROBERTSON 117 

Diptera (1) — Bomhyli.: Bombylius utriceps. 
Lepidopttra (1) — Papiliun.: Pontia I'q. 

Mentha arvensis (14: 102-3).— Blooms July IT-Octola-r 7; 25 
visitors observed, August 13-Septoniber 10; Pol, W. 

Short-tongued Bees (1) — Ilalict.: Oxyston;l()ssa confusa cT. 

Other llymenoptera (9) — Sphcc.: Aiiimobia nutja, Isodontia 
apicalis, Sphex gracilis, vulgaris; Bembic: Benibix nubillipennis; 
Scoli.: Ells interrupta, 5-cincta U]; Philunth.: Eucerceris; I'ominl.: 
Pompiloidcs marginatus. 

Diptera (12) — Syrph.: Milesia, Syritta, Tropidia quadrata; 
Empid.: Parempis; Bomhyli.: Exoprosopa fascipennis; Conop.: 
Conops xanthopareus; Tachin.: Archytas analis, aterrima ab; 
Dexi.: Ptilodexia, Scotiptora ; Muse: Lucilia sylvarum, Pscudo- 
pyrellia. 

Lepidoptera (2) — Papiliun.: Pioris; Ilispcri.: Ancyloxypha. 

Coleoptera (1) — Lampyr.: Chauliogiiatlius pennsylvanicus ab. 

Monarda bradburiana (,14:108-11). — Blooms May 7-Juiic IG; 
37 visitors observed, ^May 10-June IG; Ma, K. 

Birds (1)— rroc/iiY.: Trochilus. 

Long-tongued Bees (14) — Ap.: Apis ab ; Bomb.: Bombias auri- 
comus $, fq, separatus $, fq, Bombus americanorum $, ab, impatiens 
$ $, ridingsii §, sc; Ceratin.: Ceratina $, se, ab, n; Megachil.: 
Megachilini : Megachile mendica $ ; Coelioxyini : Coelioxys sayi $, 
type; Eucer.: Tetralonia dilecta cf $, fq, rosae (^; Anthophor.: 
Anthemoessa <^ $, fq, Anthophora $, Clisodon (^. 

Short-tongued Bees (9, n) — Ilalict. ($) : Chloralietus versatus 
c, Curtisapis coriacea c, forbe.sii c, Evylaeus pectoralis c, 4-macu- 
latus e, Oxystoglossa confusa c, ab, similis, at holes made by Loiono- 
tus; Prosopid.: Prosopis sayi ^, f; Panury.: lleterosarus i)arvus 
$, c, fq, type. 

Other Hymenoptera (1) — Eumen.: Leionotus foraminatus, per- 
forating. 

Diptera (1) — Bomhyli.: Bombylius atriceps ab. 

Lepidoptera (11) — Nymphal.: Argj-nnis, Vanessa huntcra ; 
Papilion.: Euphoeades, Hcraclide.s, Jasoniades, Laertias; Ilesperi.: 
^trytone zabulon, P^pargjreus, Eupliyis metacomet, Thorybcs 
bathyllus, pylade.s. 

Monarda fistulosa (14:11-3). — Blooms July 7-September 24; 
Gl visitors observed, July 16-Septombcr 10; Mas. R. 
Bird.s il)—Trocha.: Trochilu.s. 



118 FLOWERS AND INSECTS— XXVI \ 

i 

Long-tongued Bees (21) — Ap.: Apis, at holes made by Leiono- | 
tus, ab, n; Bomb.: Bombias auricomus J* $ ^, ab, separatus ^ 
5, ab, Bombus americanorum c{ ? ^, ab, consimilis ^, f q ; Ceratin. : 
Ceratina 5, c and at holes made by Leionotus, fq, n; Megachil.: 
Megachilini : Cyphopyga J*, Xanthosarus 5 ; Coelioxyini : Coelioxys 
rufitarsis $; Epeol.: Triepeolus concavus 5, concolor, 5, nevadensis 
J^, remigatus $; Eucer.: Anthedon J* $, ab, Epimelissodes obliqua 
J* 5, Melissodes agilis <^, bimaculata J* $, sc, fq, cnici J*, comptoides 
J* 5, trinodis $, variabilis $, so, type. 

Short-tongued Bees (<I, $, at holes made by Leionotus) — 
Ealict.: Agapostemon radiatus, Chloralictus pilosus, versatus, also 
c, Halictus lerouxii, Odontalictus, Oxystoglossa confusa, Seladonia. 

Other Hymenoptera (3, n) — Sphec: Sphex pictipennis, at holes; 
Eumen.: Leionotus dorsalis, perforating, foraminatus, perforating. 

Diptera (6) — Bombyli.: Exoprosopa decora, fasciata ab, Argyr- 
amoeba albofasciata f, n, Systoechus fq; Conop.: Physocephala 
tibialis, Stylogaster biannulata n. 

Lepidoptera (23) — Nymphal.: Anosia, Argynnis, Basilarchia ; 
archippus, Speyeria, Vanessa atalanta, cardui, huntera ; Papilion. : ! 
Euphoeades, Eurymus, Heraclides, Laertias ab, Papilio ab, Pontia ; j 
Hesperi. : Aehalarus, Atrytone delaware, zabulon, Epargyreus, i 
Euphyes metacomet, Pholisora catullus, hayhurstii, Thorybes i 
bathyllus; Sphing.: Hemaris axillaris, thysbe. ; 

Nepeta cataria (int, 14:116-7). — Blooms June 19-November ' 
19 ; 73 visitors observed, June 26-September 10 ; Mas, R, \ 

Long-tongued Bees (28) — Ap.: Apis ab; Bomb.: Bombias^ 
auricomus $, separatus ^ ^, fq, Bombus americanorum J* ? ^, fq, ■ 
consimilis ^, sc, fq, impatiens (^ $, fq, ridingsii <^; Ceratin.: Cera- ' 
tina 5 ; Megachil. : Trypetini : Neotrypetes truncatus $ ; Osmiini : j 
Alcidamea simplex $ ; Megachilini : Anthemois J* 5, Chelostomoides i 
J* 5, ab, Megachile brevis (^ $, f q, generosa ^^ % mendica $, petulans ; 
$, Oligotropus ^, Sayapis pugnata J' ; Coelioxyini : Coelioxys 8- 1 
dentata J*, sayi J* $; Nomad.: Centrias americanus 5; Epeol. {^) : ' 
Epeolus bifasciatus, Triepeolus concavus, concolor fq, remigatus;- 
Eucer. : Epimelissodes obliqua (^, Melissodes bimaculata J* $, f q, : 
variabilis J^. \ 

Short-tongued Bees (10) — Ealict.: Agapostemon radiatus cf ?, ! 
fq, viridulus $, Chloralictus pilosus J* $, sparsus $, c, versatus 5, - 
sc, fq, Halictus lerouxii ^ $, fq, parallelus $, Odontalictus $, Sela- i 
donia J* $ ; Panurg. : Calliopsis andrenif ormis $. ; 

Other Hymenoptera (11) — 8phec.: Priononyx atrata, Sphex j 
gracilis, nigricans, pictipennis, procera, vulgaris ; Scoli. : Elis 5- i 
cincta ; Eumen. : Leionotus anormis, dorsalis, foraminatus, fulvipes. I 



CHARLES ROBERTSON 119 

Diptera (12) — Syrph.: Eristalis tenax, Ilelophilus latifrons, 
Rhingria, Sphaerophoria, Syritta ; Bumbyli.: Anthrax fulvohirta, 
parvieornis; Tachin.: Archytas analis, aterrima, Cyphocera, Linn- 
aemyia, Ocyptera lata. 

Lepidoptera (11) — Nymphal.: Ar^ynnis, Pliyciodes, Vanessa 
atalanta, huntera; Papilion.: Eurymus, Pieris, Pontia ab; Hespcri.: 
Epar<:yrt'us, Pholisora catullus, Thanaos juvenalis, niartialis. 

Ilrmiptt'ra (1) — Lyyac: Lyfijai'us. 

Nepeta hederacea (iiit, 14: 117-8).— Blooms Marcli 24-June 
21 ; 22 visitors observed. March 25-May 20 ; ^la, 11. 

Lonp:-ton«riied Bees (12) — Ap.: Apis ab; Bomb. ($) : Hoiiihus 
araericanorum ab, consimilis, pennsylvanicus, ridinpjsii ; Cmitin.: 
Ceratina J* $, ab; Majachil.: Alcidamea simplex <^, Osmia eoilin.siae 
<^, pumila cf $, f(i ; Nomad.: llolonomada superba ^, f q ; Eucer.: 
Tetralonia dilecta (^ $, ab; Antlwphor.: Anthemoe.ssa <^ $, ab. 

Short-tongued Bees (2, $) — Halict.: Augochlora viridula, Oxy- 
stoglossa confusa. 

Diptera (2) — Syrph.: Rhingia ; Bomhyli.: Bombylius atriceps 
ab. 

Lepidoptera (6. n) — Papilion.: Eurymus ab, Pieris ; Hespcri.: 
Atrytone zabulon fq, Pamphila hobomok, Polites; Noctii.: Plusia 
simplex. 

Physostegia virginiana (14: 121-2).— Blooms July 19-October 
10; 7 visitors observed, August 23-September 22; Ma, R. 

Birds (l)—Trochil.: Trochilus 2. 

Long-tongued Bees (4) — Bomb.: Bombus americanorum (^ $ ?, 
20, consimilis $, sc, 1; Megachil.: ]\legachile brevis c^, 1; Eucer.: 
MeIis.sodes bimaculata J*, 1. 

Lepidoptera (2, n) — Xynipluil.: Ano.sia 1 ; Papilion.: Eurymus 1. 

Prunella vulgaris (14: 120-1).— Blooms July G-Xovember 19; 
23 visitors ob.served, July 11-October 3; Ma. R. 

Long-tongued Bees (9) — Bomb.: Bombias separatus (^, Boml)U3 
americanorum $, ab, con.similis $, impatiens (^ $, so, fq; Ctratin.: 
Ceratina $; Megachil.: Megachile mendica <^; Eucer.: Meli-ssodes 
bimaculata (^ $, eomptoides $; Anthophor.: Clisodon (^ $. 

Short-tongued Bees (3, ^)—IIalict.: Oxystoglos.sa confusa, Sela- 
donia n; Panurrj.: Calliopsis andrcniformis. 

Other Ilymenoptera (1) — Scoli.: Scolia bicineta. 

Diptera (2) — Bombyli.:Exoprosop& fasciata; Tachin.: Archytas 
aterrima. 



120 FLOWERS AND INSECTS— XXVI 

Lepidoptera (8, n) — Papilion.: Eurymus, Pieris, Pontia; Hes- 
peri.: Ancyloxypha, Atrytone delaware, Limochores taumas, Pholi- 
sora hayhurstii, Polites. 

Pycnanthemum flexuosum (14: 107). — Blooms June 19-Sep- 
tember 12 ; 268 visitors observed, June 19 — August 3 ; Mis, W. 

Long-tongued Bees (44) — Ap.: Apis ab; Bomb.: Bombias auri- 
comus c? $ $, sc, fq, in cop, type, scutellaris ^, separatus J* $ ^, 
se, fq, Bombus americanorum c^ ? ^, impatiens $, ^, Psithyrus 
laboriosus $, variabilis $; Ceratin.: Ceratina $; Stelid.: Stelidium 
5, type; Megachil.: Osmiini: Alcidamea simplex $; Megachilini: 
Megachile brevis (^ $, fq, generosa J* $, mendica (^ $, ab, petulans 
^ $, sc, fq, Oligotropus J*, Sayapis sayi J* $, f q, Xanthosarus J* $ ; 
Coelioxyini : Coelioxys alternata J^, germana <^ $, modesta (^, 8-den- 
tata J* $, ab, sayi c? $, f q ; Nomad. : Cephen 5 ; Pasit. : Holcopasites 
illinoensis J* 5 ; Epeol. : Epeolus bif asciatus (^, fq, lectoides 5, type, 
Triepeolus concavus J* $, fq, concolor ^ $, ab, cressonii (^, lunatus 
J* 5, fq, nevadensis J^ $, remigatus J* 2> ^Q^ simplex (^; Melect.: 
Melecta J*; Eucer.: Anthedon J* $, Epimelissodes illinoensis $, 
obliqua J" $, fq, Florilegus $, Melissodes agilis J* 5, bimaculata (^ % 
ab, comptoides J', cereopsis $, variabilis J*. 

Short-tongued Bees (38) — Halict.: Agapostemon radiatus J* $, 
ab, texanus $, Augochlora fervida J* 5, sc, viridula J* $, Chloral- 
ictus pilosus J*, pruinosus J*, sparsus 5, tegularis $, sc, versatus J* $, 
sc, fq, Curtisapis forbesii J* $, fq, Evylaeus arcuatus J*, pectoralis 
J* 2, sc, Halictus lerouxii J* 5? ^^^ parallelus J* $, fq, Odontalictus 
(^ 5, ab, Oxystoglossa confusa J* 5, sirailis J* 5, fq, Seladonia J* $; 
Sphecodini: Dialonia $, Machaeris stygia J* $, ab, Proteraner <^, 
Sphecodes arvensis J* 5, ab, heraclei J*, minor 5, Sphecodium cres- 
sonii $, pycnanthemi $, ^^pe; Prosopid.: Prosopis pygmaea 5, f<l> 
sayi (^, ziziae J* $, fq; Collet.: Colletes eulophi J* 5> f<l> latitarsis 
c^ $, nudus (^ ?, #2/pe, similis $, i?/pe, willistonii (^2, ab; Nomi.: 
Paranomia cf $, ab ; Andrew. ; Trachandrena obscura 5, type, quin- 
tilis $, fq, #?/pe; Panurg.: Calliopis andreniformis $. 

Other Hymenoptera (89) — Sphec: Ammobia ichneumonea fq, 
nuda, pennsylvanica, Isodontia apicalis, Palmodes, Priononyx at- 
rata fq, thomae, Sceliphron, Sphex gracilis in cop, nigricans fq, 
pictipennis, procera; Bemhic: Bembix nubillipennis fq, spinolae, 
Bicyrtes 4-fasciata fq, ventralis, Megastizus, Stictia, Stietiella fq, 
Stizus; Scoli.: Campsomeris, Elis interrupta, obscura ab, 5-cineta 
ab, thoracica, Scolia bicincta, nobilitata ; Philanth. : Cerceris bicor- 
nuta, clypeata, compacta, compar, finitima, fumipennis, robertsonii, 
rufinoda, Eucerceris, Philanthus punctatus fq, ventilabris fq; 



CHARLES liOBEIiTSON 121 

Vesp.: Polistes annularis, rubipinosus, variatus; Eitmen.: AuvinXvo- 
cerus campcstrLs, capra, unilasc-iatiis, Eumones fratemus in coj), 
Leionutus anonnis fq, arvensis, clypi-atus typf, dorsalis, forami- 
natus ab, t'ulvipes, funilatus, histrionalis, inolestus, sprophulariae, 
vaffus, ziziae, Monobia, Ptcrocliilus, Zendalia zendaloides, Zethus; 
Crabron.: Ilypocrabro, Prototliyreopiis rufilVmur, I'scutlocrabro 
fq. Solenius ab; Oxybcl.: Notop^lossa americana, eniarjfiiiata, fron- 
talis, Oxybclus lactus, packardii ; Larr.: Astatus unicolor, Noto- 
gonidoa, Tachysphex acutiis, belfraRi'i, mundus, Tachytcs aurulcn- 
tus. elongatus ab, barpax, pepticus; Nysson.: Psoudoplisus 
phaleratus; Pompil.: Aracbnoproctonus, Batizonus, Ccropales 
robinsonii, Lophopompilus pbiladclphicus, Poecilopompilus navus, 
Pompiloidcs amciicanus, marpjinatus, Prioenemoides fulvicomis fq ; 
Chrt/sid.: Hcdycbruni violaceum. 

Diptera (54) — Stratiomy.: Odontomyia oincta, Stratiomyia 
racigenii ; Syrph.: Eristalis aoneus, dimidiatus, latifrons fq. tonax 
fq, transversus, vinctorum fq. Ilclophilus latifrons, Mallota cimbioi- 
forniis. illinoensis type, Mosogranima marf^iiiata ab, Milosia, Ortho- 
neura nitida fq, Sphacrophoria, Spilomyia lonfjioornis, Syritta ab, 
Tropidia mamiilata; Empid.: Parcmpis ab; Mida.: Midas clavatus 
ab, tibialis; Bomhyli.: Anthrax altcrnata, fulvohirta fq, parvicomis, 
Arpyramocba albofasciata f, n, Exoprosopa emarpinata fq, fasciata, 
fascipennis ab; Conop.: Conops brachyrrbynchus, xanthoparcus ab, 
in cop, Oncomyia, Physoocphala texana, tibialis ab, Zodion fulvi- 
frons, obliqucfasoiatum in cop; Tachin.: Alophora aoncoventris ab, 
fumosa, Archytas analis ab, aterrima, Cistogaster occidua, pallasii 
fq, Clytiomyia, Epigrimyia polita, Linnacmyia, Ocyptcra lata, 
tenuis, Paradidyma, Phorantha humcralis, Spallanzania, Xantho- 
melana; Muse: Compsomyia, Phonnia terracnovae, Pseudopyrellia; 
Anthomy.: Limnophora. 

Lcpidoptera (29) — Nyynphal.: Argynnis, Rasilarchia archippus, 
Charidrj'as, Euptoieta, Hypatus, Junonia, Nconympha. Phyooides, 
Vanessa atalanta, cardui, huntera ab; Lycaen.: Chrysophanus, 
Evcrcs, Strjmon, Uranotcs; Papilion.: Eurema, Eur>mus, Lacrtias, 
Picris, Pontia, Zercne; Ilcspcrx.-. Epargj'rcus, Limocborcs taumas, 
Pholisora catullus, Polites, Tbanaos juvenalis, martialis, Thor>bes 
batbyllus; Ctenuch.: Scepsis. 

Coleoptera (9) — Ccramhyc.: Typoccrus sinuatus f q ; CurcuUon.: 
Centrinus scutellum-album fq; Mordell.: Mordtlla marginata. 8- 
punctata ; lihijtiphor.: Rbii)ii)horus dimidiatus, flavijirnnis, lim- 
batus ab; Scarnhar.: Trichius afflnis, pigcr. 

Hemiptera (5) — Caps.: Calocoris; Lyf/ar.: LygaeiLi, Onoopeltus 
fq, Ortholomus; Peniatom.: Euchi.stus ictericus. 



122 FLOWERS AND INSECTS— XXVI 

Pycnanthemum pilosum (14:106). — Blooms July 5-Septem- 
ber 8 ; 113 visitors observed, July 21-August 29 ; Mis, W. 

Long-tongued Bees (17) — Ap.: Apis ab; Bomh.: Bombus ameri- 
canorum ^ ; Ceratin. : Ceratina $ ; Megachil. : Megachilini : Megachile 
brevis $, mendica J*, petulans (^, fp, Xanthosarus J*; Coelioxyini 
(J*): Coelioxys germana fq, 8-dentata, sayi; Epeol.: Epeolus 
bifaseiatus <^ $, ab, Triepeolus eoncavus <^ ?, fq, remigatus ?, fq, 
simplex J*; Eucer.: Bpimelissodes obliqua J*, Melissodes agilis (^, 
eomptoides J* $, ab. 

Short-tongued Bees (16) — Halict.: Agapostemon radiatus J*, 
ab, Augoehlora viridula J* $, fq, Cbloralietus pilosus $, sparsus $, 
sc, ab, versatus J* $, sc, ab, zephyrus $, Evylaeus arcuatus ,^ $, 
pectoralis $, Halictus lerouxii J* $, ab, parallelus c^ ?, fq, Odontal- 
ictus J* $, ab, Seladonia J* ?, ab ; Sphecodini : Sphecodes arvensis (^ 
5, f q, Sphecodium cressonii ^ ; Prosopid. : Prosopis ziziae 5 ; Pan- 
urg.: Calliopsis andreniformis (^ $, se, fq. 

Other Hymenoptera (43) — Sphec: Ammobia ichneumonea, 
nuda, Isodontia apicalis, Priononyx atrata, Sphex gracilis fq, nigri- 
cans, pictipennis fq, procera, vulgaris; Bernbic: Bembix nubilli- 
pennis ab, Bicyrtes 4-fasciata, ventralis, Stictia, Stictiella; 8coli.: 
Elis interrupta, 5-cincta ab, Scolia bicineta; Philanth.: Cerceris 
compacta, frontata, fumipennis fq, Eucerceris, Philanthus punc- 
tatus fq, ventilabris fq; Vesp.: Polistes variatus; Eunien.: Leio- 
notus anormis, arvensis, dorsalis, foraminatus ab, fundatus, his- 
trionalis, molestus fq, scrophulariae, vagus f q, Pterochilus, Zendalia 
zendaloides type; Crahron.: Anacrabro, Solenius; Oxyhel.: Noto- 
glossa frontalis; Larr.: Tacbytes aurulentus, elongatus, mandib- 
ularis; Pompil.: Priocnemoides fulvicornis; Chrysid.: Hedychrum 
wiltii. 

Diptera (31) — Stratiomy.: Stratiomyia meigenii; Syrph.: 
Eristalis dimidiatus, tenax, transversus, Syritta ab; Bomhyli.: 
Anthrax fulvohirta, Exoprosopa emarginata, fascipennis ab, Geron 
rufipes, Systoechus; Conop.: Conops xanthopareus fq, Oncomyia, 
Physocephala tibialis, Zodion fulvifrons, obliquef asciatum ; Tachin.: 
Archytas analis ab, aterrima, Cistogaster occidua, pallasii, Ocyptera 
tenuis, Phorantha magna, purpurascens, Senotainia trilineata, 
Siphona, Spallanzania, Trichopoda pennipes, Trichophora; Sar- 
cophag.: Helicobia helicis; Muse: Compsomyia, Phormia regina, 
Stomoxys. 

Lepidoptera (4) — Nymphal.: Phyciodes; Papilion.: Pontia; 
Hesperi.: Epargyreus, Thanaos martialis. 

Coleoptera (2) — Rhipiphor.: Khipiphorus dimidiatus in cop, 
limbatus. 



CHARLES ROBERTSON 123 

Pycnanthemum virginianum (14: lOMJ). — Blooms July 12- 
September 7 ; 66 visitors observed, July 12-.September 6 ; Mis, W. 

Long-tongued Bees (10) — Ap.: Apis ab; Jiumb.: Bombias 
scutellaris ^, separatus $; Mccjavhil.: Neotrypetes truncatus $, 
Coelioxys 8-dentata $; Epeol.: Epeolus bifaseiatus (^, Trieijcolus 
concolor J* $, fq; Euccr.: Epinielissodes atrijjes $, Florilegus (^, 
Melissodes comptoides <^ $. ♦ 

Short-tongued Bees (15) — Halict.: Agapostemon radiatus <^, 
ab, Augochlora fervida $, viridula (^ $, Chloralietus sparsus (^, fcj, 
versatus (^ $, ab, Evylaeus arcuatus ^T, pectoralis $, Ilalictus 
lerouxii ^ $, parallelus $, Odontalictus $, Seladonia ^T ?» ^^j 
Spheeodini: Drepanium $, Spliecodes arvensis ^T $> f^^'J Nomi.: 
Paranomia c^; Panurg.: Calliopsis andreniformis (^ $, 

Other Ilymenojitera (23) — Sphec: Ammobia nuda, pennsyl- 
vanica, Sphex gracilis, nigricans, pictipennis, procera ab, vulgaris; 
Bemhic: Bicyrtes 4-fasciata, ]Megastizus, Stictiella; Scoli.: Elis 
interrupta, 5-cincta, Scolia bicincta; Philanth.: Cerceris fumi- 
pennis, Eucerceris f q ; Eumen.: Eumenes fraternus, Leionotus 
arvensis, dorsalis, foraminatus fq, Zethus; OxyhcL: Xotoj^lossa 
americana; Larr.: Tachytes aurulentus, elongatus. 

Diptera (14) — Syrph.: Eristalis tenax, Sphaerophoria, Syritta; 
Bomhyli.: Exoprosopa fasciata, fascipennis ab, Systropus; Conop.: 
Oncomyia, Zodion fulvifrons; Tachin.: Alophora aeneoventris, 
Archytas analis ab, Cistogaster occidua, Spallanzania fq, Tricho- 
poda pennipes; Muse:: Corapsomyia fq. 

Lepidoptera (2) — Nymphal.: Phyciodes f(i; Ptipilion.: Pontia. 

Coleoptera (1) — Bhipiphor.: Rhipii)horus limbatus. 

Hemiptera (1) — Lygae.: Lygaeus. 

Scutellaria canescans (14: 119-20),— Blooms July 7-Septem- 
ber I'J; 13 visitors observed, July 31-August 26; Ma, R. 

Long-tongued Bees (6) — Bomb.: Bombias auricomus $, sep- 
aratus §, Bombus americanorum J* $, sc, ab, eonsimilis $, se, im- 
patiens ^, sc ; Ceratin.: Ceratina $. fq, n. 

Short-tongued Bees (3) — Halict. ($, sucking at holes made by 
Leionotus) : Chloralietus sparsus, versatus, Oxystoglossa confusa. 

Other Hymenoptera (1) — Eumen.: Leionotus foraminatus, per- 
forating, 

Diptera (1) — Bombyli.: P^xoprospa fasciata n, 

Lepidoptera (2, n) — Hespcri.: Atrytone zabulon, Epargj-reus, 

Scutellaria lateriflora.— Blooms July IS-Sfptcniber 28, 1 visitor 
observed, July 20 ; Ma, R. 



124 FLOWERS AND INSECTS— XXVI 

Long-tongued Bees (1) — Eucer.: Melissodes bimaculata $. 

Scutellaria parvula (14: 118-9).— Blooms May 8-June 29; 16 
visitors observed, May 19-June 3; Ma, R. 

Long-tongued Bees (6) — Bomb.: Bombus americanorum 5; 
Ceratin. : Ceratina J* $, ab, Megachil. : Osmiini : Alcidamea simplex 
,, J* $, sc, ab, Diceratosmia $, Osmia pumila 5 sc ; Megachilini : Mega- 
chile brevis J*. 

Short-tongued Bees (5) — Halict. ($) : Chloralictus pilosus, 
pruinosus fq, type, tegularis fq, Evylaeus peetoralis, Odontalictus. 

Diptera (2, f, n) — Syrph.: Sphaerophoria, Syritta. 

Lepidoptera (3, n) — Hesperi.: Ancyloxypha, Pholisora catuUus 
fq, Polites. 

Scutellaria versicolor (14: 120).— Blooms June 7- July 26; 10 
visitors observed, June 14-July 10 ; Ma, R. 

Long-tongued Bees (7) — Bomb. ($ ^) : Bombus americanorum, 
consimilis sc, fq; Ceratin.: Ceratina $, sc, n; Eucer.: Tetra- 
lonia dilecta 5; Anthophor.: Anthemoessa (^ 5, sc, fq, Anthophora 
2, sc, Clisodon $, sc. 

Diptera (1) — Syrph.: Rhingia f, n. 

Lepidoptera (2, n) — Papilion.: Euphoeades, Papilio. 

Stachys palustris (14: 124r-5). — Blooms June 2-September 28; 
21 visitors observed, June 2-September 10 ; Ma, R. 

Long-tongued Bees (10) — Botnb.: Bombias auricomus ^, 
Bombus americanorum <^ ^, fq, consimilis ^, impatiens ^; Ceratin.: 
Ceratina $, ab; Megachil.: Alcidamea simplex $, sc, fq, Megachile 
brevis $, ab; Nomad.: Holonomada superba $; Eucer.: Melissodes 
bimaculata cj* ?, fq ; Anthophor.: Anthemoessa J*. 

Short-tongued Bees (3) — Halict. ($) : Agapostemon viridulus, 
Chloralictus versatus c, n ; Panurg. : Calliopsis andrenif ormis (^. 

Diptera (3) — Syrph. (f, n) : Mesogramma marginata, Syrphus 
ribesii; Bombyli.: Systoechus. 

Lepidoptera (5, n) — Papilion.: Iphiclides; Hesperi.: Ancy- 
loxypha, Limochores taumas; Noctu.: Plusia precationis, simplex. 

Teucrium canadense (14:101-2). — Blooms June 19-Septem- 
ber 7; 45 visitors observed, June 30- August 19; Mas (Ma), R. 

Birds {l)—Trochil.: Trochilus. 

Long-tongued Bees (28) — Ap.: Apisab; Bomb.: Bombias scutel- 
laris ^, separatus J* $ ^, fq, Bombus americanorum J* ^, sc, fq, 
consimilis ^, impatiens ^, fq, Psithyrus variabilis 5; Ceratin.: 
Ceratina 5, fq, n; Megachil.: Osmiini: Alcidamea simplex $; 



CHARLES nOBERTSON 125 

Megachilini : Megacliile brevis (^ $, sc, fq, mendiea $, Sayapis saji 
(^ 9. Xantho.sarus (^ $; Coelioxyini: Coelioxys gormana $; Epeol.: 
Triepeolus concavus <^, conc-olor ^T $> ^Q. simplex <^; Eucer.: Epi- 
melistjodes obliqua c^ $, Florilogus (^ $, sc, fq, Melissodes agilis (^, 
bimaculata (^ $, ab, eomptoidcs c^, fcj, pi'talostcmonis $, trinodis 9i 
variabilis ^T, vernoniana (^ $; .■l/i//io/.i/ior.: Amcgilla (^, Anthe- 
mocssa $. 

Short-tongued Bees (4) — Ilalict.: Ai^apostomon viridulus 9i 
Halictus lorouxii J* $, Oxystoglossa confusa $, n, pura $, n. 

Other HjTTienoptera (1) — Bemhic: Bembix nubillipcnnis. 

Diptcra (5) — Bomhyli.: Exoprosopa fasciata, faseipennis, Sys- 
toechus; Conop.: Physocephala texana, Stylogaster biannulata. 

Lepidoptera (6) — Lycaen.: Everes; Papilion.: Eur>inus, Laer- 
tias; Ilesperi.: Atrytone delaware, Polites; Sphing.: Ilemaris 
axillaris. 

Laura CEAE 

Sassafras variifolium (9: 164-5).— Blooms April 27-May 4; 91 
visitors observed, April 27-May 4; Pol, Y. 

Long-tongued Bees (1) — Megachil.: Osmia pumila $. 

Short-tongued Bees (16)— Ilalict. ($) : Chloralietus cre.ssonii, 
illinoensis, sparsus se, fq, versatus se, zei)hyrus se, Evj'laeus arcu- 
atus, Halictus lerouxii ; Sphecodini : Sphecodes arvensis, minor 
type; Andren: Andrena cariini $, salictaria c^, Parandrena <^, 
Pterandrena lauracea $, type, Trachandrena claj-toniae (^, fq, 
forbesii $, hippotes (^. 

Other Hymenoptera (12) — Vesp.: Polistes pallipes, variatus; 
Pompil.: Cn^ptocheilus conicus; Ichneuvwn.: Glypta rufiscutellaris, 
Idiolespa, Ophion, Pirapla annulipes; Tenthredin.: Dolerus bicolor, 
Hylotoma macleayi, Macrophya epinota, Monophadnus, Opistho- 
neura. 

Diptera {51)—Bihion.: Bibio femoratus fq, pallipes fq; SimuU.: 
Siraulium; Stratiamy.: Sargus ; Syr ph.: Brachyi)alpus frontosus, 
Chilosia capillata, punctnlata fq, Chrysogaster Ontario. Triorhina 
umbratilis fq, Eristalis dimidiatus, transversus, Ilelophilus similis, 
Melanostoma obscurum, Mesogramma marginata, Myiolepta strigil- 
ata, Orthoneura nitida, Platychirus hyperboreus, quadratus, 
Psilota, Sphacrophoria, Syrphusamericanus. ribesii, torvus; Empid.: 
Empis avida, compta type, otiosa, Rhamphomyia exi|?ua, limbata, 
mutabilis fq, piligeronis type, priapulus fq, ravida fq, in cop, type, 
sordida; Tachin.: Euphorocera claripenni.s, Oonia capitata. Lin- 
naemyia, Panzeria, Tachina robusta; Sarcophafj.: Bocttcheria. 
CjTiomyia fq, Helicobia helicis, Sarcophaga cimbicis, sinuata; 



126 FLOWERS AND INSECTS— XXVI 

Muse. : Lucilia caesar, Morellia f q, Phormia regina, Pseudopyrellia ; 
Anthomy.: Calythea, Coenosia antica, Homalomyia prostrata, 
Phorbia acra ab, platura ab; Agromyz.: Agromyza aeneoventris, 
latipes; Lonchae.: Lonchaea aberrans; Oscin.: Chlorops assimilis; 
ScatopTiag. : Scatophaga. 

Lepidoptera (1) — Nymphal.: Vanessa huntera. 

Coleoptera (3) — Coccinel.: Megilla; Lampyr.: Telephorus bi- 
lineatus fq; Oedemer.: Asclera punctieollis. 

Hemiptera (1) — Corimelaen.: Corimelaena pulicaria. 

Leguminosae 

Amorpha canescens (3:80-1). — Blooms June 6- July 24; 49 
visitors observed, June 12-28 ; Mis, R. 

Long-tongued Bees (10) — Bomb.: Bombias separatus ^, Bombus 
americanorum 5 ^, so, Psithyrus variabilis $ ; Ceratin. : Ceratina $ ; 
Megachil. (2): Trypetini: Neotrypetes truncatus sc; Osmiini: 
Aleidamea simplex, Hoplitis sc, fq; Megachilini: MegacMle brevis 
se ; Coelioxyini : Coelioxys 8-dentata, sayi. 

Short-tongued Bees (15) — Halict: Agapostemon texanus $, 
Chloralictus pilosus 5, sc, sparsus $, sc, tegularis $, versatus $, sc, 
fq, Curtisapis forbesii J^, Halictus lerouxii J* $, sc, fq, parallelus $, 
Oxystoglossa confusa $, similis ,^ $, sc, Seladonia J* $, sc ; Prosopid. 
($, f, n) : Prosopis pygmaea, ziziae; Collet.: Colletes eulophi J* $, 
se, fq; Panurg.: Calliopsis andreniformis $. 

Other Hymenoptera (16) — Sphec: Isodontia apicalis, Priononyx 
atrata fq, thomae, Sphex nigricans fq, pictipennis, procera, vul- 
garis; Bembic: Bicyrtes ventralis; Scoli.: Elis 5-cincta; Philanth.: 
Cerceris bicornuta, Philanthus ventilabris; Eumen.: Eumenes fra- 
ternus, Leionotus anormis, dorsalis; Larr.: Tachytes elongatus, 
pepticus. 

Diptera (5) — Syrph. (f, n) : Paragus bicolor, Sphaerophoria, 
Tropidia mamillata; BomhylL: Anthrax sinuosa f, n, Toxophora. 

Coleoptera (3, f, n) — Chrysomel.: Diabrotica atripennis, 12- 
punctata; Melo.: Macrobasis. 

Amorpha fruticosa. — Blooms May 10-June 4 ; 9 species and 18 
individuals taken on May 27; Mis (Mas), R. 

Long-tongued Bees (3: 10) — Ceratin.: Ceratina $, sc, 8; Mega- 
chil. : Coelioxys sayi J*, 1 ; Nomad. : Centrias americanus $, 1. 

Short-tongued Bees ($, 6: 8) — Halict.: Chloralictus sparsus sc, 
1, tegularis sc, 1, Evylaeus pectoralis sc, 3 ; Prosopid. : Prosopis 
saniculae 1, sayi 1, ziziae 1. 



CHARLES ROBERTSOX 127 

Amphicarpa pitcheri (3:200-1). — Blooms August 1(>-Scptcm- 
ber 10; 4 visitors observed, Au^'ust 22-30; Ma. R. 

Birds {l)—Trochil.: Troehilus. 

Long-tongued Bees (3) — Bomb.: Bombus americaiiorum ^T $> 
eonsimilis $, sc, impatiens $, sc. 

Apios tuberosa. — Blooms July 3-August 2G ; 2 visitors observed, 
July 20, Au-^ust 12; Ma, K. 

Long-tongued Bees (2, $) — Mcgachil.: Megaehile brevis sc, 
mendica fq. 

Astragalus canadensis (16:1G2). — Blooms July :i-August 2G ; 
10 visitors observed, July 7-August 2; Ma, Y. 

Long-tongued Bees (7) — -^Ip.; Apis; Bomb.: Bonibias auri- 
eomus $ $, sc, fq, scparatus $, Bombus americanorum $ ^, sc, fq, 
Stelid.: Anthidium psoraleae (^ $, fq, in cop; Mcgachil.: Anthemoia 
2; Eucer.: Melissodes bimaculata (^. 

Short-tongued Bees (1) — Halict.: Ilalictus parallelus $, 

Other Ilymenoptera (1) — Eumen.: Leionotus fundatus. 

Lepidoptera (1) — Hesperi.: Thanaos martialis n. 

Astragalus mexicanus (3:199, 16: 162).— Blooms April 15- 
May 12; 16 visitors observed, April 19-May 4; Ma, Y. 

Long-tongued Bees (11) — Bomb. ($) : Bombias auricomus sc, 
separatus, Bombus americanorum ab; Mcgachil.: Osmia atriventris 
(^ $, sc, illinoensis $, sc, coUinsiae $, sc, fq, pumila $, sc, fq ; Eucer.: 
Tetralonia dilecta cf $, ab, dubitata $, sc, ab, robertsonii $, sc, type; 
Anthophor.: Anthophora J* $, sc, fq. 

Diptera (1) — Bombyli.: Bombylius major. 

Lepidoptera (4, n) — Papilion.: Eurymus, Papilio; Ucaperi.: 
Thanaos icelus, juvenalis. 

Baptisia bracteata (5 : 176-7).— Blooms April 30-^Iay 19; 4 
visitors observed, .May 1-19 ; Ma, W. 

Long-tongued Bees (4) — Bomb.: Bombias separatus $, Bombus 
americanorum $; Megachil.: Centrosmia $, sc; Eucer.: Tetralonia 
dilecta ^^ $, fq. 

Baptisia leucantha (3:79). — Blooms June 10-September 8; 2 
visitors observed, July 11 and often; Ma, W. 

Long-tongued Bees {l)—Bomb.: Bombus americanorum 5, sc, 
ab. 

Lepidoptera (1) — Papilion.: Callidryas n. 

Cassia chamaecrista (3: 202-3).— Blooms June 28-October 5; 
24 visitors observed, July 9-September 15; Ma, Y. 



128 FLOWERS AND INSECTS— XXVI 

Long-tongued Bees (18, c) — Ap.: Apis fq; Bomb.: Bombias 
auricomus $ ^, ab, scutellaris $ ^, separatus ^, ab, Bombus ameri- 
eanorum ^, ab, consimilis ^, impatiens $ ^; Megachil. ($) : Mega- 
chile brevis fq, e and cutting petals, generosa ab, mendica, petulans, 
Xanthosarus; Eucer.: ($), Epimelissodes atripes ab, oligolege, 
Florilegus, Melissodes bimaculata, comptoides ab, variabilis ; Antho- 
phor. : Amegilla 5, oligolege. 

Short-tongued Bees (5, $, csp, n) — Halict.: Agapostemon radia- 
tus, texanus, Augochlora fervida, Chloralictus pilosus, versatus. 

Diptera (1) — Syrph.: Milesia fsp, n. 

Petiolar nectaries. — On sixteen days, June 29-August 26, the 
following 67 visitors were observed : — 

Ants (4 ^) — Formic: Camponotus eastaneus Formica fusca, 
schaufussi fq, Lasius f q. 

Short-tongued Bees (6) — Halict.: Chloralictus sparsus J* $, ab, 
tegularis J*, versatus <^ $, fq, zephyrus J*, Evylaeus pectoralis J*, 
Oxystoglossa similis J*. 

Other Hymenoptera (43) — Sphec: Chalybion, Chlorion, 
Sceliphron; PJiilanth.: Cerceris kennicottii, rufinoda; Eumen.: 
Leionotus f oraminatus ; Crahron.: Lindenius robertsoni type, Rho- 
palum scutellatum ; Oxyhel.: Notoglossa americana, frontalis; 
PempJiredon. : Psen ; Larr. : Astatus unicolor, Lyroda, Notogonidea, 
Tachysphex acutus, belfragei fq, mundus, tarsatus, Tachytes 
maestus, mergus, obscurus, sericatus; Nysson.: Nysson rufiventris, 
Zanysson aurinotus f q, plesia ; Pompil. : Arachnoproctonus, Poecilo- 
pompilus navus, Prioncnemis, Priocnemoides fulvicornis, termi- 
natus, Psammochares pretiosa, relativus; Tiphi.: Tipha punctata, 
robertsoni; Mutill. {^) : Mutilla hexagona fq, sayi, Sphaeroph- 
thalma; Chrysid.: Chrysis intricata, texana, Tetrachrysis montana, 
Holopyga; Chalcid.: Perilampus cyaneus; Bracon.: Apanteles 
terminalis. 

Diptera (13) — Tahan.: Tabanus; Syrph.: Mesogramma margi- 
nata, polita, Syritta; Conop.: Oncomyia; Tachin.: Chaetoplagia, 
Exorista confinis, Senotainia rubriventris, trilineata; Sarcophag.: 
Helicobia helicis; Muse: Pseudopyrellia ; Ortal.: Rivellia 4-fas- 
ciata ; Oscin. : Chlorops assimilis. 

Hemiptera (1) — Caps.: Lygus. 

Cassia marilandica (3:203-4). — Blooms July 1- August 26; 3 
visitors observed, July 21 ; Ma, Y. 

Long-tongued Bees (1) — Bomh.: Bombus americanorum ^, c. 

Short-tongued Bees (2, $, csp, n) — Halict.: Chloralictus sparsus, 
Oxystoglossa confusa. 



CHARLES ROBERT soy 129 

Petiolar nectaries. — Five visitors observed on July 21, 30. 
Ants (4, ^) — Formic: Cain|>onotus IjerculaneuH 7, Formica 
schaufussi 1, Lasiiis 2; Myrmic: Cremastofraster 3. 
Coleoptera (1) — Coccinell.: Coccinella 9-notata 1. 

Cercis canadensis (3: 201-2).— Blooms April 4 .May 17; 52 
visitors observed, April 21-May 5; Mi, R. 

Lon«^-tonf?ued Bees (22) — Ap.: Apis sc, ab; Bomb.: ($) : 
Bombias auricomus ab, separatus se, Bombiis americanorum, con- 
similis, impatiens; Ccratin.: Zaodoutomerus f^; Megachil. (sc) : 
Centrosmia (^ $, Ceratosmia (^ $, ab, Diceratosmia $, Osmia atri- 
ventris $, piimila $, fq; Nomad.: Gnathias cuneatus ^, Ilolonomada 
affabilis $, Nomada denticulata cT, sayi $, Xanthidium luteoloides 
$, luteolum (^ $; Euccr.: Tetralonia l)elfrapei (^, dilecta ^ $, sc, in 
cop, ab; Anthophor.: Anthophora J* $, iq, Emphoropsis (^. 

Short-tonfj:iied Bees (19) — Ilalict. ($) : Agapo.stemon radiatus, 
Augrochlora viridula, Chloralictus pilosus, sparsus sc, ab, versatus 
sc, fq, zephyrus, Curtisapis coriacea, forbesii, Evylaeus arcuatus, 
Halictus lerouxii sc, fq, Oxystoglossa confusa, pura, Seladonia sc, 
ab; Collet.: Colletes inaequalis (^ $, sc, ab; Andren.: Andrena car- 
lini 2, sc, mandibularis $, sc, sayi $, sc, Opandrena cres.sonii (^, 
Trachandrena claytoniae $, sc. 

Other Hymenoptera (1) — Vesp.: Polistes variatus. 

Diptera (4) — Empid.: Empis otiosa fq, Paehymeria, Rham- 
phomyia priapulus; Bomhyli.: Bombylius major. 

Lepidoptera (5, n) — Nymphal.: Vanessa atalanta, huntera; 
Lycaen.: Everes; Ilesperi.: Thanaos icelus, juvenalis. 

Coleoptera (1) — Ccrambyc: ^lolorchus n. 

Crotalaria sagittalis. — Blooms June 14— October 9 ; 8 visitors 
observed, June 16-July 9 ; Ma, Y. 

Long-ton^ed Bees (6) — Bomb.: Bombus americanorum $; 
Megachil.: Megachilini: Megachile brevis (^ $, sc, ab, generosa $, 
Sarofraster $, sc ; Coelioxyini : Coelioxys 8-dentata $, sayi $. 

Lepidoptera (2, n) — Lycaen.: Everes; Papilion.: Pieris. 

Desmodium bracteosum (3:83). — Blooms July 11 -August 29; 
3 visitors observed, August 13, 22 ; Ma, R. 

Long-tongued Bees (3, c) — Bmnb.: Bombus americanorum 5; 
Mnjiirhil.: Megaehile l)revis $; Euccr.: Melissodes bimaculata 9- 

Desmodium canadense (3:83). — Blooms June 13-Septembor 
7; 6 visitors observed, July ll-August 20; Ma, R. 



130 FLOWERS AND INSECTS— XXVI 

Long-tongued Bees (6, c) — Bomb.: Bombias separatus ^, 
Bombus amerieanorum ^, fq; Megachil ($) : Megachile brevis fq, 
mendica, petulans; Eucer.: Melissodes bimaculata $. 

Desmodium canescens. — Blooms July 11-September 7; 1 vis- 
itor observed, September 1 ; Ma, R. 

Long-tongued Bees (1) — Megachil.: Megachile brevis $, c. 

Desmodium dillenii (3:83). — Blooms July 30-September 7; 
5 visitors observed, August 2-September 2 ; Ma, R. 

Long-tongued Bees (5, c) — Bomb.: Bombus amerieanorum ^; 
Megachil. ($) : Megachile brevis, mendica, petulans; Eucer.: Melis- 
sodes bimaculata $. 

Desmodium grandiflorum. — Blooms June 22- August 17 ; 1 vis- 
itor observed, July 9 ; Mi, W. 

Short-tongued Bees (1) — Halict.: Chloralictus versatus $, c. 

Desmodium illinoense. — Blooms June 5-August 10; 9 visitors 
observed, June 30-July 9 ; Ma, K 

Long-tongued Bees (7)^ — Bomb. (^, c) : Bombias auricomus, 
Bombus amerieanorum ; Megachil. : Osmiini : Alcidamea simplex 
5, c; Megachile brevis fq, mendica, Sarogaster; Coelioxyini: Coeli- 
oxys 8-dentata, explor, n. 

Short-tongued Bees (1) — Halict.: Chloralictus versatus ?, csp, n. 

Lepidoptera (1) — Lycaen.: Everes, explor, n, 

Desmodium marilandicum (3:83). — Blooms August 22-Sep- 
tember 3 ; 1 visitor observed, August 22 ; Ma, R. 

Short-tongued Bees (1) — Panurg.: Calliopsis andreniformis $, c. 

Desmodium paniculatum (3: 83). — Blooms July 17-September 
23 ; 8 visitors observed, August 7-September 10 ; Ma, R. 

Long-tongued Bees (6, c) — Bomb.: Bombus amerieanorum ^, 
impatiens ^; Megachil. ($) : Megachile brevis, mendica, petulans; 
Eucer.: Melissodes bimaculata 2- 

Short-tongued Bees (2, $, c) — Panurg.: Calliopsis andrenifor- 
mis ; Nomi. : Paranomia. 

Desmodium sessilifolium (3: 83). — Blooms July 18-September 
18 ; 2 visitors observed, August 14, 15 ; Ma, R. 

Long-tongued Bees (1) — Megachil.: Megachile brevis $, c. 
Short-tongued Bees (1) — Halict.: Chloralictus versatus $, csp, n. 

Gleditsia triacanthos. — Blooms May 4-June 5, 13 visitors ob- 
served, May 24-June 3 ; Mis, Y. 



CHARLES ROBEiasUS 131 

Long-tongued Bees (2) — Ap.: Apis so, fq ; Bomb.: Bombias sepa- 
ratus $, sc. 

Short-tongued Bees (6, $) — Halict.: Agapostemon radiatus sc, 
Chloralictus illinoensis, sparsus; Andrin.: Andrena dunningii, 
Opandrena personata, Traehandrena claytoniae so. 

Diptera (5) — Syrph.: Eristalis dimidiatus, Mesogramma gemi- 
nata. Myiolepta varipes; EmpkL: Rharaphomyia mutabilis; 
Anthomy.: Phorbia platnra. 

Gymnocladus dioica (16: Uii)). — Blooms May 7-.Iinif 1 ; .") vis- 
itors observed, ^lay 10 ; Ma, W. 

Birds {l)—Trochil.: Trochilus. 

Long-tongued Bees (3) — Bomb.: Bombus amerieanorum $, fq, 
impatiens $, sc ; Eucer.: Tetralonia dilecta (^. 

Lepidoptera (1) — Papilion.: Euphoeades. 

Lespcdeza capitata (10 : 231). — Blooms July 23-Septembcr 17 ; 
4 visitors observed, August 14—26 ; Ma, R. 

Long-tongued Bees (2) — Bomb.: Bombus amerieanorum §; 
Megach.il.: Megachile brevis $, sc. 

Short-tongued Bees (1) — Panurg.: Calliopsis andreniformis <^. 

Lepidoptera (1) — Papilion.: Eurymus n. 

Lespedeza procumbens (10:230). — Blooms July 17-Scptcm- 
ber 21 ; 9 visitors observed, August 7-25 ; ^la, R. 

Long-tongued Bees (4) — Mcgachil. ($, sc) : Megachile brevis, 
mendica; Pasit.: Holcopasites illinoensis cT ?» ^Hf iyp<^ ; Eucer.: 
Melis.sodes bimaculata $. 

Short-tongued Bees (3) — Halict. ($, sc) : Chloralictus versatus, 
Oxystoglossa confusa ; Panurg.: Calliopsis andreniformis (^ $. 

Diptera (1) — Bombyli.: Systoechus. 

Lepidoptera (1) — Lycaen.: Everes n. 

Lespedeza virginica (10:230-1). — Blooms July 22-September 
14 ; 21 visitors observed, August 7-September 7 ; ^la, R. 

Long-tongued Bees (11) — Bomb.: Bombus amerieanorum (^ $, 
sc, fq ; Mcgachil.: Megachilini : Megachile brevis (^ $, sc, ab, petulans 
$, sc, Xanthosarus $; Coelioxyini : Coelioxys germana $; Epeol.: 
Triepeolus concavus $, simplex $; Eucer.: Melissodes autumnalis (^, 
comptoides $, nivea c^ $, sc ; Anthophor.: Amegilla $. 

Short-tongued Bees (5) — Halict. (cf ) : Odontalictus, Oxy.sto- 
plossa confusa, similis; Collet.: Colletes americanus (^ ; Panurg.: 
Calliopsis andreniformis (^ $. 

Diptera (1) — Anthomy.: Ilylemyia laevis. 



132 FLOWERS AND INSECTS— XXVI 

Lepidoptera (4, n) — Lycaen.: Everes fq, Uranotes; Papilion.: 
Eurymus ; Hesperi. : Limochores taumas. 

Melilotus alba (6: 473-4).— Blooms June 1-October 18; 153 
visitors observed, June 20-July 4; Pol (Mis), W. 

Long-tongued Bees (23) — Ap.: Apis ab; Bomb.: Bombias auri- 
comus $, scutellaris $, separatus 5 ^, fq, Bombus americanorum 
5 ^, fq, Psithyrus variabilis $; Ceratin.: Ceratina $, sc; Megachil.: 
Trypetini : Neotrypetes truncatus $ ; Osmiini : Alcidamea simplex 
$, sc; MegacMlini: MegacMle brevis (^ 5, sc, fq, petulans ^f, 
6-dentata J*, Xanthosarus J* ; Coelioxyini : Coelioxys 8-dentata J* ?, 
ab, rufitarsis $, sayi $; Xylocop.: Xylocopa (^ $; Nomad.: Centrias 
americanus $, Holonomada affabilis (^ % superba $, fq; Epeol.: 
Epeolus bifasciatus <^ $, ab; Eucer.: Tetralonia dilecta $; Antho- 
phor. : Anthemoessa J*. 

Short-tongued Bees (21) — Halict.: Agapostemon radiatus ?, 
viridulus $, Chloralictus albipennis $, sc, pilosus J*, pruinosus J*, 
versatus J" $, sc, ab, Evylaeus arcuatus $, sc, pectoralis J*, Halictus 
lerouxii J* 5, sc, parallelus J* $, Odontalictus $, sc, Oxystoglossa 
similis J* $, Seladonia $ ; Sphecodini : Spbecodes arvensis (^ $, f q, 
Sphecodium cressonii 5; Collet.: CoUetes eulophi <^ 5, fq, latitarsis 
(^ $, willistonii $; Nomi.: Paranomia J* $; Macropid.: Macropis 
J* ?, fq; Panurg.: Calliopsis andreniformis J* $, sc. 

Other Hymenoptera (52) — Sphec: Ammobia ichneumonea, 
pennsylvanica, Isodontia apicalis, macrocephala, Priononyx atrata, 
thomae, Sceliphron, Sphex nigricans, pictipennis fq, procera, vul- 
garis; Bemhic: Bembix nubillipennis, Bicyrtes ventralis, Stizus fq; 
Scoli.: Elis 5-cincta; Philanth.: Cerceris bicornuta, clypeata, com- 
pacta, finitima, prominens, Philanthus ventilabris; Vesp.: Polistes 
rubiginosus fq, variatus; Eumen.: Ancistrocerus tigris, Eumenes 
belfragei, fraternus, Leionotus anormis fq, arvensis, clypeatus, dor- 
salis fq, foraminatus fq, fulvipes, histrionalis, megaera, ziziae, 
Monobia; Crabron.: Solenius fq; Oxyhel.: Notoglossa americana; 
Larr.: Tachytes elongatus; Pompil.: Anoplius illinoensis, Batizonus, 
Ceropales bipunctata fq, elegans, fulvipes, Episyron, Lophopom- 
pilus atrox, Poecilopompilus navus, Pompiloides americanus, margi- 
natus, Priocnemoides fulvicornis, Psammochares relativus; Tiphi.: 
Tiphia vulgaris. 

Diptera (36) — Taban.: Chrysops striatus; Stratiomy.: Stra- 
tiomyia meigenii; Syrph.: Allograpta, Eristalis aeneus fq, latifrons, 
Helophilus latifrons, Platychirus quadratus, Spbaerophoria, Syritta, 
Syrphus americanus; Empid.: Parempis; Conop.: Conops brachyr- 
rhyncus fq, xanthopareus, Oncomyia, Physocephala texana. Stylo- 



CHARLES ROBERTSON 133 

gaster biannulata, Zodion nanollura; Tachin.: Archytas analis, 
aterrima Bclvosia bifasciata, Cistoj^aster occidua, Cyi)hoccra ab, 
Euphoroccra claripennis, Liiinaeniyia ab, Ocyptrra lata, fq, Pachy- 
ophthalmus floridcnsis. .si«;natus, Scnotainia rubriventris, Spallan- 
zania, Tricliopliora. Winthoinia ; t><ircui)h<i(j.: Ilelicohia helicis, 
Sarcophafja cimbieis; Muse: Morollia, Phorraia rogina, Psoudo- 
pyrollia. 

Lepidoptera (14, n) — Xifmphal.: Anosia, Vanessa atalanta, hun- 
tera; Lycaen.: Cbrysophanus, Cyaniris, Strymon, Uranotes; 
Papilion.: Callidryas, Iphiclides, Papilio, Pontia; Ilespcri.: F^par- 
{?yreus, Limochores taunias; Sesi.: Sesia 6-fa.sciata. 

Coleoptera (5) — Ccramhyc: Typoeorus sinuatus; Curculion. : 
Centriniis piciimnus, scutellum-albiim f q ; MordcIL: Mordella mar- 
ginata; Scorahac: Trichius piger. 

llemiptera (2) — Lygac: Ly<^aeus; Pcntatom.: Podisus. 

Pctalostemum candidum. — Blooms June 20- August 30 ; 30 vis- 
itors observed, July 8-19; Mis, W. 

Long-tongued Bees (4) — Ap.: Apis; Bomb.: Bombias aurico- 
mus $, scutellaris ^, separatus $ ^, fq. 

Short-tongued Bees (11) — Halkt.: Agapostemon radiatus % 
Augochlora fervida $, Chloralietus sparsus $, sc, fq, versatus $, sc, 
ab, Ilalictus lerouxii (^ $, sc, fq, i)arallelus (^ $, fq, Odontalictus % 
Oxystoglossa confusa $, sc, sirailis $, fq, Seladonia (^ $, fq: 
ProsopifL: Prosopis ziziae $. 

Other Hymenoptera (7) — Sphec: Ammobia ichneumonea, 
Priononyx atrata; Bemhic: Bicyrtes 4-fasciata; Scoli.: Elis inter- 
rupta, 5-cineta ab; Philunth.: Cerceris bicornuta, Philanthus ven- 
tilabris. 

Diptera (7) — Syrph.: Allograpta, Tropidia quadrata ; Mida.: 
Midas clavatus; Conop.: Conops xanthopareus fq, Zodion nanellum ; 
Tachin.: Archytas analis; Muse: Corapsomyia. 

Lepidoptera (1) — Lycaen.: Everes. 

Pctalostemum purpureum (3: 81-2). — Blooms June 27-Aiigu>t 
10; 94 visitors obsorvt'd. July 1-August 2; Mas, R. 

Long-tongued Bees (37) — Ap.: Apis sc, ab; Bomb.: Bombias 
auricomus $ §, sc, scutellaris 5, sc, fq, separatus (^9 5, sc. ab, 
Bombus amerieanorum cT $ 5, sc, ab, impatiens $ 5, sc. fq, Psithy- 
rus variabilis $; Ccratin: Ceratina 9. ^ ; Megachil: Trypetini: 
Xeotrypetes truncatus $, .sc ; Osmiini : Alcidamea simplex 9. «c. 
Iloplitis 9, sc, fq ; Megachilini : Megachile brevis (^ 9. sc. a^. 6-den- 
data cf, Sayapis sayi 9, Xanthosanis <^ 9. sc. 'Q; Coelioxyini: 



134 FLOWERS AND INSECTS— XXVI 

Coelioxys alternata $, germana 5, 8-dentata J* 5, fq, riifitarsis ^ $, 
sayi $; Xylocop.: Xylocopa $; Epeol.: Epeolus bifasciatus $, Tri- 
epeolus coneavus (^ $, f q, concolor <^ $, ab, lunatus J*, remigatus 5 ; 
Eucer.: Epimelissodes obliqua J* 5, se, fq, Melissodes agilis (^ $, 
bimaculata J* $, sc, ab, comptoides J* $, fq, petalostemonis 5, sc, fq, 
type, trinodis J*, variabilis J* $, sc, fq, vernoniana J* $, Tetralonia 
dileeta $, sc, Xenoglossodes 5 ; Anthophor. : Amegilla (^. 

Short-tongued Bees (18) — Halict.: Agapostemon radiatus $, 
splendens $, texanus J* 5, viridulus $, sc, ab, Augochlora f ervida % 
sc, fq, Chloralictus albipennis $, e, fq, pilosus $, sc, pruinosus % 
versatus $, sc, fq, Halictus lerouxii (^ $, sc, f q, parallelus J* $, sc, ab, 
Odontalictus 5, sc, Oxystoglossa confusa $, sc, similis 5, sc, ab, Sela- 
donia?, sc, ab; Collet.: Colletes albescens 5, sc, oligolege, robertsonii 
(^ 2, sc, oligolege, type; Nomi.: Paranomia J*. 

Other Hymenoptera (15) — Sphec: Ammobia ichneumonea, 
Priononyx atrata, thomae, Sphex gracilis, nigricans fq, pictipennis, 
procera, vulgaris; Bemhic: Bembix nubillipennis, spinolae; 8coU.: 
Campsomeris, Elis 5-eincta fq; Philanth.: Cerceris bicornuta, 
Pbilanthus ventilabris; Eumen.: Eumenes fraternus. 

Diptera (12) — 8yrph.: Allograpta, Eristalis latifrons, Helo- 
philus latifrons, Mesogramma marginata, Sphaeropboria, Tropidia 
quadrata; Bombyli.: Exoprosopa 'fasciata, Systoechus; Conop.: 
Oncomyia, Physocephala texana, Zodion obliquef asciatum ; Sarco- 
phag.: Sarcophaga cimbicis. 

Lepidoptera (6) — Lycaen.: Everes; Papilion.: Eurymus, Zerene; 
Hesperi. : Limochores taumas, Pholisora catullus, Polites. 

Coleoptera (4) — Ceramhyc: Typocerus sinuatus; Chrysomel.: 
Diabrotica 12-punctata; Melo.: Epicauta pennsylvanica, trichrus. 

Hemiptera (2) — Caps.: Calocoris; Pentatom.: Eusehistus 
ictericus. 

Psoralea onobrychis (3: 79-80).— Blooms May 27-July 31; 55 
visitors observed, June 15-July 16 ; Mas, E,. 

Long-tongued Bees (27) — Ap.: Apis fq; Bomh.: Bombias auri- 
comus ^, scutellaris ?, separatus $ $, sc, fq, Bombus americanorum 
(^ ^, impatiens ^; Ceratin.: Ceratina $; Stelid.: Anthidium 
psoraleae (^ $, fq, type; Megachil.: Osmiini : Alcidamea simplex $, 
sc, Diceratosmia 5, Osmia atriventris $ ; Megachilini : Chelostom- 
oides (^ $, sc, ab, type, Megachile addenda (^ $, sc, ab, brevis J* ?, sc, 
ab, generosa <^ 5, sc, fq, mendica J* $, sc, ab, petulans J*, fq, Oligotro- 
pus (^, ab, Xanthosarus (^ $; Coelioxyini: Coelioxys germana c^, 
modesta ^ 5, fq, 8-dentata J* ?, fq, sayi c? ?, fq; Epeol.: Epeolus in- 
terruptus $, type; Eucer.: Florilegus J*, Melissodes bimaculata J* $, 
Tetralonia dileeta ?. 



CHARLES ROBERTSON 135 

Short-tongued Bees (8) — Ilalict.: Agapostcmou radiatus (^ $, 
sc, Curtisapis coriaeea $, Evylaeus arcuatus $, Ilalictus lerouxii $, 
Seladonia (^ $, in cop; Collet.: CoUetes brevieornis $, fq, eulophi 
(^ $, so, ab, in cop; Panurg.: Calliopsis andrcniformis (^ 9» ^^f ^b> 
in cop. 

Other Ilymenoptera (7) — Sphcc: Priononyx atrata, thoinae, 
Sphex gracilis; Scoli.: Elis 5-cincta; Eumcn.: Leiouotus arvensis, 
dorsalis, Pterochilus. 

Diptera (7) — Syrph.: Tropidia niamillata; Bomhyli.: Anthrax 
parvicornis, sinuosa fsj), Bombylius atriceps, Exoprosopa fasciata; 
Conop.: Physocephala tibialis, Stylogaster biannulata. 

Lepidoptera (6, n) — Papilion.: Laertias, Pontia; Ucspcri.: 
Epargyreus, Thanaos juvenalis; Sphing.: Hemaris thysbe; Noctu.: 
Schinia. 

Robinia pseudacacia (int). — Blooms April 21-May 28; 11 vis- 
itors observed, May 9-25 ; Ma, R. 

Birds (l)—Trochil.: Troehilus ab. 

Long-tongued Bees (7) — Ap.: Apis; Bomb. ($) : Bombias auri- 
comus fq, seutellaris, separatus, Bombus americanorum {(\, impa- 
tiens ab; Eucer.: Tetralonia dilecta $. 

Lepidoptera (3, n) — Nymphal.: Anosia ; Papilion.: Ii)hiclides; 
Sphing.: Deilephila. 

Strophostyles helvola (3: 199).— Blooms July 7-Octobcr 19; 
8 visitors observed, July 31-August 26; Ma, R. 

Long-tongued Bees (8) — Bomb.: Bombus americanorum $; 
Megachil.: Megachile brevis J* $, sc, fq, generosa (^ $, so, ab, mendica 
(^ $, petulans $, .sc, fq, strophostylis $, sc, fq, oligolege, type, Oligo- 
tropus J*, Xanthosarus 2- 

Extra-floral nectaries. — The following 45 species were taken on 
the extra-floral nectaries, July 31-September 8 : 

Ants (3, ^) — Formic: Formica fusca ab, schaufussi, Lasius. 

Short-tongued Bees (2, $) — Halict.: Oxystoglossa eonfusa; 
Sphecodini : Sphecodes arvensis. 

Other Hymenoptera (23) — Sphec: Chalybion, Sceliphron; 
Philanth.: Cerceris clypeata, finitima, kennicottii fq. Philanthus 
punctatus; Vesp.: Polistes variatus, Vespula germanica; Eumcn.: 
Leionotus vagus; Oxybel.: Oxybelus 4-notatus; Trypoxyl.: Try- 
poxylon frigidum; Larr.: Astatus unicolor, Tachysphex mundus; 
Nysson.: Zanys.son aurinotus; Pompil.: Ageniolla longula, Lopho- 
pompilus atrox; Mutill. (c^) : Mutilla scrupea, Sphaerophthalma; 
Chrysid.: Iledychrum par\'um, Tetrachry-sis venusta; Bracon.: 
Agathis vulgaris; Ichneumon.: Diplazon, Limneria fura. 



136 FLOWERS AND INSECTS— XXVI 

Diptera (15) — Syrph.: Mesogramma marginata; Tachin.; 
Euphorocera claripennis, Paradidyma singularis type; Sarcophag.: 
Helieobia helicis, 4-setosa, Metoposarcophaga, Sarcophaga assidua, 
hunteri, marginata; Muse: Pseudopyrellia ; Anthomy.: Coenosia 
antica; Agromyz.: Lobioptera; Drosophil.: Drosophila; Ortal.: 
Camptoneura, Rivellia 4-f asciata ; Seps. : Sepsis. 

Coleoptera (1) — Coccinell.: Coccinella 9-notata. 

Hemiptera (1) — Caps.: Lygus. 

Strophostyles pauciflora. — Blooms July 11-October 15; 3 vis- 
itors observed, August 14, September 7, October 3 ; Ma, R. 

Long-tongued Bees (2) — Bomb.: Bombus americanorum ^; 
Megachil. : Megachile brevis $. 

Short-tongued Bees (1) — Panurg.: Calliopsis andreniformis $. 

Extra-floral nectaries. — Three visitors observed, July 29, Sep- 
tember 7. 

Ants (1) — Formic: Formica sehaufussi ^, 7. 

Short-tongued Bees (2) — Halict.: Chloralictus sparsus c^, 2, 
versatus cf ?, 6. 

Stylosanthes biflora (16: 163-5).— Blooms June 8-September 
9 ; 3 visitors observed, July 2-11 ; Ma, Y. 

Long-tongued Bees (1) — Bomb.: Bombus americanorum ^. 

Short-tongued Bees (1) — Panurg.: Calliopsis andreniformis 
?, fq. 

Lepidoptera (1) — Papilion.: Eurema n. 

Tephrosia virginiana (3:82). — Blooms June 10-July 2; 5 vis- 
itors observed, June 15-29 ; Ma, W. 

Long-tongued Bees (5) — Megachil.: Chelostomoides ?, sc, Mega- 
chile addenda J* $, sc, ab, brevis $, sc, mendica $, petulans (^ $. 

Trifolium hybridum (int). — Blooms May 14-June 25; 16 vis- 
itors observed, June 6-18 ; Mas, W. 

Long-tongued Bees (6) — Ap.: Apis sc, fq; Megachil. ($, sc) : 
Alcidamea simplex fq, Diceratosmia, Osmia cordata ; Nomad. : Holo- 
nomada affabilis $; Epeol.: Epeolus interruptus $. 

Short-tongued Bees (5) — Halict. ($) : Chloralictus versatus sc, 
Odontalictus, Oxystoglossa similis sc, Seladonia sc; Panurg.: Cal- 
liopsis andreniformis cf $. 

Other Hymenoptera (1) — Sphec: Priononyx atrata. 

Diptera (1) — Conop.: Zodion fulvifrons n. 

Lepidoptera (3, n) — Nymphal.: Charidryas; Lycaen.: Chryso- 
phanus; Hesperi.: Ancyloxypha. 



CUAHLKS ROBEIiTSON 137 

Trifolium pratense (iut, 5:177-8). — Blooms April 2G-Novcm- 
ber 1 ; 42 visitors observed, May 24-September 11 ; ^las, K. 

Birds {l)—rrochU.: Troehilus. 

Loiip-tongued Bees (18) — Bomb.: Honibias auricomus c? ^. 
seiitellaris $, separatus c? $ 5, se, ab, Bombus americanorum <^ $ 5. 
sc, ab, consimilis $, se, impatiens $, ridingsii <^, Psithyrus laborio- 
sus 2, variabilis $, fq; Stelid.: Anthidiuin psoraleae cT ?, ^, ^Q; 
Majachil. ($) : Osmiini : Aleidamca simplex, Osmia eordata sc; 
Megaohilini: ^legachile brevis se ; Kurcr.: Melissodes bimaculata (^, 
Tetralonia dilecta cf $, se, tVi; Anthuphor.: Amegilla $, Anthcmoessa 
(^ $. Anthophora $, sc. 

Short-tongued Bees (2, $, n) — Ualict.: Hal ictus lerouxii f; 
Panurg.: Calliopsis andreniformis c. 

Diptera (1) — Bomhyli.: Exoprosopa fasciata. 

Lepidoptera (20, n) — NymphaL: Anosia, Argynni-s, Vanessa 
atalanta, cardui, hinitera fq ; Lycacn.: Everes; Papilion.: Callidryas, 
Eurymus. Ileraclidcs, Ipliiclides, Laertias, Pai)ilio, Pieris, Pontia, 
Xanthidia; Hesperi.: Epargyreiis ab, Limochores taumas, Polites, 
Thorybes pylades; Sphing.: Ilemaris axillaris. 

Trifolium reflexum. — Blooms .May 22-June 22; 2 visitors ob- 
served. June 13; Mas, W. 

Long-tongued Bees (1) — Megachil.: Osmia atriventris $. 
Lepidoptera (1) — Lycaen.: Cyaniris n. 

_^ Trifolium repens (int). — Blooms April 2(J-0ctobcr 11; 80 vis- 
itors obsorved. May 12-July 14 ; Mas, W. 

Long-tongued Bees (33) — Ap.: Apis ab; Bomb.: Bombias sepa- 
ratus $. sc, Bombus americanorum $ $, sc, impatiens $ $, ridingsii 
5, sc, Psithyrus variabilis $; Ceratin.: Ceratina 9, sc; Stelid.: 
Anthidium psoraleae <^ $, sc, fq ; Megachil.: Trypetini : Neotry petes 
barbatus ^; Osmiini: Alcidamea simplex J* $, sc, ab, Dieeratosmia 
$, sc, ab, Iloplitis $, sc, fq. Osmia atriventris $, sc, fq, coUinsiae 9, 
sc, eordata $, distincta $, sc, pumila $, sc, ab; Megachilini: Anthe- 
mois $, Megacbile brevis (^ $, sc, fq, generosa ^T, mendica (^; 
Coelioxyini: Coelioxys 8-dentata c^ $. fq, sayi c^, f q ; Nomad.: Con- 
trias americanus $, Ilolonomada afTabilis (^ $, fq, superba 9. 'QJ 
Epeol.: Epeolus bifaseiatus J*, interruptus ^ $, Triepeolus remiga- 
tus (^ \ Eucrr.: Tetralonia dilecta (^, rosae $; Anthophor.: Anthe- 
moes.sa (^, Anthophora $, sc. 

Short-tonguod Bees (1;')) — Ilalicf.: Agapostemon radiatus 9. s<*. 
fq. viriduliis $, sc, Augochiora fer\'ida 9. viridula $, Chloralictus 
pilosus 9, sc, versatus 9, sc, Curtisapis coriacea 9. »c, fq. Ilalictos 



138 FLOWERS AND INSECTS— XXVI 

lerouxii (^ $, sc, fq, parallelus 5, sc, Odontalictus $, sc, Oxystoglossa 
confusa (^ $, fq, similis $, Seladonia J* $, sc, fq; Andren.: Opan- 
drena cressonii $, sc ; Panurg.: Calliopsis andrenif ormis (^ $, sc, f q. 

Other Hymenoptera (6) — 8phec.: Priononyx atrata, Sphex 
nigricans, pictipennis, iprocera; Bernbic: Microbembex ; Scoli: 
Campsomeris, 

Diptera (9) — Empid.: Parempis; Bombyli.: Bombylius atriceps, 
Systoechus, Thlipsogaster ; Conop.: Physocephala texana, tibialis, 
Stylogaster biannulata, Zodion fulvifrons; Tachin.: Archytas analis. 

Lepidoptera (17, n) — Nymphal.: Charidryas, Euptoieta, 
Vanessa huntera; Lycaen.: Cyaniris, Everes; Papilion.: Eurymus, 
IpMclides, Pieris, Pontia; Hesperi.: Ancyloxypha, Epargyreus, 
Limochores taumas fq, Pholisora catuUus, Polites, Thanaos juve- 
nalis, Thorybes pylades ; Noctu. : Plusia simplex, 

LiLIACEAE 

.Asparagus officinalis (int). — 7 visitors observed. May 11- 
August 5 ; Ma, Y. 

Long-tongued Bees (2) — Ap.: Apis; Megachil.: Anthemois 
(^ 2, sc, ab. 

Short-tongued Bees (3, $) — Halict.: Chloralictus versatus sc, 
zephyrus sc, Oxystoglossa similis e. 

Camassia esculenta (9: 266-7).— Blooms April 22-May 28; 48 
visitors observed, April 29-May 24; Mi (Ma), R. 

Long-tongued Bees (15) — Ap.: Apis ab; Bomb. ($) : Bombias 
auricomus, separatus, Bombus americanorum, impatiens; Ceratin.: 
Ceratina J*, Zaodontomenis J*; Megachil.: Osmiini: Ceratosmia $, 
Osmia pumila ^ 5 5 Megachilini : Megachile mendica (^ $ ; Nomad. : 
Centrias americanus J^, Holonomada affabilis $, superba J* ?, fq; 
Eucer.: Tetralonia belfragei, J*, dilecta J* $, fq. 

Short-tongued Bees (11, ?) — Halict.: Agapostemon viridulus, 
Chloralictus pilosus sc, ab, pruinosus sc, fq, versatus sc, fq, Curtis- 
apis forbesii, Evylaeus pectoralis fq, Halictus lerouxii sc, Odonta- 
lictus sc, Oxystoglossa confusa, similis, Seladonia sc, ab. 

Other Hymenoptera (4) — Vesp.: Polistes variatus; Eumen.: 
Ancistrocerus tigris, Leionotus clypeatus; Pompil.: Anoplius illi- 
noensis. 

Diptera (12) — Syrph.: Eristalis dimidiatus, Orthoneura nitida, 
pictipennis, Paragus bicolor, Syritta; Tachin.: Linnaemyia; 
Sarcophag.: Cynomyia, Helicobia helicis; Muse: Lucilia sericata, 
Phormia regina ; Anthomy. : Phorbia acra, platura. 



CHARLES ROBERTSON 139 

Lepidoptera (5) — Nymphal.: Charidryas, Vanessa atalanta, 
huntera; Papilion.: Eurymus fq; Uesperi.: Pholisora catullus. 
Coleoptera (1) — CoccinelL: llippodanu'a Lj-niaculata. 

Erythronium albidum (5: 69-71).— Blooms ^larch 17-May 2; 
28 visitors observed, March 24-April 22 ; Mi, W. 

Long-tongued Bees (11) — Ap.: Apis sc, ab; Bomb.: Bombiis 
impatiens $; Ceratin.: Ceratina (^; Megachil.: Centrosmia (^, Cera- 
tosmia cf, fq, Osmia eollinsiae (^, pumila J* $, ab; Nomad. (<S) '- 
Xanthidium dentariae, luteoloides, luteolum; Eucer.: Tetralonia 
belfragei c^, fq. 

Short-tongued Bees (9) — Halict. ($) : Chloralictus pilosus, ver- 
satus se, type, Ilalictus leroiixii, Seladonia; Collet.: CoUetes in- 
aequalis J*, ab; Andren.: Andrena carlini cT 9, sc, ab, erythronii 
(^ 5, sc, ab, type, sayi (^ $, sc, Trachandrena mariae $. 

Diptera (4) — Syr ph.: Brachypalpus frontosus f, n, Eristalis 
dimidiatus; Bombyli.: Bombylius major; Muse: Pseudopyrellia 
fq, n. 

Lepidoptera (3) — Papilwn.: Eurymus, Pieris; Hesperi.: 
Thanaos juvenalis. 

Ilemiptera (1) — Caps.: Lygus n. 

Lilium superbum. — Blooms June li>-,July 17; 3 visitors ob- 
served. July 2 ; ]\Ia, R. 

Lepidoptera. — Nymphal.: Anosia, Argynnis; Papilion.: Eu- 
phoeades. 

Melanthium virginicum (9 : 273-4). — Blooms June 12-July 11 ; 
30 visitors observed, June 27-July 5; ^li, W. 

Short-tongued Bees (1) — Halict.: Chloralictus versatus $, n. 

Other Ilymenoptera (3) — Sphec: Ammobia ichneumonea; 
Chalcid.: Perilampus triangularis n; Tcnthrcdin.: Ilylotoma 
humeralis. 

Diptera (19) — Straiiomy.: Stratiomyia meigenii ; Syrph. (n) : 
Me.sogramma marginata, Sphaerophoria, Syritta; Empid.: Parempis 
n ; Tachin. : Archytas aterrima, Cistoga.ster occidua, pallasii, Eu- 
phorocera claripenni.s, Linnaemyia, Paradidyma n. Trichopoda pen- 
nipes; Sarcophag.: Sarcophaga cimbicis; Muse: Lucilia caesar, 
Musca, P.seudopyrellia ; Anthomy.: Anthomyiella n, Calythea n; 
Oscin.: Chlorops mellea n. 

Lepidoptera (1) — Lycaen.: Cyaniris n. 

Coleoptera (6) — Chrysomel.: Diabrotica atripennis n; Curcu- 
lion.: Centrinites fq. n; Lampyr.: Photinus; Mordell.: Mordella 
marginata n, melaena fq, n; Scarabae.: Trichius piger, fq. 



140 FLOWERS AND INSECTS— XXVI 

Nothoscordum bivalve (9: 266).— Blooms April 9-May 18; 19 
visitors observed, April 20-May 9 ; Mi, W. 

Long-tongued Bees (9) — Megachil.: Osmia atriventris ^; 
Nomad.: Centrias americanus J*, Gnathias cuneatus 5, ovatus <^ ?, 
fq, Holonomada superba J*, fq, Nomada cressonii J* $, ab, type, 
parva cf, fq, sayi $, fq, Xantbidium luteoloides J*. 

Sbort-tongued Bees (3, ?) — Halict.: Chloralictus versatus sc, fq, 
Oxystoglossa similis ab; Andren.: Andrena nothoscordi, sc, type, 
oligolege. 

Diptera (3) — Syrph.: Mesogramma marginata, Spbaeropboria 
f q ; Bomhyli. : Bombylius pulebellus. 

Lepidoptera (4) — Lycaen.: Everes; Papilion.: Eurymus, Pieris; 
Noctu.: Plusia simplex. 

Polygonatum commutatum (9:268-9). — Blooms May 11-June 
23 ; 7 species and 23 individuals observed. May 23-June 9 ; Ma, W. 

Birds (1 : 4)— TrocM.; Trocbilus 4. 

Long-tongued Bees (5 : 18) — Bomb.: Bombus americanorum ?, 5, 
consimilis $, sc, 4; Ceratin.: Ceratina ?, sc, 2; Anthophor.: Antbe- 
moessa (^ 5, sc, 4, Antbopbora $, sc, 3. 

Sbort-tongued Bees (1:1) — Halict.: Oxystoglossa confusa 
?, c, n. 

Smilacina racemosa (9: 270).— Blooms May 7-30; 21 species 
and 44 individuals observed. May 8-23 ; Mi, W. 

Long-tongued Bees (1: 1) — Ap.: Apis c, 1. 

Sbort-tongued Bees (7: 13) — Salic. (?) : Cbloralictus obscurus 
c, 2, sparsus c, 2, versatus c, 1, zepbyrus 1, Evylaeus pectoralis c, 
4, 4-maculatus c, 2, Oxystoglossa pura sc, 1. 

Diptera (8: 19) — Culic: Culex nigripes 1; Syrph.: Cbilosia 
eyanescens f , 1, Criorbina decora 1, Volucella vesiculosa 5 ; Empid. : 
Empis bumilis 3, levicula 1; Tachin.: Sipbona 4; Muse: Lucilia 
caesar 3, 

Coleoptera (5: 11) — Anthic: Corpbyra terminalis 1; Bruch.: 
Brucbus mimus 5; Mordell.: Mordellistena biplagiata 3; Scarahae.: 
Tricbius affinis 1, Valgus 1. 

Smilacina stellata (9: 269-70).— Blooms April 25-May 12; 16 
species and 28 individuals observed, April 30; Mi, W. 

Long-tongued Bees (2: 2, J') — Ceratin.: Zaodontomerus 1; 
Nomad.: Nomada cressonii 1. 

Sbort-tongued Bees (12 : 20, $). — Ealic: Augocblora viridula sc, 
1, Cbloralictus obscurus sc, 1, smilacinae sc, 1, type, sparsus sc, 1, 
Evylaeus 4-maculatus sc, 5, Halictus lerouxii sc, 1, Oxystoglossa 



CHARLES ROBERTSON 141 

confusa sc, 4, pura sc, 1, similis sc, 1; Sphecodini: Sphecodium 
smilacinae 1, type; Andren.: Androna carlini 1, Opandrena cres- 
sonii sc, 2. 

Diptera (2: 6) — Einpid.: Empis Ininiilis ;") ; liumbyli.: IJom- 
bylius major 1. 

Smilax herbacea.— Blooms May 24-July 6; 9 spooics and 19 
individuals obscrvt'd, May 30, June 4, 6, 8; Mi, Y. 

On stuminatc flowers: — 

Lonj;-ton<,Miod Bees (1 : 1) — Ap.: Apis e, 1. 

Short-tonguod Bees (3: 11, §, sc)— //a/ic/.: Chloralictus ver- 
satus 3, Oxystof?lossa confusa 1, similis 7. 

Diptera (2: 4) — Sarcophag.: Sarcophaf?a eimbicis 3; Muse: 
Lucilia caesar 1. 

Lepidoptera (1: 1) — Nymphal.: Neonympha 1. 

Coleoptera (2: 2, f, n) — Ceramhyc: Euderces 1; Scarahae.: 
Euphoria fulgida 1. 

Smilax hispida. — Blooms May 3-June 3; 16 visitors observed. 
May 17-June 3; Mi, Y. 

Long-tongued Bees (5) — Ap.: Apis sc; Bomh.: Bdmbus impa- 
tiens $; Ceratin.: Ceratina $, sc; Megachil.: Osmia pumila $, sc; 
Nomad.: Xomada parva cf. 

Short-tongued Bees (6, $)— fl^a/Jc^; Agapostemon radiatus c, 
Chloralictus tegularis sc, zephyrus c, Evylaeus pcctoralis c, Oxysto- 
glossa confusa sc ; Andren.: Opandrena cressonii sc. 

Diptera (3)—Syrph. (f) : AUograpta, Mesogramma geminata, 
Syrphus americanus; Empid.: Empis loripedis; Conop.: Conops 
brachyrrhynchus. 

Stenanthium angustifolium.— Blooms June 24-July 24; 4 vis- 
itors observed. July 14, 16; Mi, "W. 

Short-tongued Bees (2)—IIalict.: Chloralictus sparsus $; Pro- 
sopid. : Prosopis ziziae c^. 

Diptera (2)—Syrph.: Syritta ; Tachin.: Ocyptera lata. 

Trillium sessile ( 9 : 271-3).— Blooms April 24-May 15; 1 vis- 
itor ob.servod, April 29, :Mi, R. 

Coleoptera (1) — Curadion.: Centrinites f, 10. 

Uvularia grandiflora (9: 270-1).— Blooms April 12-May 11; 8 
species and 19 individuals ob.served. April 17-29; Ma, Y. 

Long-tongued Bees (5:9, $) — Bomb.: Bombias separatu-s 1, 
Bombus americanorum 2. impatiens 1. ridingsii 4; Megachil.: Osmia 
atriventris 1. 



142 FLOWERS AND INSECTS— XXVI 

Short-tongued Bees (3: 10) — Andren.: Andrena carlini (^ $, sc, 
7, mandibularis ?, se, 2, pruni J*, 1. 

LOBELIACEAE 

Lobelia cardinalis (4: 68-9). — Blooms August 3-Septeinber 15; 
6 visitors observed, August 18-September 2; Ma (0), R. 

Birds (1) — Trochil.: Troehilus ab. 

Long-tongued Bees (1) — Bomb.: Bombus amerieanorum ^, fq, 
s, through slits, n. 

Short-tongued Bees ($, c, n) — Halict.: Chloralictus versatus. 
Oxystoglossa confusa. 

Lepidoptera (2) — Papilion.: Euphoeades, Laertias. 

Lobelia cardinalis x siphilitica (4: 69). — Two visitors observed, 
August 21. 

Birds {!)— Trochil: Troehilus. 

Long-tongued Bees (1) — Bomb.: Bombus amerieanorum ^. 

Lobelia inflata. — Blooms July 7-November 19; 2 visitors ob- 
served, August 15; Mi, W. 

Short-tongued Bees (2, 5) — Halict.: Chloralictus sparsus, Oxy- 
stoglossa confusa. 

Lobelia leptostachys (4:67-8). — Blooms June 30- August 17; 
22 visitors observed, July 3-31 ; Mas, W. 

Long-tongued Bees (14) — Ap.: Apis; Bomb. (^) : Bombias 
separatus, Bombus amerieanorum; Ceratin.: Ceratina ?; Stelid.: 
Anthidium psoraleae J* $; Megachil.: Osmiini: Hoplitis 5; Mega- 
chilini : Chelostomoides J*, Megachile brevis J* $, sc, petulans J*, fq, 
Oligotropus J*; Coelioxyini: Coelioxys 8-dentata J*, rufitarsis $; 
Eucer.: Epimelissodes obliqua J*, Melissodes bimaculata J*. 

Short-tongued Bees (4) — Halict.: Agapostemon viridulus 5, 
Chloralictus pilosus $, c, n, Oxystoglossa confusa J* $, Seladonia (^. 

Diptera (1) — Bombyli.: Systoechus. 

Lepidoptera (3) — Lycaen.: Everes; Hesperi.: Limochores 
taumas, Thanaos juvenalis. 

Lobelia siphilitica (4: 68).— Blooms August 12-October 16; 10 
visitors observed, August 21-September 17 ; Ma, R. 

Long-tongued Bees (5) — Bomb.: Bombias separatus $, Bombus 
amerieanorum 2 ^j ^c, ab, consimilis ^, sc, impatiens ^, sc; 
Anthophor. : Amegilla $. 

Short-tongued Bees (3, $, n) — Halict.: Chloralictus versatus c, 
Curtisapis coriacea, at slits, Oxystoglossa confusa c. 

Lepidoptera (2) — Nymphal.: Anosia; Papilion.: Laertias. 



CHARLES ROBEIiTSON 143 



Lobelia spicata (4:67). — Blooms May 20-June 30; 11 visitors 
obsencd, ^lay 31-June 12 ; Mas, W. 

Long-tonprued Bees (4, $) — Ceratin.: Ceratina; Megachil.: 
Alcidamea simplex, Megachile brevis; Euccr.: Totralonia dilccta. 

Lepidoptera (7) — Lycacn.: Chrysophanus; Pajnlion.: Pieris, 
Pontia; Ilesperi.: Ancyloxypha, Limoohores taumas, Pholisora 
Catullus, Polites. 

Lythracr,ve 

Ammannia coccinea. — Blooms June 25-October 6; 12 species 
and 21 individuals taken, July 31-August 30; Mi, R. 

Long-tonp:ucd Bees (1: 1) — Ceratin.: Ceratina $, sc, 1. 

Short-tongued Bees (5:12) — Ilalict. ($) : Chloralictus pilosus 
sc, 2, sparsus 1, vei-satus se, 7, Oxystoglossa similis sc, 1 ; Pnnurfj.: 
Calliopsis andreniformis ^, 1. 

Diptcra (3) — Sijrph.: Mesogramma marginata 1, Syritta 1; 
Tachin.: Spallanzania 1. 

Lepidoptera (3) — Lycaen.: Everes 1; Papilion.: Eurema 1, 
Pontia 1. 

Cuphea petiolata.— Blooms July 15-October 26; 3 visitors ob- 
served, July 29-Scptember 4 ; Ma, R. 

Long-tongued Bees {2)— Bomb.: Bombus amerieanorum ^ ^, 
ab; Eu<:cr.: Melissodes bimaculata (^ $, fq. 

Short-tongued Bees {!)— Ilalict.: Oxj'stoglossa similis $, sc, n. 

Lythrum alatum (5: 179).— Blooms May 27-September 5; 55 
visitors obser\'ed, June 18-August 28; Mas, R. 

Long-tongued Bees (24) — Ap.: Apis fq; Bomb.: Bombias sep- 
aratus $ §, Bombus impatiens ^, sc, fq; Ceratin.: Ceratina 9; 
Megachil.: Osmiini: Alcidamea simplex $; Megachilini : Megachile 
brevis ^ % .sc, ab, mendica (^ $, pctulans ^, Oligotropus ^, Sayapis 
sayi (^; Coelioxjini : Coelioxys modesta $, 8-dentata cT $, fq ; EpeoL: 
Epeolus bifasciatus <^ $, Triepeolus concavus J*, concolor (^ $; 
Euccr.: Epimelissodes atripes $, obliqua cT, Florilegus cT $. Meli.s- 
sodes bimaculata (^, coloradensis <^, comptoides (^ $, sc, fq, type, 
petalostemonis $, sc, variabilis cT, Tetralonia dilccta (^ $. 

Short-tongued Bees {1)—Halict.: Agapostemon radiatus ^ $, 
fq, viridulus J* $, Chloralictus versatus $, sc, Odontalirtus 9. sc. 
Oxystoglos-sa eonfusa J*, Seladonia c?; Panurg.: Calliopsis andreni- 
formis $, sc. 

Other Hymenoptera {Z)—^p'hcc.: Priononyx atrata, Sphex 
nigricans fq, procera. 



144 FLOWERS AND INSECTS— XXVI 

Diptera (9) — Syrph.: Eristalis latifrons, Helophilus latifrons f, 
n, Tropidia mamillata f , n ; Bomhyli. : Exoprosopa emarginata, 
f asciata f q, f ascipennis, Geron rufipes, Systoechus ; Tachin. : Archy- 
tas analis. 

Lepidoptera (12) — Nymphal.: Charidryas, Vanessa cardui; 
Lycaen.: Chrysophanus ; Papilion.: Eurema, Eurymus fq, Pieris, 
Pontia fq; Hesperi.: Ancyloxypha, Hesperia, Limochores taumas, 
Pholisora catullus fq, Polites fq. 

Malvaceae 

Abutilon theophrasti (int, 6: 269-70).— Blooms June 26-Oeto- 
ber 14 ; 23 visitors observed, August 15-September 19 ; Ma, Y. 

Birds {l)—Trochil.: Trochilus. 

Long-tongued Bees (15) — Ap.: Apis; Bomh.: Bombias separatus 
^, sc, fq, Bombus amerieanorum J* ^, fq; Megachil.: Megaehile 
brevis 5; Xanthosarus $, sc ; Eucer.: Epimelissodes obliqua (^, Melis- 
sodes agilis (^, bimaeulata 5> sc, fq, boltoniae 5; comptoides $, sc, 
nivea ^, sc, petalostemonis $, simillima (^, variabilis 5? sc; Antho- 
phor.: Amegilla 2- 

Short-tongued Bees (3, $) — Halict.: Chloralictus versatus, c, n, 
Curtisapis coriacea, Seladonia. 

Diptera (1) — Syrph.: Mesogramma marginata f, n. 

Lepidoptera (3) — Papilion.: Callidryas, Pieris; Hesperi.: Pho- 
lisora catullus. 

Hibiscus lasiocarpos (6:270-1). — Blooms July 20-September 
16; 8 visitors observed, July 29-September 11; Ma, W. 

Birds {l)—Trochil.: Trochilus. 

Long-tongued Bees (6) — Bomb.: Bombias separatus 5, Bombus 
amerieanorum c? ? ^, ab; Megachil.: Megaehile brevis J*; Eucer.: 
Melissodes bimaeulata ^ $; Emphor.: Emphor J* 5> sc, ab, Meli- 
toma cf . 

Coleoptera (1) — Scardbae.: Euphoria sepulchralis f, n. 

Hibiscus militaris. — Blooms August 9-31 ; 3 visitors observed, 
August 15 ; Ma, R. 

Long-tongued Bees (3) — Bomb.: Bombus amerieanorum ^; 
Emphor. : Emphor ^ % sc, ab, Melitoma J*. 

Hibiscus trionum (int, 6:271-2). — Blooms June 20-October 
15; 5 visitors observed, August 28-September 26; Ma, Y. 

Long-tongued Bees (3) — Bomb.: Bombias auricomus $, 2, 
Bombus amerieanorum c^ ^, 3 ; Eucer.: Melissodes boltoniae ?, 1. 

Lepidoptera (2) — Papilion.: Eurymus 2, Pieris 1. 



CHARLES WBERTSOS 145 

Malva rotundifolia (int, 6:2GK-9). — Blooms April 29-Novera- 
ber 19; 41 visitoi-s observed, May 14-Oftober 9; Mi, \V. 

Lonj?-tonf?ue(] Bees (11) — Ap.: Ai)is ab; Bumb.: Boiubias auri- 
conius $. Boiubus consimilis ^, irapatiens 5, sc ; Ceratin.: Ceratina 
2, sc, f (I ; Meyachil.: Tnpetiiii: Neotrypetes tnincatiw (^ ; Osmiini : 
Alcidamea simplex $, Osmia pumila $; Nomad.: Centriaa ameri- 
eanus (^ $, fq, Holonomada affabilis $; Eucer.: Melissodes bimacu- 
lata c?. 

Short-toiiffued Bees (22) — I/alict.: Apapostemon radiatus ^ 9f 
fq, viridulus cT $. sc, fq. AuRocblora fen'ida $, Chloralictus illi- 
noensis 9. fypf, pilosus 9. sparsus (^9, fq, versatus (^ 9< so, fq, 
zephynis J*, Ciirtisai)is coriacea 9- Evylaeus pectoralis ^T 9. sc, ab, 
truncatus 9- «<'. Ilalictus lerouxii 9- sc, Odontalictus (^ 9- Oxysto- 
glossa confiisa (^ 9- ^Q- pura 9. similis 9- f^l' Seladonia 9> sc, ab; 
Prosopitl.: Prosopis pyjnnaca 9. sayi (^, ab, /i/iae cT 9- sf, n; ColUt.: 
Collctes eulopbi 9; Panurrf.: Calliopsis andreniformis ^T 9» sc, ab. 

Diptcra (5) — Syrph.: Mcsopramma marginata sf; Empid.: 
Empis distans; Conop.: Zodion fulvifrons; Mtisc: Pscudopyrellia ; 
Anthatny.: Phorbia acra. 

I>epidoptera (2) — Papxlion.: Picris, Pontia. 

Coleoptera (1) — Mnlach.: CoUops f, n. 

May 31, June 24, the first 100 individuals, represent in'^ 27 
species, are as follows : 

Long-tongued Bees (7:2;')) — Ap.: Apis 11; Ceratin.: Ceratina 
4; }fcgachil.: Neotrypetes truncatus 3, Aleidamoa simplex 1, Osmia 
pumila 1; Nomad.: Centrias amerieanus 4, Holonomada affabilis 1. 

Short-tonpued Bees (17:72) — Ilalicf.: Agapostemon radiatus 2, 
viridulus 3, Augochlora fen-ida 1. Chloralictus sparsus 2, Curti- 
sapis coriacea 1, Evylaeus pectoralis 23, Ilalictus lerouxii 1, Odon- 
talictus 1, Oxystoglossa confusa 2, pura 1, similis 5, Seladonia 9; 
Prosopid.: Prosopis pygmaea 2, sayi 10, ziziae 1; Collet.: Collet es 
eulophi 1; Panurg.: Calliopsis andreniformis 7. 

Diptcra (2:2) — Empid.: Empis distans 1; Conop.: Z«)dion ful- 
vifrons 1. 

Lepidoptera (1:1) — Papilion.: Pontia 1. 

Sida spinosa (int, 6: 269).— Blooms June 14-October 26; 8 vis- 
itors obs« rve«l. Augast 24-September 18; Mi, Y. 

Long-tongued Bees (2) — Bomb.: Bombus americanoruin (^ 5, 
f q ; Ceratin.: Ceratina 9. ^^ 

Short-tongucd Bees (1) — Ilalict.: Oxystoglossa confusa ($. 

lyopidoptera (o) — PapUion.: Eurema, Eur>mus. Pierls fq. Pon- 
tia; Ilespcri.: Hesperia. 



146 FLOWERS AND iNSECTS—XXVI 

Nymphaeaceae 

Castalia tuberosa (2: 123-5).— Blooms May 22-September 18: 
12 visitors observed, May 22-September 17 ; Mi, W. 

Short-tongued Bees (8) — Halict. (?, c) : Agapostemon radiatus 
ab, 1 dead, viridulus ab, Chloralictus nymphaearum, Curtisapis 
coriacea dead, Evylaeus nelumbonis ab, Halictus lerouxii dead, 
parallelus 1 dead; Prosopid.: Prosopis nelumbonis 5, f. 

Diptera (3) — Syr ph.: Helophilus divisus f, ab, latifrons f; 
Bomhyli.: Spamopolius, dead, n. 

Coleoptera (1) — RMpiphor.: Rhipiphorus limbatus, dead. 

Nelumbo lutea (2: 297-8).— Blooms June 23-August 31; 32 
visitors observed, July 26-August 12 ; Mi, W. 

Long-tongued Bees (6) — Ap.: Apis c, ab; Bomh. (n) : Bombias 
scutellaris ^, expl, separatus ^, expl, Bombus amerieanorum ^, 
expl, impatiens $, dead ; Ceratin. : Ceratina $, c. 

Short-tongued Bees (12) — Halict. : Agapostemon radiatus $, c, 
ab, Chloralictus nymphaearum $, c, type, pilosus $, c, ab, sparsus 
$, c, versatus ^ $, f, c, ab, Evylaeus nelumbonis ?, c, ab, type, 
Halictus lerouxii % c, parallelus $, c, ab, Odontalictus $, e, Oxy- 
stoglossa confusa ?, c, ab; Prosopid. ($, f ) : Prosopis nelumbonis, 
type, ziziae. 

Other Hymenoptera (2, expl, n)—Scoli.: Elis interrupta, Sco- 
lia bicineta. 

Diptera (8) — SyrpJi. (f ) : Mesogramma marginata, Orthoneura 
nitida, Pipiza pulehella ab, Sphaerophoria, Syritta, Syrphus 
ribesii; Muse: Pseudopyrellia, dead, n; EpJiydr.: Notiphila f, fq. 

Coleoptera (4, f) — Ceramhyc: Typoeerus badius; Chrysomel.: 
Diabrotica 12-punctata ab; Coccinell.: Hippodamea 13-punctata, 
Megilla. 

Nymphaea advena (2: 122-3).— Blooms May 19-August 20; 2 
visitors observed, August 20 ; Mi, Y. 

Short-tongued Bees (1) — Halict.: Evylaeus nelumbonis $, e. 
Diptera (1) — Syrph.: Helophilus divisus. 

Oleaceae 
Fraxinus americanus (anemophilous). — One visitor observed, 
April 19. 

Long-tongued Bees (1) — Ap.: Apis c, ab. 

Onagraceae 

Circaea lutetiana (5: 273).— Blooms June 20-July 26; 18 

species and 94 individuals, June 25-July 10 ; Mi, W. 



CHARLES ROBERTSON 147 

Long-tongued Bees (2:6) — Botnh.: Boinbiis amcricunorum ^, 
1; Ceratin.: Ccratina $, se, 5. 

Short -t on gued Bees (9:86) — Ilalict.: Augot-hlora viridula $, 
sc, 1, Chloralictus obscurus ^, so, 1, spai-siis $, 1, versatus 9, so, 30, 
Curtisapis fuscipennis $, so, 14, Evylacus pcotinatus ^, sc, 1, pec- 
toralis $, 1, 4-maculatus <^ $, sc, 22, Oxystoglossa confusa 2, ^c, 15. 

Other Hymenoptera (1:1) — Chalcid.: Smicra debilis. 

Diptcra (6:11) — Syrph.: Allograpta 1, Mesogramraa gcminata 
5, marginata 1, Baceha fuscipennis 1; Bombyli. (f, n) : Anthrax 
sinuosa 2, Arg>'ramoeba oedipus 1. 

Gaura biennis (5:273). — Blooms July 2-October 24; 7 visitors 
observed, August 23-September 10 ; Ma, W. 

Long-tongued Bees (5) — Ap.: Apis sc; Bomb.: Bombus amcri- 
canonim $, sc, ab, impatiens $, e; Mcgachil.: Megachile mendica 
$, c; Eiiccr.: Melissodes bimaculata $, sc. 

Short-tongucd Bees (1) — Ilalict.: Chloralictus versatus $, c, n. 

Diptera (1) — Syrph.: Syrphus americanus f, n. 

Ludvigia alternifolia (5: 271).— Blooms July 11-Augu.st 23; 17 
species and 40 individuals taken on August 3, 8; ^li, Y. 

Long-tongued Bees (3:4) — Bomb.: Bombus americanorum 5, 
1 ; Mcgachil: Megachile brcvis $, 1, petulans (f, 2. 

Short-tongued Bees {10:32)— Ilalict. ($) : Chloralictus pilosus 
sc, 6, pruinosus 2, sparsus c, 1, versatus sc, 13, Halictus parallelus 
sc, 1, Odontalictus sc, 4, Oxystoglossa confusa 1, pura 1, similis sc, 
1, Seladonia 2. 

Other Hymenoptera (2:2)— Philanth.: Philanthus ventilabris 
1; Crabron.: Anacrabro 1. 

Diptera (1:1) — Mycetophil.: Sciara atrata 1, n. 

Lepidoptera (1:1) — Lycaen.: Everes 1. 

Ludvigia pclycarpa (5:272). — Eighteen species and 59 indi- 
viduals, August 3-19; Mi (Pol), Y. 

Short-tongued Bees (5 : 40)— //aWc/.: Chloralictus crcssonii $, 
1, versatus $, .so, 36, zephyrus $, 1, E\Tlaeus pectoralis <^, 1, Oxy- 
stoglossa similis $, 1. 

Other Hymenoptera {6:S)—Scoli.: Elis interrupta 1; Phi- 
lanth.: Cerceris compacta 1 ; Vesp.: Polistes pallipes 1, variatus 1; 
Pompil.: Lophopompilus atrox 2, philadel[)hicus 2. 

Dil)t('ra (7:11) — Syrph.: Mesogramma marginata 4, polita 1; 
Tachin.: Archytas analis 1, Belvosia unifasciata 1, Spallanzania 1; 
Sarcophag.: Sarcophaga sinuata 2; Anthomy.: Limnophora 1. 



148 FLOWERS AND INSECTS— XXVI 

Oenothera biennis (5: 272).— Blooms July 20-October 16; 10 
visitors observed, August 13-Septeinber 2 ; Ma, Y. 

Birds (1) — Trochil.: Troehilus fq. 

Long-tongued Bees (6) — Ap.: Apis sc, fq; Bomh.: Bombus 
amerieanorum ^ ^, sc, fq; Megachil.: Megachile mendica $, c; 
Eucer.: Anthedon J* 5, sc, ab, oligolege, Epimelissodes obliqua $, 
c, Melissodes bimaculata $, c. 

Short-tongued Bees (2, 5, c) — Halict,: Agapostemon viridulus; 
Nomi.: Paranomia. 

Lepidoptera (1) — Sphing.: Deilephila. 

Oenothera fruticosa (5: 272-3).— Blooms May 24- June 29; 28 
visitors observed. May 28-June 25 ; Ma, Y. 

Long-tongued Bees (7) — Bomb.: Bombus amerieanorum $, se, 
ab; Ceratin.: Ceratina J* $, sc, fq; Megachil.: Alcidamea simplex 
$, c, Cyphopyga J* ?, sc, ab, Megachile brevis J* 5, Sayapis polli- 
earis $; Eucer.: Tetralonia dilecta % sc. 

Short-tongued Bees (9, $, c, n) — Halict.: Agapostemon viridu- 
lus ab, Chloralictus albipennis, versatus, Evylaeus pectoralis, 
Halictus lerouxii, parallelus, Odontalictus, Oxystoglossa confusa 
fq, Seladonia. 

Diptera (6, f, n) — Syr ph.: Eristalis dimidiatus, latifrons, 
Sphaerophoria, Syrphus americanus, Tropidia mamillata; Tachin.: 
Cistogaster pallasii. 

Lepidoptera (4) — Papilion.: Laertias, Pontia; Hesperi.: Limo- 
chores taumas, Polites fq, 

Coleoptera (2, f, n) — Chrysomel.: Diabrotica 12-punctata; 
Curculion.: Centrinus scutellum-album ab. 

Orchidaceae 

Cypripedium parviflorum pubescens. — Blooms May 7-30; 2 
visitors observed. May 15, 17 ; Ma, Y. 

Long-tongued Bees (2, n) — Ceratin.: Ceratina 5, 1, Zaodon- 
tomerus J*, 1. 

Habenaria leucophaea (6:53-4). — Blooms June 12-July 12; 1 
visitor observed, July 2; Ma (S), W. 

Lepidoptera (1) — Sphing.: Chaeroeampa 1. 

Liparis liliifolia. — Blooms May 17-June 20 ; 2 visitors observed, 
June 3 ; Mi, R. 

Diptera (1) — Anthomy.: Hylemyia juvenalis n. 
Hemiptera (1) — Caps.: Lopidea n. 



CHARLES ROBEIiTSON 149 

Orchis spectabilis (6:52-3). — Blooms May G-19; 2 visitors 
observca, May l.J; Ma, II. 

Lonj,'-tonj,'ued Bees (2) — liumh.: Bonibias st-paratus $, Bombus 
americauorum $. 

Spiranthes gracilis (6: 51-2).— Blooms August 27-October 7; 
2 visitors observed, September 3, 4; Ma, W. 

Long-tongued Bees (1) — Bomb.: Bombus anicricanoruin <^. 
Short-tongued Bees (1)— Pa/iurr;.; Calliopsis andrenilormis $. 

OUOILVNCIIAC'KAI: 

Orobanche uniflora. — Blooms April 27-May 28; 1 visitor ob- 
served. May IG; Ma, W. 

Long-tongued Bees (1) — Bomb.: Bombus americanorum $. 

OXALIDACKAK 

Oxalis corniculata. — Blooms April 14-July 7; 18 visitors ob- 
served, ^lay 22-June 10; Mi, Y. 

Long-tongued Bees (4)— Ap..- Apis; Ceratin.: Ceratina J* $; 
Megachil.: Alcidamea simplex (^, Osmia pumila $, sc. 

Short-tongued Bees (9, $, sc) — Ifalict.: Chloralietus albiprnnis, 
pilosus fq, pruinosus fq, tegularis, vei-satus, Evylacus foxii, pec- 
toral is, Odontal ictus, Seladonia. 

Diptera (1) — Syr ph.: ]\Iesogramma marginata sf. 

Lepidoptera (4) — Nymphal.: Phyciodes Iq ; Painlion.: Pieris, 
Pontia; Ilespcri.: Pholisora catullus. 

Oxalis stricta. — Blooms June l-November 7; 12 visitors ob- 
served, June 18, August 4, 22, October 9; Mi, Y. 

Long-tongued Bees (2) — Bomb.: Bombus americanorum 5; 
Euccr.: ^lelissodos bimaculata $. 

Short-tongued Bees (2, $, sc) — Ilalicf.: (Jliloralictus versatus; 
Panurg.: Calliopsis andreniformis. 

Diptera (5) — Syrph. (f, n) : Mesogramma marginata, Syritta; 
Empid.: Parempis; Bombyli.: Spamopolius, Thlipsogastcr. 

Lepidoptera (3) — Paptlion.: Pieris; Hesperi.: Pholisora catul- 
lus, hayhurstii. 

Oxalis violacea (6: 272-3).— Blooms April f.-Jun»' 10; 31 vis- 
itors obsened, April 23-May 17; Mi (Ma), R. 

Long-tongued Bees (12) — Ap.: Apis; Bomb.: Bombia.s auri- 
comus $, Bombus americanorum $; Ceratin.: Ceratina cT $. ^H. 
Zaodontomerus ^f, fq; Mrgachil.: Monilosmia (^, Osmia pumila 9. 
fq; Nomad.: Centrias americanus (j*, Ilolonomada supcrba cT $» fQ» 



150 FLOWERS AND INSECTS— XXVI 

Nomada cressonii (^, parva J* ?, fq, type; Eucer.: Tetralonia dilecta 

^ ?, fq. 

Short-tongued Bees (14) — Halict. ($) : Agapostemon radiatus, 
viridulus, Chloralictus albipennis, pilosus, sc, ab, versatus, Curti- 
sapis forbesii, Evylaeus peetoralis, Halietus lerouxii, sc, ab, Odon- 
talictus sc, Oxystoglossa confusa ab, Seladonia sc, ab; Andren.: 
lomelissa 5, Opandrena cressonii $, personata (^ $. 

Diptera (1) — Bomhyli.: Bombylius pulchellus. 

Lepidoptera (3) — Nymphal.: Phyciodes; Papilion.: Eurymus; 
Hespen.: Thanaos brizo. 

Coleoptera (1) — Buprest.: Acmaeodera culta f, n. 

Papaveraceae 
./'"Sanguinaria canadensis (5:175-6). — Blooms March 16-April 
30 ; 11 visitors observed, April 11-14 ; Mi, W. 

Long-tongued Bees (3) — Ap.: Apis c, ab; Ceratin.: Zaodon- 
tomerus ^^ ; Megachil. : Ceratosmia <^. 

Short-tongued Bees (4) — Halict. ($) : Chloralictus sparsus, 
zephyrus, Evylaeus f oxii ; Andren. : Andrena carlini J* % f q. 

Diptera (3) — Syrph.: Syrphus americanus f ; Bomhyli.: Bom- 
bylius major; Tachin.: Gonia capitata. 

Coleoptera (1) — Oedemer.: Asclera ruficoUis f, fq. 

Passifloraceae 

Passiflora lutea. — Blooms July 5-September 26; 6 visitors ob- 
served, July 8-September 9 ; Mi, W. 

Short-tongued Bees (4) — Halict. ($, c, n) : Chloralictus pru- 
inosus 1, versatus 2; Collet.: CoUetes latitarsis (^ % ab; Panurg.: 
Anthemurgus passiflorae J* $, sc, ab, type, oligolege. 

Other Hymenoptera (2) — Eumen.: Eumenes fraternus 1; 
Crahron.: Anacrabro 1. 

Pedaliaceae 

Martynia louisiana (5: 65). — Blooms July 12-September 14; 1 
visitor observed, September 3 ; Ma, R. 

Long-tongued Bees (1) — Bomb.: Bombus americanorum ^. 

Phrymaceae 
Phryma leptostachya (5: 68). — Blooms July 3-September 3; 2 
visitors observed, July 27, August 8 ; Mi, R. 

Long-tongued Bees (1) — Ceratin.: Ceratina $. 
Short-tongued Bees (1) — Halict.: Oxystoglossa confusa J*. 

Phytolaccaceae 
Phytolacca decandra (5:68-9). — Blooms June 14-October 15; 
12 visitors observed, July 17, 23 ; Mis, W. 



CHARLES ROBERTSON 151 

Long-tongued Bees (1) — Ap.: Apis. 

Short-tongued Bees (5) — Ilalict.: Chloralictus sparsus <^ $, sc, 
ab, versatus $, sc, ab, zephyrus $, Odontalietus ^T, Seladonia (^ 9- 

Other Hymenoptera (2) — Vesp.: Polistes pallipes; PomiAl.: 
Priocnemoides fulviconiis. 

Diptera (4) — Si/rph.: Mosograinnia gcininata, Syritta ab; 
Empid.: Parcmpis; Tachin.: Archytas analis. 

PiJiNTAoiNACtLVE (ancmopliilous) 
Plantago major. — Three visitors observed, June 23-July 17. 
Long-tongued Bees (1) — Bomb.: Bombus americaiiomin 5, c, 1. 
Short-tongued Bees (2, $ e) — Ilnlict.: Chloralictus versatus 11, 
Oxystoglossa similis 1. 

Pul.KMO.NIACKAi; 

Phlox divaricata (8: 143, 13: 578).— Blooms April 3-,June 2; 
25 visitors observed, April 25-May 23; Ma, R. 

Long-tongued Bees {S)—Bamb. ($) : Bombias separatus, Bom- 
bus americanorum ab, eonsimilis, impatiens, ridingsii, Psithyrus 
variabilis; Mcgachil.: Osmia cordata cf ; Euccr.: Tctralonia dilecta 
cT ?. ab. 

Diptera (1) — Bombyli.: Bombylius atrieeps. 

Lepidoptera (IG) — Xtjmphal: Anosia; Pai/ilion.: Euphoeades, 
Eur}'mus, Heraclides, Iphidides, Ja.soniades, Lacrtias, Papilio; 
Jlesperi.: Atrj'tone zabulon ab, Eparg>'rcus, Limochores taumas, 
Thanaos icelus, Thon.'bes bathyllus; Sphing.: Deilephila, Hemaris 
thysbe; Noctu.: Plusia simple.x. 

April 29, May 6, 11, 18, 20, 1909, the following 9 .species and 62 
indiN-iduals were taken on the flowers: 

Long-tongued Bees (6: 56) — Bomb.: Bombias separatus 1, Bom- 
bus americanorum 7, eonsimilis 1, ridingsii 1, Psithyrus variabilis 
3; Eucer.: Tetralonia dilecta 43. 

Lepidoptera (3:6) — Papilion.: Eurymus 1, Ii>hielides 1; 
Ilcspcri.: Atrytone zabulon 4. 

Phlox glaberrima (8: 142).— Blooms May 2K-Auu'ust »i ; 8 vis- 
itors obser\cd, May 28-,July IH; Ma, R. 

Lepidoptera (7) — \i/mplujl.: Anosia; Papilion.: Eurj'mus, 
Heraclides, Lacrtias, Pai)ilio; Ilcsperi.: Polites; Ctenuch.: Scepsis. 

Diptera (1) — Syr ph.: Syrphus americanus f, n. 

Phlox pilosa (8: 142-3).— Blooms April 27-June 29; 20 vi.n- 
itors obsencd. May 8-June 8; Ma, R. 

Long-tongued Bees (7) — Bomb. ($) : Bombias auricomus fq, 
separatus, Bombus americanorum, impatiens; Somad.: Ilolonomada 



152 FLOWERS AND INSECTS— XXVI 

superba $; Eucer.: Tetralonia dilecta d" $, ab; Anthophor.: An- 
thophora J. 

Diptera (1) — Bomhyli.: Bombylius atriceps. 

Lepidoptera (12)— Nymphal: Phyciodes, Vanessa huntera; 
Lycaen.: Chrysophanus ; Papilion.: Euphoeades, Eurymus ab, 
Jasoniades, Papilio; Hesperi.: Epargyreus, Polites fq, Thorybes 
bathyllus fq, pylades; Noctu.: Plusia simplex fq. 

May 16, 1911, 6 species and 48 individuals were taken on the 
flowers, as follows: 

Long-tongued Bees {2:21)— Bomb.: Bombias auricomus 1; 
Eucer.: Tetralonia dilecta 20. 

Lepidoptera {A::21)—Pap%lion.: Eurymus 10; Hesperi.: Epar- 
gyreus 2, Polites 8, Thorybes bathyllus 7. 

Polemonium reptans (13: 578-9).— Blooms April 12-May 24; 
50 visitors observed, April 14-May 20 ; Ma, R. 

Long-tongued Bees (21) — Ap.: Apis sc, ab; Bomb. (?) : Bom- 
bias auricomus, separatus fq, Bombus americanorum ab, consimilis, 
impatiens fq, ridingsii, Psithyrus variabilis; Ceratin.: Ceratina J* 
5, ab, Zaodontomerus J* ; Megachil. : Alcidamea simplex J*, Ceratos- 
mia cf $, Diceratosmia $, sc, fq, Osmia atriventris J* $, pumila J" 
5, sc, ab; Nomad.: Gnathias ovatus $, xanthoparius J*, fq, Holo- 
nomada affabilis c^; Eucer.: Tetralonia belfragei J* $, sc, ab, dilecta 
^, f q ; Anthophor. : Anthophora J*. 

Short-tongued Bees (17) — Halict. ($) : Agapostemon radiatus, 
Chloralictus coreopsis sc, obscurus, pilosus sc, versatus, Curtisapis 
coriacea sc, Halictus lerouxii sc, Oxystoglossa confusa sc, ab, pura 
sc, fq, similis; Andren.: Andrena carlini $, geranii (^, fq, nasonii 
5, c, pruni $, sayi ?, sc, Ptilandrena g. maculati (^, polemonii ^ $, 
sc, ab, type, oligolege. 

Diptera (5) — Syr ph.: Mesogramma marginata f, n, Pipiza 
femoralis f, n, Rhingia sf ; Empid.: Pachymeria; Bombyli.: Bom- 
bylius major. 

Lepidoptera (5, n) — Papilion.: Eurymus fq; Hesperi.: Thanaos 
brizo, juvenalis fq; Sphing.: Hemaris thysbe; Noctu.: Plusia sim- 
plex fq. 

Coleoptera (2, f, n) — Anthic: Corphyra terminalis; Coccinell.: 
Megilla. 

April 14, 21, 28, 1910, the following 30 species and 133 individ- 
uals were taken on the flowers : 

Long-tongued Bees (15:90) — Ap.: Apis 26; Bomb.: Bombias 
auricomus 3, separatus 6, Bombus americanorum 5, impatiens 5, 
ridingsii 1, Psithyrus variabilis 1; Ceratin.: Ceratina 3, Zaodon- 



CHARLES ROBERTSON 153 

toracnis 1; Meyachil.: Ceiatosraia 1, Diceratosinia 7, Usmia atri- 
ventris 3, pumila 6; Eucer.: Tetralonia belfragci 17, dilecta 5. 

Short -tongucd Bees (9:21) — JIalict.: Agapostt'inon radiatus 1, 
Chloralictus coreopsis 1, pilosus 3, versatus 1, Cunisapis coriacea 
2, Oxystoglossa puia G, simllis 2; Atulnn.: Andnna pniui 1, Pti- 
landrena polomonii 4. 

Diptera (2:2) — Syrph.: Pipiza leinoralis 1; Jlinnftj/li.: H(»m 
hyliiis major 1. 

Lepidoptcra (4:20) — Pajnlion.: Kurymus 5; Ihsprri.: Tlianaos 
juvcnalis 6; Sphing.: Hemaris tliysbe 1; Noctu.: Plusia simplex 8. 

POIACAI^CKAE 

Polygala sanguinea. — Blooms June 8-AuKUst 27 ; 4 visitors 
observed, Auj^ust 2(), 27 ; ^las, R. 

Long-tongued Bees (2, J*) — Epeol: Tricjx'olus cressonii; 
Eucer.: Melissodes nivea fq. 

Short -tongued Bees (1) — Panurg.: Calliopsis andreniformis cT 
2, so, fq. 

Di])tera (1) — Bomhyli.: Systoeehus. 

POLYGONACEAE 

Polygonum acre. — Blooms June 24-Oetobor 2G ; 10 visitors 
observed, August 2()-Septtinb('r 16; Mis, W. 

Long-tongued Bees (1) — Ap.: Api.s. 

Short -tongued Bees (1) — Ilnlict.: Augochlora viridula ?. 

Other Ilymenoptera (5) — Vcsp.: Polistes pallipes; Euinm.: 
Aneistrocerus capra, Eumenes fratemus; Crahron.: Xcstocrabro 
6-maeulatus; Nysson.: Pseudoplisus divisus. 

Diptera (3) — Syrph.: Platychirus quadratus. Syriftii: Tachin.: 
Archytas aterrima fq. 

Polygonum amphibium. — Blooms August 2-October .'JO; 1 vis- 
itor observed. Auirust ;50; Mis, R. 

Other liymoiio|)tera — Vesp.: Vespula germanica. 

Polygonum hydropiper. — Blooms July 26-Oetober 6; 3 visitors 
obser\ed, September KJ; Mis, \V. 

Short-tongued Bees — JIalict.: Ilalietus lerouxii 9- 
Other Hymenoptera — Vesp.: Polistes variatus. 
Diptera — Tachin.: Taohina mella. 

Polygonum hydropipcroidcs (9: 72-3).— Blooms July 11-Sop- 
tember 20; 73 visitors observed, August 30, September 20; Mi.s, W. 

Long-tongued Bees (4)—Ap.: Apis; Ceratin.: Ceratina $; 
Mcgachii: Megachile brevis (^, mcndica $. 



154 FLOWEBS AND INSECTS— XXVI 

Short-tongned Bees (10) — Halict.: Agapostemon radiatus ^ $, 
Curtisapis coriacea J*, fq, Halictus lerouxii 5, Seladonia $; 
Prosopid.: Prosopis pygmaea J* ; Collet.: Colletes amerieanus <^ $, 
fq, armatus J*, ab, eulophi ^, latitarsis 5; Andren.: Pterandrena 
solidaginis $. 

Other Hymenoptera (39) — Sphec: Ammobia ichneumonea, 
Isodontia apicalis, Priononyx atrata, thomae, Seeliphron; Scoli.: 
Elis 5-cincta; PMlanth.: Cerceris fumipennis, kennicottii, Eucer- 
ceris, Philanthus punctatus, ventilabris; Vesp.: Polistes pallipes, 
variatus; Eumen.: Ancistrocerus eapra, Leionotus arvensis, dor- 
salis; Crahron.: Anaerabro, Synothyreopus, Xestocrabro texanus, 
trif asciatus ; Oxyhel.: Notoglossa amerieana, Oxybelus 4-notatus; 
Larr.: Astatus unieolor, Larropsis fq, Tachytes aurulentus; 
Nysson.: Pseudoplisus phaleratus; Pompil.: Batizonus, Ceropales 
f raterna, Episyron, Lophopompilus philadelphicus, Poecilopompilus 
interruptus, Priocnemoides fulvicomis; TipJii.: Tiphia clypeata; 
Mutill.: Sphaerophthalma ; Chrysid.: Chrysis texana, Hedyelirum 
violaceum, wiltii, Holopyga, Tetrachrysis nitidula. 

Diptera (16) — Syrph.: Eristalis bastardi, flavipes, Paragus 
tibialis, Syritta, Tropidia quadrata fq; Bombyli.: Systoechus; 
Conop.: Conops brachyrrhynchus ; Tachin.: Archytas analis, Chae- 
togaedia analis ; Sarcophag. : Helicobia lielieis, 4-setosa, Sareophaga 
hunteri; Muse: Compsomyia, Phormia regina, Pseudopyrellia ; 
Anthomy.: Coenosia antiea. 

Coleoptera (4) — Chrysomel.: Disonycha; Coccinell.: Coccinella 
9-notata ; Curculion. : Listronotus ; Lampyr. : Chauliognathus penn- 
sylvaniciis. 

Polygonum lapathifolium. — Blooms June 22-September 19 ; 18 
species and 28 individuals observed, August 22, 1910 ; Mis, "W. 

Long-tongued Bees (1:1) — Bomb.: Psithyrus variabilis J*, 1. 

Short-tongued Bees (3:3, ^)— Halict.: Augoehlora fervida 1, 
Chloralictus pilosus 1, Halictus parallelus sc, 1. 

Other Hymenoptera (9:16) — Scoli: Elis interrupta 1, 5-cincta 
5, Scolia bieincta 1 ; Philanth. : Eucerceris 3, Philanthus punctatus 2, 
ventilabris 1 ; Vesp. : Polistes variatus 1 ; Larr. : Astatus unieolor 1 ; 
Chrysid. : Hedychrum wiltii 1. 

Diptera (3:3) — Tachin.: Gymnosoma 1, Trichophora 1; 
Anthomy.: Phorbia platura 1. 

Lepidoptera (1:1) — Nymphal.: Phyciodes 1. 

Hemiptera (1:4) — Lygae.: Lygaeus 4. 

Polygonum pennsylvanicum (9:72). — Blooms June 20-Octo- 
ber 26 ; 87 visitors observed, August 8-September 22 ; Mis, W. 



CHARLES ROBERTSON 155 

Long-tongued Bees (10) — Ap.: Apis sc, ab; Boinb.: Bombias 
separatus (^, Bombus amerieanorum ^T 5. ab, impatiens c? 5, ab; 
Megachil.: Mcgachile brevis cT ?. i)etulans (^; Kpcol: Epeolus pusil- 
lus c^, Triepeolus donatus J"; Kuar.: Melissodes autumnalis (^, 
biniaeulata $. 

Short-tongued Bees (11) — II alii t.: Agapasteraon radiatus (^, 
Augoc'hlora viridula $, Chloralictus pilosus $, sparsus J, versatus 
2, Ilalit'tus ])arallelus (^ ^, Oxystoglossa confusa 9» i^eladonia 9 J 
Amlrcn.: Pterandrena asteris (^, solidaginis $; Vunurij.: Calliopsis 
audreiiifonnis (^ $, fq. 

Other Hymenoptera (29) — Sphcc: Chlorion, Priononyx at rata, 
Sphex nigricans; Bemhic: Bicyrtes ventralis; Scoli.: Elis 5-cineta 
fq, Scolia bieincta ; Philanth.: Cerceris elypeata, fulvipes, Eueer- 
ceris; Vesp.: Polistes annularis, pallipes, rubiginosus, variatus, 
Vespula cuneata fq, germaniea ab; Euyncn.: Ancistroeerus campes- 
tris, capra fq, tigris fq; Crahron.: Solenius, Xestoorabro 6-macu- 
latus; Larr.: Larropsis, Tacln-tes aurulentus, elongatus; /*om//i7.; 
Anoplius illinoensis, Lophopompilus jjhiladelphicus, Planiceps 
niger, Pompiloides americanus, Priocnemoides fulvicornis; Ichneu- 
mon.: Ceratosoma. 

Diptera (28) — Syrph..: Eristalis aeneus, tenax, transversus, 
Mesograrama marginata, polita, Milesia, Sphacrophoria, Syritta, 
Syrphus americanus fq, tonus, Tropidia quadrata; Bombyli.: 
Spamopolius; Tachin.: Archytas analis, aterrima ab, Belvosia uni- 
fasciata, Chaetogaedia analis, Cistogaster pallasii, Linnaemyia, 
ParadidjTna, Senotainia rubriventris, Siphoplagia anomala, Spal- 
lanzania; Sarcophag.: Helicobia 4-setosa, Sarcoi)haga cimbicis; 
Muse: Compsomyia, Oraphomyia, Phormia regina, Pseudopyrellia. 

Lepidoptera (8) — Nymphal.: Vanessa atalanta; Lycacn.: Chry- 
sophanus; Papilion.: Eurj'mus, Pieris, Pontia; Ilcaperi.: Limo- 
chores taumas; Ctenuch.: Scepsis; Noctii.: Ileliothis armiger. 

Coleoptera (1) — Lampyr.: Chauliognathus pcnnsylvanicus. 

August 29, 1910, the following 11 species and 22 individuals 
were taken on the flowers: 

Long-tongued Bees (3:10) — Ap.: Apis 6: Mtnaclxil.: Megachile 
brevis 3, petulans 1. 

Short-tongued Bees {\:2)—]Ialict.: Ilalictus parallelus 2. 

Other Hymenoptera (4:7) — Bemhic: Bicyrtes ventralis 1; 
Scoli.: Elis 5-cincta 4; Philanth.: Eucerceris 1; Ichneumon.: Cera- 
tosoma 1. 

Diptera (3:^)— Syrph.: .Sphaerophoria 1; Tachin.: SenoUinia 
rubriventris 1, Spallanzania 1. 



156 FLOWERS AND INSECTS— XXVI 

Polygonum persicaria (int). — Blooms May 10-October 26; 13 
visitors observed, August 4-September 15 ; Mis, W. 

Long-tongued Bees (1) — Bomb.: Bombus impatiens J* ^. 

Short-tongued Bees (4) — Halict.: Chloralictus sparsus J* $, so, 
fq, versatus $, fq, zephyrus $, Halictus lerouxii ^. 

Other Hymenoptera (4) — Philanth.: Cerceris finitima; Vesp.: 
Polistes annularis; Crdbron.: Solenius; Oxyhel.: Notoglossa 
frontalis. 

Diptera (3) — Syrph.: Syritta ab; Bombyli.: Anthrax alternata 
f ; Anthomy.: Phorbia acra. 

Lepidoptera (1) — Papilion.: Pontia. 

Polygonum scandens. — ^Blooms July 10-Oetober 1 ; 64 species 
and 395 individuals, August 22-September 15; Mis, W. 

Long-tongued Bees (2:5) — Ceratin.: Ceratina $, 1; Nomad.: 
Nomada vieina J*, 4. 

Short-tongued Bees (10:169) — Halict.: Chloralictus sparsus (^, 
144, versatus J* $, 3, zephyrus J*, 9 ; Sphecodini : Maehaeris stygia 
J*, 3; Prosopid.: Prosopis pygmaea J*, 1, saniculae J*, 1, ziziae $, 1; 
Collet. : Colletes americanus J*, 1 ; Andren. : Pterandrena solidaginis 
$, 1 ; Panurg. : Pseudopanurgus compositarum (^ 5, 5. 

Other Hymenoptera (22: 42) — Sphec: Sphex gracilis 2, vul- 
garis 1; Philanth.: Cerceris finitima 1, fumipennis 1, Philanthus 
punctatus 1 ; Vesp. : Vespula germanica 1 ; Eumen. : Ancistrocerus 
tigris 2, Eumenes fraternus 1, Leionotus perennis 1, scrophulariae 
3; Crabron.: Anacrabro 1, Lindenius errans 2, Rhopalum scutel- 
latum 1; Oxyhel.: Notoglossa americana 2, frontalis 4; Larr.: As- 
tatus bicolor 1, Larropsis 3; Pompil.: Lophopompilus atrox 1; 
Chrysid.: Hedychrum violaceum 2; Chalcid.: Leucospis 1, Peri- 
lampus cyaneus 2, platygaster 8. 

Diptera (25:74) — Mycetophil.: Seiara atrata 19; Syrph.: Mi- 
lesia 3, Syritta 2; Tachin.: Actia 2, Archytas analis 1, aterrima 3, 
Cyphocera 4, Exorista confinis 1, Hypostena dunningii 1, Lin- 
naemyia 1, Pachyophthalmus signatus 1, Paradidyma 1, Senotainia 
trilineata 5, Siphoplagia flaccidirostris 1, Sturmia phyciodis 1, 
Trichopoda pennipes 7, Trichophora 1, Xanthomelana 2; Sarco- 
phag.: Helicobia helicis 5, Sarcophaga assidua 5, cimbicis 3; Muse: 
Lucilia caesar 1, Musca 1, Pseudopyrellia 2; Ephydr.: Ochthera, 
pred, n, 1. 

Lepidoptera (4: 4) — Nymphal.: Vanessa atalanta 1; Lycaen.: 
Everes 1 ; Papilion. : Pieris 1 ; Hesperi. : Limochores taumas 1. 

Coleoptera (1: 1) — Lampyr.: Chauliognathus pennsylvanicus 1. 



CHARLES ROBERTSON ir,7 

PONTKDEKIAC'E-\E. 

Pontederia cordata. — Blooms July 1-Septembor 15; 2 visitors 
observed, August 8, September If); Ma (Mas), R. 
Long-ton«?ue(l Bees (1) — Euctr.: Klorilegus (/. 
Lepidoptera (1) — PaiAUon.: Kurymus. 

PORTII^CAIEAK. 

Claytonia virginica (2:177-8). — Blooms Mareh IG-Mny 24; 
103 visitors observed, April 8-May 11 ; Mi, W. 

Long-tongued Bees (21) — Ap.: Apisse, ab; liomb. ($) : Bombias 
aurieomus, Bombus amerieanorum, consimilis, impatiens; Ccratin.: 
Ceratina cf $, Zaodontomerus <^; Megachil.: Ccratosmia <^ $, fq, 
Osmia atriventris $, pumila cf $; Nomad.: Onatbias cuneatus (^, 
ovatus $, fq, Heminomada $, Ilolonomada affabilis 9. Nomada eres- 
sonii (^ $, illinoensis (^, sayi cT ?• Bhor $, Xantbidium luteoloide« 
d* 9' ^ypf' Eucer.: Tetralonia belfragei (^ $, dileeta 2- 

Short-tongued Bees {'M)—IIalut. ($) : Agapostemon radiatus 
sc, splendens, Augoelilora viridula, Chloralietus cressonii, illino- 
ensis, pilosus, sparsus, versatus se, fq, zephyrus, Curtisapis eoriaeea 
sc, E\'j'laeus areuatus, foxii, peetoralis, truncatus, Ilalietus lerouxii 
sc, ab, Odontalietus. Oxystoglossa confusa fq, type, similis, Sela- 
donia sc, ab; Sphecodini : Spbeeodes an'cnsis; Collet.: Colletes inac- 
qualis (^ $; Andrcn.: Andrena arabis $. carlini (^ 9, fq, dun- 
ningi $, erj-throgastra $, erj-thronii $. mandibularis $ nasonii 
2, pmni $, sayi (^ $, Opandrena cressonii (^ $, sc, fq, miserabilis 
<^ $, sc, fq, personata cf, f(i, Ptilandrena erigeniae cT 9. »<•> a^. 
oligolege, Trachandrena claj-toniae (^ $, sc, fq, iypf, forbesii $, sc, 
fq, rugosa (^. 

Diptera (35)— %rpH.; AUograpta, Eristalis dimidiatus, lati- 
frons, Helopbilus similis, Melanostoma obscurum. Mesogramma 
geminata. marginata, Paragus bicolor fq, Rbinu'ia, Spliaeroi)boria, 
Syritta, Syrphus americanus, areuatus, ribesii, tonus; Empid.: 
Empis humilis, nuda, otiosa; Bomhyli.: Bombylius major f q ; 
Conop.: Myopa vesiculosa; Sarcophag.: Callipbora erythroeepbala, 
Cynomyia, Helieobia belicis, 4-setosa, Sarcopbaga sinuata; Muse: 
Lncilia sylvarum. Phormia regina. Pseudopyrellia ; Anthomy.: 
Cocnosia antica, Limnophora, Pborbia acra, platura; Scatophag.: 
Scatopbaga; Seps.: Procbyliza, Sepsis. 

Lepidoptera (9)—Stfmpkal.: Phyciodes, Vaneww atalanta; 
Lycarn.: Everes ; Pnpilion.: Eurymus. Ipbiclides. I*ieris, Pontin; 
Hesperi.: Tbanaos icelus, juvenalis. 

Coleoptera (1) — Coccinell.: Megilla f, n. 



158 FLOWERS AND INSECTS— XXVI • 

May 5, 6, 9, 10, 1916, the first 100 individuals, representing 27 
species, taken on the flowers are as follows : 

Long-tongued Bees (4: 10) — Ap.: Apis 4; Bomb.: Bombus con- 
similis 1 ; Megachil. : Osmia pumila 2 ; Nomad. : Gnathias ovatus 3. 

Short-tongued Bees (15: 81) — Halict.: Chloralictus pilosus 5, 
sparsus 3, versatus 5, zephyrus 2, Evylaeus foxii 1, truncatus 1, 
Odontalictus 5; Andren.: Andrena arabis 1, nasonii 3, Opandrena 
cressonii 2, miserabilis 3, personata 5, Ptilandrena erigeniae 39; 
Traehandrena elaytoniae 2, forbesii 4. 

Diptera (8: 9) — Syrph.: Mesogramma geminata 1; Conop.: 
Myopa vesiculosa 1; Sarcophag.: Helicobia helicis 1, Sarcophaga 
sinuata 1; Muse: Lucilia sylvarum 2; Anthomy.: Limnophora 1, 
Phorbia acra 1, platura 1. 

Portulaca oleracea (int). — Blooms June 12-October 3; 3 vis- 
itors observed, August 11 ; Mi, Y. 

Short-tongued Bees (1) — Panurg.: Calliopsis andreniformis $. 
Diptera {!)— Syrph.: Syritta. 
Coleoptera (1) — Malacli.: Collops. 

Primulaceae 

Dodecatheon meadia (8: 104^6).— Blooms April 23-May 30; 9 
species and 38 individuals observed, May 2-23 ; Ma, W. 

Long-tongued Bees (6:35) — Bomb. (?) : Bombias auricomus 
4, separatus 4, Bombus americanorum 21, impatiens 2; Eucer.: 
Tetralonia dilecta (^, 3; Anthophor.: Anthophora $, sc, 1. 

Short-tongued Bees (2:2, $, c, n) — Halict.: Augochlora viri- 
dula 1, Oxystoglossa confusa 1. 

Lepidoptera (1) — Papilion.: Eurymus 1. 

Samolus floribundus. — Blooms June 15-Oetober 8; 1 visitor 
observed, September 9 ; Mi, W. 

Diptera (1) — Empid.: Parempis 1. 

Steironema ciliatum (8:106-8). — Blooms June 11-August 6; 
2 visitors observed, July 1, 16, 18 ; Mi, Y. 

Short-tongued Bees (2: 8) — Halict.: Chloralictus versatus $, cf, 
1; Macropid.: Macropis (^ $, cf, 7. 

Steironema lanceolatum (6:47). — Blooms June 10-July 15; 1 
visitor observed, June 12^uly 1 ; Mi, Y. 

Short-tongued Bees (1) — Macropid.: Macropis steironematis ^ 
2, cf, ab, type. 

Steironema quadriflorum (6:48). — Blooms June 4^August 23; 
2 visitors observed, July 6, 10 ; Mi, Y. 



^ CHARLES ROBERTSON 159 

Short-tongued Bees (2, $, Q)^If»h', f : Chloralietus vei-satus; 
Macropid.: Macropis, ab. 

R A N U X C U LA L tlAE 

Actea alba (10 : 229).— Blooms May 3-23; 3 visitors observed, 
May 8, I) ; Mi, W. 

Short-tongued Bees (3, $) — Ihilkt.: Chloralietus zephyrus 
c, Evylaeus peetoralis e, ab, Oxystoglossa confusa f. 

Anemonella thalictroides.— Blooms Ajtril 2-M;iy 22; 21 visitors 
obstTved, April 2-2S ; Mi. W. 

Long-tongued Bees (5) — Ap.: Apis; Ceratin.: Ceratina (^ % 
in cop; Mtgachil.: Dieeratosmia 9. «t'. Osmia pumila $. c; Nomad.: 
Gnathias ovatus $. 

Short-tongued Bees (11) — Halict. ($) : (.'hloralictus sparsus sf, 
vcrsatus sf, fq, Curtisapis coriacea, Evj'laeus peetoralis, Halictus 
lerouxii, Oxystoglossa confusa sf, Seladonia sf, f q ; Collet.: Colletes 
inac(jualis <^; Andrcn.: Andrena carlini 9- Opandrena cressonii $, 
Traehandrena claytoniae J'. 

Diptera (4) — Syrph.: Bracliy palpus frontosus, Eristalis dimi- 
diatus, Sphaerophoria f ; Bomhyli.: Bombylius major U\. 

Coleoptera (1) — NiiiduL: Cercus f(j. 

Aquilegia canadensis. — Blooms April 30-July 5 ; 1 visitor 
observed. May 12; Ma (0), R. 
Birds {'[)—Trochil.: Trochilus, 

Clematis pitcheri (7: 105).— Blooms June 3-July 31 ; 4 visitors 
observed, June 22-July 7; Ma, R. 

Long-tongued Bees (3) — Bomh.: Bombias auricomus $, sc, 
Bombus amerieanorum $ ^, sc, consimilis $. 

Diptera (1) — Syrph.: Volucella vesiculosa. 

Clematis virginiana (7:103-5). — Blooms June 23-August 16; 
60 visitors ob.served, July 21-30; Pol (^lis), W. 

On staminate flowers: — 

Long-tongued Bees (2) — Ap.: Apis; Bomb.: Bombus impatiens 
5, 8C. 

Short-tongued Bees (9) — Halict.: Agapostemon radiatus ^, 
Chloralictus illinoensis (^, fq, sparsus cT 9- sc, ab, versatus ^T ?. sc, 
zephyrus <^ $, .sc, fq, Halictus lerouxii (^; Sphecodini : Sphecodes 
anensis (^ $, fq, clematidis $, type; Prosoind.: Pro.sopis ziziae 

Other Ilymenoptera (10) — Sphec: Ammoi)ia ichneumonea, 
Isodontia apicalis, Sceliphron; Scoli.: Scolia bicincta ; Eumcn.: 



160 FLOWERS AND INSECTS— XXVI 

Ancistrocerus tigris, Leionotus f oraminatus ; Crahron.: Lindenius 
errans, Solenius; Oxyhel.: Oxybelus 4-notatus; Nysson.: Nysson 
plagiatus. 

Diptera (37) — Stratiomy.: Stratiomyia unilimbata; Syrph.: 
AUograpta, Eristalis transversus, Mesogramma marginata, Platy- 
chirus quadratus, Sphaerophoria, Syritta ab; Conop.: Oncomyia; 
Tachin.: Archytas analis, aterrima, Belvosia unifasciata, Linn- 
aemyia, Ennyomma globosa, Pachyophthalmus signatus fq, Phor- 
antha purpurascens, Senotainia trilineata ab, Siphona, Sturmia 
phyciodis; Sarcophag.: Calliphora erythrocepliala, Helicobia he- 
licis; Muse: Compsomyia ab, Graphomyia, Lucilia sericata, Musca 
ab, Protocalliphora, Pseudopyrellia ; Anthomy.: Calythea, Homal- 
omyia canicularis, prostrata, Limnophora, Phorbia acra f q, platura ; 
Agromyz.: Lobioptera; Seps.: Nemopoda, Piophila, Prochyliza, 



^i 



Lepidoptera (1) — Lycaen.: Cyaniris. 
Hemiptera (1) — Caps.: Lopidea. 

Delphinium tricorne (8: 120-2).— Blooms April 23-June 7; 21 
visitors observed, May 4-15. 

Birds (1) — Trochil.: Trochilus. 

Long-tongued Bees (9) — Bomb. ($) : Bombias auricomus ab, 
separatus, Bombus americanorum ab, consimilis, impatiens; Cera- 
tin. : Ceratina $, n ; Eucer. : Tetralonia dilecta <^ $, sc, ab, in cop ; 
Anthophor.: Anthemoessa J*, Anthophora $, sc. 

Sliort-tongued Bees (2, 5, c, n) — Halict.: Agapostemon radia- 
tus, Halictus lerouxii. 

Lepidoptera (8, n) — Nymphal.: Anosia; Papilion.: Euphoe- 
ades, Eurymus, Jasoniades, Papilio; Hesperi.: Atrytone zabulon, 
Epargyreus; SpMng.: Deilephila. 

Hepatica acutiloba (16: 153).— Blooms March 18-April 27; 18 
visitors observed, March 27-April 19 ; Mi, W. 

Long-tongued Bees (2) — Ap.: Apis sc, fq; Ceratin.: Zaodonto- 
merus (^. 

Short-tongued Bees (9) — Halict.: Chloralictus sparsus 5, ver- 
satus 5; Collet.: Colletes inaequalis J*; Andren.: Andrena carlini 
cT ?! erythronii J*, mandibularis J*, tridens J*, type, Opandrena 
miserabilis $, Trachandrena rugosa J* $, fq. 

Diptera (7) — Syrph.: Brachypalpus frontosus sf, fq, Eristalis 
dimidiatus sf, Syrphus americanus f ; Bombyli.: Bombylius major 
fq; Tachin.: Gonia capitata; Muse: Pseudopyrellia fq; Anthomy.: 
Phorbia platura. 



ClIAHLES liOUElilSUS IGl 

■ — "Isopyrum biternatum (5:173). — Blooms March 20-May 2; 52 
visitors obst-rvt'd, Marcli 2G-Ai)ril 30; Mi, W. 

Lonj^-tongued Hoes (7) — Ap.: Apis se, fcj ; Bomb.: DoiubuK 
anu'rieaiioruni $; Ceratin.: Ceratina (^, Zaodontomeruii ^T; Mega- 
chiL: Osmia puniila ^T $; Nomad.: Nomada sayi (^ $; Eucer.: Tetra- 
lonia belfragei (^ $. 

Short-tongued Bees (25) — Ilalirt. ($) : A|;apoKteinon radiatuK, 
Chloralictus caeruleus, eressonii, obscurus, pilosus, sparsus sc, ver- 
satus sc, ab, zephyrus ab, C'urtisapis coriacea, forbcsii, Evylacus 
foxii, pectoralis, 4-maculatus, Ilalictus Icrouxii sc, Oxystoglossa 
confusa sc, fq, piira, Scladonia sc, ab; Collet.: Collctcs inacipialis 
(^; Andrrn.: Aiulri'iia carlini ^T ?> f*l' f»^y* d* $> ^M- Opandrcna 
miscrabilis $, c, I'tilandrcna eritrt'niac cT ?. Trachandrena clay- 
toniae (^, forbcsii $, rugosa <^ ?, fq. 

Other Hymcnoptera (1) — Sapyg.: Sapyga. 

Diptera (14) — Syrph.: Chilosia capillata sf, Eristalis dimidia- 
tus. Helophilus sirailis, Melanostoma obscurum, Mcsogramma pemi- 
nata, inari^inata f, n, Sphacrophoria f, n, Syrphus amcricanus sf, 
ribesii, Xylota f raudulosa ; Empid.: Empis nuda; Jiomhyli.: Bom- 
bylins major ab; Tarhiu.: Gonia capitata; Muse: Pscu(h)pyrcllia. 

Coleoptcra (4, f, n) — Anthic: Corphyra tcrminalis; Chrysomel: 
Diabrotica vittata; Coccincll.: Mcgilla; Oedcmcr.: Asclcra rufi- 
collis. 

Ilcmiptera (1) — Cap.^.: Lygus. 

Myosurus minimus. — Blooms April 7-May 17; 1 visitor ob- 
served. May 8 ; :\Ii, Y. 

Short-tongued Bees (1) — Halict.: Chloralictus zephyriLs $, 1. 

Ranunculus abortivus (7:108-9). — Blooms March :n-,June 9; 
24 visitors observed, April 8-May 11 ; Mi, Y. 

Long-tongued Bees (4) — Ap.: Apis; Bomb.: Bombus amcri- 
canorum $; Ceratin.: Ceratina (^; Nomad.: Gnathias ovatus $. 

Short-tongued Bees (10) — Halict. ($) : Chloralictus cres.sonii, 
pilosus, sparsus sc, fq, versatus, zephyrus, Evylacus pectoralis. Oxy- 
stoglos.sa confu.sa, similis, Seladonia; Andrcn.: Opandrcna per- 
sonata (^, fq. 

Diptera (8) — Syrph.: Chilosia petulca. Mcsogramma marginata 
fq, Paragus bicolor fq, Pipiza nigribarba, Spha»rophoria f q ; 
Tachin.: Apinops, Siphona f q ; Sarcophag.: Helicobia helicis. 

Coleoptera (2) — Coccincll.: Coccinella 9-noUta, Megilla f. 

Ranunculus fascicularis (7: 107-8 ).- Blo«.ms 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* $, fq, 
in cop, Zaodontomerus (^; Megachil.: Osmia illinoensis J*, type, 
pumila (^ 5, f q ; Nomad. : Gnathias ovatus J* 5, Holonomada superba 
^ 2, f q, Nomada sayi J* ; Eucer. : Tetralonia dilecta J*. 

Short-tongued Bees (15) — Halict. ($) : Agapostemon radiatus sc, 
fq, Chloralictus pilosus, pruinosus sc, sparsus, versatus sc, fq, 
Curtisapis coriacea, Evylaeus pectoralis sc, Halictus lerouxii, Odon- 
talictus sc, Oxystoglossa confusa sc, fq, Paralictus simplex type, 
Seladonia sc ; Andren. : lomelissa <^, Opandrena cressonii ?, sc, mis- 
erabilis (^. 

Diptera (18) — Syrph.: Chilosia capillata, Eristalis transversus 
f, Melanostoma mellinum, Mesogramma geminata fq, marginata sf , 
fq, Orthoneura pictipennis, Paragus bicolor, Pipiza femoralis fq, 
Sphaerophoria sf, Syrphus americanus, arcuatus, Xylota fraudu- 
losa; Bovnbyli.: Bombylius major; Tachin.: Gonia capitata; Sar- 
cophag.: Sarcophaga cimbicis; Muse: Pseudopyrellia ; Anthomy.: 
Coenosia antica, Phorbia acra fq. 

Lepidoptera (2) — Papilion.: Eurymus; Hesperi.: Thanaos 
juvenalis. 

Coleoptera (1) — Oedemer.: Asclera ruficollis f, n. 

Ranunculus recurvatus. — Blooms April 30-May 21; 5 visitors 
observed. May 10, 11, Mi, Y. 

Long-tongued Bees (1) — Nomad.: Nomada parva J* $. 

Short-tongued Bees (4) — Halict. ($) : Chloralictus obscurus, 
Oxystoglossa confusa, similis; Andren.: Opandrena cressonii (^. 

Ranunculus septentrionalis (7:105-7). — Blooms April 8-May 
24; 52 visitors observed, April 12-May 7; Mi, Y. 

Long-tongued Bees (7) — Ceratin.: Ceratina J* $, sc, ab, Zaodon- 
tomerus <^; Megachil.: Ceratosmia $, sc, Diceratosmia $, c, Moni- 
losmia J*, Osmia pumila ^ 5, sc, ab ; Eucer. : Tetralonia belf ragei J*. 

Short-tongued Bees (16) — Halict. (5) : Chloralictus obscurus 
sc, fq, pilosus sc, sparsus, zephyrus, Curtisapis coriacea sc, fq, 
Evylaeus pectoralis sc, 4-maculatus fq, Halictus lerouxii sc, Odon- 
talictus sc, Oxystoglossa confusa sc, ab, pura, Seladonia sc; Sphe- 
codini: Proteraner ranunculi J*, type; Andren.: Opandrena cres- 
sonii 5, sc, personata <^, Ptilandrena polemonii J* $, ab. 

Diptera (19) — Syrph.: Chilosia capillata ab, Melanostoma ob- 
scurum, Mesogramma geminata, Pipiza femoralis, nigribarba, 
Sphaerophoria, Syrphus americanus, arcuatus, ribesii, torvus; 
Bomhyli.: Bombylius major, pulchellus; Tachin.: Siphona; Muse: 
Morellia; Anthomy.: Anthomyia radicum, pluvialis, Hylemyia 
dilatata fq, Mydaea diruta, Phorbia platura. 



CHARLES ROBEHISOS lti3 

Lepidoptera (3) — Hesperi.: Thanaos brizo, juvenalis, Thorybes 
bathyllus, 

Coleoptera (7) — Anthic: Corpliyra terniinalis sf; Carab.: 
Lebia n; Chrysomel.: Diabrotica vittata f, n; Coccinell.: Megilla 
f, n; Curculion. (n) : Centrinus peracillus f, Idiostethus subcalviw; 
Oedtmer.: Asclera nificollis f, n. 

Thalictrum dasycarpum (anemophilous). — One visitor ob- 
served, June 3. 

Long-ton^ut'd Urcs (1) — Ap.: Apis e, U[. 

KUAMNACEAE 

Ceanothus americanus (2:303-4). — Blooms May 27-July 2; 
121 visitoi-s observed, June IG-July 4; Pol, W. 

Lon<j:-tongued Bees (6) — Bomb.: Bombias auricomus $, c, sep- 
aratus $ $, se; Ceratin.: Ceratina cT; Mcgachil: Ncotrj'petcs trun- 
eatus (^ $, sc; Megaehile brevis $, so; Nomad.: Centrias ameri- 
canus 2- 

Short-tongued Bees (18) — Ualict.: Chloralictus sparsus ^, sc, 
versatus cT $, sc, Curtisapis forbesii (^, Evylaeus arcuatus $, sc, 
type, pectoralis ^, sc, truncatus $, sc, Oxystoglossa confusa $, sc, 
Seladonia $, sc ; Sphecodini : Sphecodes minor $, Sphecodium 
cressonii (^ $; Prosopid.: Prosopis pygmaea (^ $, ziziae <^ $; ColUt.: 
CoUetes eulophi (^ $, willistonii $; Andren.: Andrena platyparia $, 
Trachandrena crataegi $, sc ; Macropid.: Macropis c? $, fq ; Panurg.: 
Calliopsis andreniformis (^. 

Other Ilymenoptera (35) — Sphec: Isodontia apicalis, Sceli- 
phron, Sphex nigricans; Scoli.: Elis 5-cincta ; Philanth.: Cerceris 
clypeata, compacta, corapar, finitima, robertsonii, rufinoda; Vesp.: 
Polistes variatus; Eumcn.: Ancistrocorus tigris, Eumenes fraternus, 
Leionotus dorsalis, foraminatus, fulvipes, fundatus, illinoensis, 
ziziae; Crabron.: Solenius; Oxybel.: Notoglossa americana, frontalis, 
Oxybelus packardii. 4-notatus; Larr.: Tachysphex acutus, belfragei; 
Pompil.: Anoplius illinoensis, Ceropales robinsonii, Poecilopompilus 
navus, Pompiloides marginatus, Psammochares relativus, tenebro- 
sus; Chrysid.: Hedychrum violaceum; Chalcid.: Leucospis; Ten- 
thredin.: Hylotoma humeralis. 

Diptera (42) — Mycetophil.: Sciara atrata; Stratiomy.: Xemo- 
telus; Syrph.: Allograpta, Mesogramma geminata, marginata, 
Orthoneura nitida, Paragus bicolor. Sphaerophoria, Syritta, Syr- 
phus americanus, Tropidia mamillata, quadrata ; Empid.: Par- 
empis; Bombyli.: Anthrax sinuosa ; Conop.: Conops brachyr- 
rhynchus, Oncomyia, Stylogaster biaunulata, Zodion fulvifrons; 



164 FLOWERS AND INSECTS— XXVI 

Tachin.: Archytas analis, aterrima, Cistogaster occidua, Exorista 
confinis, Linnaemyia, Ocyptera tenuis, Pachyophthalmus signatus, 
Paradidyma, Phorantha purpurascens, Siphona, Spallanzania, 
Trichophora, Xantliomelana ; Sarcophag.: Helicobia helicis, Sarco- 
phaga sinuata; Muse: Lucilia caesar, Morellia, Musca, Phormia 
regina, Pseudopyrellia ; Anthoniy.: Limnopliora, Phorbia acra; 
Seps.: Sepsis; Trypet.: Trypeta humilis. 

Lepidoptera (2) — Lycaen.: Theela calanus, sylvinus. 

Coleoptera (14) — Cerambyc: Typoeerus sinuatus; Chrysomel.: 
Diabrotica atripennis, 12-punetata, Pachybrachys ; Curculion.: 
Centrinites, Centrinus picumnus, seutellum-album ; Dermest.: 
Cryptorhopalum haemorrhoidale ; Elater.: Limonius; Lampyr.: 
Telephorus scitulus; Malach.: Attalus; Mordell.: Mordella mar- 
ginata; Oedemer.: Oxacis; Scarabae.: Trichius piger. 

Hemiptera (4) — Caps.: Calocoris, Lygus; Cyan.: Canthophorus ; 
Lygae.: Lygaeus. 

Rhamnus lanceolata (9: 157-9).— Blooms April 23-May 14; 51 
visitors observed on May 14; Mis, Y. 

Long-tongued Bees (4) — Ap.: Apis; Bomb.: Bombus american- 
orum $; Ceratin.: Ceratina J*; Nomad.: Gnathias cuneatus $. 

Short-tongued Bees (23) — Halict. (5) : Agapostemon radiatus 
fq, Augoehlora viridula, Chloralietus illinoensis, pilosus se, fq, 
pruinosus sc, sparsus sc, ab, versatus sc, fq, zephyrus sc, Curtisapis 
forbesii sc, Evylaeus areuatus se, foxii sc, fq, Halictus lerouxii sc, 
Oxystoglossa conf usa sc, f q, pura sc, Seladonia sc, ab ; Spliecodini : 
Spbecodium cressonii ; Andren. : Andrena erythrogastra J*, mandib- 
ularis 5, nasonii 5, sc, type, Opandrena cressonii (^ $, sc, ab, miser- 
abilis (^, personata (^ 5, sc, fq, Trachandrena crataegi <^. 

Other Hymenoptera (3) — Eumen.: Ancistrocerus tigris, Eu- 
menes fraternus; T enthredin. : Dolerus arvensis. 

Diptera (21) — Syrph.: AUograpta fq, Helophilus similis, Meso- 
gramma geminata ab, marginata, Ortlioneura nitida, Pipiza 
femoralis, Sphaerophoria fq, Syritta, Syrplius americanus, ribesii, 
Xanthogramma felix; Empid.: Rhamphomyia priapulus; Tachin.: 
Peleteria; Sarcophag.: Cynomyia, Sarcophaga cimbicis, sinuata; 
Muse: Lucilia caesar, sericata; Anthomy.: Phorbia acra fq, platura 
f q ; Scatophag. : Scatophaga. 

ROSACEAE 

Agrimonia striata. — Blooms July 3-September 7; 1 visitor 
observed, July 24 ; Mi, Y. 

Short-tongued Bees (1) — Halict.: Chloralietus versatus $, sc. 



CHARLES ROBERTSOS 165 

Amclanchier canadensis (15:446-7). — Blooms March litJ May 
1 ; .")! visitors ohscrveil, April 10-22; Mis, W. 

Long-tontfiH'd Hces (6) — Ap.: Apis sc, ab; Horn}).: Bombus 
araerii'anoruin $. ridinpsii $; Cerntin.: I'cratina ^ \ Somad.: 
Xomada dt'iitieulata <^, illiiiocnsis <^. 

Short-tontfued Bees (27) — Ilalict. ($) ; Anupostemon radiatus, 
Chloralic'tiis cafruleiis type, crossonii, pilosus 8C, f(|, sparsus, 
versatus sc, ab, zephyrus ab, Evylaeus arcuatiw sc, f(|, foxii, Ilalirtus 
lorouxii, Scladonia sc; Colli t.: CoUetes inaequaliH <;f 9. ^'1 1 Andrcn.: 
Andrena carliiii <^ $, erythrogastra (^ $, fq, erythronii (^, man- 
dibularis (^, salicis ^^ $, fq, salictaria $. fq. ««>'» c? 9< f'b Opandrena 
crcssoiiii (^ $, sc, ab, miserabilis ^f $, ab, Parandrcna cT 9. f'b 
Tracbandrcna claytoniae J* 9' f<l. forbcsii <^ 9' ^'l- '.'//>''• bipimtos 
(;^ 9' uiariae cT, rufjosa cT. 

Other Hymenoptera (1) — Tcnthridin.: Dolcnis ar%'ensis. 

Diptcra (17) — Syrph.: Brachypalpus frontosus, Eristalis 
aeneus, dimidiatus f(|, transversus, II('lo|)hilus similis, Mcsofrraminii 
peminata, marprinata. Platychirus (juadratus, Sphacrophoria, 
Syrphus americanus f(| ; Bombyli.: BombyliuK major; Tarhin.: 
Euphorocera claripennis, Gonia capitata; Sarcophag.: Cynomyia 
fq; Muse: Pseudopyrellia ; Anthomy.: Ilammomyia ; Sratophag.: 
Scatophajra fq. 

Aruncus Sylvester il5:4:)7; 16: l(ir)-9).— Blooms May 2-l-,June 
20; 78 visitors observed, June 4-20; Mis, \V. 

On staminate flowers (43) : — 

Lonp-tonpued Bees {3)—M€gachil.: Neotrypetea truncatns (^; 
^ omad.: Centrias americanus $, Ilolonomada affabilis <^. 

Short-tongued Bees (6) — Ilalict.: Chloralictus versatus $; 
Prosopid.: Prosopis jiypmaea 9; Andren.: Opandrena personata 
9. serotina (^, Trachandrcna nuda 9. sc, spirat'ana 9. sc, ab, type, 
oligolege. 

Other Ilynu'noptera (3) — Euwni.: Eunifncs fratcrnus; Cra- 
Iron.: Anacrabro; Oxyhd.: Noto^lossji frontalis. 

Diptera (7) — Syrph.: Chilosia pallipes, Chrysopast.'r nipri|H's. 
Sphepina rufivcntris; Enipid.: Empis distans f q ; Conop.: Zodion 
nancllum; Agromyz.: Phytomyza palpalis type: Oscin.: Siphonella 
•inerea. 

Coleoptera (23)— Bruch.: Bruehus hibisci; Ctrambyi.: 
Acmaeops directa, Leptura exigua, vittata, Typocerus badius, 
lugubris; Chrysomel: Disonycha; Currulum.: CVntriniw picumnus 
ab; Elaler.: Scracosomus ; Mnlach.: AnthcK-omuH. Attahw U\, 
M.'lyris f(| ; Mordfll.: Mordellistena biplapiata fq. luti^a. ornata, 



166 FLOWEES AND INSECTS— XXVI 

tosta, Pentaria fq; Nitidul.: Epurea labilis, truncatella; Oedermer.: 
Asclera puncticollis ; Scardbae.: Trichms affinis, piger, Valgus. 

Hemiptera (1) — Caps.: Lopidea. 

On staminate and pistillate flowers (19) : — 

Short-tongued Bees (10) — Halict.: Chloralictus sparsus J* $, 
sc, ab, Evylaeus arcuatus $, sc, foxii $ ; Prosopid. : Prosopis illino- 
ensis (^ $, f q, saniculae (^ $, fq, sayi J* $, ab, ziziae $, f q ; Andren. 
(2) : Andrena platyparia, Opandrena cressonii, Trachandrena 
crataegi, sc, ab. 

Coleoptera (9) — Ceramhyc: Euderces ab, Leptura pubera; 
Dermest.: Antbrenus musaeorum ab, Cryptorhopalum haemorrhoi- 
dale fq, triste ab, Orphilus ab; Mordell.: Mordella marginata ab, 
Mordellistena aspersa f q, pubescens. 

On pistillate flowers (16) : — 

Long-tongued Bees (4) — Ceratin.: Ceratina 5, Zaodontomerus 
(^ ; Nomad. : Gnathias euneatus 5, ovatus $. 

Short-tongued Bees (7, $) — Halict.: Agapostemon radiatus, 
Chloralictus tegularis, Curtisapis coriacea, Evylaeus pectoralis, 
Oxystoglossa confusa, pura; Andren.: Andrena pruni. 

Other Hymenoptera (1) — Cralron.: Blepharipus. 

Diptera (3) — Syrph.: AUograpta, Syrphus ribesii; Tachin.: 
Epigrimyia floridensis. 

Coleoptera (1) — Cerambyc: Molorchus. 

The following 35 species and 70 individuals were taken on the 
flowers, June 8 and 11 : 

Long-tongued Bees (4: 5) — Ceratin.: Ceratina 2, Zaodontomerus 
1; Nomad.: Gnathias euneatus 1, ovatus 1. 

Short-tongued Bees (14:42) — Halict.: Agapostemon radiatus 
1, Chloralictus sparsus 7, tegularis 1, Curtisapis coriacea 1, 
Evylaeus arcuatus 1, foxii 1, pectoralis 2, Oxystoglossa confusa 1, 
pura 1 ; Prosopid. : Prosopis illinoensis 3, saniculae 4, sayi 7, ziziae 
2 ; Andren. : Andrena platyparia 1, pruni 1, Opandrena cressonii 1, 
Trachandrena crataegi 5. 

Other Hymenoptera (1:1) — Crahron.: Blepharipus 1. 

Diptera (3:3) — Syrph.: AUograpta 1, Syrphus ribesii 1; 
Tachin. : Epigrimyia floridensis 1. 

Coleoptera (10:19) — Ceramhyc: Euderces 1, Leptura pubera 
1, Molorchus 2; Dermest.: Anthrenus musaeorum 1, Cryptorho- 
palum haemorrhoidale 3, triste 7, Orphilus 1; Mordell.: Mordella 
marginata 1, Mordellistena aspersa 1, pubescens 1. 

Crataegus coccinea? (15:444-5). — Blooms April 13-May 22; 
56 visitors observed, May 4-12 ; Mis, W. 



CHARLES ROBERTSON 167 

Long-tongued Bees (5) — Ap.: Apis sc, fq; Bomb.: Bombus 
americanorum $, fq, impatiens $; Ccratin.: Ceratina (^ ; XunuuL: 
Centrias americanus J*. 

Short-tongued Bees (15) — Halict. ($) : Cliloralictus sparsus, 
versatus, zephyrus fq, Halictiis lerouxii, Odontalictus, Seladonia 
fq; Andren.: Andrena dunniugii $, sc, fq, erythrogastra (^, sayi <^ 
$, so, fq, Opandrena cressoiiii <-f 5, misorabilis (^ $, se, ah, poi-sonata 
(^, fq, Traehandrena claytoniae <^, f(i, crataegi ^T $» ^^< hfP''> 'I'P- 
l)otes <j*. 

Other Ilymenoptera (3) — Vesp.: Polistes pallipes, ft], variatus; 
Tiphi.: Tiphia clypeata, type. 

Diptera (25) — Stratiomy.: Microchrysa; Syrph.: Eristalis 
aeneus, dimidiatus, Ilelojihilus similis, Mallota cinibiciformis, Me.so- 
gramma geminata, Myiolrpta strigilata fq, Pipiza nigribarba, 
Psilotfl, Syrphus torvus; Empid.: Enipis avida type, Rhainj)homyia 
priapulus, sordida; liamhyli.: Rombylius major, pulchcllus; C'onop.: 
Myopa vesiculosa; Tachin.: Gonia capitata; Sarcophag.: Calliphora 
erythrocephala, Cynoniyia, Sarcophaga slnuata; Muse: Comp- 
soniyia, Lucilia caesar, ^lorellia, Phormia rcgina, Pscudopyrellia fq. 

Lepidoptera (2) — Xymphal.: Anosia, Vanessa liuntera, 

Coleoptera (6) — Ccramhyc: Molorchus fq, in cop; Chrysomel.: 
Diabrotica vittata; Coccincll.: Coceinella sanguinea, Ilippodamea 
15-maculata; Oedemer.: Asclera puncticollis ; Scarahae.: Euphoria 
fulgida. 

Crataegus crus-galli (15:445-6). — Blooms ]\Iay l-.Iun(' 1; 75 
visitors observed, May 17-29 ; Mis, W. 

Long-tongued Bees (9) — Ap.: Apis sc, ab; Bomb. ($) : Bombias 
auricomus, separatus, Bombus americanorum, impatiens; Ccratin.: 
Ceratina J*; Mcgachil.: Prochelostoma (^, Anthemois (^; Eucer.: 
Tetralonia dilecta <^. 

Short-tongued Bees (26) — Ilalict. {% sc) : Chloralictus pilosus 
ab, sparsus ab, tei^ularis fq, versatus ab, zephyrus, Evylaeus 
foxii fq, pectoralis, Oxystoglossa similis fq, Seladonia ab; Prosopid.: 
Pro.sopis crataegi <^, illinoensis ^, pygmaea (^ 9- ^^'^ saniculae <^, 
ziziae c^ $, ab; Collet.: CoUetes inaequalis $, sc; Andrin.: Andrena 
dunningii $, sc, erythrogastra $, mandibularis $, sc, sayi $, sc, 
Opandrena cressonii, (^ % sc, fq, mi.scrabilis (^ $, sc, ab, personata 
(^ $, sc, ab, Parandrena $, Traehandrena claytoniae % sc, fq, 
crataegi ^^ 9, sc, ab, forbesii $, sc. 

Other Ilymenoptera (10) — Vesp.: Polistes pallii>es; Eximen.: 
Ancistrocerus capra, tigri.s, Eumenes fraternus fq, Leionotus 
anormis, foraminatus, Symmorphus debili.s, walshianus; Crabron.: 
Rhopalum scutellatum; Pcmphrcdon.: Cemonus. 



168 FLOWERS AND INSECTS— XXVI 

Diptera (23) — Stratiomy.: Stratiomyia quaternaria; Syrph.: 
Didea, Eristalis dimidiatus, latifrons, transversus, Helophilus 
similis, Mallota cimbiciformis, Mesogramma geminata, Orthoneura 
nitida, Syritta, Volucella vesiculosa, Xanthogramma emarginata; 
Empid.: Empis distans, Rhamphomjda mutabilis; Bombyli.: Bom- 
bylius major; Sarcophag.: Cynomyia, Helicobia 4-setosa; Muse: 
Morellia, Phormia regina, terraenovae; Anthomy.: Phorbia acra, 
platura; Ortal.: Camptoneura. 

Lepidoptera (3) — Nymphal.: Anosia; Lycaen.: Cyaniris; 
Papilion.: Laertias. 

Coleoptera (4) — Buprest.: Acmaeodera culta; Ceramhyc: Mo- 
lorehus; Cler.: Enoplium; Scarabae.: Euphoria fulgida. 

Crataegus mollis (15: 443^).— Blooms April 10-May 17; 73 
visitors observed, April 27-May 9 ; Mis, W. 

Long-tongued Bees (4) — Ap.: Apis sc, ab ; Bomb.: Bombus 
americanorum $; Ceratin.: Ceratina (^ ; Eucer.: Tetralonia 
dilecta ^ $. 

Short-tongued Bees (28) — Halict. ($) : Augochlora viridula, 
Chloralietus cressonii, pilosus sc, sparsus sc, ab, versatus, zephyrus 
sc, ab, Evylaeus arcuatus sc, foxii sc, pectoralis sc, fq, Halictus 
lerouxii sc, fq, Oxystoglossa confusa sc, Seladonia sc, fq; Collet.: 
Colletes inaequalis J* 2 5 Andren. : Andrena dunningii 5> sc, ab, 
mandibularis $, sc, nasonii <^, pruni $, sc, sayi J* P, sc, fq, Opan- 
drena cressonii J* $, sc, ab, miserabilis (^ $, fq, Trachandrena clay- 
toniae (^ $, fq, crataegi J* $, ab, forbesii $, sc, hippotes J^, nuda (^ 
$, rugosa J*, fq. 

Other Hymenoptera (4) — Vesp.: Polistes pallipes, variatus, 
Vespula germanica; Eumen.: Ancistrocerus tigris. 

Diptera (30) — Syrph.: Brachypalpus frontosus, Chilosia punc- 
tulata, Chrysogaster Ontario, Criorhina umbratilis, Eristalis dimid- 
iatus, Helophilus similis, Myiolepta strigilata fq, Orthoneura picti- 
pennis, Pipiza nigribarba, Psilota, Syrphus americanus, Xylota 
fraudulosa; Empid.: Empis avida, humilis, nuda, otiosa, Rham- 
phomyia piligeronis, priapulus fq, sordida fq, in cop, tersa; 
Bombyli.: Bombylius major; Conop.: Myopa vesiculosa fq, in cop; 
Tachin.: Alophora grandis, cotype; Sarcophag.: Calliphora erythro- 
cephala, vomitoria, Cynomyia; Muse: Morella, Phormia regina, 
Pseudopyrellia ; Anthomy.: Phorbia platura. 

Lepidoptera (1) — Nymphal.: Polygonia interrogationis. 

Coleoptera (6) — Ceram&^c. : Molorchus; C/ir^/someL : Diabrotica 
vittata, Disonycha; Cler.: Enoplium; Oedemer.: Asclera puncti- 
collis; Scaraiae.: Euphoria fulgida. 



CHARLES ROBERTSOy 169 

Fragaria virginiana illinoensis (15:440). — Blooms April 13- 
June 11 ; 57 visitors observed, April 25-May 15; Mi, W. 

Lonpr-tongiied Bees (12) — Ap.: Apis; Bomb.: Bombus iin- 
patieus $; Ceratin.: Ceratina (^ $, sc, fcj ; Metjachil.: OKiniini: 
Osmia atriventris (^ $, se, illinoensis ^T, pumila $. sc; Coelioxyini : 
Coelioxys 8-<lentata c^; Nomad.: (hiathias ovatus 5, Holonomada 
superba <^, Xomada illinoensis $; Mdnt.: Homboinelecta ^ ; Kucer.: 
Tetralonia dileeta <^. 

Short-toiifzued Bees (15)— //rt/iV/. ($) : Chloralictus pilosuH 
sc. f(|. te^nilaris, versatus .sc, fij, Evylaeus pectoralis hc, fq, Odon- 
talictus .sc, Oxystog:lo.s.sa confusa sc, pura sc, similis sc, ab. Seladonia 
sc, ab; Sphecodini: Macbaeris stypia ; Prosopid.: Prosopis pypmaea 
$, ziziae (^; Andrcn.: (^, sc) : Andrcna nasonii f<|. Opandrcna 
cressonii, Trachandrena forbesii. 

Other Ilymenoptera (1) — Vesp.: Polistes variatus. 

Diptera (21) — Stratinmy.: Xemotelus; Sijrph.: Eristalis trans- 
versus, Ilelophilus similis. Mcsofjraninia marfjinata, Orthoneura 
pictipennis fq. Para«;us bicolor fq, Sphaeropbnria ftj. Tropidia 
mamillata ; Empid.: Enipis huniilis. Klianiphomyia priapiilus; 
liomhyli.: Bonibylius pulchellus; Conop.: Myoj)a vesiculosa. Zodion 
fulvifrons; Tachin.: Gymnosoma, Peleteria ; Sarrophag.: Helicobia 
helicis, Sarcophaga sinuata f q ; Muse: Lucilia caesar, sylvaruni; 
Anthomy.: Phorbia acra, platura. 

Lepidoptera (7) — Nymphal.: Phyciodes; Lycaen.: Everes; 
Papilion.: Eiirymus, Pieris; Hesperi.: Pholisora catullu.s, Thanaos 
juvenalis; Xoctu.: Pliisia simplex. 

Ileniiptera (1) — Nab.: Cori.scus. 

Geum canadense (15:439). — Blooms June 18-September 27; 
22 visitors ob.served, July 6-11 ; Mi, W. 

Long-tongued Bees (1) — Pasit.: IIolcopa.site8 illinoensis 9- 

Short-tongued Bees (9) — Halict.: Chloralictus pilosus 9. 
pruinosus $, sc, sparsus $, sc, tegularis $, versatus $, .sc. Oxysto- 
glossa similis (^ 9» ^e, Seladonia <^; Prosopid.: Prosopis pygmaea ^T; 
Panunj.: Calliopsis andreniformis ^. 

Other Ilymenoptera (6) — Philanth.: Terceris compacta; 
Eumen.: Eumones fraternus. Leionotus histrionalis, ziziae; Cra- 
bron.: Solenius; Chrysid.: Iledyehrum violaciMim. 

Diptera (3) — Syrph.: Me.sogramma marginata; Tachin.: Oeyp- 
tera dosiades; Sarcophag.: Helicobia helicis. 

Coleoptera (2) — Crrambyc: EJuderces; Mordell.: Mordella mar- 
ginata. 

Hemiptera (1) — Corimrlacn.: Corimelaena pulicaria. 



170 FLOWERS AND INSECTS^XXVI 

Geum vernum (15: 439^0).— Blooms April 12-May 24; the 
first 100 individuals, belonging to 18 species, were taken May 1-15 ; 
Mi, Y. 

Long-tongued Bees (2:17) — Ceratin.: Zaodontomerus J*, 1; 
Nomad.: Nomada parva J* $, 16. 

Short-tongued Bees (13: 67) — Halict. (5) : Chloralictus sparsus 
7, tegularis 1, versatus 4, Evylaeus foxii 1, pectoralis 3, Oxystoglossa 
confusa sc, 3, similis sc, 6, Seladonia 3; Sphecodini: Sphecodium 
eressonii 1; Prosopid. (J*) : Prosopis pygmaea 2, sayi 1, ziziae 2; 
Andren.: Opandrena personata (^ % 33. 

Diptera (3:16) — Syrph.: Mesogramma geminata 2, Paragus 
bicolor 3; TacJiin.: Siphona 11. 

Gillenia stipulacea (16: 169-70).— Blooms June 3-July 7; 25 
visitors observed, June 15-30 ; Ma, W. 

Long-tongued Bees (11) — Ceratin.: Ceratina 5, sc, ab, Zaodon- 
tomerus <;^; Megachil.: Trypetini: Neotrypetes truncatus (^ $, sc, 
fq; Osmiini: Alcidamea simplex (^ $, sc, ab, truncata $, sc, Leu- 
cosmia $, sc, Osmia atriventris $, distincta $, sc, ab; Megachilini : 
Megachile addenda 2, sc ; Nomad. : Holonomada affabilis $ ; Antho- 
phor. : Anthemoessa J*. 

Short-tongued Bees (Q)— ^Halict.: Chloralictus sparsus $, c, fq, 
n, versatus $, sc, Evylaeus pectoralis <^ $, sc, 4-maculatus $; 
Panurg. : Calliopsis andrenif ormis <^, Heterosarus J* $, sc, ab. 

Diptera (4) — Syrph. (f, n) : Baecha fuscipennis, Pipiza nigri- 
barba; Bomhyli.: Bombylius atriceps; Conop.: Stylogaster bian- 
nulata fq. 

Lepidoptera (4) — Papilion.: Euphoeades, Laertias; Hesperi.: 
Thorybes bathyllus, pylades. 

Potentilla canadensis (15:441). — Blooms April 23^une 17 
30 visitors observed, May 14-June 2 ; Mi, Y. 

Long-tongued Bees (8) — Bomh.: Bombus americanorum $ 
Ceratin.: Ceratina ^ $, fq, Zaodontomerus cJ*; Stelid.: Microstelis 
(^; Megachil.: Alcidamea simplex J*, Osmia pumila 5; Nomad. 
Centrias americanus J*, Nomada parva J*. 

Short-tongued Bees (10) — Halict. ($) : Chloralictus versatus, 
Evylaeus pectoralis, Odontalictus, Oxystoglossa confusa sc, ab, 
similis sc, ab, Seladonia; Sphecodini: Proteraner, Sphecodium 
eressonii; Prosopid.: Prosopis ziziae <^; Andren.: Opandrena per- 
sonata J* $, ab. 

Other Hymenoptera (4) — Eumen.: Leionotus anormis, clypeatus 
fq, histrionalis, ziziae. 



CHARLES EOBERTSON 171 

Diptera (7) — Syrph.: Paragus tibialis, Syritta; Tachin.t 
Apinops. Cistogaster occidua; Sarcophag.: Ilelicobia helicis; Muse: 
Lucilia caesar; Anthomy.: Phorbia platura. 

Lepidoptera (1) — yymphuL: Phyciodcs. 

Potentilla monspeliensis norvegica. — Bl(K)ni.s May I'J-Novem- 
ber 19; 23 visitors obsorv«'.i. .Inly 2.'), 27; Mi, Y. 

Short-toiigued Bees (13) — llalict.: Agapostfinon radiatus (^, 
fq, Chloralic'tus pilosus (^, sparsus $, sc, fcj, versatu.s cf 9. '♦c. ^<li 
Evylacus j)Cctoralis $, Odontalictus (^, Oxysto^lossa similis 9. *»c» 
Seladonia (^ 9, fcj ; Sphoeodini: Sphocodcs arven.sis 9, Sphocodiura 
cri'ssonii 9 ; Prosupid.: Prosopis pygmaea (^ 9» ^n» ziziae 9 ; I'onurg.: 
Calliopsis andreniformis (^. 

Other Ilymenoptera (1) — Oryhel.: Xotoglossa frontalis f(i. 

Diptera (8) — Syrph.: Mesogramma geminata, marginata, 
Sphaerophoria fq, Syritta; Conop.: Oneomyia ; Tachin.: Gymno- 
prosopa; Sarcophag.: Helieobia helieis; Anthomy.: Phorbia aera. 

Lepidoptera (1) — Lycaen.: Everes. 

Prunus americana (15: 435-6).— Blooms March 31-May 5; 76 
visitors observed, April 17-29; Mis, W, 

Long-tongued Bees (14) — Ap.: Apis sc, ab; Bomb.: Bombua 
americanorum 9. impaticns 9; Ceraiin.: Ceratina c^, ab, Zaodonto- 
merus ,^, fq; \om(ul.: Gnathias ovatus (^, Ileminomada c? 9. ^n» 
Holonomada superba (^, Xoniada dentieiilata J*. illinoensis (^ 9. 
Phor (^, Xanthidium lutcoloides 9. luteolum 9; Euccr.: Tctralonia 
dilecta cf 9. ab. 

Short-tongued Bees (26) — Ilalict (9) : Agapostemon radiatu-s, 
Chloralictus pilosus sc, ab, pruinosus sc, ab, sparsus, tegularis, ver- 
satus sc, ab, zephyrus sc, Evylaeus arcuatus, Ilalictus lerouxii sc, 
Seladonia .sc; Sphecodini: Sphecodes ar\'ensis; Prosopid.: Prosopi.s 
pygmaea <^; Collet.: Colletes inaequalis (^ 9. ^M? Andren.: Andrena 
erj'throgastra (^ 9» ab, erythronii 9. sc. illinoensis ^T, fq, mandibu- 
laris 9, pnini ^T, salicis (^, sayi ^f 9. sc, fq, Opandrena cre-ssonii (^ 9. 
sc, ab, mi.serabilis cf 9. sc, ab, Parandrena cf 9. "b. Trachandrrna 
claytoniae (^ 9. sc, ab, forbesii J*, hippotes (^ 9. sc, f(i. 

Other H.vmenoptera {3)—Vesp. Polistes pallipes, variatus; 
Ichneumon.: Bathycetes. 

Diptera (2:i)— Syrph.: Brachypalpus fronto.sus. Chry.sogaster 
Ontario, Eri.stalis dimidiatus. Ilelophilus similis, Mesogramma 
^minata, marginata ab. Orthoneura nitida, Platychirus hyp<«r- 
boreus, Sphaerophoria, Syrphus americanus. tomis; Empid.: 
Empis otiosa fq. Rhamphomyia priapulus; Bomh't'' • i'. '.,».v1m,4 



176 FLOWERS AND INSECTS— XXVI 

bimaculata J*, petalostemonis $, variabilis $, sc, Peponapis (^; 
Emphor.: Emphor 5- 

Short-tongued Bees (6) — Halict.: Agapostemon radiatus J*, 
texanus $, viridulus $, Halictus lerouxii 5, Odontalictus $; Pro- 
sopid.: Prosopis ziziae 5, f, n. 

Other Hymenoptera (4) — 8phec.: Sphex nigricans; Scoli.: Elis 
5-cincta; Eunien.: Leionotus arvensis; Pompil.: Priocnemoides ful- 
vicornis. 

Diptera (10) — Syrph.: Eristalis latifrons, tenax ab, Spbaero- 
phoria, Syritta, Volucella evecta, vesiculosa; Conop.: Conops 
brachyrrhynchus, Physocephala texana, tibialis; Muse: Musca. 

Lepidoptera (29) — Nymphal.: Anosia ab, Argynnis, Basilarchia 
archippus, Cereyonis, Phyciodes ab, Vanessa atalanta ab, cardui, 
huntera; Lycaen.: Chrysophanus ab, Cyaniris, Everes, Uranotes; 
Papilion.: Euphoeades, Eurymus, Laertias, Papilio ab, Pieris, 
Pontia, Zerene; Hesperi.: Atalopedes, Atrytone delaware, zabulon, 
Epargyreus ab, Limochores taumas ab, Polites, Thanaos juvenalis, 
Thorybes bathyllus; Arcti.: Utetheisa; Ctenuch.: Scepsis. 

Coleoptera (f, n) — Coccinell.: Hippodamea 15-maculata ; 
Scarahae.: Trichius piger. 

Hemiptera (1) — Lygae.: Oncopeltus. 

July 9, 1913, the following 74 individuals, of 21 species, were 
taken on the flowers : 

Long-tongued Bees (10:56) — Ap.: Apis 32; Megachil.: Mega- 
chile brevis 5, petulans 2, 6-dentata 1, Sapapis sayi 1; Epeol.: Tri- 
epeolus concavus 3, concolor 5, lunatus 2; Eucer.: Epimelissodes 
obliqua 2, Melissodes bimaculata 3. 

Short-tongued Bees (1 : 1) — Halict.: Halictus lerouxii 1. 

Other Hymenoptera (3:4) — Sphec: Sphex nigricans 2; Scoli.: 
Elis 5-cincta 1; Eumen.: Leionotus arvensis 1. 

Diptera (1: 1) — Conop.: Physocephala texana 1. 

Lepidoptera (6:12) — Nymphal.: Argynnis 1, Phyciodes 1; 
Lycaen.: Chrysophanus 1; Papilion.: Eurymus 2, Pontia 6; 
Hesperi.: Thorybes bathyllus 1. 

Galium aperine. — Blooms May 4-June 22; 1 visitor observed, 
May 15 ; Mi, W. 

Short-tongued Bees (1) — Halict.: Chloralictus obscurus $. 

Galium trifidum. — Blooms May 22-July 9 ; 8 visitors observed, 
June 26 ; Mi, W. 

Short-tongued Bees (1) — Prosopid.: Prosopis pygmaea <^. 

Diptera (7) — Syrph.: Mesogramma marginata, Pipiza pubes- 
cens, Syritta; Tachin.: Cistogaster occidua, Euphorocera claripen- 
nis; Sarcophag.: Helicobia helicis; Anthomy.: Coenosia antica. 



CHARLES ROBERT SOS 177 

Houstonia purpurea calycosa (5:275). — Blooms May lii-July 
4; 37 visitors observed, May 25-June 12; Mi, W. 

Lon«;-ton<;ued Bees (9) — Ap.: Apis; Bomb.: liombias separa- 
tus $; Ctratin.: Ceratina <^ 9, se, ab; Megachii: \eotr>peti's pro- 
duetus <^, type, Aleidainea simplex cf ; yoinad. (9) : Ceiitrias ameri- 
canus, Ilolonomada affabilis, superba; Eucer.: Tetralonia rosae (^. 

Short-ton«?ued IWes (D) — Ilalict. ($) : Cldoralietus albipennia 
se, pilosus se, versatus se. Evylaeus i)eetoralis, Odontalietus, Oxysto- 
j»Iossa eonfusa se. similis se, Seladoiiia ; Panur<j.: Calliopsis aiidreni- 
formis ^ 9, sc, ab. 

Diptera (9) — Syrph.: Eristalis dimidiatus, Meso^^ramma marjfi- 
nata, I'arajjus bieolor, til)ialis, Sphacrophoria se, ab, Syritta; 
Botnbyli.: Hoinbyliiis atrieeps; Tarhin.: Arehytas analis. Spallaii- 
zania. 

Lepidoptera (7) — Symphal.: Charidryas {(\; Lycaen.: Cbryso- 
phanus f q ; Papilion.: Pieris, Pontia; Ihsptri.: Aneyloxypba ab. 
I'holisora eatullus, Polites. 

Coleoptera (3) — Ciirculioti. ( f , n) : Centrinites, ('eiitriiius scii- 
tcllum-album; Scarahae.: Triehius piper sf, ab. 

RlTACKAK 

Ptclca trifoliata (9:135-7). — lilooms May 7-June 23; 08 vi.s- 
itors obsened, ^lay 22-June 8; Mis, W. 

Long-tongued Bees (5) — Ap.: Apis sc, fq; Bomb.: Bombias 
auricomus $, se; Ceratin.: Cenitina $, se, ab; Xomad.: Gnatbias 
ovatus $; Eucer.: Tetralonia dileeta $, se. 

Sbort-tongued Bees (28) — Ilalict. ($) : Agapo.stemon radiatus, 
viridulus, Chloralietus eressonii .se, pilosus, sparsus .so, te{?ularis sc, 
versatus se, Curtisapis eoriaeea, Halietus lerouxii, Odontalietu.s, 
Oxystoglossa eonlu.sa; Sphecodini : Drepanium f(i ; Prusopul.: 
Prosopis .sayi (^, ziziae (^\ Collet.: CoUctes eulophi (^, inaequalis $, 
se ; Andren.: Andrena platyi)ana cT 9> '*<^» Opandrena eressonii 9. 
miserabilis $, sc, fq, serotina 9» ^^^ ^H. Traelian<lrona elay- 
toniae 9» crataegi 9. sc, forbesii 9» hcraelei 9. ^<'. hippotes 
9, sc, ab, type, nuda 9. »<?, fq, rugosa 9. spiraeana 9- 

Other Ilymenoptera {14)— Sphec: Sphex vulgaris; Scoli.: 
Camp.somcris; Philnnth.: Cereeris eompar; Euvicn.: Aneistrwcrus 
tigris, unifaseiatus, Eumenes fraternus, Leionotus elypeatus. 
foraminatus. scropluilariae. ziziae; Crabron.: Solenius; Oxybel.: 
Notoglos.sa anierieana, inoniata; Chalcul.: I.eueospi.s. 

Diptera (19) — SIrntiomy.: Strntiomyia mei}?enii ; Syrph.: Mal- 
lota eimbieiformis, Myiolepta nigra, Sphaerophoria, Syritta, Volu- 
eella vesiculosa; Empid.: Kmpis di.stans, levicula; Conop.: Conops 



174 FLOWERS AND INSECTS— XXVI 

Rubus canadensis. — Blooms May 2-June 29; 48 visitors ob- 
served, May 10-26 ; Mi, W. 

Long-tongued Bees (16) — Ap.: Apis fq; Bomh.: Bombus ameri- 
canorum $, ab; Ceratin.: Ceratina J* $; Megachil.: Osmiini: 
Alcidamea simplex J* $, sc, Ceratosmia $, sc, Hoplitis J* $, sc, Osmia 
atriventris $, sc, cordata $, pumila $, sc, fq; Megachilini: Mega- 
chile brevis (^, mendica J* ; Coelioxyini : Coelioxys sayi J* $ 5 Nomad.: 
Centrias americanus $, Holonomada superba J* $, fq; Eucer.: 
Tetralonia dilecta ^ 2> ^^t, rosae J* $. 

Short-tongued Bees (15) — Halict. ($) : Agapostemon viridulus 
sc, Chloralictus versatus sc, Evylaeus pectoralis sc, Odontalictus, 
Oxystoglossa similis sc ; Andren. : Andrena carlini $, nasonii 5, sc, 
pruni 5, sc, Opandrena cressonii $, sc, personata J*, Trachandrena 
claytoniae $, sc, crataegi 5, sc, forbesii $, hippotes $, sc, nuda 
?, sc. 

Other Hymenoptera (2) — Eumen.: Leionotus foraminatus, 
scrophulariae. 

Diptera (6)—8yrph.: Eristalis dimidiatus, latifrons, Tropidia 
quadrata; Bomdyli.: Bombylius atriceps fq; Conop.: Zodion fulvi- 
frons; Sarcophag.: Helicobia helicis. 

Lepidoptera (9) — Nymphal.: Charidryas; Papilion.: Eurymus; 
Hesperi.: Atrytone zabulon, Epargyreus, Limochores taumas, 
Pholisora catullus, hayhurstii, Thanaos juvenalis, Thorybes pylades. 

Rubus occidentalis (15:437-8).— Blooms May 3- June 9; 22 
visitors observed. May 12-29 ; Mi, W. 

Long-tongued Bees (10) — Ap.: Apis f q ; Bomh.: Bombias sep- 
aratus 5, Bombus americanorum $; Megachil.: Alcidamea simplex 
cf, Osmia pumila $, Megachile brevis 5; Nomad.: Gnathias ovatus 
$, Holonomada affabilis J*, f q, superba <^ ?, f q ; Eucer. : Tetralonia 
dilecta J* ?• 

Short-tongued Bees (5, $) — Halict.: Odontalictus, Oxystoglossa 
confusa sc, Seladonia; Andren.: Andrena carlini se, Opandrena 
cressonii. 

Other Hymenoptera (2) — E^wmew.; Leionotus anormis; Cra- 
iron.: Solenius. 

Diptera (1) — Tachin.: Archytas aterrima. 

Lepidoptera (4) — NympJial.: Charidryas; Hesperi.: Limochores 
taumas, Pholisora catullus, Polites. 

Rubus villosus (15 : 438-9).— Blooms May 2^uly 1 ; 89 visitors 
observed. May 12- June 16 ; Mi, W. 

Long-tongued Bees (23) — Ap.: Apis sc, ab; BomT). ($) : Bom- 
bias auricomus, separatus sc, Bombus americanorum sc, fq, im- 



CUAULES liUBEia6U.\ 175 

patiens, Psithyrus variabilis; Ceratin.: Ceratina <^ $, sc, fq; 
Megachil.: Osmiini : Alcidamea simplex <^ ^, sc, Ceratosmia $, 8C, fq, 
Hoplitis $, sc, Osmia puraila $, sc; Mcf^achilini : Anthemois (^, 
Megachile brevis <^, mendica $; Coelioxyini : Codioxys 8-<lentata 
c^, sayi cf ; Nomad.: Gnathias ovatus $, Holonomada afTabilis ^T 9> 
fq, superba ^ $, fq, Nomada sayi $; Euccr.: Tetraloiiia dilecta (^ 9» 
in cop, rosae (^; Anthophor.: Anthemoessa $. 

Short-tongued Bees (27) — llalkt. (9) : Agapostemon radiatuB, 
Augochlora fervida sc, viridula sc, Chloralictus sparsus c, n, ver- 
satus c, n, Curtisapis forbesii sc, Evylaeus peetoralis sc, fq, Ilalictus 
lerouxii, Odontalictiis sc, Oxystoglossa confusa sc, similis sc, I*aralic- 
tus simplex, Sehulouia sc, fq; Spheeodini: Sphecodes arvensis, 
Sphecodium cressonii; Prosopid.: Prosopis i)ygraaea $; Collet.: 
Colletes aestivalis <^, inae(iualis $, sc ; Andrcn. ($) : Andrena car- 
lini, dunningii, mandibularis, sayi sc, Opandrena personata sc, 
Trachandrena claytoniae, crataegi sc, forbesii sc, nuda. 

Other Ilymenoptera (7) — Sphec: Isodontia apicalis, Sphex 
nigricans; Eumen.: Leionotus an'cnsis, histrionalis, vagus, ziziae; 
Crahron.: Solenius. 

Diptera (16) — Syrph.: Didea f, n, Eristalis dimidiatus f, n, 
Mesogramma niarginata f, n, Paragus bicolor n, Sphaerophoria, 
Syritta f, Syrphus ribesii f, n, Tropidia mamillata, Volueella vesica- 
losa f q ; Empid.: Empis distans; Bomhyli.: Aldrichia f, fq, n, 
Bombylius atriceps; Conop.: Zodion fulvifrons; Tachin.: Archytaa 
aterrima, Ocyptera tenuis, Spallanzania. 

Lepidoptera (13) — Nyniphal: Anosia, Charidrj-as, Vanessa 
atalanta; Lycaen.: Chrysophanus ; Papilion.: Eurymus, Pontia; 
Hespcri.: Atrytone zabulon, Epargyreus, Euphyes metacoraet, 
Limochores taumas, Polites fq, Thanaos juvenalis; Ctenuch.: 
Scepsis. 

Coleoptera (3) — Scarahae.: Euphorea fulgida f, n, sepulchralis 
f, n, Trichius piger sf. 

RUBIACEAE 

Cephalanthus occidentals (4: 65-7).— Blooms June 27-AugU8t 
25; 77 visitors obser\'ed, July 5-August 17; Mas, W. 

Long-tongued Bees (25) — Ap.: Apis ah; liomb.: Bombias auri- 
comus 2 5. ^Q. scutellaris $, .separatus cT $ 5' ab, Bombu.s amcri- 
canorum c? $ ?, sc, ab, impatiens 5, sc, fq, ridingsii (^, P.sithyrus 
variabilis $; Ceratin.: Ceratina $; MegachU.: Megachile brevis (^ 9. 
fq, mendica 9, c, petulans 9. 6-dentata <^ 9. Sayapis sayi 9 ; Somad.: 
Cephen 9; Epeol. {(^ 9) ' Triepeolus conca>'Us, conoolor fq. lunatus; 
Eucer.: Epimeli.ssodes obliqua c^ 9» ^y ^H, Florilegus 9, MeliRsodct 



176 FLOWERS AND INSECTS— XXVI 

bimaculata J*, petalostemonis $, variabilis $, sc, Peponapis J*; 
Emplior.: Emphor $. 

Short-tongued Bees (6) — Halict.: Agapostemon radiatus <^, 
texanus $, viridulus % Halictus lerouxii 5, Odontalictus 5; P^o- 
sopid.: Prosopis ziziae $, f, n. 

Other Hymenoptera (4) — 8phec.: Sphex nigricans; Scoli.: Elis 
5-cincta; Eumen.: Leionotus arvensis; Pompil.: Priocnemoides ful- 
vicornis. 

Diptera (10) — Syrph.: Eristalis latifrons, tenax ab, Sphaero- 
phoria, Syritta, Volucella evecta, vesiculosa; Conop.: Conops 
brachyrrhynchus, Physocephala texana, tibialis; Muse: Musca. 

Lepidoptera (29) — Nymphal.: Anosia ab, Argynnis, Basilarchia 
archippus, Cercyonis, Phyciodes ab, Vanessa atalanta ab, cardui, 
huntera; Lycaen.: Chrysophanus ab, Cyaniris, Everes, Uranotes; 
Papilion.: Euphoeades, Eurymiis, Laertias, Papilio ab, Pieris, 
Pontia, Zerene; Hesperi.: Atalopedes, Atrytone delaware, zabulon, 
Epargyreus ab, Limochores taumas ab, Polites, Thanaos juvenalis, 
Thorybes bathyllus ; Arcti. : Utetheisa ; Ctenuch. : Scepsis, 

Coleoptera (f, n) — Coccinell.: Hippodamea 15-maculata ; 
Scarabae.: Trichius piger. 

Hemiptera (1) — Lygae.: Oncopeltus. 

July 9, 1913, the following 74 individuals, of 21 species, were 
taken on the flowers : 

Long-tongued Bees (10:56) — Ap.: Apis 32; Megachil.: Mega- 
chile brevis 5, petulans 2, 6-dentata 1, Sapapis sayi 1; EpeoL: Tri- 
epeolus concavus 3, concolor 5, lunatus 2; Eucer.: Epimelissodes 
obliqua 2, Melissodes bimaculata 3. 

Short-tongued Bees (1: 1) — Halict.: Halictus lerouxii 1, 

Other Hymenoptera (3:4) — Sphec: Sphex nigricans 2; Scoli.: 
Elis 5-cincta 1; Eumen.: Leionotus arvensis 1. 

Diptera (1: 1) — Conop.: Physocephala texana 1. 

Lepidoptera (6:12) — Nymphal.: Argynnis 1, Phyciodes 1; 
Lycaen.: Chrysophanus 1; Papilion.: Eurj^mus 2, Pontia 6; 
Hesperi.: Thorybes bathyllus 1. 

Galium aperine. — Blooms May 4-June 22; 1 visitor observed, 
May 15 ; Mi, W. 

Short-tongued Bees (1) — Halict.: Chloralictus obscurus $. 

Galium trifidum. — Blooms May 22-July 9 ; 8 visitors observed, 
June 26 ; Mi, W. 

Short-tongued Bees (1) — Prosopid.: Prosopis pygmaea J*. 

Diptera (7) — Syrph.: Mesogramma marginata, Pipiza pubes- 
cens, Syritta; Tachin.: Cistogaster occidua, Euphorocera claripen- 
nis; Sarcoph^g.: Helicobia helicis; Anthoyny.: Coenosia antica. 



CHAKLKS liUtiKHlSUS 177 

Houstonia purpurea calycosa (5:275). — Blooms May IH-.July 
4; 37 visitors observed, May ^o-Juiie 12; Mi, W. 

Lonp-tonffued Bees (9) — Ap.: Apis; Bomb.: Boinbias separa- 
tus $; Ceratin.: Ceratina (^ % sc, ab; Megachil.: Neotn'petes pro- 
ductus cf, type, Alcidamea simplex (^; Nomad. ($) : Centrias araeri- 
canus, Ilolonomada affabilis, superba; Eucer.: Tetralonia rosae cf. 

Short-toii<;iied Ii<>es (9) — Ilalict. ($) : Cliloralietus ulbipt'iuiis 
so, pilosus se, versatus se. Evyhu'us pectoralis, Odontalietus. Oxysto- 
*»lossa eonfusa se. similis se. Sidadonia; Panunj.: Calliopsis aiidn*ni- 
formis (^ $, sc, ab. 

Diptera (9) — Syrph.: Kristalis dimidiatus, Mesof^ramma marj^i- 
iiata, Parapus bieolor. tibialis, Spliaerophoria se, ab, Syritta; 
Bombyli.: Bombylius atrieeps; Tarhin.: Areliytas analis, Spallan- 
zania. 

Lepidoptera (7) — Nymphal.: Charidryas f q ; Lycacn.: Chryso- 
phanus fq; Papilion.: Pieris, Pontia ; Ilesperi.: Ancyloxypha ab, 
Pholi.sora eatullus, Polites. 

Coleoptera (3) — Curculion. (f, n) : Ceiitrinites, Centrinus seu- 
tcllum-alhum ; Scurafxu.: Triehius pifjer sf, ab. 

Rltack.\k 

Ptelea trifoliata (9:155-7). — Blooms May 7-June 23; 68 vi.s- 
itors observed, May 22-June 8; Mis, W. 

Long-tongued Bees (5) — Ap.: Apis .sc, l'(| ; liomh.: Bombias 
auricomus $, sc; Ceratin.: Ceratina $, se, ab ; Xomad.: (inathias 
ovatus $; Eiicer.: Tetralonia dilecta $, sc. 

Short-tongued Bees (28) — Ilalict. ($) : Agapostcmon radiatus, 
viridulus, Chloralictus cre.ssonii .sc, pilosu.s, sparsus se, tegularis so, 
versatus sc, Curtisapis coriaeea, Halietus lerouxii, Odontalietu.s 
Oxystoglossa eont'u.sa; Sphecodini: Drepanium f(i; Prosopid.: 
Prosopis sayi ^, ziziae ^\ Collet.: Collctcs eulophi c^, inacqualis $, 
sc; Andren.: Andrena platyparia ^ $, sc, Opandrena crcssonii 9. 
miserabilis 9, se, fq, serotina $, sc, fq, Traehandrcna clay- 
toniae $, crataegi $, sc, forbesii $, heraclei 9- '**'. bippotes 
9, .sc, ab, type, nuda $, sc, fq, rugo.sa 9, spiraeana 9- 

Other Ilymt'noptera {\A)—Sphec.: Sphex vulgaris; .s'ro/i.: 
Campsomens; Philnnth.: Ccrceris eompar; Eumcn.: Anei.stnx-crus 
tigri.s, unifaseiatus. Eumenes fraternus, Lrionotus clypeatu.H, 
foraminatus, scrophulariae, ziziae; Crahron.: Solenius; Oxyhrl.: 
Xotoglossa amcrieana, inomata; Chalcid.: Lcueospis. 

Diptera {'I0)—Stratiomy.: Stratiomyia meigcnii; Syrph.: Mal- 
lota cimbiciformi.s, Myiolepta nigra, Sphaorophoria, Syritta, Volu- 
eella vesiculosa; Kmpid.: Kmpis distaiiv' '.•• ;■"' ■ ('..»"<' • run.M»« 



178 FLOWERS AND INSECTS— XXVI 

braehyrrhynchus, Dalmannia, Myopa vesiculosa ; TacMn. : Archytas 
analis, aterrima, Linnaemyia, Trichopoda pennipes; Sarcophag.: 
Helicobia helicis ; Muse. : Pseudopyrellia ; Anthomy. : Anthomyiella, 
Phorbia platura fq. 

Lepidoptera (2) — Nymphal.: Neonympha; Agarist.: Alypia. 

May 27, 1911, the following 22 species and 44 individuals were 
taken on the flowers : 

Long-tongued Bees (4: 21) — Ap.: Apis 6 ; Bomb.: Bombias auri- 
comus 1 ; Ceratin. : Ceratina 13 ; Eucer. ; Tetralonia dilecta 1. 

Short-tongued Bees (11: 16) — Halict.: Agapostemon viridulus 
1, Chloralictus sparsus 3, tegularis 1; Prosopid.: Prosopis ziziae 1; 
Collet.: Colletes eulophi 1; Andren.: Opandrena eressonii 1, 
miserabilis 2, serotina 1, Trachandrena erataegi 2, heraclei 2, 
hippotes 1. 

Other Hymenoptera (4:4) — Sphec: Sphex vulgaris 1; 
Philanth.: Cerceris compar 1; Crahron.: Solenius 1; Oxyhel.: Noto- 
glossa americana 1. 

Diptera (3: 3) — Syrph.: Sphaerophoria 1, Syritta 1; Empid.: 
Empis levicula 1. 

Zanthoxylum americanum (7:109-11). — Blooms March 31- 
April 28 ; 59 visitors observed, April 9-25 ; Mis, Y. 

On staminate flowers (7) : — 

Short-tongued Bees (2, $) — Halict.: Chloralictus eressonii, 
Curtisapis coriacea. 

Other Hymenoptera (3) — Vesp.: Polistes pallipes; Pompil.: 
Cryptocheilus conicus; Chrysid.: Holochrysis hilaris. 

Diptera (1) — Syrph.: Brachypalpus frontosus. 

Coleoptera (1) — Oedemer.: Asclera puncticollis. 

On stami7iate and pistillate flowers (16) : — 

Long-tongued Bees (4, ab) — Ap.: Apis sc; Megachil.: Osmia 
pumila J*; Nomad.: Gnathias cuneatus ^^ % type, Xanthidium lu- 
teolum ^ $. 

Short-tongued Bees (10) — Halict. ($) : Chloralictus sparsus sc, 
ab, versatus sc, ab, Oxystoglossa confusa; Collet.: Colletes inae- 
qualis ^ % ab, in cop ; Andren. : Andrena sayi J*, ab, Opandrena 
eressonii J* 5, ab, miserabilis J* ?, ab, Trachandrena claytoniae J* $, 
ab, forbesii J* 5, fq, rugosa ^, fq. 

Diptera (2) — Syrph.: Mesogramma geminata ab; Tachin.: 
Gonia capitata ab. 

On pistillate flowers (36) : — 

Long-tongued Bees (8) — Ceratin.: Zaodontomerus J*; Megachil.: 
Ceratosmia J* ?, ab ; Nomad. : Gnathias ovatus J*, f q, Nomada ores- 



CHARLES HOBEHISOS 17«J 

sonii <^, denticulata (^ $, illinoensis ^ $, fq, saji (^ $, ab, Xan- 
thidium luteoloidcs J*. 

Short-tongucd Bees (12) — Ilalict. ($) : Auj^ochlora viridula, 
Chloralictus caciiilcus fq, zcphyrus fq, EN'j'lacus arcuatus, foxii U\, 
Halictus leroiixii, Odontalictus, Paralietus platyparius; Andren.: 
Andrena mandibularis <^, pruni (^ $, fq, Opaiidrciia dubia cT, fq, 
Trachandreua hippotes (^. 

Diptera (15) — Syrph.: Eristalis dimidiatus, Ilclophilus similiH, 
Orthoneura nitida, Sphaerophoria, Syrplius amcricanus, Xantho- 
gramma felix; Conop.: Myopa vesiculosa; Tachin.: Archytas analis, 
Gonia exul ab, Phorichaeta, Phyto; Sarcophafj.: Helieobia 4-sctosa ; 
Muse.: Phormia regina, Pscudopyrellia fcf ; Scatopha/j.: Seatophaga. 

Lepidoptera (1) — Noctu.: Plusia simplex. 

Salicaceae 

Populus deltoides (auemophilous). — One visitor observed, 
April 14. 

Long-tongued Bees (1) — Ap.: Apis c, ab. 

Populus tremuloides (auemophilous). — One visitor observed, 
April G. 

Long-tongued Bees (1) — Ap.: Apis c, ab. 

Salix amygdaloides. — Blooms April 4-May 9; 97 visitors ob- 
ser\'ed, April 10-2S; .Mis, Y, 

On staminatc flowers: 

Long-tongued Bees (4) — Ceratin.: Ceratina cT, Zaodontomerus 
(^; Nomad.: Ileminomada $, Nomada sayi (^. 

Short-tongued Bees (13) — Halict. ($) : Chloralictus illinoensis, 
Evylaeus arcuatus sc, fq, truncatus so, Oxystoglossa confusa sc; 
Sphecodini: Sphecodium cressonii; Collet.: Colletes inaoqualis (^ 
2, sc; Andren.: Andrena illinoensis <^ $, sc, fq, pruni $, .salicacea $, 
sc, salictaria $, sc, Opandrena personata <^, Trachandrena crataegi 
(^, nuda $, sc. 

Other Ilyraenoptera (2) — Vesp.: Vespula germanica; Pompil.: 
Cryptocheilus conicus. 

Diptera (8) — Syrph.: Chr>'sogaster Ontario, Ilclophilus lati- 
frons, Psilota, Tropidia mamillata, Xylota fraudulosa ; Empui.: 
Rhamphomyia irregularis; Boinhyli.: Bombylius major; Muse: 
Morellia. 

On staminatc and pistillate flowers: 

Long-tongued Bees (7) — Ap.: Apis sc. ab; .Sinmui.: <inathiaa 
cuneatus cT $. ^M. ovatus <^ 9. ^Q. Xomada denticulata cT ?. «l>. 
illinoensis ^^ $, ab, Phor <^, ab, Xanthidium luteolum (^ ?, fq. 



180 FLOWERS AND INSECTS— XXVI 

Short-tongued Bees (23) — Halict. ($) : Agapostemon radiatus, 
Chloralictus pilosus sc, fq, sparsus sc, ab, versatus se, ab, zephyrus 
sc, ab, Evylaeus foxii sc, ab, peetoralis sc, fq, Halictus lerouxii sc, 
ab, Odontalietus, Oxystoglossa pura, Seladonia sc, fq; Andren. 
(c?* ?) : Andrena dunningii, erythrogastra sc, ab, mandibularis sc, 
salicis sc, sayi fq, Opandrena cressonii sc, ab, in cop, miserabilis 
sc, ab, Parandrena sc, ab, Trachandrena claytoniae sc, fq, forbesii 
sc, fq, hippotes sc, fq, mariae sc, fq. 

Diptera (7) — Syrph.: Brachy palpus frontosus, Chilosia puuctu- 
lata, Sphaerophoria ; Empid:: Rhamphomyia limbata fq, priapulus 
fq ; Conop. : Myopa vesiculosa ab ; Muse. : Pseudopyrellia. 

On pistillate flowers: 

Long-tongued Bees (3) — Bomb.: Bombus americanorum 5; 
Megachil.: Osmia pumila ^ ; Nomad.: Nomada salicis (^, type. 

Short-tongued Bees (6) — Halict. ($) : Chloralictus cressonii, 
tegularis fq, Curtisapis forbesii; Andren. (J*) : Andrena carlini, 
erythronii, Trachandrena rugosa. 

Other Hymenoptera (5) — Vesp.: Vespula germanica; Pompil.: 
Cryptocheilus conicus; Ichneumon.: Glypta rufiscutellaris fq; 
Tenthredin.: Dolerus arvensis, Macrophya epinota, pleuricincta, 
Macroxyela. 

Diptera (18) — Syrph.: Eristalis dimidiatus, Melanostoma ob- 
scurum, Mesogramma marginata, Platychirus quadratus, Syrphus 
americanus, torvus; Empid.: Rhamphomyia gilvipilosa; Conop.: 
Myopa pilosa ab, in cop ; Tachin. : Gonia capitata, exul ; Sarcophag : 
Cynomyia; Anthomy.: Coenosia antennalis, Hyetodosia, Mydaea 
fusca, Phorbia acra, platura fq; Scatophag.: Scatophaga; Seps.: 
Sepsis. 

Coleoptera (1) — Chrysomel.: Orsodachna. 

Salix cordata (9: 76-7).— Blooms March 18-April 30; 123 
visitors observed, March 25-April 29 ; Mis, Y. 

On staminate flowers: 

Long-tongued Bees (6) — Megachil.: Osmia pumila J^ 5^ ^^j 
Nomad.: Nomada denticulata J*, ^t/pe, illinoensis (^ $, fq, type, sayi 
(^, Xanthidium luteoloides ^, luteolum <^ $, ab. 

Short-tongued Bees (16) — Halict. ($) : Augochlora viridula, 
Chloralictus illinoensis, tegularis, Odontalietus, Oxystoglossa con- 
fusa fq, similis type; Andren.: Andrena dunningii (^, erythro- 
gastra (^ ?, sc, ab, in cop, mandibularis J*, type, pruni J*, fq, 
salicacea J* $, fq, sayi ^f $ ab, in cop, Opandrena cressonii J* $, ab, 
dubia c?, type, Trachandrena hippotes J*, fq, nuda $. 



CHARLES HOhEHlSOS Its I 

Other Ilymenoptcra (5) — Vesp.: Polistfs rubijjinosus ; Vumpil.: 
Cryptofheilus conicus; Tinthndin.: Dolorus hieolor, NomatUH 
liiteoter«?um, vertebral us. 

Diptera (26) — t>imuli.: Simuliuin; iSi/r/v/i.; Brachyopa, Chal- 
eoinyia, Chrysogaster Ontario, Eristalis aeneu« ab, dimidiatuH ab, 
.Melanostoma obscuruin, Orthoneura pictipenni.s ab, Platychirus 
Jiyperboreus, Psilota, Sphaerophoria, Syritta, SyrphiLs torvuH, 
Tropidia mamillata, Xylota fraudulos^i ; Empid.: EmpiH otioKa, 
Ivliainpliomyia priapulus; Conop.: Myopa vesieulosa ; Tachin.: 
(Jonia exul ; Sarcopharj.: Helieobia 4-seto«i; Anthomy.: Ilyeto- 
dosia; Lonchai.: Loneliaea abcrrans, parvieomis; Oscin.: Klaehi- 
I)tera eostata ; Scioinyz.: Seioniyza, Tetaiioeera; Stps.: Proehyliza. 

Coleoptera (3) — Chrifsonul.: fJaleruca f(|. Lina ab; Oedimrr.: 
Asclera puncticoUis f(|. 

On staminatc and puitillalc fluwcrs: 

Lon{]:-ton(rued Bees (7) — Ap.: Apis sc, ab; Ceratin.: Ceratina 
(^, fq; Megachil.: Ceratosmia J*, ab; Nomad. {^ $) '■ Gnathias cune- 
atus ab, ovatiis ab, type, Nomada simplex fq, type, Phor integer 
ab. type. 

Short-tongued Bees (23) — Ilalict.: Agapostemon radiatus $. 
Chloralictus i)ilosu.s 9- fq< sparsus 5- «c, ab, vt rsatus $, ft\, zephyrus 
$, ab, Curtisapis forbesii 9, sc, Evylaeus areuatus $, foxii 5. «<*, ab, 
type, Ilalictus lerouxii $, fq, Paralietiis platyparius ^ ^. Seladonia 
$, f q ; Sphecodini: Sphecodes arvensis $, fij ; Collet.: Colletes in- 
aequalis ^, f q ; Andren. (^f $) : Andrena erythronii, illinoensis f(|, 
type, salicis sc, ab, in cop, type, salictaria sc, ab, in cop, type, 
Opandrena miserabilis ab, in cop, Parandrena ab, in cop, Trachand- 
rena claytoniae ab. forbesii f(|. niariaf se, ab. in eop, typr, 
ruposa iq. 

Other Ilynu'noptera (1) — Tenthrvdin.: Dolenis arvcnsis ab. 

Diptera (14) — Syrph.: Brachypalpus frontosus ab, rib'yi ab, 
Eristalis flavipes, Helophiliis sirnilis, Phityehirus quadratus ab, 
Syrphus amerieanus ab, Xylota fraudulc>sa ab; Empid.: Kham- 
phomyia pilvipilosa f(j, type; Conop.: Myopa pilosa f<| ; Tachin.: 
Gonia capitata ab; Sarcophag.: C'ynoniyia ab; Mu.tc: Pseudo- 
pyrellia ab; Anthomy.: Phorbia platura f q ; Sratophag.: Scato- 
phaga ab. 

Coleoptera (1) — Chrysomd.: Orsodadina ab. 

On pistill/ite flowers: 

Lonp-tonpued Bees [I)— Ceratin.: Zaodontomorus (^, T; 

Short-tonpued Bees (6, $) — Ifalict.: (Tiloralictus rrrssonii, 
pruinosus, testaceus type, Oxystoplos.sii pura; Sphecotlini: Dre- 
panium f q ; Andren.: Andrena carlini. 



182 FLOWERS AND INSECTS— XXVI 

Other Hymenoptera (1) — Vesp.: Polistes variatus. 

Diptera (11) — Syrph.: Eristalis transversus, Merapioidus; 
Tachin.: Euphorocera cinerea, claripennis, Panzeria, Tachina 
robusta; Sarcophag.: Calliphora erythrocephala ; Muse: Myospila, 
Pollenia; Oscin.: Oscinis coxendix; Seps.: Sepsis. 

Lepidoptera (1) — Nymphal.: Vanessa atalanta. 

Hemiptera (1) — Caps.: Lygus. 

Salix humilis (9: 77-8).— Blooms March 18-April 28; 67 vis- 
itors observed, March 21-April 21 ; Mis, Y. 

On staminate flowers: 

Long-tongued Bees (3) — Nomad.: Gnathias ovatus 5, Nomada 
sayi J* $, Xanthidium dentariae J*. 

Short-tongued Bees (13) — Halict. ($) : Chloralictus pilosus, 
pruinosus, sparsus, zephyrus, Evylaeus f oxii, Oxystoglossa confusa ; 
Andren.: Andrena illinoensis J*, mandibularis $, salicacea $, type, 
sayi J*, Trachandrena claytoniae <^ $, fq, hippotes $, mariae J^ $, sc. 

Other Hymenoptera (1) — Chrysid.: Holochrysis hilaris. 

Diptera (4) — Syrph.: Eristalis aenens, transversus, Ortho- 
neura nitida; Conop.: Myopa vesiculosa. 

Lepidoptera (1) — Nymphal.: Euvanessa. 

Coleoptera (2) — Coccinell.: Hippodamea parenthesis; Lampyr.: 
EUychnia. 

Hemiptera (2) — Caps.: Lygus ab; Pent at am.: Euschistus vari- 
olarius. 

On staminate and pistillate flowers: 

Long-tongued Bees (2) — Ap.: Apis sc, ab; Megachil.: Cera- 
tosmia J^. 

Short-tongued Bees (12) — Halict. (5) : Chloralictus versatus, 
fq, Curtisapis forbesii, Evylaeus arcuatus sc, fq, Halictus lerouxii 
ab ; Collet. : CoUetes inaequalis (^ $, ab ; Andren. : Andrena carlini 
J* 5' a^> erythrogastra; J*, erythronii J* $, fq, salicis J* $, sc, fq, 
Opandrena cressonii <^, fq, miserabilis J* % fq, Trachandrena for- 
besii ^ 5, fq. 

Diptera (12) — Syrph.: Brachy palpus frontosus ab, Eristalis 
dimidiatus ab, Helophilus similis ab, Sphaerophoria, Syrphus 
americanus; Tachin.: Gonia capitata ab; Sarcophag.: Cynomyia 
ab ; Muse. : Phormia regina, Pseudopyrellia ab ; Anthomy. : Phorbia 
platura ab; Scatophag.: Scatophaga ab; Seps.: Sepsis ab. 

Coleoptera (1) — Chrysomel.: Orsodachna ab. 

On pistillate flowers: 

Long-tongued Bees (2) — Boml).: Bombus impatiens $; Ceratin.: 
Ceratina <^, fq. 



LIIAHLES liUlit:iiTS().\ IsJ 

Short-tongued Bees (4) — Halict. ($) — Aguposteinon rudiatiw, 
Seladonia; Sphecodini : Sphecodes arvensLs; Atulnti.: Andrena 
illinoensis (^. 

Other Ilymenoptera (5) — Ichiuumon.: Colpoffiiathiw, Iclineu- 
moii funestus; Ttnthredin.: Dolerus arveiisis ab, bicolor ah, s»*riceua, 

Diptera (2) — Syrph.: Eristalis latifrons; Anthomy.: Ilyoto- 
dosia. 

Ileniiptrra (1) — Lyyae.: Lygaeus. 

Salix longifolia. — Blooms April 26-Aiigust 11; 11I> visiton 
observed on staniinate flowers, April 26-July 15; Mis, Y. 

Long-tongued Bees (10) — Ap.: Apis; Bomb.: Bombias auri- 
comus $, Bombus americanoruin ^; Ceratin.: Zaodontomeruii f^; 
Mcgachil.: Megachile mendica <^; Nomad.: Gnathias cuneatiw $, 
fq, ovatus (^ $, ab, Ileminomada cf $, fq, Ilolonomada superba (^, 
Nomada eressonii <^ $, dentieulata <^ 9» ^^1* illinoensis (^ $, f(|, sayi 
(^ $, fq, Phor (^ $, ab, Xanthidium luteoloides <^; Eucer.: Tetra- 
lonia dilecta $. 

Sliort-tongued Bees (43) — Ilalict.: Agapostemon radintus $, 
so, splendens $, Chloralictus eressonii $, nympliaearum $, pilosus 
<^ $, sparsus $, se, fq, tegularis $, sc, versatus 9, sc, f<\, zephyruK 
(^ $, sc, fq, Curtisapis forbesii cT $» ^Q. Evylaeus areuatus 9, 8C, 
foxii 9» sc, fq, pectoralis $, truncatus (^ $, Ilalictus lerouxii $, sc, 
Odontalictus $, sc, Oxystoglossa confusa cT $. pwa $, similis $, sc, 
Seladonia $, sc ; Sphecodini : Sphecodes arvensis $, minor $, Sphe- 
codium eressonii $; Prosopid.: Prosopis illinoensis 9. ^Q. pygmaea 
cf, ziziae $; Collet.: Colletes eulophi cT. inaequalis 9, sc; ilnJrfn.: 
Andrena carlini $, erythrogastra c? 9, sc, ab, illinoensis 9. sc. ^Q. 
macoupinensis 9, mandibularis 9, salictaria 9. sc, sayi 9. Opandrena 
eressonii <^ 9. sc, fq. miserabilis (^ 9» sc, personata <^, Parandrena 
(^ 9» sc, ab, Trachandrena claytoniae <^ 9. crataegi (^, hippotes 9i 
sc, ab, mariae (^ 9» sc, fq. 

Other Ilymenoptera (10) — Sphec: Sphex nigricans; ScoU.: 
Elis 5-cincta; Philanlh.: Cerccris finitima, Philanthus punctatus 
fq; Vesp.: Polistes pallipes, variatus; Crabron.: Lindenius errans; 
Orybel.: Notoglossa frontalis, Oxybelus packardii; /. /m. umi-m ; 
Pimpla notanda. 

Diptera (47) — Bibion.: Bibio femoratus, pallip* . . .* . 

Simulium; Taban.: Chrysops striatus; Stratiomy.: Xemotehw; 
Syrph.: Allograpta, Baccha aurinota, Chilosia capillata, pimctu- 
lata, Chrjsochlamys, Chrysogastrr nigripes. Eristalis dimidiatus 
fq, Helophilus similis, Melanostoma ol>srunim, Mesogramma gemi- 
nata fq, marginata, Orthoneura nitida, ParagiLs bieolor. Pipiza 



184 FLOWERS AND INSECTS— XXVI 

pulcliella, Platychirus quadrafus, Spliaerophoria fq, Syritta, 
Syrphus americanus; Empid.: Empis avida, distans, Parempis, 
Rhamphomyia limbata fq, priapulus fq, Tachydromia ; Bomhyli.: 
Bombylius major; Conop.: Myopa pilosa, vesiculosa, Zodion fulvi- 
frons; Tachin.: Euphorocera claripennis, Gonia capitata, Linnae- 
myia, Peleteria, Phorantha humeralis ; SarcopJiag. : Cynomyia f q, 
Helicobia helicis, Sarcophaga cimbicis, sinuata; Muse: Pseudo- 
pyrellia; Anfhomy.: Coenosia 'antiea, Phorbia platura fq; Ortal.: 
Chaetopsis; Scatophag.: Scatophaga. 

Lepidoptera (1) — Lycaen.: Eupsyche. 

Coleoptera (2, fq) — Chrysomel.: Diabrotica vittata; Coccinell.: 
Megilla in cop. 

Salix nigra. — Blooms April 22-May 29; 97 visitors observed, 
April 22-May 29 ; Mis, Y. 

On staminate flowers: 

Long-tongued Bees (14) — Ap.: Apis sc, fq; Bomh.: Bombias 
separatus $, Bombus americanorum $; Ceratin.: Ceratina J*, 
Zaodontomerus <^; Megachil.: Ceratosmia $, sc; Nomad.: Gnathias 
cuneatus J^ $, fq, ovatus J* $, fq, Heminomada J* $, fq, Nomada 
cressonii <^ $, denticulata J* $, illinoensis J* $, fq, sayi ^ % 
Phor $. 

Short-tongued Bees (43) — Halict. (?) : — Agapostemon radi- 
atus sc, Augochlora viridula, Chloralictus pilosus sc, fq, pruinosus 
sc, sparsus sc, ab, tegularis sc, versatus sc, ab, zephyrus sc, ab, 
Curtisapis forbesii sc, Evylaeus arcuatus sc, foxii sc, fq, pectoralis 
sc, 4-maculatus, Halictus lerouxii sc, Odontalictus sc, Oxystoglossa 
conf usa sc, f q, similis f q, Paralictus cephalicus, Seladonia sc ; Sphe- 
codini: Machaeris stygia; Collet.: Colletes inaequalis 5; Andren.: 
Andrena carlini ?, dunningii 5, sc, erythrogastra (^ ?, sc, ab, illino- 
ensis ^ 5, sc, fq, macoupinensis ?, sc, type, mandibularis $, sc, 
nigrae $, sc, type, salicis $, sc, salictaria (^ $, sc, fq, sayi (^ $, sc, fq, 
Opandrena cressonii ^ ?, sc, ab, dubia J^, miserabilis (^ $, sc, ab, 
personata <^, Parandrena (j^ ?, sc, ab, Trachandrena claytoniae $, 
sc, crataegi (^ $, sc, ab, forbesii J*, heraclei 5, sc, hippotes $, sc, 
nuda 5, sc, rugosa $, sc. 

Other Hymenoptera (3) — Eumen.: Ancistrocerus tigris; 
Chrysid.: Holochrysis hilaris; Bracon.: Microdus fq. 

Diptera (32) — Bibion.: Bibio albipennis, pallipes; Syrph.: Allo- 
grapta, Chilosia capillata, punctulata, Chrysogaster nigripes, Eris- 
talis aeneus, dimidiatus, Helophilus similis, Mesogramma marginata, 
Psilota, Sphaerophoria, Syritta, Syrphus americanus, ribesii ; 
Empid.: Rhamphomyia limbata, priapulus fq, sordida; Bomhyli.: 



CHAHLKS HUbEHlSUS l»o 

Bonibylius major; Conop.: Myopa pilosii f<j, vesiculowi U\, Zoiliuii 
fulvifions; Tachin.: Archytas aiialis, (iyinnoKOiua, IIyiH>sti*na 
dunningii, Linnaeinyia, Siphona ; Sarcophay.: Cynoinyia ; Muse: 
Lucilia sylvarum, Pseudopyrellia ; Anthomy.: Phorbia platura fq; 
Scatopkag.: Scatophapa. 

Lopidoptcra (2) — A'lfviphttl.: Vanessa Imiitfra; I'upiliun.: 
Euryimis. 

Coleoptera (3) — (% rambyc.: Moloirlius; Chrysomti: Dialirotica 
vittata; Lampyr.: Ellyclinia. 

1SaNTAI>A( KAI. 

Comandra umbellata (BioO-l). — Blooms April 18-Junp 6; 44 
visitoi-s obscned, May 1-23; Pol, W. 

Long-tonf?ued Bees (4) — Ap.: Apis; Mcyarhil.: Osmia pumila 
5; Nomad.: Ilolonomada superba (^ 5; Eurer.: Tetralonia dilecta ^. 

Short-tonpued Bees (8, $) — Ilalict.: Chloral ictus albiiM'nnis, 
tegularis, versiitus, Ilalictus Icrouxii, Splipcodiiii : Sphccodcs arvm- 
sis; Andrcn.: Andrcna sayi, Opandrena miserabilis, Tracliandn-na 
mariae. 

Dii)tera (2S) — Straliomy.: Odoiitoinyia piilM'sccns. Stratiomyia 
quaternaria; Syrph.: Eristalis dimidiatiis, Hclophilus latifrons. 
Sphaerophoria ab, Syritta, Tropidia mamillata, Volucolla vesi- 
culosa; Tachin.: Gonia capitata, Peleteria, Tacliina robusta ; 
Sarcophay: Boettcheria, Calliphora crythrocephala f(i, vomitoria, 
Cynomyia ab, Sarcophaga cimbicis ab, sinuata; Muse: Grapho- 
myia, Lucilia caesar ab, sericata fq, sylvarum ab, Myospila, Phormia 
regina fq, Pseudopyrellia; Anthomy.: Coenosia antica. Limnophora 
ab, Phorbia platura ab; Sciomyz.: Seiomyza. 

Lei)idoptera (2) — Lycacn.: Uranotes; Papdion.: Ipliiclides. 

Coleoptera (2) — CoccincU.: Mepjilln ; Lumjiyr.: Tcjcphorus 
bilineatus. 

Sapindackak 

Aesculus glabra fl6: 160).— Blooms A|)ril 7 May 18; 9 visitom 
observed Ai»ril 21-May 11 ; Ma, Y. 

Long-tongued Bees (9)— Bomb. ($) : Bombias aurieomus f<|. 
separatus, Bombus americanorum fq, impatiens; Megachil.: Ccn- 
trosmia <^ $, sc, fq, Osmia cordata cT; Eucer.: Tetralonia b««lfragpi 
c^ 9. ST. ff|. in cop, dilecta $; Anihophor.: Anthophora $, hc. 

Aesculus hippocastanum (cult 16 ir)^.— Eight visitorii ob- 
sened. May 29; Ma. W. 

Birds (\) — Trnchd.: Troehilu^ 



186 FLOWEES AND INSECTS— XXVI 

Long-tongued Bees (7) — Bomd. (?) : Bombias auricomus ab, 
scutellaris, separatus ab, Bombus americanorum ab, impatiens ab; 
Eucer. : Tetralonia dilecta (^ ^, ab ; Anthophor. : Anthemoessa J*. 

Saxifragaceae 

Heuchera hispida (5 : 178-9) . — Blooms May 4- July 4 ; 6 visitors 
observed. May 8-June 23 ; Mi, Y. 

Long-tongued Bees (1) — Bomb.: Bombus americanorum $. 

Short-tongued Bees (5) — Halict. ($) : Chloralictus pruinosus, 
versatus sc, fq, Oxystoglossa confusa sc, similis sc, fq; Collet.: 
Colletes aestivalis J* $, sc, ab, oligolege. 

Hydrangea arborescens (5: 269-70). — Blooms June 21-August 
2 ; 34 visitors observed, June 27, 30 ; Mis, W. 

Long-tongued Bees (4) — Boml.: Bombias separatus ^, c, ab, 
Bombus americanorum $, c; Ceratin.: Ceratina $, sc; MegachiL: 
Neotrypetes truncatus .$, c. 

Short-tongued Bees (8) — Halict.: Chloralictus sparsus $, sc, 
ab, versatus 5, sc, ab, Evylaeus arcuatus $, sc, pectoralis <^ $, sc, 
truncatus $, sc, Oxystoglossa pura $, sc, Seladonia $, c ; Prosopid. : 
Prosopis ziziae J* $, sf, ab. 

Other Hymenoptera (1) — Crahron.: Solenius. 

Diptera (14) — Syrph. (sf) : AUograpta, Eristalis tenax, Meso- 
gramma geminata, Paragus tibialis, Sphaerophoria, Syritta, Syr- 
phus ^mericanus; Empid.: Parempis ab; Conop.: Oneomyia fq, 
Stylogaster biannulata; Tachin.: Archytas analis; Muse: Grapho- 
myia, Musea, Pseudopyrellia. 

Lepidoptera (2) — Hesperi.: Epargyreus; Pyromorph.: Har- 
risina. 

Coleoptera (5) — Ceramhyc: Euderces sf, Typocerus velutinus; 
Mordell.: Mordella marginata ab, Mordellistena ornata, pubes- 
cens ab. 

Philadelphus grandiflorus (cult, 5:270). — Twenty-one species 
and 160 individuals ; May 29-June 26 ; Mi, W. 

Long-tongued Bees (2:67) — Bomb.: Bombus americanorum 
% 1 ; Megachil. : Prochelostoma philadelphi J* $, sc, in cop, 66, type. 

Short-tongued Bees (8:58, $) — Halict.: Chloralictus sparsus 
sc, 32, versatus sc, 5, zephyrus 1 ; Prosopid. : Prosopis ziziae 2 ; 
Andren.: Opandrena cressonii sc, 1, personata 4, Trachandrena 
claytoniae sc, 9, crataegi sc, 4. 

Other Hymenoptera (2:4) — Eumen.: Ancistrocerus tigris 1, 
Leionotus foraminatus 3. 



CHARLES ROBERTSON 187 

Diptera (8:27) — Bihion.: Dilophus obesulus 2; Muse: Lucilia 
caesar 1, sericata 1, Polleuia 2, Pseudopyrellia 2; Anthomy.: Limuo- 
phora 1, Phorbia acra 17, platura 1. 

Lepidoptcra (2:4) — Papilujn.: .Tasdniaili-s 1; If.^n.ri- F,i>!ir- 
gyreus 3. 

Ribes gracile (5:27l)-l). — Blooms ilarch 30-May 16; 38 vis- 
itors observeil, April 4-29; Ma, W. 

Lon<r-tongii('d Bees (18) — Ap.: Apis sc, ab, n; Bomb. (9): 
Bombias aurieomus ab, separatiis, Bonibus americanorum ab, con- 
similis, impatiens ab, ridingsii; Mcgachil. {(^, n) : Ceratosmia, 
Osmia pumila ; Nomad, (n) ; Gnathias cuneatus (^, ovatus<^, Nomada 
denticulate (^, illinoensis (^, sayi (^ $, Xanthidiuin lutcoloid«'s (^, 
luteolum (^ $, f(i; Eucvr.: Tctralonia diU'cta ^T, ab; Anthophor.: 
Anthophora <^. 

Short-toiifjued Bees (17, n) — Ilalict. ($) : Agapostemon radia- 
tus, Augochlora viridula, Chloralietus caeruleus, ert'ssonii, sparsus 
sc, zephyrus, Curtisapis coriacea, Evylaeus foxii sf, ab, Ilalictiu 
lerouxii sf, Oxystofjlossa confusa; Collet.: Colletes aestivalis <^ $; 
Andren.: Andrena carliiii $. dunningii <^, pruni (^ 9, fq, in cop, 
sayi cT $. ab> Traehandrena claytoniae <^, rugosa (^. 

Diptera (1) — Bombyli.: Bombylius major n. 

Lepidoptera (2) — Lycaen.: Cyaniris n; Papilion.: Iphiclides. 

SCROPHULARIACEAE 

Castilleja coccinea (13: 598).— Blooms April 27-June 10; 1 
visitor obscncd, May 5, 19; Ma (0), R. 
Birds {\)—Trochxl.: Trochilus. 

Collinsia verna (13 : 588-90).— Blooms April 21-June 1; 26 
\'isitors observed, April 21-May 8; ^la, R. 

Long-tongued Bees (18) — Ap.: Apis sc, ab; Bomb. (J): Bom- 
bias aurieomus, scutellaris, separatus, Bombus americanorum, im- 
patiens, ridingsii; Ccratin.: Ceratina cT 9. ^'l< Zaodontomerus q ; 
Megachil. (cT $, sc) : Ceratosmia ab, Diceratosmia ab, Osmia atri- 
ventris ab, collinsiae fq, type, pumila ab; Somad.: Nomada sayi 9; 
Eucer.: Tetralonia belfragei (^ $, fq, dilecta cf ; Anthophor.: Antho- 
phora c^ $. 

Short-tongued Bees (1) — Ealict.: Halictus lerouxii 9, c. 

Diptera (3) — Empid.: Empis nuda, otiosa; Bombyli.: Bomby- 
lius major. 

Lepidoptera (4, n) — Papilion.: Eurynius; Iltxpcri.: Thnnao« 
brizo, icelus, persius. 



188 FLOWERS AND INSECTS— XXVI 

Gerardia auriculata (13:597). — Blooms August 26-September 
28 ; 7 visitors observed, August 30-September 12 ; Ma, R. 

Long-tongued Bees (6) — Ap.: Apis; Bomb. ($) : Bombias 
auricomus, Bombus americanorum sc, ab, impatiens sc ; Eucer. : 
Melissodes boltoniae $, c ; Megachil. : Megachile brevis $, sc. 

Short-tongued Bees (1) — Halict.: Chloralictus versatus $, 
esp. 

Gerardia grandiflora (13 : 594-5).— Blooms July 29-September 
20 ; 11 visitors observed, August 8-September 14 ; Ma, Y. 

Birds (1) — Trochil.: Trochilus. 

Long-tongued Bees (7) — Boml.: Bombias auricomus ^, c, sep- 
aratus ^, e, Bombus americanorum cf $ ^, sc, ab, consimilis ^, 
impatiens ^, sc; Megachil.: Megachile mendica $, c; Eucer.: 
Melissodes bimaculata (^ $, sc. 

Short-tongued Bees (2, $> n) : Halict.: Chloralictus versatus 
csp, Curtisapis forbesii $, c. 

Diptera (1) — Syrph.: Pipiza nigribarba f, n. 

Gerardia purpurea (13:595-6). — Blooms August 30-Septem- 
ber 29 ; 5 visitors observed, September 4-26 ; Ma, R. 

Long-tongued Bees (5, sc) — Bomh.: Bombus americanorum (^ 
$ ^, ab, impatiens $; Megachil.: Megachile brevis $; Eucer.: 
Melissodes boltoniae $, nivea $. 

^ Gerardia tenuifolia (13 : 596-7).— Blooms August 19-October 
16 ; 17 visitors observed, August 26-September 23 ; Ma, R. 

Long-tongued Bees (10) — Ap.: Apis sc, ab ; Bomb, (sc) : Bom- 
bias scutellaris ^, separatus ^, Bombus americanorum $ $, ab, 
impatiens b, ab; Ceratin.: Ceratina $; Eucer.: Melissodes boltoniae 
$, c; Megachil. (5): Megachile brevis sc and cutting petals, fq, 
mendica c, Xanthosarus c. 

Short-tongued Bees (3) — Halict.: Chloralictus versatus $, csp, 
n, Oxystoglossa confusa J', n; Panurg.: Calliopsis andreniformis 
(^ 2, sc, ab, in cop. 

Diptera (1) — Syrph.: Syrphus americanus fsp, n. 

Lepidoptera (2, n) — Papilion.: Eurymus, Pieris. 

Coleoptera (1) — Melo.: Pyrota mylabrina gn, n. 

Gratiola virginiana (13 : 592).— Blooms May 11-July 17; 1 vis- 
itor observed, June 2 ; Mi, W. 

Short-tongued Bees (1) — Halict.: Chloralictus versatus 5, sc, ab. 

Ilysanthes dubia. — Blooms June 19-September 1 ; 10 species 
and 18 individuals observed, July 31, August 3, 5, 6 ; Mi, W. 



CllAULKS liUliElilSOS 189 

Short-tongued Bees (5:12) — Halict.: I'hloralietus obsourus 9. 
1, pilosus cT $, -. sparsiis J, sc, 1, versatus 9, ^i". " ; Vanunj.: Calliup- 
sis aiulreniformis 9» 1- 

Lepidoptera (5:(i) — Lycatn.: Evcrcs 1; l'ii}>Uwn.: Eurfiua 2, 
Eurymus 1; llesprri.: Aiieyloxyplia 1, IMiolisora liayhurtitii 1. 

Linaria vulgaris (int, 13 : ^S') ).- Blooms May l()ctolnr 24 ; 12 
\isitoi-s (ihserved, June 2r>-()ctober 10; Ma, ^'. 

Lonj?-ton«;ued Bees (6) — Ap.: Apis sc, ii ; liomb.: Bombus 
amerieanorum cf $ $, sc, ab, consimilis <^, iinpatiens 5. sc; Me- 
ijaihil.: Alcidaniea simplex $, sc, n, Mepaehile brevis 9. c, ii. 

IShort-tonjjued Bees (1) — Halict.: Apapostemon viridulus $, n. 

Lepidoptera (5, n) — Nymphal.: Vanessa cardui ; Papilion.: 
Eurymus. Picris; Ilespfri.: Limochores taunias, Thanaos juvenali«. 

Mimulus alatus (8: 14S). — Blooms July l.'J-Septcmher ;'» ; 1 vis- 
itor observed, Aujrust 'A; Ma, R. 

Lon«r-ton}rued Bees (1) — Bomb.: Bombus amerieanorum v- 

Mimulus ringcns (8:147-8). — Blooms July 11-September 7; 
2 visitors obsened, August 1. 13; Ma, R. 

Lon«;-ton<;ucd Bees (2) — Bomb.: Bombus amerieanonim 9 5» 
consimilis $. 

Pentstemon hirsutus (13 : r)91-2 ).— Blooms May 1-Jutio 7: 27 
visitoi-s obsorveil. May l-»June 3; Ma, W. 

Lonfr-tonprued Bees (21) — Bomb. ($) : Bombias auricomus fq, 
separatus, Bombus amerif*anorum U\, consimilis, impatiens; 
Cerntin.: Ceratina 9; Megachil.: Alcidamea simplex (^ 9» '*c, fq, 
Centrosmia $, sc, Ceratosmia $, Osmia atriventris ^ $, sc, fq, eol- 
linsiae $, cordata cT $. ^c, fq, distincta $, sc, fq, pumila 9. ««. 'q; 
Nomad.: Holonomada afFabilis $; Mrlect.: Bombomelecta $; Eucer. 
(fq) ; Tetralonia belfrapei <^ 9» ^c, dilecta <^ 9. »" coP. rosea (^; 
Anfhophor.: Anthemoessa cf, ab, Anthophora cT ?. ^< f'l- 

Otber Ilymenoptera (1) — Eumtn.: Leionotus foraminatus, i)er- 
forating. 

Diptera (1) — Bombyli.: Bombylitis atriceps. 

Lepidoptera (4, n) — Papilion.: Hfraclides. IjnTtias. Papilio; 
II(s})tri.: Atrytone zabidon. 

Pentstemon laevigatus ( 13: 590-1).— Blooms May IH-July 9; 
:10 visitoi-s obs«r\e«l, May 2H-June 26 ; Ma. W. 

Birds {\)—Trochil.: Trocbilus. 

Long-tonpued Bees (17) — Ap.: Apis; Bomb.: Bombias auri- 
comus 9. Bombus amerieanorum 9 ?• consimilis 9. impatienn 9; 



190 FLOWERS AND INSECTS— XXVI 

Ceratin.: Ceratina $, c, n; Megachil.: Osmiini: Alcidamea simplex 
J* $, sc, ab, Monilosmia ?, Osmia distincta $, sc, fq, pumila $; 
Megachilini : Cyphopyga <^ $, Megachile brevis $ ; Eucer. ((^ $, fq) : 
Tetralonia dilecta, rosae; Anthophor. (sc) : Antbemoessa (^ $, 
fq, Antbopbora $, fq, Clisodon $. 

Sbort-tongued Bees (5) — Halict. ($, c, n) : Agapostemon viridu- 
lus, Cbloralictus pilosus, pruinosus, versatus, Curtisapis coriacea. 

Otber Hymenoptera (2, n) — Eumen.: Leionotus foraminatus, 
perforating, anormis, at boles. 

Diptera (1) — Syrph.: Mesogramma marginata fsp, n. 

Lepidoptera (3, n) — Papilion.: Eupboeades, Eurymus; Sphing.: 
Deilepbila. 

Coleoptera (1) — Scardbae.: Tricbius piger f, n. 

Scrophularia marilandica (13:586-8). — Blooms July 8-Octo- 
ber 26 ; 39 visitors observed, July 12-September 19 ; Mi, R. 

Birds (1) — Trochil.: Troebilus fq. 

Long-tongued Bees (7) — Ap.: Apis ab; Bomb.: Bombus con- 
similis ^ ^, ab, impatiens ^, sc, ab ; Ceratin. : Ceratina $ ; Megachil.: 
Antbemois J*, Cypbopyga $; Eucer.: Melissodes bimaeulata 

Sbort-tongued Bees (9) — Halict.: Agapostemon viridulus (^, 
Augocblora viridula (^, Cbloralictus sparsus J* 5, fq, versatus J* 5> 
sc, ab, zepbyrus J* $, ab, Curtisapis coriacea J* ?, sc, Halictus le- 
rouxii 2, sc, Oxystoglossa confusa J* $, sc, fq, Seladonia J^ $ sc. 

Otber Hymenoptera (17) — Sphec: Spbex vulgaris; Philanth.: 
Pbilantbus punctatus; Vesp.: Polistes annularis, pallipes, rubigi- 
nosus, variatus, Vespula cuneata, germanica ab, maculata ab; 
Eumen. : Ancistrocerus campestris, Eumenes f raternus f q, Leionotus 
anormis, foraminatus, scropbulariae, ziziae, Monobia, Zetbus. 

Diptera (3) — Syrph. (f, n) : Mesogramma marginata, polita; 
Tachin.: Sipbona. 

Lepidoptera (2) — Lycaen.: Everes; Ctenuch.: Scepsis. 

August 6, 14, tbe following 8 species and 26 individuals were 
taken on tbe flowers : — 

Sbort-tongued Bees (3:21) — Halict.: Cbloralictus sparsus 5, 
versatus 7, zepbyrus 9. 

Otber Hymenoptera (4:4) — Vesp.: Polistes annularis 1, pal- 
lipes 1, variatus 1, Vespula maculata 1. 

Diptera (1) — Tachin.: Sipbona 1. 

Seymeria macrophylla (13:593-4). — Blooms July 13- August 
22 ; 9 visitors observed, July 28-August 8 ; Ma, Y. 



CHARLES liUBEiasuS I'Jl 

Long-tongued Bees (6) — Ap.: Apis; liomh. ($) : Bombus anuT- 
icanorum se, ab, consimilis sc, ab, impatieus, ridingsii hc; Eucer.: 
Melissodes bimaculata (^. 

Diptera (1) — Sxjrph.: Milesia f, n. 

Lepidoptera (2, n) — Papilion.: Pii-ris; Iltsptri.: Atrytone 
zabulon fcj. 

Verbascum thapsus (inf, 13 : r)83-4).— Blooms Juno 4-()etobcr 
26; 16 visitoi-s observed, June 27-August 15; Ma, Y, 

Long-tongued Bees (3) — Ap.: Apis c; Bomb. (5): Borabua 
americanorum e, consimilis sc. 

Short-tongued Bees (6) — Halict. ($, c) : Agaposteraon viridulua, 
Augochlora viridula, Chloralictus cressonii, venuitus, Curtisapia 
coriacea, Evylaeus pectoralis. 

Diptera (7, f, n) — Syrph.: Allograpta, Mesogramma geminata, 
marginata, Pipiza nigribarba, Syritta, Syrphus americanus; 
Anthomy.: Phorbia platura. 

Veronica arvensis (int). — Blooms April 12-June 12; 3 visitors 
obsened, .May 3, 19; Mi, R. 

Short-tongued Bees (2) — Halict. ($) : Chloralictus versatuB 3, 
Oxystoglossa similis 1. 

Diptera (1) — Syrph.: Mesogramma marginata 4. 

Veronica peregrina. — Blooms April O-June 20; 13 visitors ob- 
served, May 3-8 ; Mi, W. 

Short-tongued Bees (8, $) — Halict.: Chloralictus pilosus, pru- 
inosus, sparsus, versatus fq, zephyrus, Oxystoglossa similis fq, 
Seladonia fq; Andren.: Opandrena cressonii. 

Diptera (4) — Syrph.: Mesogramma marginata, Sphaerophoria ; 
Anthomy.: Phorbia acra ; Oscin.: Oscinis soror. 

Hemiptera (1) — Corimelaen.: Corimelaena pulicaria. 

Veronica virginica (13: 592-3).— Blooms June 20- August 27; 
42 ^^sitors ob.ser^ed, July 7-August 11; Mis, W. 

Long-tongued Bees (9) — Ap.: Apis ab; Bomb. (5): Bombas 
americanorum, consimilis; Ceratin.: Ceratina 9» *c; MegackU.: 
Trypetini: Xeotrypetes truncatus $, c; Osmiini : Alcidamea sim- 
plex $, Hoplitis $, sc; Coelioxyini: Coelioxys 8-dentat« ($, fq; 
Eucer.: Melissodes bimaculata (^ $, fq. 

Short-tongued Bees (13)— Halict.: Agapostemon texanus <^, 
viridulus (^ $, Augochlora fer\'ida $, Chloralictus pilosus (^, sparaiu 
$, c, versatus 9, sc, fq, Curti-sapis coriacea $, c, Odontalictus ?. 
Seladonia (^ $; ProsopiiL: Prosopis pygmaea $, riziae $. 



192 FLOWERS AND INSECTS— XXVI 

Other Hymenoptera (4) — Sphec: Ammobia iehneumonea, 
Sphex nigricans, procera ; Bemhic. : Stictia. 

Diptera (8) — Syrph.: Eristalis aeneus sf, tenax sf, transversus 
f, n, Mesogramma marginata f, n, Syritta; Bomhyli.: Exoprosopa 
fasciata; Conop.: Oncomyia; Tachin.: Archytas analis. 

Lepidoptera (7) — Nymphal.: Vanessa huntera; Lycaen.: Chry- 
sophanus, Everes; Papilion.: Pieris; Ctenuch.: Scepsis; Pyraust.: 
Loxostege, Nomophila. 

Hemiptera (1) — Lygae.: Lygaeus. 

SOLANACEAE 

Datura stramonium (int). — Blooms June 4r-October 26; 2 vis- 
itors observed, June 25, 27 ; Ma, W. 

Lepidoptera (2) — Sphing.: Philampelus, Protoparce. 

Datura tatula (int, 13: 582).— Blooms May 26-October 28; 10 
visitors observed, July 13-October 28 ; Ma, W. 

Birds (1)— TrocM.: Trochilus. 

Long-tongued Bees (1) — Ap.: Apis c, ab, n. 

Short-tongued Bees (1) — Halict.: Chloralictus versatus $, c, n. 

Diptera (4, f, n) — Syrph.: Allograpta, Mesogramma marginata, 
Rhingia, Syrphus ribesii. 

Lepidoptera (2) — Sphing.: Deilephila, Protoparce. 

Coleoptera (1) — Chrysomel.: Diabrotica 12-puctata f, n. 

Physalis lanceolata (8: 146).— Blooms May 12-October 3; 5 
visitors observed. May 12-September 29 ; Mi, Y. 

Long-tongued Bees (1) — Anthophor. Anthophora $. 

Short-tongued Bees (4) — Halict.: Chloralictus versatus 5, c; 
Collet.: CoUetes latitarsis ^ $, sc, ab; willistonii, J* $, sc, fq, type; 
Panurg. : Zaperdita J* $, sc, ab. 

Physalis subglabrata (8: 146-7).— Blooms July 12-September 
27 ; 1 visitor observed, July 27 ; Mi, Y. 

Short-tongued Bees (1) — Collet.: Colletes latitarsis $, sc. 

Physalis virginiana (8:146). — Blooms June 7-October 4; 5 
visitors observed, June 19-August 1 ; Mi, Y. 

Short-tongued Bees (5) — Halict. (J, sc) : Evylaeus pectinatus, 
Oxystoglossa confusa ; Collet. : Colletes latitarsis J* 5, sc, ab, type, 
willistonii $, sc; Panurg.: Zaperdita J* $, sc. 

Solanum carolinense (13:582). — Blooms June 4-October 7; 3 
visitors observed, June 25-August 29 ; Ma, W. 

Long-tongued Bees (3, ^, c) — Bomb.: Bombias scutellaris. Bom- 
bus americanorum, impatiens. 



CHARLES liOBERTSOX 193 

Solanum nigrum (13: 582).— Blooms June C-October 20; 2 vis- 
itoi-s observed, Au^'ust 29, September :>; Ma, W. 

Long-tongued Bei's (2, $, e) — Bomb.: Bombus americauorum, 
impatiens. 

Solanum rostratum (int). — Blooms July 9-Oetober 4; 1 visitor 
observed, July 2:]; Ma, Y. 

Long-tongued Bees (1) — Bomb.: Bombus americanorum ^, c. 

Staphyli-lvckak 

Staphylea trifolia (14: 302-3).— Blooms April 23-May 12; 21 
visitoi-s observed, April 2:^:May 11; Mi, W. 

Long-tongued Bees (4) — Ap.: Apis so, ab; Bumb. ($, ab) : 
Bombus amerieanorum. eonsimilis, imi)atiens. 

Short-tongue Bees (!)) — Ilalict. ($) : Curtisaj)is eoriacca, 
Evylaeus 4-maculatus, Scladonia; Collet.: Colletes inaequalis ^T; 
Andren.: Andrena mandibularis 9, pruni $, sc, sayi <^ $, f(i, in cop, 
fijpc, Opandrena miserabilis $, Trachandrena nuda $, type. 

Other Hymenoptera (1) — Vesp.: Vespnla maculata. 

Diptera (4) — Syrph.: Eri.stalis flavii)es f ; Empid.: Empis otiosa 
ab, Pachymeria; Bombyli.: Bombylius major. 

Lepidoptera (1) — Hespcri.: Thanaos juvenalis. 

Coleoptera (2) — Cerambyc.: Molorehus; Scarabae.: Euphoria 
sepulchralis. 

Ilemiptera (1) — Caps.: Lygus. 

TlIYMKI^EACEAE 

Dirca palustris (9 : 7;3-4).— Blooms March 18-April 30; 11 vis- 
itors obsened, March 21; ^li, Y. 

Long-tongued Bees (4, (^) — Ceratin.: Ceratina, Zaodontomcrus ; 
Mcgachil.: Ceratosmia; Nomad.: Gnathias cuneatus. 

Short-tongucd Bees (6) — Ilalict. ($) : Chloralictus .smilacinae, 
versatus, zephyrus, Oxystoglossa pura; Collet.: Colletes inac(|ualis 
(^; Andren.: Trachandrena rugosa (^. 

Lepidoptera (1) — Nymphal.: Euvanessa. 

TiLIACEAE 

Tilia americana.— Blooms June 4-July 12; 20 species and 130 
individuals observed, July 2, 6, 7; Mi, Y. 

Lonp-tongued Bees (2:37) — Ap.: Apis 36; Bomb.: Bombus 
americanorum 5, 1. 

Short-tongued Bees {U. 61)— Ilalict.: Augochlora viriduU <f 
$, 8, Chloralictus illinoensis $, 1, sparsus <^ $, hc, 22. versatus $, 4, 
zephyrus $, sc, 12, Curtisapis eoriacca $, sc, 1, forbesii $, 2, Evylaeus 



194 FLOWERS AND INSECTS— XXVI 

peetoralis J* 5? ^j Halictus lerouxii 5, 1, Oxystoglossa confusa J, 1. 

Other Hymenoptera (3:3) — Sphec: Ammobia ichneumonea 1; 
Scoli.: Elis 5-cincta 1; Eumen.: Leionotus foraminatus 1. 

Diptera (11:27) — Syrph.: Allograpta 2, Orthoneura nitida 1, 
Syrphus americanus 2; Tachin.: Archytas aterrima 1, Peleteria 1; 
Sarcophag. : Calliphora erythrocephala 1 ; Muse. : Graphomyia 1, 
Lucilia caesar 4, Phormia regina 1, Pseudopyrellia 11; Anthomy,: 
Phorbia acra 2. 

Lepidoptera (1:1) — Ctenuch.: Scepsis 1. 

Coleoptera (1:1) — Malach.: Anthocomus 1. 

Umbelliferae 

Anethum graveolens (Mis, Y: cult).— July 12-16, 1920, 1000 
individuals taken on the flowers showed: 

Long-tongued Bees (2) — Ap. 1, Megachil. 1. 

Short-tongued Bees {6S5)—Halict. ^ $, mostly ? sc, 585, Pro- 
sopid. ^ ?, 50. 

Other Hymenoptera (43) — Oxydel. 19, Cercer. 12, Scoli. 4, 
Bracon. 3, Larr. 2, Eumen. 1, Nysson. 1, Sphec. 1. 

Diptera (292) — Syrph. 246, Muse. 27, Sarcophag. 7, Anthomy. 
4, Tachin. 4, Oscin. 2, Mycetophil. 1, Seps. 1. 

Hemiptera (25) — Caps. 

Coleoptera (3)— Fam.? 1, Mordell. 2. 

Chaerophyllum procumbens (12:459-60). — Blooms April 6- 
May 26 ; 49 visitors observed, April 16-May 4 ; Pol, W. 

Long-tongued Bees (4) — Megachil.: Ceratosmia 5, Osmia pumila 
$, Nomad.: Heminomada <^, Nomada sayi $ type. 

Short-tongued Bees (12) — Halict. (5) : Chloralictus cressonii, 
obscurus, sparsus, versatus, Evylaeus 4-maculatus type; Halictus 
lerouxii fq, Oxystoglossa confusa, pura; Sphecondini: Proteraner 
<^ ; Andren. : Andrena carlini $, nasonii $, sc, Opandrena ziziae J*. 

Other Hymenoptera (4) — Chalcid.: Chrysocharis oscinidis; 
Ichneumon.: Gambrus albonotatus, apicatus, Pimpla marginata. 

Diptera (23) — Simuli.: Simulium; Syrph.: Chilosia petulca, 
Mesogramma geminata in cop, marginata, Orthoneura nitida, 
Paragus bicolor, tibials, Pipiza femoralis, nigribarba, Psilota, 
Sphaerophoria, Syrphus americanus, torvus, ribesii; Phor.: Tri- 
neura; Sarcophag.: Helieobia helicis; Muse: Myospila, Pseudo- 
pyrellia; Anthomy.: Phorbia acra; Seps.: Sepsis; Oscin.: Elachip- 
tera costata, Hippelates flavipes, Ossinis soror. 

Coleoptera (4) — Chrysomel.: Diabrotica vittata, Glyptina, 
Mantura ; Anthic. : Corphyra terminalis. 



CHARLES ROBERTSON 195 

Hemiptera (2) — Corimtlatn.: Corinu'luena pulicaria, lateraliii. 

Cicuta maculata (12: 459-60).— Hlooins June 27-Septeinber 
16; 283 visitors obsi-rved, July H-8eptcinbcr 8; Pol, \V. 

Long-tongiu'd Bees (7) — Megavhil.: Megachile breviH cf, petu- 
lans <^, Sayapis pugnata $; Bomb.: Hoinbia.s auricoinu« ^T, BombuM 
impatiens $; Ap.: Apis; Eucer.: Melissotles biinaeulata (^. 

Short-toiif^iu'd Bees (22) — Prosoind.: Prosopis illinoenHij* ^ 5, 
pyjrinaea ^^ $. sanieulae $, sayi <^ $, zi/iae $; CoUft. {(^) -. Collctea 
annatus, eulophi, latitarsis; Ilalict.: Aj^aposteinon radiatuH <^ 9, 
viridulus (^, Augochlora fervida ^, viridula $, CliloralictuH sparuuii 
$, sc, versiitus <^ $, sc, Ilalietus lerouxii cT $. «c. fq. I)aralleluM <^ ^, 
sc, Odontalic'tus 5, sc, Oxystoglossa eonfuwi $, sc, pura $, Seladonia 
<^ $; Sphecodini (<^ $) : Machaeris stypia, Spheeodes arvenaia fq. 

Other Hymenoptera (147) — Crabron.: Anacrabro fq, Clyto- 
chrysus, Ectemnius, Ilypoerabro, Lindenius errans f(|, Protothy- 
reopus rufifemur, Pseudocrabro fq, Solenius, Xestocrabro 6-macu- 
latus, texanus, trifasciatus; Oxybel.: Noto^jlossa americana fq, 
crcssonii type, emarj?inata, frontalis {([, inornata type, Oxybelua 
laetiis, niper, packardii iq, 4-notatus fq; Trypoxyl.: Trypoxylon 
tridontatuni ; Phihmth.: C'erceris bicornuta. clypeata. compacta fq, 
finitima, fumipennis, kennicottii, Euccireris, Philanthus i)unctatus; 
J'l mphrcdon.: Pscn ; Sphec: Aniniobia ichneunionca, peniisylvanica, 
Chalybion, (Milorion fcj, Isodontia apicalis, niacrocephala, Priononyx 
atrata, thoniae, Sceliphron ab, Sphex gracilis, nigricans, vulgaris; 
Larr.: Astatus bicolor, unicolor fq, Larra, Larropsis, Lyroda fq, 
Xotogonidea fq, Tachysphex acutus, belfragei fq, tarsatus, ter- 
minatus, Tachytes aurulentus fq, elongatus fcj, mandibularis, ob- 
scurus, pepticus, sericatus; Bcmbic: Bicyrtes 4-fasciata. Bombix 
spinolae, Megastizus fq, in coj), Sphecius fq, Stizus; Xysson.: IIop- 
lisus atricornis, simillimus, Xysson plagiatus. Zanysson aurinotuii, 
Pscudoplisus phaleratus f q ; Pompil.: Ageniella lon^ula, AnopliuB 
illinoensis, Arachnoproctonus, Batizonus, Ceropales bipunctata, 
elegans, fraterna. fulvipes, robinsonii, (Vyptocheilus fulgifromi, 
Epysiron, Lophoponij)ilus atrox, philadelphicus f(|, Poeciloix>mpiluH 
interruptus. navas frj, Pompiloides uinoricanus, Priocnenioide« 
fulvicornis fq, terminatus, unifasciatus, PsamniocharoH relativuit 
fq. tenebrosus, Sophropompilus; Vesp.: Polistes annularis, i)allii>eii, 
variatus fq, rubiginosus, Vespula cuneata, germanica. maculata, 
vidua ; Eumen.: Ancistrocerus cam|)estris.tigris, Eumenj's fratcrnuji, 
I^ionotus anormis, arv-cnsis, dorsalis fq, foraminatus fq. 4-iioctUfl 
fq. scrophulariae, Monobia; Scoli.: Elis interrupta fq. obnoura, 5- 
cincta ab, thoracica, Scolia bicincta f«i, nobilitata ; Ttphu: Tipbia 



196 FLOWERS AND INSECTS— XXVI 

illinoensis type, transversa; Mutill. {^) : Pseudomethoca, Sphae- 
rophthalma, Mutilla Jhexagona, sayi; Formic: Formica fusca J'; 
Chrysid. : Gonochrysis, Hedychridium, Hedychrum wiltii, Holopyga 
f q, Monochrysis, Notozus, Tetrachrysis eaerulans, montana, venusta ; 
Figit.: Eucoilidia canadensis, Figites 5-lineata, Psilodora erythro- 
pus, impatiens; Chalcid.: Chalcis, Bruchophagus, Leucospis, Peri- 
lampus triangularis, cyaneus ; Evani. : Foeniis tarsatorius ; Ichneu- 
mon.: Ichneumon jucundus; Bracon.: Bassus, Agatliis vulgaris, 
Orgilus, Bracon vernoniae, Microgaster, Iphiaulax. 

Diptera (83) — Mycetophil.: Eugnoriste, Sciara atrata; Bibion.: 
Scatopse pulicaria; Tdban.: Chrysops striatus, Tabanus; 8trati- 
omy.: Nemotelus, Stratiomyia meigenii, unilimbata; Mida.: Midas 
clavatus, tibialis; Bomhyli.: Exoprosopa fascipennis; Scenopin.: 
Scenopinus; Syrph.: Allograpta, Eristalis aeneus, flavipes, lati- 
frons, tenax, Mallota illinoensis, Mesogramma geminata, marginata, 
polita, Orthoneura nitida in cop, Paragus bicolor fq, tibialis, Pipiza 
pulchella, Platychirus quadratus, Sphaeropboria fq, Syritta ab, 
Tropidia quadrata; Conop.: Conops brachyrrhyncbus, xantho- 
pareus, Oncomyia, Zodion nanellum; Tachin.: Alophora aeneoven- 
tris, Arcbytas analis, aterrima, hystrix, Paradidyma, Tricbopbora, 
Ennyomma clistoides, Clytiomyia, Exorista confinis, pyste, Cisto- 
gaster occidua fq, pallasii, Gymnosoma, Belvosia bifasciata, uni- 
fasciata, Linnaemyia fq, Opsidia, Pacbyopbtbalmus signatus (auri- 
frons fq, type), Phasioclista, Phorantba pruinosa, purpurascens 
fq, type, Euphorocera claripennis fq, Senotainia rubriventris fq, 
trilineata fq, Spallanzania, Sturmia nigrita, Tacbina rustica, Tri- 
cbopoda lanipes, pennipes, Wintbemia ; Sarcophag. : Helicobia beli- 
cis, Sarcophaga assidua, cimbicis, bunteri, sinuata ; Muse. : Compso- 
myia fq, Graphomyia, Morellia, Musca fq, Pbormia regina, Pseudo- 
pyrellia ab, Stomoxys; Anthomy.: Calytbea, Limnopbora, Pborbia 
aera, Hylemyia laevis; Trypet.: Euaresta aequalis; Seps.: Sepsis; 
Oscin.: Hippelates plebejus; Agromyz.: Agromyza latipes. 

Lepidoptera (8) — Nymphal.: Argynnis, Basilarcbia archippus, 
Hypatus, Phyciodes; Lycaen.: Everes; Papilion.: Eurymus, Iphi- 
clides; Ctenuch.: Scepsis. 

Coleoptera (14) — Coccinell: Coccinella 9-notata, Scymnus 
consobrinus ; Ceramhyc. : Batyle, Euderces ; Chrysomel. : Diabrotica 
atripennis, 12-punctata; Bruch.: Brucbus bivulneratus ; Mordell.: 
Mordella marginata, melaena, scutellaris; Melo.: Epicauta tricbrus; 
Rhipiphor.: Myodites; Curculion.: Centrinus picumnus, scutellum- 
album. 

Hemiptera (2) — Corimelaen.: Corimelaena pulicaria; Phymat.: 
Pbymata, pred. 



CHARLES ROBERTSON 197 

Cryptotaenia canadensis (12:459-60). — Blooms June 1-July 
17; 112 visitors observed, June 8-July 9; Pol, W. 

Long-tongued Bees (2) — Megachil.: Neotry petes truneatus <^ $, 
sc; Ceratin.: Ceratina $. 

Short-tongued Bees (28) — Prosopicl: Prosopis i)ygmaea ^ $, 
saniculae $, ziziae J* $; Collet.: Colletes eulophi J*; Ilalict.: Aga- 
postemon radiatus J* $, Cidoralictus eaeruieus (^, cressonii $, illino- 
ensis <^, pilusus $, sparsus <j* $, se, ai), versatus (^ 9. "^'. zephyrus 
(^ $, Evylaeus foxii cf, pectinatus $, peetoralis $, f'l, truneatus $, 
/i/pe, Ilalictus lerouxii $, Odontalietus $, Oxystoglossa confusa 9, 
pura cT ?» fQ» Seladonia <^ $, fq; Sphecodini: Machaeris stygia (^, 
Sphecodes arvensis $, Sphecodium cressonii cf $, fq ; Anr/rcn. (9) : 
Andrena platyparia, Opandrena serotina sc, Trachandrena spir- 
aeana; Panurg.: Calliopsis andreniformis <^. 

Other llymenoptera (19) — Crahron.: Anacrabro, Clytochrysus, 
Solenius; Oxyhcl.: Oxybelus niger, 4-notatus, Philanth.: Cerceris 
astarte, elypeata ; PotnpiL: Ceropales fraterna, Pseudagenia; 
Eumcn.: Aneistroeerus tigris, Leionotus perennis, Symmorphus de- 
bilis; Chrysid.: Iledychrum parvum, violaceum ; Evani.: Foenus 
incertus, tarsatorius; Ichneumon.: Lissonota tricincta, Polyblastus, 
Polysphincta. 

Diptera (43) — Bt&ton.;Scatopse pulicaria;Lepf.; Hilarimorpha 
mikii, type; Bomhyli.: Anthrax sinuosa, Geron calvus; Empid.: 
Empis loripedis, Parempis; Syrph.: Allograpta, Eristalis trans- 
versus, Mesogramma geminata fq, marginata, Orthoneura nitida, 
Paragus bieolor ab. tibialis fq, Pipiza feraoralis, nigribarba, Syritta 
fq, Syrphus araericanus, ribesii fq, Volucella vesiculosa, Xantho- 
gramma emarginata ; Conop.: Oncomyia, Zodion fulvifrons, nanel- 
lum; Tachin.: Cistogaster occidua, pallasii, Linnaeniyia, Metopia, 
Ocyptera tenuis, Siphona fq, Xanthomelana; Muse: Pseudopy- 
rellia; Anthomy.: Phorbia acra, platura; Scatophag.: Cordylura; 
Sapromyz.: Sapromyza vulgaris; Scps.: Sepsis; Drosophil.: Droso- 
phila; Oscin.: Chlorops proxima, Elachiptera flavida, Ilippelates 
flavipes, Oscinis trigramma, Siphonella inquilina. 

Coleoptera (19) — Coccinell.: Scymnus terminatus; Dermest.: 
Cryptorhopalum triste; Lampyr.: Podabrus brunnicollis; Malach.: 
Anthocomus; Cerambyc: Euderces, Typocerus lugubris: Chry- 
somel.: Diabrotica 12-punctata; Bnich.: Bruchus bivulneratus, 
exi/2^uus, mimus f(|, musculus; MordelL: Mordella marginata, tri- 
loba, Mordellistena limbalis, pubescens, Pentaria; lihynchit.: 
Eugnamptus; Curculion.: Apion, Centrinus picumnus. 

Hemiptera (1) — Corimelaen.: Corimelaena lateralis. 



198 FLOWEBS AND INSECTS— XXVI 

Erigenia bulbosa (12: 159-60).— Blooms March 15-April 21; 
63 visitors observed, March 20-April 21 ; Mis, W. 

Long-tongued Bees (7) — Megachil. (i^) : Ceratosmia, Osmia 
atriventris, pumila; Ccratin.: Ceratina <^, fq, Zaodontomerus J*; 
Bomb.: Bombus consimilis 2; ^P-* Apis sc, ab. 

Short-tongued Bees (22) — Collet.: Colletes inaequalis c^ $, fq; 
Halict. ($) : Agapostemon radiatus, Augochlora viridula, Chlora- 
lictus pilosus, sparsus, versatus, Curtisapis forbesii type, Evylaeus 
f oxii, Halictus lerouxii, Oxystoglossa conf usa, Seladonia ; Andren. : 
Andrena carlini J* 5? ^^j ^^ cop, type, erythronii ^ 5j salictaria $, 
sayi <^, Opandrena miserabilis J*, Parandrena (^ $, Ptilandrena 
erigeniae J* $, fq, type, Trachandrena forbesii $, mariae ^ $, nuda 
$, rugosa J* $, fq, in cop, type. 

Other Hymenoptera (1) — Chrysid.: Holochrysis hilaris. 

Diptera (29) — Tipul.: Geranomyia; Stratiomy.: Odontomyia 
pubescens; Bomhyli.: Bombylius major; Syrph.: Brachypalpus 
frontosus, Chilosia capillata, Eristalis dimidiatus ab, latifrons, 
Helophilus similis, Melanostoma obscurum fq, Mesogramma 
geminata, marginata, Platychirus hyperboreus, Syritta, Syrphus 
americanus; Tachin.: Epalpus, Euphorocera claripennis, Gonia 
capitata ab; Sarcophag.: Cynomyia, Helicobia 4-setosa; Muse: 
Phormia regina, Pseudopyrellia ; Anthomy. : Phorbia acra, platura, 
Hammomyia; Lonchae.: Lonchaea aberrans, parvicornis; 8cato- 
phag.: Scatophaga; Oscin.: Elachiptera costata, Oscinis coxendix. 

Lepidoptera (2) — Papilion.: Pontia; Noctu.: Plusia simplex. 

Coleoptera (2) — Chrysomel.: Diabrotica vittata; Oedemer.: 
Asclera ruficollis. 

Eryngium yuccifolium (12:459-60). — Blooms July 7- August 
30 ; 182 visitors observed, July 7-August 12 ; Pol, W. 

Long-tongued Bees (13) — Megachil.: Megachilini: Megachile 
brevis ^ $, sc, mendica ^, petulans J*, Coelioxyini : Coelioxys octo- 
dentata J^ 5, in cop, sayi <^; Ceratin.: Ceratina (^ $; Bomb.: Bom- 
bias separatus ^ ^, Bombus americanorum $, impatiens ^; Ap.: 
Apis ; Nomad. : Cephen $ ; Epeol. : Epeolus bif asciatus J*, Triepeo- 
lus lunatus $. 

Short-tongued Bees (20) — Prosopid. (J* $) : Prosopis pygmaea, 
ziziae; Collet.: Colletes speciosus $, type; Halict.: Agapostemon 
radiatus J* 5, Augochlora fervida 5, Chloralictus pilosus $, sparsus 
5, sc, versatus $, sc, Curtisapis forbesii $, Evylaeus arcuatus $, 
pectoralis 5, Halictus lerouxii J* $, parallelus J* ?, Odontalictus 
5, Seladonia (^ ; Sphecodini : Machaeris stygia $, Sphecodes arvensis 
(^ 5, in cop, Sphecodium cressonii $; Nomi.: Paranomia $; Panurg.: 
Calliopsis andreniformis J* $. 



CHARLES liUliElilSOS 199 

Other Ilymenoptera (58) — Crabron.: Protothyreopus rufifomur, 
Pseudocrabo ; Oxyhcl.: Notoprlossu amoricana, frontalis, (Jxybeliw 
4-notatus; Philanth.: Cercrris hicorniita. fiiniiponnis, promineiw, 
raui, Eucercoris, ab, Philanthus piiiictatus, vnitilabrLs; Sphec: 
Ammobia ichneumonea, nuda, pennsylvanica, Isodontia apicalia, 
Priononyx atrata, thomae, Sphox gracilis, nijjricans, pictiiKiinis in 
cop, vulgaris; Larr.: Astatus unicolor, Tachysphex bflfragci, 
Tachytes aurulentus, distinctus, elongatus; linnhu'.: BicyrtcH 4- 
fasciata. vontralis, Bcnibix nubillipcnnis, spinobu*, Mfgastizus, 
Stiziis; Pompil.: Arachnoproctoiius, Ccropah's rl('|runs. Ijopho- 
l)onipilus atrox, pliiladclpliicus, Pocciloponipilus navus, Poinp- 
iloides araericanus, in cop, Priocnemoidcs fulvieornis; Vesp.: 
Polistes variatus; Eumen.: Ancistroccrus caniprstris, Eumcnca 
belfragei, fraternus, Leionotus anormis in coj). arvcnsis, dorsiilis fq, 
foraminatus, vagus, Monobia ; IScoli.: Elis intcrrupta, obscura, 5- 
cincta, thoracica iype, Scolia bicincta, nobilitata; Mittill.: Mutilla 
liexagona <^ ; Chalcid. : Leucospis. 

Diptera (59) — Taban.: Tabanus; Stratiomy.: Xemotelus, Odon- 
tomyia cineta; Mida.: Midas clavatus, tibialis; Bombyli.: Anthrax 
alternata, fulvohirta, Exoprosopa decora, fasciata, fascipennis, 
Geron rufipes, Systoeclius; Syrph.: Allograpta, Eristalis aeneus, 
latifrons, tenax, transversus, Mesograninia geniinata, marginata, 
polita, Milesia, Orthoneura nitida, Paragus tibialis, Sphaerophoria, 
Syritta; Conop.: Conops braciiyrrliynchus, xanthoparcus, On- 
comyia, Physocephala texana, tibialis, Zodion fulvifrons, nanelluni, 
obliquefasciatum ; Tachin.: Alophora aeneoventris, fumosa, 
Archytas analis, Belvosia bifasciata, Cistogaster occidua, pallasi, 
Gymnosoma, Leskia, Ocyptera lata, tenuis, Phorantha asteris, hum- 
eralis, magna, pruinosa, Senotainia rubriventris, trilineata, Spal- 
lanzania, Trichopoda pennipes, Trichophora ; Sarcophag.: Sarco- 
l)haga assidua; Muse: Conipsomyia, Protocalliphora, Pseudopyrel- 
lia; Anthomy.: Coenosia antica, Lispa uliginosa, Phorbia aera. 

Lepidoptera (21) — Nymphal.: Anosia, Hasilarehia arehip|)us, 
Cercyonis, Charidryas, Phyciodes. Speyeria ; Lycaen.: C'hryso- 
phanus, Everes, Uranotes; Papilion.: Euphoeades. Eurymiw, 
Laertia, Pontia; Hespcri.: Limochores taunias, Pholisora catulliw, 
Polites; Sesi.: Sesia sexfasciata; Ctcnuch.: Scepsis; Arrti.: I'tc- 
theisa; Noctu.: Acontia, Spragueia. 

Coleoptera {8)—Scarabae.: Euphoria Kepulchralis, Trichiua 
piger; Chrysomel.: Cryptocephalus ; Mdo.: Nemognatha, Pyrota 
terminata; Rhipiphor.: Myodites, Rhipiphorus limbatus; Cur- 
culion.: Centrinus scutelluin-album. 

Hemiptera (3) — Core: Alydus eurinus; Lyrpu.: Lygn«'"«. 
Oncopeltus. 



200 FLOWERS AND INSECTS— XXVI 

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 J*, 

Short-tongued Bees (21) — Prosopid.: Prosopis eulophi (^ $> f^> 
type, illinoensis J*, pygmaea J* $, sanieulae (^ $, sayi <^ $, thaspii 5, 
ziziae J* $; Collet.: CoUetes aestivalis $, eulophi <^, type; Halict.: 
Agapostemon radiatus $, Chloralictus pruinosus $, sc, sparsus J* $, 
sc, fq, versatus $, Evylaeus arcuatus $, pectoralis $, sc, Halictus 
lerouxii ^, sc, parallelus $, Oxystoglossa confusa $; AwcZren.: 
Opandrena personata 2> Trachandrena crataegi $, sc; Panurg.: 
Heterosarus $, sc. 

Other Hymenoptera (30) — Crahron.: Pseudocrabro, Solenius, 
Xestocrabro 6-maculatus, texanus; Oxyhel.: Notoglossa americana, 
frontalis, Oxybelus packardii; Philanth.: Cerceris clypeata, corn- 
par; Sphec: Chalybion, Sceliphron; Pompil.: Lophopompilus phil- 
adelphicus, Planiceps niger, Poecilopompilus navus, Psammochares 
tenebrosus; Vesp.: Polistes variatus; Eumen.: Eumenes fraternus, 
Leionotus foraminatus, ziziae; Thynn.: Methoca; Chrysid.: Hedy- 
chrum violaceum, wiltii, Holopyga, Tetrachrysis caerulans ; Figit. : 
Psilodora impatiens, Xyalosema; Chalcid.: Chalcis, Perilampus 
cyaneus, fulvicornis; Ichneumon.: Cryptus exulans. 

Diptera (59) — Chironom.: Ceratopogon fusculus fq, websteri; 
Mycetophil.: Sciara atrata; Bihion.: Scatopse pulicaria fq; Stra- 
tiomy.: Stratiomyia meigenii; Bombyli.: Argyramoeba albof asciata ; 
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 unif asciata, 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; Muse: 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; Chry samel.: Haltica; 
Mordell.: Mordella marginata fq, Mordellistena limbalis; Curcu- 
lion.: Centrinites. 



CHARLES ROBERTSON 201 

Hemiptera (2) — Lygae.: Lygacus; Caps.: Lygus. 

Heracleum lanatum (12: 4r)9-G0).— BliKmis May 6-,Iunc 17; 
274 visitoi-s (»bservecl, May 8-June 17; Pol, W. 

Long:-ton«,'Ut'il Bees (7) — McgachiL: Alcidamea Himplcx cT 9i 
Ccratin.: Ceratina <^ $, se; Ap.: Apis sc, f(i ; Nomad.: lleminomada 
$, Holonomada superba ^T, Nomada illinoensis 9, Phor $; Eucer.: 
Tetralonia dilecta $. 

Short-tongued Bees (38) — Prosopid.: Prosopis illinoensis (^ 9, 
pygmaea J* $, ab, saniculae ^, sayi <^ $, fq, in cop, type, ziziae (^ §, 
ab; Collet.: Colletes aestivalis (^, inaequalis $, sc ; Ilalirt. (9): 
Agapostemon. radiatus sf, Chloralietus pilosiis sc, fq, KparsuM hc, 
versatus sc, fq, Evylaeus peetoralis sc, f(j, Ilalictus lerouxii, pnral- 
lelus sc, Oxystoglossa confusa, Seladonia; Sphecodini : Drepanium 
2, fq, Machaeris illinoensis $, type, stygia $, Proteraner ^T, Sphe- 
codes arvensis $, heraclei $, type, Sphecodiiim cressonii 9; Antlren. 
($) : Andrena carlini, erythrogastra, pnini, wiyi sc, Opandrena 
miserabilis sc, fq, cressonii sc, Parandrena, Ptilandrena g. maculati, 
Trachandrena claytoniae sc, fq, crataegi, forbesii sc, heraclei sc, 
type, nuda sc, fq, rugosa sc, spiraeana. 

Other Ilymenoptera (67) — Crahron.: Clytochrysus fq, Lopho- 
crabro, Ectemnius, Hypocrabro, Protothyreopus rufifemur, Pscudo- 
crabro fq, Rhopalum pedicellatum, scutellatum, Solenius fq, 
Xestocrabro 6-maculatus, texanus; OxyhcL: Notoglossa americana, 
Oxybelus niger, 4-notatus fq; Sphec.: Chalybion, Chlorion, Sceli- 
phron, Sphex vulgaris; Larr.: Notogonidea, Tachysphex acntus; 
Pompil.: Anoplius illinoensis, virginiensis, Ceropales fratema, 
Episyron, Planiceps feralis, Pompiloides marginatus, subviolaceus, 
Psammochares scelestus, tenebrosus; Vcsp.: Polistes pallipes fq, 
variatus fq, rubiginosus, Vespula germanica, maculata; Eumen.: 
Ancistrocerus tigris, unifasciatus, Eumenes fraternus, Leionotus 
anormis, clypeatus, foraminatus, illinoensis, megaera, scrophu- 
lariae, Symmorphus debilis, walshianus; Tiphi.: Tiphia clypeata, 
inornata, vulgaris ab, type; Chrysid.: Ilolojjyga ; Figit.: Eucoila, 
Eucoilidia; Chaleid.: Ilaltichella ornata. Elasnuis, Perilampus ful- 
vicornis; Evani.: Foenus tarsatorius; Ichneumon.: Ichneumon 
flavizonatus, jucundus, funestus, longulus. Lanipronota americana, 
Phygadeuon vulgaris, Porizon conotracheli, Trogus vulpinus, Try- 
phon affinis, Metopius terminalis; liracon.: Microbracon; Ten- 
ihredin.: Dolerus aprilis. 

Diptera (l31)—Mycctophil.: Sciara atrata fq. incon-stans; 
Bibion.: Bibio albipennis, Dilophus obesulus fq, ScatojMte pulicaria; 
Tahan.: Chrysops indus, striatus; Stratiomy.: Nemotehw fn ' • '■" 



202 FLOWEBS AND INSECTS— XXVI 

tomyia cincta, Stratiomyia apicula, discalis, meigenii fq, quater- 
naria; Bomhyli.: 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 petulca, 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, Spbaero- 
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, 
Blepbaripeza, Brachyeoma sarcophagina type, Chaetogaedia analis, 
Cistogaster occidua, pallasi, Cryptomeigenia, Eupborocera clari- 
pennis, Gonia capitata, Gymnochaeta, Gymnosoma, Hilarella, 
Hyalomyodes, Hyalurgus, Leucostoma atra, neomexicana, nigri- 
cornis, Pachyophthalmus signatus fq, Peleteria, Phorantha humer- 
alis type, pruinosa type, purpurascens, robertsonii 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, buUata, cimbicis, dux sarracenioides, impar, utilis; Muse: 
Graphomyia fq, Lucilia caesar ab, sericata fq, sylvarum, Morellia 
fq, Phormia regina fq, Pseudopyrellia ab; Anthomy.: Antho- 
myiella fq, Calythea, Limnopliora, 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, Pbyciodes; Papilion.: Iphiclides, Laertias; Hesperi.: 
Polites. 

Coleoptera (16) — Dermest.: Anthrenus castaneae, Cryptorho- 
palum haemorrboidale, Orphilus; Lampyr.: Telephorus flavipes; 
MalacJi.: Anthocomus; Scarabae.: Euphoria sepulchralis, Trichius 
affinis, piger; Ceramhyc: Euderces; Chrysomel.: Diabrotica 12- 
punctata, vittata; Mordell.: Mordella marginata, Mordellistena 
biplagiata f q ; Anthic. : Corphyra labiata ; Melo. : Macrobasis ; Cur- 
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-tonpuod Bees (8) — Megachil.: Ceratosmia $, Diceratomnia 
^; Cerotin.: Zaodontomerus ^; Bomb.: Bonibus impatieiw $; Ap.: 
Apis; Nomad.: Gnathias euneatus $, Xoniada parva ^T. »"'>'» 9- 

Short-tonpiied Bees (24) — Prusopul.: I'rosopis illinoenjiia ^, 
pyprmaea o^ ■'<»yi cT $. ^n. thaspii (^, ziziac <^; Ilalict.: (9) ; Aga- 
postemon radiatus se, splendens, Aiigochlora viri(hila, Chloralictiw 
caenileus. obsounis sc, type, pilosus se, sparsus se. venuituH nc, 
Ciirtisapis coriacea sc, forhesii se, Evylaeus peetoraliH hc, ab, 4- 
maeulatus sc, ab, Halictiis lerouxii, Oxystojflossa confusa ab, pura, 
Seladonia; Sphecodini : Proteraner ^T; Andren.: Andrena |?eranii 
$, sayi $. 

Other Hymenoptera (4) — Eumen.: Ancistrocerus tigris, Eu- 
menes fraternus; C/tn/.s/V/.; Ilolochrysis hilaris; Evani.: Fo<'nu8 
tarsatorius. 

Diptera (27) — Bomhyli.: Aldrichia, Bonibylius major; Empid.: 
Empis distans ab, humilis type, loripedis; Sj/rph.: Allo^rapta, 
Chilosia eyanescens fq, |)etulca, Mesopraimna peminata. mar^inata, 
Para*?iis bieolor, tibialis, Pipiza femoralis, Kliinirin, Sphaeroplioria, 
Sphegrina campanulata type, rufiventris, Syritta ab, Syrphiw 
ribesii; Conop.: Myopa vesiculosa; Tachin.: (lymnosoraa, Peleteria, 
Siphona fq; Anthomy.: Hylemyia inornata, Phorbia platura; Psil.: 
Chyliza; Oscin.: Siphonella oscinina. 

Lepidoptera (2) — Papilion.: Eurj'mus; Hesperi.: Thanaos 
martialis. 

Coleoptera (5) — Bruch.: Bruchus minus; Mordell.: Mordel- 
listena biplagiata; Anthic.: Corphyra terminalis; Curculion.: 
Idiostethus subcalvus, tubulatus. 

Hemiptera (1) — Caps.: Lygus. 

Oxypolis rigidior (12: 459-60).— Blooms July 31-Soptember 
8; 157 visitors obsen-ed, Au^riist 14-Scptember 8; Pol, W. 

Lonp-tonpued Bees (1) — Ap.: Api.s. 

Short-tonpued Bees (6)—Prosopid. (c^ $) : Prosopia pygmaea, 
ziziae; Ilnlict.: Chloralictus sparsus 9, sc, versatus (^ 9i ■«» Halictiw 
lerouxii $; Sphecodini: Sphecodes arvensis cf. 

Other Hymenoptera (73) — Crahron.: Lindenius crranM. Sol- 
enius, Xestocrabro texanu.s. trifasciatus; Oxybel.: NotogloMia 
americana, frontali.s, Oxybelus packardii. 4-notatuj»: PhUanlk.: 
Cerceris clypeata, compacta; Sphec: Chalybion f«|. Chlorion. lio- 
dontia apicali.s, Priononyx atrata, Sceliphron; lAirr.: Afltatiui uni- 
color, Larropis, Lyroda, Tachysphex belfragei, Tachytwi clongatus; 



204 FLOWERS AND INSECTS— XXVI 

Bembic: Stizus; Nysson.: Hoplisus simillimus, Pseudoplisus phale- 
ratus; Pompil.: Araclinoproctomis, Cryptocheilus fulgifrons, 
Lophopompilus philadelphicus, Priocnemoides fulvicornis, Psam- 
mochares relativus, Sophropompilus ; Vesp.: Polistes variatus, 
rubiginosus; Eumen.: Leionotus foraminatus, fundatus, histrion- 
alis type, ziziae; Scoli.: Elis 5-cincta, Scolia bicincta; Tiphi.: 
Tiphia clypeata, punctata type, transversa; Myrmos.: Myrmosa 
unicolor; Mutill. ( J*) : Sphaerophthalma, Mutilla hexagona; 
Chrysid.: Hedychrum violaceuni. Holopyga, Tetrachrysis caeru- 
lans, venusta; Figit.: Aspicera, Cothonaspis, Figites impatiens fq, 
Xyalosema; Chalcid.: Eutrichosoma, Brucbophagus, Leucopsis, 
Perilampus fulvicornis, byalinus; Ichneumon.: Ichneumon flavi- 
zonatus, Ceratosoma ab; Bracon.: Microdus simillimus, Agatbis 
areolata, Cbelonus, Urosigalpbus, Apanteles crassicornis, Toxo- 
neuron abdominale, Macrodyctium, Microplitis croceipes, gortynae, 
Monogonogastra, Ipbiaulax, Opius fuseipennis. 

Diptera (53) — Mycetophil.: Sciara atrata; Empid.: Par- 
empis; Syrph.: Allograpta, Mesogramma geminata, marginata, 
polita, Paragus bicolor, Spilomyia longicornis, Syritta, Syrpbus 
ribesii; Pipuncul.: Cbalarus; Conop.: Conops bracbyrrbynebus, 
Zodion nanellum; Tachin.: Alopbora aeneoventris, Belvosia uni- 
fasciata, Cistogaster occidua, Clytiomyia, Epigrimyia geniculata 
type, Exorista confinis, pyste, Eupborocera claripennis, Gymno- 
soma, Hypostena indecisa type, Ocyptera dosiades, Pacbyopbtbal- 
mus signatus, Pborantba pupurascens, Senotainia rubriventris, 
trilineata, Spallanzania, Tricbopoda pennipes; Sarcophag.: Heli- 
cobia belicis, 4-setosa, Sarcopbaga assidua, cimbicis; Muse: Lu- 
cilia sericata, sylvarum, Morellia, Musca, Pseudopyrellia ; An- 
thomy.: Antbomyiella, Limnopbora, Lispa consanguinea, Pborbia 
platura; Trypet.: Euaresta bella; Ephydr.: Ocbtbera; Oscin.: Hip- 
pelates flavipes fq, plebejus, pusio, Oscinis coxendix, trigramma, 
Sipbonella cinerea; Agromyz.: Agromyza latipes, Leucopis. 

Lepidoptera (3) — Nymphal.: Basilarcbia arcbippus; Lycaen.: 
Eupsycbe ; Hesperi. : Limocbores taumas. 

Coleoptera (16) — Coccinell.: Coccinella sanguinea, Hippodamea 
convergens; Latridi.: Corticaria; Lampyr.: Cbauliognatbus penn- 
sylvanicus; Scarabae.: Eupboria sepulcbralis ; Chrysomel.: Dia- 
brotica atripennis, 12-punctata, Luperaltica; Bruch.: Brucbus cru- 
entatus ; Mordell. : Mordella melaena, Mordellistena limbalis ; Melo. : 
Epieauta cinerea, pennsylvanica, Pyrota germari; Bhipiphor.: 
Ebipipborus limbatus ; Curculion. : Centrinus pieumnus. 

Hemiptera (4) — Lygae.: Oncopeltus; Caps.: Lygus, Plagiogna- 
tbus; Acanthi.: Tripbleps. 



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 vereatuM 3. 

Other Ilynienoptera (15:30) — Crabrun.: SoleniuH 1, Xe«to- 
crabro texanus 3; OxybcL: Notoglossa frontalis 1; Sphec: Chaly- 
bion 15, Priononyx atrata 1, Sceliphron 4; Larr.: Lyrotla 1; Nyi- 
son.: Iloplisus simillimus 1, Pseudoplisus phaleratus 2; Pompil.: 
Lophoponipihis philadelpliieus 2, Priocnemoides fulvicorniH 2; 
Vcsp.: Polistes rublginosus 1, variatus 2; Tiphi.: Tiphia clyi)eata 
1 ; Chryskl. Tetrachrysis caerulans 1. 

Diptera (14: 44)— 5'f/rp/i.: Spilomyia lonpicornis 1, Syritta 5, 
Syrphus ribesii 1; Tachin.: Alophora aeneoventris 1, HelvoHia uni- 
fasciata 9, Exorista pyste 1, Ocyptera dosiades 1, Pachyophtlialmus 
sigrnatus 4, Si)allanzania 2; Sarcuphag.: Ilelieobia hcIiciM 7, Sar- 
copliaga assidua 4, cimbicis 5; Muse: Morellia 2; Anthomy.: An- 
thomyiella 1. 

Pastinaca sativa (int. 12:459-60). — Blooms May 15-Auj^.st 
10; 298 visitors observed, June 2-July 9; Pol, Y. 

Long-tongued Bees (7) — Mcgachil.: Megachile petulans $; 
Ceratin.: Ceratina $, sc ; Bomb.: Bombias separatus 5, Bombus 
americanorum $ ^, irapatiens $; Ap.: Apis; Anthophor.: Anthe- 
moessa (^. 

Short-tongued Bees (25) — Prosopid.: Pros()i)is illinoensis ^ $, 
type, pygmaea $, sayi <^ ^, ziziae <^ $; Collet.: Colletes brevicomia 
cf, type, eulophi <^ $; Halict.: Chloralictus sparsus ^ ^, sc, ab, type, 
versatus (^ $, sc, Curtisapis forbesii c^, Evylaeus arcuatus 9. pec- 
toralis $, sc, Halictus parallelus % Oxystoglos.sa confu.sa 9. Sela- 
donia (^ ; Sphecodini : Sphecodes arvensis cT 9- ^b. clematidia <^, 
Sphecodium cressonii (^ $; Andren.: Andrena platyparia <^, pruni 
9, sc, Opandrena cre.s.sonii $, personata $, .sc, type, serotina J, type, 
Trachandrena crataegi $, hippotes $, nuda $, sc. 

Other Ilymenoptera (94) — Crabron.: Clytochrysus, Ectemniua, 
Ilypocrabro, Protothyreopus rufifenuir, Pseudocrabro, Solenius fq, 
Xestocrabro G-maculatus, trifa.sciatus; Oxybel.: Xotofflo.s.sa ameri- 
cana, emarginata, frontalis type, inornata, Oxybelus 4-notatuJi; 
Trypoxyl.: Trypoxylon clavatuni ; Philanth.: Cerceris cly|>eata» 
corapacta, fumipenni.s, kennicottii, Philnnthus punctatus; Sphw.: 
Ammobia ichneumonea, penn.sylvanica, Chalybion, Isodontia api- 
calis, Sceliphron, Sphex nigricans, vulgaris; Larr.: Astatiw unicolor, 
Lyroda; Nysson.: Pseudoplisus phaleratus; Pompil.: Anoplius illi- 
noensis, virginiensis, Arachnoproctonus, Ceropales fratcma. 



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- 
cincta; Tiphi.: Tiphia vulgaris; Mutill. (c^) : Sphaerophthalma, 
Mutilla hexagona; Chrysid.: Hedychrum violaceum, Holopyga fq, 
Tetrachrysis nortonii; Figit.: Aspicera, Psilodora impatiens; 
Chalcid.: Leucospis, Perilampus triangularis, eyaneus, platygaster, 
Pachyneuron ; Evani. : 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, Ipliiaulax; Tenthredin.: 
Hylotoma humeralis ; Scelion. : Teleas. 

Diptera (114) — Mycetophil: Sciara atrata, vulgaris; Bihion.: 
Scatopse pulicaria ; Tab an. : Chrysops striatus, Therioplectes ; Stra- 
tiomy.: AUognosta fuscitarsis, Stratiomyia meigenii; Bomhyli.: 
Anthrax sinuosa, Argyramoeba oedipus; Scenopi/n.: Scenopinus; 
Empid.: Empis distans, Parempis; Syrph.: AUograpta 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 f estiva, 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, Eumyo- 
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, eimbicis, haemorrhoidalis, 
hunteri, sinuata; Muse: Calliphora erythrocephala, Compsomyia 
fq, Graphomyia, Lucilia caesar, Morellia fq, Musca, Myospila, Phor- 
mia regina, Protocalliphora, Pseudopyrellia ; Anthomy.: Calythea, 



CJlAIil.KS RuBtlil^UX liUT 

Hyetodosia, Limnophora, Oi)hyra ftj, Phorbia acra f q ; (JrtnL: 
Camptoneura, Kivellia viriilulans, Sfoptera; Sapromyz.: Sapro- 
myza vulf?aris; Seps.: Sepsis; Oscin.: t'hlorops asHimiliN, nu'lh-a, 
proxima, Ilippelates ttavii)rs, i)usio, MtTomyza, (Jssinis soror; Ayro- 
myz.: Lobioptera. 

Lepidoptera (9) — \ijmphal.: Anosia, lia.silarchia a.styanax, 
Hypatus; Lycaen.: Chrysophanus, Cyaniris, Thecla calanun; Ilea- 
peri.: Limochores taumas; Sesi.: Sesia pictiiH>8; Pyromorph • !! ;- 
risina. 

Coleoptera (42) — Coccinell.: CoccinoUa D-notata, Haii^Miin.a, 
JIil)podaiiK'a parenthesis, convergcns, MepiUa ; Drrmfst.: AnthrmuM 
castaneae, Attagenus f(j, Cryptorhopalum haemorrhoidab'; Nitulul.: 
Carpophilus; Elater.: Agriotes; liupnst.: Afjrilus diftieilis, ejjcnuN; 
Lampyr.: Caloi)teron, Chaulio^natlius inarfrinatus, IMiotimi.s. l*oda- 
brus nigulosus, tomentosus, Pyractoinena, Teb'phonis Havii)e8; 
Malach.: Anthocomus, Attains; Scarabac: p]»iphoria ful(ji<bi, srpul- 
chralis, Trichius piper; Ctrambyc: Acmaeops direota, Callimoxys 
fuscipennis, sanguinicollis, Euderces, Typocerus sinuatus, velutinuH; 
ChrysomeL: Anomoea, Diabrotiea vittata, Pachybrachys, Tri- 
rhabda; Mclandry.: Nothus; Mordcll.: MordcUa marpinata, 
melaena, 8-punctata, Mordellistena ornata, Pentaria; Mrlo: Epi- 
cauta cinerea, Macrobasis. 

Hemiptera (6) — Corimclaen.: Corinielaena puliearia fcj ; lieryt.: 
Corizus; Ly(ja€.: Lypaeus; Caps.: Lypus, Phytocoris, Plapioffna- 
thus. 

Neuroptera (1) — Chrysop.: Chrysopa. 

Polytaenia nuttallii (12 : 459-60).— Blooms May 3-June 17; 75 
visitors obsened, May 9-June 8; Mis, Y. 

Lonp-tonfrued Bees (4) — MegachU.: C'oelioxys 8-dentata <^; 
Bomb.: Bombus americanorum ^; Ap. Apis; Somad.: Nomada 
illinoensis $. 

Short-tonp:ued Bees (20) — Prosopid. ((^ $) : Prosopi.s pypniaoa 
in cop, ziziae ab; Collet.: Colletes aestivalis J* $, inaoqualis 9. k*" ; 
Halict ($) : Augochlora fenida, viridula, Chloralictus pilosus sc, 
pruinosus sc, sparsua sc, tejfulariH sc, versatus sc, Evylaeiw pec- 
toralis, Odontalictus sc, Oxystoplossa similis sc, Scladonia sc; An- 
dren.: Andrena nasonii 9. sc. Opandrena oressonii (^ 9. ••«. lixiae ^ 
9. sc, Trachandn-na crataepi 9. «<*. forbesii 9 

Other Ilymenoptera (20) — Crabron.: Ectemnius, Ilypocrahro, 
Pseudoerabro, Solenius; Sphec: Scoliphron; Vesp.: PoIiMtcji pal- 
lipes, variatus; Eumrn.: Ancistrocerus eamix»stris, Kument^ fra- 
temus, LeionotuM anormis, clypeatus, foraminatuii, hijitrionaliji, 



208 FLOWERS AND INSECTS— XXVI 

illinoensis, scrophulariae, vagus, ziziae, Symmorphus walshianus; 
Tiphi.: Tiphia inornata; Chalcid.: Eurytoma. 

Diptera (17) — Strotiomy.: Allognosta obscuriventris, Nemotelus, 
Stratiomyia apicula; Syrph.: Allograpta, Mesogramma geminata, 
marginata, Paragus bicolor, tibialis, Spbaerophoria, Tropidia 
mamillata; Conop.: Oncomyia, Zodion fulvifrons; Tachin.: Cisto- 
gaster occidua, pallasi, Leucostoma atra, nigricornis, Linnaemyia, 
Phorantha piirpTirasceiis ; Muse: Pseudopyrellia ; Anthomy.: 
Phorbia acra ab, platura ; Ortal. : Rivellia pallida ; Oscin. : Chlorops 
proxima, Hippelates flavipes; Agromyz.: Leueopis, 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; Yesp.: Polistes variatus 15; Eumen.: Eumenes fraternus 1, 
Leionotus foraminatus 4, histrionalis 4, illinoensis 1, ziziae 2, Sym- 
morphus walshianus 2. 

Diptera (12:127) — Stratiomy.: Nemotelus 3, Stratiomyia api- 
cula 2; Syrph.: Mesogramma geminata 1, marginata 11, Paragus 
bicolor 1, tibialis 1; Conop.: Oncomyia 1, Zodion fulvifrons 1; 
Muse: 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 (S:S)— Halict. (?) : Chloralictus versatus 
1, Evylaeus 4-maculatus 1 ; Prosopid.: Prosopis saniculae $, 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. ($) : Augochlora viridula, 
Chloralictus sparsus, tegularis, Curtisapis eoriacea, Evylaeus foxii, 



CJIAIiLKS ROBKlilSUS 209 

Oxystoglossa confusa; Prosopid.: Prosopis pyg^maea (^, saniculae 
^, type, sayi J", ziziae $; Andrni.: Opaiulivna crt'ssouii $, kc, jht- 
sonata J*, ziziae $, sc, Trachandrt'iia ruf^'osa $, sc. 

Other Hymenoptera (3)— A'wmtn.: Ancistroeeriw tiffris Sym- 
morphus debilis, Bracon.: Braeun ashmeadi type. 

Diptera (12) — Mycciophil.: Sciara atrata; Kmpid.: liraehy- 
stoma robertsonii type, Empis distan.s, nuda; Syrph.: Mesotfranima 
geminata, marf?inata ; Tachin.: Siphona; Muse: Myospila ; An- 
thorny.: Ilomalomyia prostrata; Sapromyz.: Sapromyza longii>en- 
iiis; Ileteroneur.: Cliisia; Oscin.: Siphonella oscinina. 

Hemiptera (2) — Corimelaen.: Coriinelaena puliearia; Caps.: 
LojMdea. 

Slum cicutaefolium (12: 459-60 ). — Blooms July 19-Scptem- 
ber 7; 220 visitors obser\'ed, July 20-Septembcr 1; Pol, W. 

Long-tongued Bees (4) — Bomb. (?, c) : Bombus americanonim, 
impatiens; ^Ip.: Apis; Euccr.: ^lelissodes agilis <^. 

Short-tongued Bees (17) — Prosopid.: Prosopis pygnuu-a f^, 
sayi 2, ziziae $; Collet.: Colletes araericanus (^, eulophi (^; Ilalict.: 
Chloralictus illinoensis <^ $, sparsus $, versatus <^ $, sc, zophynia 
(^ $, Curtisapis coriacea (^ $, Evylaeus arcuatus ^, truncal us 9. 
Halictus lerouxii (^, Odontalictus 9- Seladonia $; Sphecodini : Mach- 
aeris stygia (^ $, fq, type, Sphecodes arvcnsis (^. 

Other Hymenoptera (97) — Crahron.: Clytochrysus fq, Ectcm- 
nius fq, Lindenius errans fq, Solenius, Xestocrabro 6-maculatus, 
trifasciatus; Oxyhel.: Notoglossa araericana fq, emarginata, fron- 
talis fq, Oxybelus niger type, packardii, 4-notatus f q ; Trypoxyl.: 
Trypoxylon clavatum; Philanth.: Cerceris bicornuta, clypeata, echo, 
finitima, kennicottii, prominens, Philanthus punctatus; Sphec: 
Chalybion, Chlorion, Isodontia apicalis, Priononyx tlioniae, Sceli- 
phron, Sphex gracilis, vulgaris; Larr.: Larropsis, Lyroda, Noto- 
gonidea fq, Tachysphex terminatus, Tachytes elongatus; Bemhic: 
Megastizus; Nysson.: Iloplisoides, Nysson plagiatus, Zanysson 
plesia, Pseudoplisus phaleratus; Ponipil.: Ageniella accepta, 
longula, Ceropales fraterna, Episyron, Lophopompilus atrox, phil- 
adelphicus, Pompiloides marginatus, subviolaceus, Psaramochar«i 
relativus, tenebrosus; Vesp.: Polistes pallipes, variatufi, Ve«pula 
germanica; Eiimen.: Ancistrocerus campestris, tigris, Eumcnea 
fraternus, Leionotus foraininatus, scrophulariae, ziziae, Monobia; 
Scoli.: Elis interrupta, o-cincta, Scolia bicincta; Tiphi.: Tiphia 
punctata; Bethyl.: Goniozus; Thynn.: Methoca; Mynnos.: MyrraoM 
parv'ula type; MutiU.: Sphaerophthalma cT; Chrysid.: HolochryHia 
verticalis, Ilolopyga, Tetrachrysis caerulana; Figit.: Eucoila mel- 



210 FLOWERS AND INSECTS— XXVI i 

1 

lipes fq, Eucoilidia, Figites impatiens, Psilodora erythropus, im- j 

patiens, Trirhoptrasema, Xyalosema; Chalcid.: Chalcis, Haltichella i 

ornata, xanticles, Smiera debilis; Elasmus, Bruchophagus, Eury- i 

toma, Leucospis, Perilampus cyaneus, Eutelus, Syntomopus; Ich- ■ 
neunion.: Agrothereutes mundus, Ichneumon flavizonatus, Cremas- 

tus retiniae, Cryptus persimilis, Limneria eurycreontis ; Bracon.: ; 

Chelonus; Apanteles illinoensis, terminalis, Microplitis ceratomiae, : 

Iphiaulax. : 

Diptera (74) — Mycetophil.: Sciara atrata; Taban.: Clirysops • 

striatus; Stratiomy.: Stratiomyia meigenii; Bombyli.: Anthrax j 

alternata, Exoprosopa fasciata, fascipennis, Sparnopolius, Toxo- i 

phora; Empid.: Parempis; Syrph.: Allograpta, Eristalis aeneus, i 

tenax, Mesogramma geminata, marginata, polita, Orthoneura nitida, i 

Paragus tibialis, Pipiza pulchella, Platychirus quadratus, Syritta, i 

Syrphus ribesii, Tropidia albistylum, quadrata; Tachin.: Belvosia | 

unifasciata, Chaetogaedia analis, Clytiomyia, Distichona varia, En- ; 

nyomma globosa, Euphorocera claripennis, Frontina aletiae, Gym- j 

nosoma, Hypostena variabilis, Leucostoma atra, Linnaemyia, Pach- i 

yophthalmus signatus, floridensis, Panzeria fq, Phasiociista, Phor- j 

antha purpurascens fq, Senotainia rubriventris, trilineata fq, j 

Spallanzania, Sturmia distincta, Trichopoda pennipes; Sarco- i 

phag.: Helicobia helicis, 4-setosa, Sarcophaga assidua fq, haemor- | 

rhoidalis; Muse: Compsomyia, Graphomyia, Lucilia sericata, Mor- ] 

ellia, Musca, Phormia regina, Protocalliphora, Pseudopyrellia, j 

Stomoxyz; Anthomy.: Calythea, Coenosia fuscopunctata, Homalo- i 

myia prostrata, Limnophora, Ophyra, Phorbia acra; Ortal.: .i 

Euxesta; Trypet.: Plagiotoma, Seps.: Themira; Ephydr.: Ochthera, ] 

predaceous; Oscin.: Chlorops proxima, Hippelates flavipes, pusio, j 
Meromyza, Siphonella cinerea, Agromyz.: Agromyza latipes. 

Lepidoptera (5) — Nymphal.: Anosia, Hypatus; Lycaen.: 
Cyaniris, Eupsyche; Papilion.: Pieris. 

Coleoptera (1) — Coccinell.: Coccinella sanguinea, Megilla; -! 

Dermest.: Attagenus; Lampyr.: Chauliognathus pennsylvanicus, j 

Ditemnus, Photinus; Malach.: Collops; Scarabae.: Euphoria sepul- • 

chralis; Chrysomel.: Diabrotica 12-punctata, longicornis, vittata; : 

Bruch.: Bruchus discoideus, hibisci, obtectus; Mordell.: Mordella i 

marginata, melaena, 8-punctata; Melo.: Epicauta pennsylvanica ; | 

Curculion. : Centrinus picumnus. i 

Hemiptera (4) — Corimelaen.: Corimelaena pulicaria; Lygae.: ) 

Lygaeus ; Caps. : Lopidea f q ; Acanthi. : Triphleps. i 

Taenidia integerrima (12: 459-60).— Blooms April 27-June ' 
14 ; 113 visitors observed, May 10-June 3 ; Mis, Y. ^ 



CHARLES ROBKRTSOy 211 

Lonp^-tongued Bees (14) — Megachil.: Alcidamea simplex 9, 
Ceratosmia $; Ceratin.: Ceratina $, Z^odontomeriw (f ; Bomb.: 
Bombias separatus $; Ap.: Apis; Somml.: Centrias americaniui (^ 9, 
Gnathias cuneatus $, ovatus $, Holonomada MffnbiliM 9. Nomad* 
cressonii (^, denticulata $, sayi $, Xanthidium luteolura 9- 

Short-tonpued Bees (33) — Prosopid.: l*rost)piM illinoenaia ^ 9. 
pygmaea <^ 9. «*'• siiniculae 9. »«>'» 9. "*^ ziziae ^T 9; Coiift-' Col- 
letes aestivalis o"; Ualict. (9): Autjoehlora fervidn. Chlornlictuji 
nymphaearuni, sparsus se, U\, tejrularis, veniatus ho, r«'phyruji, 
Evylaeus foxii se, peetoralis, 4-maculatus se, Odontalictus fq, Oxy- 
stojflossa confiisa. pura, similis so, ab, Seladonia f q ; Sph««co<lini : 
Machaeris stypia 9, Proteraner (^, Sphecodes ar\'en8i8 9, Sphecodium 
pimpinellae 9. type; Andren.: Andrena nasonii (^ 9. ^> *^i Opan- 
drena cressonii cT 9» sc, personata ^ 9. ^c, fq, serotina (^ 9. *<^i t\z\Ac 
9, 80, ab, Trachandrena elaytoniae ^f 9. ^c, crataegi <^ 9. *c. heraclci 
9, niida 9. 

Other Hymenoptera (21) — Crabron.: Clytochrysua, Soleniua, 
Xestocrabro trifaseiatus; Sphcc: Chalybion, .Sceli|)hr()n, Sphex vul- 
garis; Pompil.: Anoplius illinoensis; Eumtn.: Aneistrocerus tigris, 
Euraenes fraternus, Leionotus anorinis, elypeatus, foramiiiatuH, hi»- 
trionalis, Ulinoensis, scrophulariae, Syinniorphus dfbilis; Tipki.: 
Tiphia clypeata; Chrysid.: Chrysis intrieata; Evani.: Poenua in- 
certus; Ichneumon.: Angitia, Pharsalia. 

Diptera (34) — Stratiomy.: Nemotelus; Bombyli.: Anthrax sinu- 
osa f, Toxophora; Empid.: Empis levicula, Parempis; Syrph.: 
Baccha fuscipennis, Chilosia petulea, Mesogramma geminata, mar- 
ginata, Orthoneura nitida, Sphaerophoria, Syritta fq, Syrphua 
americanus, ribesii; Conop.: Oncomyia, Zodion fulvifrons; Tarhin.: 
Cistogaster oecidua, Leucostonia nigricornis, Linnarniyia. Ocyp- 
tera lata, tenuis, Peleteria, Trichophora; Sarcophuj.: Ilelicobia 
helicis, Muse: Lucilia sericata. sylvarum ; Anthmny.: Coenosia an- 
tica; Ortal.: Rivellia pallida; Sapromyz.: Sapromyza vulgari.s; 
Seps.: Sepsis; Oscin.: Chlorops assimilis, mellea, Elachiptcra flavida 
fq, Hippelates plebejus. 

Lepidoptera (1) — Nytnphal.: Charidryas. 

Coleoptera (9) — Hister.: Ilister subrotundus; Malarh.: Antho- 
comus; Chrysomel: Babia; Bruch.: Bruchus bivulneratuM. hibiaci ; 
Mordell.: Mordella marginata, Mordollistena aspenia ; Curruhon.: 
Centrinites, Limnobaris. 

Ilemiptera (1) — Corimelaen.: Corimelaena laterali«. 

Thaspium aurcum atropurpurem (12:454).- H'. ...",, M »v 0- 
July 1; one visitor obsencd, June 9; Mis. H. 
Diptera. — Empid.: Empis loripedis. 



212 FLOWEBS AND INSECTS— XXVI 

Thaspium aureum trifoliatum (12:459-60).— Blooms May 13- 
July 18 ; 60 visitors observed, June 5-17 ; Mis, Y. 

Long-tongued Bees (4) — Megachil.: Trypetini: Neotrypetes 
truncatus <^, Coelioxyini : Coelioxys sayi (^ ; Nomad. : Nomada den- 
ticulata $, sayi $. 

Short-tongued Bees (21) — Prosopid.: Prosopis crataegi J^, illi- 
noensis J* ?, pygmaea J* ?> saniculae J* 5, sayi <^ $, ab, thaspii 
$, type, ziziae J* $, fq; Collet.: CoUetes eulophi c^; Halict. (?) : 
Augoeblora viridula se, Chloralictus sparsus se, tegularis sc, Evy- 
laeus peetoralis sc, Halictus lerouxii, Oxystoglossa pura, similis sc ; 
Sphecodini : Proteraner J* ; Andren. : Andrena carlini $, Opandrena 
cressonii $, sc, personata (^, ziziae $, sc, ab; Panurg.: Hetero- 
sarus 5. 

Other Hymenoptera (10) — Crabron.: Pseudocrabro, Solenius; 
Sphec: Sphex vulgaris; Eumen.: Ancistrocerus unifasciatus, 
Eumenes fraternus, Leionotus foraminatus, fulvipes, scrophulariae, 
Zendalia acolhuus; Evani.: Foenus tarsatorius. 

Diptera (20) — Empid.: Empis loripedis; Syrph.: Allograpta, 
Baccha fuscipennis, Mesogramma geminata, marginata, Paragus 
bicolor, tibialis, Sphaerophoria, Syritta, Volucella vesiculosa, Xan- 
thogramma flavipes ; Conop. : Oncomyia, Zodion nanellum ; Tachin. : 
Cistogaster occidua, Exorista confinis, Leskiomima prima, Sipbona ; 
8arcophag.: Helicobia helicis; Muse: Phormia regina; Seps.: 



Lepidoptera (1) — Lycaen.: Cyaniris. 

Coleoptera (2) — Ceramhyc: Euderces; Bruch.: Bruchus cruen- 
tatus. 

Hemiptera (2) — Lygae.: Lygaeus; Caps.: Lopidea. 

Zizia aurea (12:451-2, 459-60).— Blooms April 18-June 9; 
179 visitors observed. May 3-26 ; Mis, Y. 

Long-tongued Bees (19) — Stelid.: Microstelis (^, Megachil.: 
Alcidamea simplex ^^ $, Osmia atriventris 5, sc, pumila $ ; Ceratin. : 
Ceratina J* ?, ab; Bomb. ($) : Bombias auricomus, scutellaris, sep- 
aratus, Bombus americanorum, consimilis, impatiens ; Ap. : Apis sc ; 
Nomad.: Centrias americanus ^T, Gnathias ovatus $, Holonomada 
affabilis $, superba (^ $, Nomada dentieulata ^ ?, sayi (^ ? ; Eucer. : 
Tetralonia dilecta J* $. 

Short-tongued Bees (42) — Prosopid.: (^ 2) ; Prosopis pygmaea 
in cop, sayi, ziziae fq, type; Collet.: CoUetes aestivalis J* ?, ab, in- 
aequalis 5; Halict. ($) : Agapostemon radiatus, Augochlora fervida, 
viridula, Chloralictus albipennis se, type, coreopsis, pilosus sc, fq, 
pruinosus sc, sparsus sc, fq, tegularis sc, type, versatus sc, ab, 



CHARLES ROBERTSON 213 

zephyrus, Curtisapis coriacea, forbesii, EN-jiaeus foxii, pectoralia 
sc, 4-maculatus, Ilalictus lerouxii fq, parallelus, Odontalictua sc. fq, 
Oxystoglossa confusa sc, fq, pura, similiH sc, ab, Paralictiw platy- 
parius type, simplex, Seladonia sc, ab; Sphecodini : Proteraner cT 9, 
Sphecodes arveiisis $, Si)hecodium cressonii $, type; Andrtn.: 
Andrena illinoensis (^, nasonii cT, sayi $, Opandrcna cressonii (^ ^, 
sc, fq, ziziae (^ $, sc, ab, in cop, type, Trachandrcna claytoniac $, 
crataegi <^ $, sc, fq. forbesii $, nuda $. 

Other Ilymenoptera (32) — Crabron.: Clytochrysus, Ectemuiui 
fq, Pseudocrabro, Solenius ab, Xestocrabro G-niaculatus, teianus, 
trifasciatus fq; OxybiL: Oxybelus 4-notatus; Pompil.: Anopliu« 
illinoensis, Episyron, Psammochares tenebrosus; Vespi.: Polistes 
variatus; Eumen.: Ancistrocerus carapestris, tipris, Eumenes 
fraternus, Leionotus anormis fq, clypeatus fq, foraminatns, hi»- 
trionalis, illinoensis, mcgaera, perennis, scrophulariae, vagus, ziziae 
ab, Symmorphus walshianus; Tiphi.: Tiphia clypeata; Chrysid.: 
Gonochrysis; Fiyit.: Eucoilidia; Ichneumon.: Cremastus epagoges, 
Exyston ab; Tcnthredin.: Pseudosiobla. 

Diptera (6o) — Mycetophil.: Sciara atrata; Bibion.: Bibio albi- 
pennis; Simiili.: Siraulium; Stratiomy.: Allognosta obscurivcntris, 
Nemotelus; Bombyli.: Aldrichia; Empid.: Empis distans, loripedis; 
Syrph.: Chilosia petulca, Chrysogaster Ontario, Eristalisdimidiatus, 
latifrons, Ilelophilus latifrons, similis, ^lesogramma marginata, 
Orthoneura pictipennis, Paragus bicolor, tibialis, Sphaerophoria, 
Sphegina rufiventris, Syritta, Syrphus ribesii, Tropidia mamillata ; 
Conop.: Oncomyia, Zodion fulvifrons; Tachin.: Alophora acncoven- 
tris, Apinops, Ceratomyiella conica type, Cistogaster occidua ab, 
pallasi, Leucostoma atra type, Linnacmyia, Ocyptera lata, Pachy- 
ophthalmus signatus, Phorantha magna, i)uri)urasccns, Siphona, 
Sturmia nigrita type, Tachina rustiea, Triehopoda pcnnipcs; 
Sarcophag.: Ilelicobia helicis, Sarcophaga sinuata; Muse: Lucilia 
caesar, sylvarum, Morellia, Phormia regina, PseudopyrcUia ; 
Anthomy.: Calythea, Cocnosia lacteipennis, Hylemyia inomata ab, 
Phorbia acra ab, cinereUa, platura; Ortal.: Rivellia pallida; Seps.: 
Sepsis; Oscin.: Chlorops assimilis, proxima, pulvcrca, Hippclatea 
flavipes, plebejus, ^leromyza, Oscinis soror, Siphonclla cineroa ; 
Agroviyz.: Agromyza acncovcntris. 

Lepidoptcra (5) — Symphal: Phyciodes; Lyc(un.: EvercB, 
Heodes; Papilion.: Eurjmus; Noctu.: Plusia simplex. 

Coleoptera (13) — Coccinell.: Coccinella sanguinea. Mepilla ; 
Erotyl.: Languria; Ilister.: Hister americanus; Lampyr.: Tolo- 
phorus bilincatus, flavipes; Scarabae.: Onthophagus; Chrysomei: 



214 FLOWERS AND INSECTS— XXVI 

Ceratoma, Diabrotica 12-punctata, vittata; Curculion.: Centrinites, 
Centrinus picmniius; Ceramhyc: Acmaeops nigripennis. 

Hemiptera (3) — Pent atom.: Euschistus ictericus; Caps.: Lygus, 
Plagiognathus. 

May 10, 1910, the following 65 species and 300 individuals were 
taken as they came : 

Long-tongued Bees (4: 8) — Bomh.: Bombias separatus 1, 
Bombus amerieanorum 1; Ap.: Apis 5, Nomad.: Holonomada 
superba 1. 

Short-tongued Bees (22: 189) — Prosopid.: Prosopis pygmaea 5, 
ziziae 1; Collet.: Colletes aestivalis 18; Halict.: Agapostemon 
radiatus 3, Augochlora fervida 1, viridula 1, Chloralietus coreopsis 
1, pilosus 6, tegularis 1, versatus 34, Evylaeus pectoralis 1, Halictus 
lerouxii 11, parellelus 1, Odontalictus 13, Oxystoglossa confusa 5, 
similis 17, Seladonia 15; Andren.: Opandrena cressonii 13, ziziae 
27, Trachandrena claytoniae 1, crataegi 13, forbesii 1. 

Other Hymenoptera (14: 27) — Crabron.: Clytochrysus 1, Ec- 
temnius 1, Solenius 6, Xestocrabro texanus 1 ; Vesp. : Polistes 
variatus 2; Eumen.: Ancistrocerus tigris 2, Eumenes fraternus 1. 
Leionotus anormis 2, clypeatus 2, foraminatus 3, histrionalis 2, 
megaera 1 ; Tiphi. : Tiphia clypeata 1 ; Ichneumon. : Exyston ab- 
dominalis 2, 

Diptera (21: 69) — Bihion.: Bibio albipennis 6; 8yrph.: Eris- 
talis latifrons 1, Helophilus latifrons 2, Mesogramma marginata 4, 
Orthoneura pictipennis 3, Paragus bicolor 1, tibialis 3, Sphaero- 
phoria 4, Sphegina rufiventris 1, Syritta 1; Conop.: Zodion fulvi- 
frons 4; TacJiin.: Cistogaster occidua 5, pallasi 5, Siphona 2, 
Tachina rustica 1 ; Sarcophag. : Helicobia helicis 1 ; Muse. : Lucilia 
caesar 1, sylvarum 5, Pseudopyrellia 1 ; AntJiomy. : Hylemyia inor- 
nata 1, Phorbia acra 17. 

Lepidoptera (3: 6) — Nymphal: Phyciodes 1; Lycaen.: Heodes 
2 ; Noctu. : Plusia simplex 3. 

Hemiptera (1: 1) — Pentatom.: Euschistus ictericus 1. 

Urticaceae ( anemophilous ) 
Ulmus americana. — One visitor observed, March 26. 
Long-tongued Bees (1) — Ap.: Apis c, ab. 

Ulmus fulva. — One visitor observed, March 23, April 9, 
Long-tongued Bees (1) — Ap.: Apis c, ab. 

Yalerianaceae 
Valerianella radiata. — Blooms May 12-June 11 ; 24 species and 
104 individuals taken on eight days, May 12-June 6 ; Mis, W. 



CHARLES UOUElilSOS 



lil5 



Long-tongued Bees (5: \^)—Bomh.: liombus consimilis 9, 1; 
Ceratin.: Ceratina $, 7, Zaodontomerus (^, 2; Sttliil.: Microsjtelia 
(^ $, 2; Megachil.: Osmia pumila $, 1. 

Short-tongucd Bees ($, 5: GO) — //<//jV/.; Kvylaeus pecturalU sc, 
1, Odontalietus 1, Oxystoglossa similis 5;"); Prosopid.: Proiiopia 
pygmaea 1, ziziae 2. 

Other Hymenoptera (4: 1)—Eumen.: Lcionotus clypcatua 1, 
illinoensis 3, vagus 1, Zendalia acolhuus 2. 

Diptera (9: 23) — Syrph.: Mesograinma nmrginata 5, Paratnu 
tibialis 2, Spliaerophoria 1; liombyli.: Toxophora 2; Tarhin.: 
Apinops 2, Cistogastcr oeeidua 1, pallasii 8; Sarcophag.: llelicobia 
helicis 1; Anthomy.: Phorbia acra 1. 

Lepidoptera (1: 1) — Nymphal.: Charidrjas 1. 

Verbenaceae 

Lantana camara (cult). — Ten visitors observed, September 
2.1^5 ; .Alas, Y. 

Birds {l)—Trochil.: Trochilus. 

Long-tongued Bees (1) — Bomb.: Bonibus americanorum cf, 

Lepidoptera (8) — Nymphal.: Anosia; Papilion.: Eurymus fq, 
Ileraclides, Pieris fq, Pontia; Ilcsperi.: Ancyloxypha, Epargyreus: 
Noctu.: Plusia simplex. 

Lippia lanceolata. — Blooms June 22-September 15; 56 species 
and 375 individuals observed, June 28-Septembcr 11; Mis, W. 

Long-tongued Bees (7:65) — Bomb.: Bombus americanorum 5f 
5; Megachil.: Megachilini: Megachile brevis cT $, 32; Coelioxyini: 
Coelioxys 8-dentata <^ $, 3; Epcol.: Triei)oolus concolor cJ* $, 16, 
lunatus $, 2; Eucer.: Florilegus (^ $, 6, Melissodes autuninnlis (^, 1. 

Short-tongued Bees (12:78) — Halict.: Agapostemon viridulus 
5, 1, Augochlora fervida $, 4, Chloralictus nympliaearum cT, 1, 
pilosus (^ $, 3, tegularis $, sc, 12, Evylaeus pectoralis $, sc, 7, Odon- 
talietus $, 1, Oxystoglossa confusa $, 3, pura $, 1, similis cT 9. «<?. 
42, Seladonia $, 1; Panurg.: Calliopsis andreniformis ^ $, sc, 2. 

Other Hymenoptera (7:27) — Sphec: Priononyx atrata 1, 
Sphex nigricans 11, pictipennis 3, vulgaris 5; Bemhic: Bicyrtes 
ventralis 4; Eumcn.: Leionotus anormis 2, clypeatus 1. 

Diptera {21 :1U)— Syrph.: Eristalis latifrons 2, Ilclophilua 
latifrons 1, similis 2, ^lesogramma marginata 13, Orthoncura nitida 
1, Parapus bicolor 2, Spliaerophoria 3, Syritta 1, Tropidia quadrata 
1; Bombyli.: Exoprosopa fasciata 7, fascipennis 11, SyHt<>«'chu« 7; 
Conop.: Conops brachyrrhynchus 4; Tachin.: Apinops 1, ArchytaJi 
analis 19, Ocyptera dosiades 1. tenuis 7, Pachyophthuhnus floridcii- 
sis 1, Siphoplagia anomala 6, Spallanzania 19, Trichophora 5. 



216 FLOWERS AND INSECTS— XXVI 

Lepidoptera (9: 91) — Nymphal.: Phyciodes 40; Lycaen.: Chry- 
sophanus 3, Everes 3; Papilion.: Eurema 1, Eurymus 1; Hesperi.: 
Ancyloxypha 21, Hylephila 1, Limochores taumas 17, Polites 5. 

Verbena angustifolia. — Blooms May 22-July 18; 7 visitors 
observed, June 21- July 11 ; Mas, K. 

Long-tongued Bees (4) — Ceratin.: Ceratina $; Megachil.: Mega- 
cMlini : Megaehile brevis (^ $, f q ; Coelioxyini : Coelioxys 8-dentata 
2; Epeol.: Argyroselenis minimus $, type. 

Short-tongued Bees (1) — Halict.: Oxystoglossa similis J*. 

Other Hymenoptera (1) — Sphec: Sphex pictipennis. 

Lepidoptera (1) — Hesperi: Pholisora eatullus. 

Verbena bracteosa. — Blooms June 6-September 24; 4 visitors 
observed, June 30, September 18 ; Mis, R. 

Short-tongued Bees (2, $) — Halict.: Chloralictus tegularis; 
Panurg.: Calliopsis andreniformis. 

Lepidoptera (2) — Lycaen.: Everes; Hesperi.: Hesperia. 

Verbena hastata (5:67-8). — Blooms June 29-September 27; 
69 visitors observed, July 12-September 18 ; Mas, R. 

Long-tongued Bees (30) — Ap.: Apis ab; Bomb.: Bombias auri- 
comus (^, Bombus americanorum c^ ^, f q, impatiens <^ $, sc, Psithy- 
rus laboriosus <^; Ceratin.: Ceratina 5; Megachil.: Megachilini: 
Megacile brevis ^ $, petulans $, Xanthosarus J*; Coelioxyini {^ $, 
fq) : Coelioxys 8-dentata, sayi; Epeol.: Epeolus bifasciatus J* $, fq, 
Triepeolus concavus <^, coneolor (^ $, fq, cressonii (^ 5, f q, helianthi 
(^, lunatus J* 5, pectoralis J*, remigatus J*, simplex $; Eucer.: 
Epimelissodes atripes $, Melissodes agilis (^, autumnalis (^, bi- 
maculata c^, coloradensis ^, comptoides J*, nivea J* % similima J*, 
fq, trinodis (^, fq. 

Short-tongued Bees (11) — Halict.: Agapostemon radiatus <^ % 
Augochlora fervida <^, Chloralictus pruinosus <^, zephyrus <^, 
Curtisapis coriacea <^, Halictus lerouxii (^ % Odontalictus $, Oxy- 
stoglossa confusa J*, ab, Seladonia cf $, ab; Panurg.: Calliopsis 
andreniformis $, sc, Verbenapis J* % sc, fq. 

Other Hymenoptera (9) — Sphec: Ammobia ichneumonea, 
Prionoyx atrata, Sphex gracilis fq, in cop, nigricans, pictipennis, 
procera; Bemhic: Bembix nubillipennis ; Scoli.: Scolia bicincta; 
Vesp. : Vespula maculata. 

Diptera (11) — Bomhyli.: Exoprosopa fasciata ab, fascipennis, 
Geron rufipes, Sparnopolius, Systoechus f q, Systropus f q ; Conop. : 
Physocephala texana fq, tibialis, Stylogaster biannulata fq; 
Tachin. : Archytas analis ; Sarcophag. : Helicobia 4-setosa. 



CHARLES ROBERTSON 217 

Lepidoptera (6) — Papilion.: Eurymus, Pontia; Ilesperi.: An- 
cyloxypha, Epargyreus, Pholisora catullus; Ctenuch.: Scepsis. 
Coleoptera (1) — Lampyr.: Chaiiliognathus penusylvanicuM fq. 
Hemiptera (1) — Caps.: Calocoris. 

Verbena stricta (5:67). — Blooms June 5-Septcinbcr 20, 120 
visitors observed, June 19-September 15; Mas, R. 

Long-tongued Bees (59) — ^Ip.; Apis ab; Bomb.: Bombia-s auri- 
comus c^ $ $, scutellaris $, separatus (^ $, Bombus americanorum 
5, consimilis §, impatiens (^ ^, ab, ridingsii (^ ^, Psithynis lubori- 
osus cT, variabilis (^ $; Ceratin.: Ceratina $, se, ab, ZaodoutomcruM 
(^; St did.: Anthidium psoraleae cT, Dianthidium ^T, type; Mega- 
chil.: Osmiini: Aleidamea simplex $, sc, Asiimeadiella 9; Mega- 
chilini (c^ $) : Cbelostomoides, Mogaeliiie brevis ab, generos^i fq, 
mendica ab, petulans ab, 6-dentata, Oligotropus ab, Sayapis .sayi 
ab, Xanthosarus fq ; Coelioxyini : Coelioxys alternata c^, fq, germana 
(^ $, modesta (^ $, ab, 8-dentata $, sayi (^ $, fq ; Xylocop.: Xylocopa 
2; Nomad.: Cephen $, Holonomada afTabilis $; Epeol.: Epeolus 
bifasciatus <^, Triepeolus concavus J* $, f(i, concolor (^ $, ab, cres- 
sonii (^ $, ab, donatus $, lunatus <^ $, ab, nevadensis cT 9, remigatuB 
(^ $, fq, simplex cT $, fq ; Eucer.: Anthedon $, Epimeli.ssodcs atripea 
c? $, fq, obliqua J* $, ab, Florilegus ^^ $, sc, fq, Melissodos agilis (^ 
9, fq, bimaculata (;^ $, ab, in cop, coloraden.sis (^, comptoides <^ 9, 
fq, coreopsis $, petalostemonis $, simillima 9» trinodis (^, variabilis 
(^ 9, fq, vernoniana J* $, ab, in cop, Peponapis <^, Tetralonia dilecta 
$; Emphor.: Emphor <^. 

Short-tongued Bees (11) — Halicf.: Agapostomon radiatus <^ $, 
fq, splendens (^ $, texanus J* $, viridulus ^^ $, f(i, Ilalictus lerouxii 
(^, Odontalictus $, Oxystoglossa confusa (^ $, similis $; Sphecodini : 
Sphecodes minor $; Panurg.: Calliopsis andreniformi.s 9. Verl>en- 
apis (^ $, sc, fq, in cop. 

Other Ilymenoptera {5)—Sph€c.: Sphex nigricans, proccra, 
vulgaris; Bemhic: Bembix spinolae; Scoli.: Elis 5-cincta. 

Diptera (15) — Syrph.: Baccha clavata. Eristalis tenax; Seme- 
strin.: Rhynchocephalus fq; Bomhyli.: Anthrax par\'icornis ab, 
Bombylius atriceps, Exoprosopa fasciata ab. fascipennis, CJeron 
rufipes ab, Systoechus fq; Conop.: Physocephala texana, tibialis, 
Stylogaster biannulata fq, neglecta, Zodion fulvifrons, obliquefas- 
ciatum. 

Lepidoptera (30) — Nymphal: Anosia, Argynnis, EuptoietA, 
Phyciodes, Vanessa huntera ; Lycaen.: Cyaniris. Everes, Uranot«i; 
Papilion.: Callidryas, Euphoeades, Eurema, Eurymus, Iphiclidrt, 
Laertias, Pieris, Pontia ab; Ilesperi.: Ancyloxypha, Atalo|)cd«, 



218 FLOWERS AND INSECTS— XXVI 

Atrytone delaware ab, Epargyreus fq, Hesperia, Limochores 
taumas ab, Pholisora catullus, hayhurstii fq, Polites, Thanaos 
juvenalis, martialis, persius, Thorybes bathyllus ; Sphing. : Hemaris 
axillaris. 

On nine days, July 10-August 7, 1913, 58 species and 450 in- 
dividuals were taken on the flowers, as follows: — 

Long-tongued Bees (24:285) — Ap.: Apis 12; Bomb.: Bombias 
separatus 1; Ceratin.: Ceratina 25, Zaodontomerus 1; Megachil.: 
Megaehilini : Megachile brevis 38, generosa 1, mendica 8, petulans 4, 
Oligotropus 2, Sapapis sayi 11 ; Coelioxyini : Coelioxys alternata 3, 
modesta 15, sayi 5; Epeol.: Triepeolus concavus 1, concolor 72, 
cressonii 8, lunatus 5, remigatus 1, simplex 2; Eucer.: Epimelis- 
sodes obliqua 8, Melissodes bimaculata 32, eoloradensis 1, comptoides 
2, vernoniana 27. 

Short-tongued Bees (5: 12) — Halict:. Agapostemon radiatus 3, 
viridulus 2, Oxystoglossa confusa 3, similis 3; Panurg.: Ver- 
benapis 1. 

Other Hymenoptera (4:22) — Sphec: Sphex nigricans 3, pro- 
cera 17, vulgaris 1; Bemhic: Bembix spinolae 1. 

Diptera (7:28) — Bombyli.: Anthrax parvicornis 1, Exo- 
prosopa f asciata 17, f ascipennis 1, Geron rufipes 3, Systoechus 3 ; 
Conop.: Stylogaster neglecta 2, Zodion fulvifrons 1. 

Lepidoptera (18:103) — Nymphal.: Argynnis 1, Phyciodes 2, 
Vanessa huntera 2; Lycaen.: Cyaniris 1, Everes 2; PapiUon.: 
Eurema 2, Laertias 3, Pontia 7; Hesperi.: Ancyloxypha 2, Atry- 
tone delaware 62, Epargyreus 5, Hesperia 1, Limochores taumas 1, 
Pholisora hayhurstii 7, Polites 1, Thanaos martialis 1, Thorybes 
bathyllus 1; Sphing.: Hemaris axillaris 2. 

Verbena urticaefolia (5:68). — Blooms June 19-October 5; 59 
visitors observed, July 11-September 2 ; Mis, W. 

Long-tongued Bees (13) — Ap.: Apis; Bomb.: Bombus ameri- 
canorum <^ ^, impatiens ^, Ceratin.: Ceratina $, sc; Megachil.: 
Trypetini : Neotrypetes truncatus 5 ; Megaehilini : Megachile brevis 
^ % mendica ^ 5; Coelioxyini: Coelioxys sayi J* $, fq; Nomad.: 
Cephen 5; Epeol.: Epeolus bifasciatus J* $, Triepeolus concolor ^ 
% cressonii <^ ; Eucer. : Melissodes bimaculata $. 

Short-tongued Bees (15) — Halict.: Agapostemon radiatus <^ $, 
fq, Augochlora fervida J* $, viridula 5, Chloralictus pilosus J* $, 
versatus $, Evylaeus nelumbonis $, pectoralis $, Halictus lerouxii 
c? $7 f^j Odontalictus J* $, fq, Oxystoglossa confusa (^ $, fq, pura J*, 
similis (^ $, fq, Seladonia ^ $, ab ; Panurg. (^ $, sc, f q) Calliopsis 
andreniformis, Verbenapis in cop. 



CHARLES HObERTSON 219 

Other HjTnenoptera {'^)—Sphec.: Sphex gracilis in cop, vul- 
garis; Scoli.: Elis 5-eincta, Scolia bieincta. 

Diptera (21) — Syrph.: Baccha clavata, Mesogramma geminaU, 
Sphaerophoria, Syritta fq; Empid.: Parompis; Bombyli.: Anthrax 
fulvohirta, Exoprosopa fascipennis, (Jcron rufipcs, Systropun, 
Toxophora; Conop.: Oncomyia, StylojrasttT ni'jrii'cta, Zoilion 
obliquofaseiatum ; Tachin.: Archytas analis, Cistogastcr occidua, 
Epigrimyia {^eniculata fq, Phorantha humeralis, Siphona, Spallan- 
zania, Trichophora fq; Muse: Compsomyia. 

Lepidoptera (6) — Nymphal.: Phyciodcs; Lynun.: Evcroi fq, 
Uranotes; Papilion.: Eurema, Pieris, Pontia. 

ViOLACEAE 

Hybanthus concolor (16: 156-7).— Blooms April SO-May 30; 
1 visitor observed, JMay 7 ; Mi, Y. 

Short-tongued Bees (1) — Halict.: Oxystoglossa confusa $. 

Viola cucullata (2: 173).— Blooms March 17-May 21; 27 vis- 
itors obscnod, April 9-May 21 ; Ma, R. Insects not reversing on 
the flowers are marked n. 

Long-tongued Bees (14) — Ap.: Apis; Bomb. (^, n) : Bombiaa 
auricomus, separatus, Bombus americanorum, inipaticn.s; Ccratin.: 
Ceratina (^, n; Mcgachil.: Centrosmia $, Ccratosmia (j" $, Osmia 
collinsiae (^, pumila J* $, sc, ab; Nomad.: Holonomada affabili-s 9; 
Eucer.: Tetralonia belfragei J* $, dilecta <^; Anthophor.: Antho- 
phora <^, n. 

Short-tongued Bees (5) — Halict. ($) : Chloralictu.s crcjMonii n, 
type, Evylaeus foxii, Seladonia n; Andren.: Andrcna carlini $, 
lomelissa violae J* $, sc, ab, type. 

Diptera (2, n) — Bombyli.: Bombylius major, pulchellus. 

Lepidoptera (6) — Nymphal.: Vanessa huntcra; Papilion.: 
Eurymus, Pieris; Hesperi.: Thanaos brizo, juvcnalis, martialis. 

Viola pedata (2: 174-5).— Blooms April i:i-May 27; 14 visitoni 
observed, April 19-May 20 ; Ma, R. 

Long-tongued Bees (6) — Ap.: Apis; Bomb. (9): Borabiaa 
separatus, Bombus americanorum ab, impatiens; Eucer.: Tetra- 
lonia dilecta (^ $; Anthophor.: Anthophora 9. sc. a''- 

Diptera (1) — Syrph.: Eri-stalis latifron.s fsp, n. 

Lepidoptera (7) — Nymphal.: Vanes.sa cardui ; Papilion.: Eury- 
mus, Pieris; Ilespcri.: Thanaos brizo ab, icelus, juvenalia; Noetu.: 
Plusia simplex. 

Viola pedatifida.— Blooms April 17-May 20; 1 visitor objiervcd, 
May 15 ; Ma, R. 



220 FLOWERS AND INSECTS— XXVI 

Long-tongued Bees (1) — Eucer.: Tetralonia dilecta (^. 

Viola pubescens (2: 172-3).— Blooms April 9-May 7; 22 vis- 
itors observed, April 16-30 ; Mi, Y. 

Long-tongued Bees (7) — Bomh.: Bombus amerieanorum $, n; 
Ceratin. : Ceratina $ ; Megachil. : Osmia atriventris $, sc, ab, pumila 
(^ 2, so, ab, in cop ; Nomad. : Nomada sayi $ ; Eucer. : Tetralonia bel- 
fragei $; Anthophor.: Anthopbora $. 

Sbort-tongued Bees (7, 5) — Halict.: Chloralictus pilosus sc, 
sparsus sc, versatus, Curtisapis coriacea, Oxystoglossa confusa sc, 
ab, Seladonia ; Andren. : Andrena carlini sc. 

Diptera (5) — Syrph. (fsp, n) : Melanostoma obseurum, Meso- 
gramma marginata, Paragus tibialis; Bombyli.: Bombylius major 
ab ; Tachin. : Gonia capitata. 

Lepidoptera (3) — Papilion.: Eurymus; Hesperi.: Thanaos 
juvenalis, martialis. 

Viola sagittata, — Blooms April 15-May 24 ; 3 visitors observed, 
April 25-29; Ma, E. 

Long-tongued Bees (1) — Megachil.: Osmia pumila J*, 1. 
Short-tongued Bees (1) — Andren.: lomelissa <^ $, sc, 4. 
Lepidoptera (1) — Papilion.: Eurymus 1. 

Viola striata (2:174). — Blooms April 12-June 8; 19 visitors 
observed, April 16-May 20; Ma, W. Visitors not reversing are 
marked n. 

Long-tongued Bees (13) — Ap. Apis n; Boml. ($, n) : Bombias 
auricomus, separatus, Bombus amerieanorum, consimilis, im- 
patiens; Ceratin.: Zaodontomerus c^, n; Megachil. (sc) : Diceratos- 
■niia $, Osmia atriventris 5, collinsiae (^ $, fq, pumila $, f q ; Eucer. : 
Tetralonia belfragei ^ $, f q, n, dilecta (^, n, 

Short-tongued Bees (3, $) — Halict.: Curtisapis coriacea; An- 
dren. : Andrena carlini, lomelissa sc, f q. 

Diptera (1) — Bombyli: Bombylius major n. 

Lepidoptera (2, n) — Papilion.: Eurymus; Hesperi.: Thanaos 
persius. 

VlTACEAE 

Psedera quinquefolia. — Blooms June 13-July 27; 1 visitor 
observed, June 22, July 27 ; Mas, Y. 

Long-tongued Bees (1) — Megachil.: Megachile -mendica (^ ?, 
sc, ab. 

Vitis cordifolia. — Blooms June 5-22; 3 visitors observed, June 
15 ; Mas, Y. 



CHARLES ROBEIiTSOy 221 

Long-tongued Bees {3)—Ap. Apis c; liomb.: Bombia* ■eparatu* 
$, c; Eucer.: Tetralonia dilecta 9- 

Vitis vulpina.— Blooms May I'J-June 1 ; 3 visitorn obaerred. 
May lG-29; :\Ias, Y. 

Long-tongued Bees (3, $, c)—Bumh.: BombiaH neparatiw, Bom- 
bus anicricanorum, impatiens. 

Flowers and In»:cts pAi'uts Cited 

1. Insects and Asclepiads. Bot. G. 12:207-16, 244-50. 1887. 

2. Fls. I-in. Bot. G. 14:120-6, 172-8, 297-304. 1889. 

3. Fls. IV, V. Bot. G. 15:79-84, 199-204. 1K90. 

4. Fls. VI. Bot. G. 16:Gr>-71. 1891. 

5. Fls. VII-IX. Bot. (;. 17:65-71, 17:i-9, 269-76. 1892. 

6. Fls. X, XL Bot. G. 18:47-54, 2G7-74. 1893. 

7. Fls. XII. Bot. G. 19:10:M2. 1894. 

8. Fls. Xin. XIV. Bot. G. 20:104-10, 139-49. 1895. 

9. Fls. XV-XVII. Bot. G. 21 : 72-81, 266-74 ; 22 : 154-65. 1896. 

10. Fls. XVIII. Bot. G. 25 : 229-45. 1898. 

11. Fls. XIX. Bot. G. 28 : 27^5. 1899. 

12. Fl.s. Umbellifcrac. St. L. A. 5:449-60. 1890. 

13. Fls. Asclep. to Scroph. St. L. A. 5:569-98. 1891. 

14. Fls. Labiatae. St. L. A. 6: 101-31. 1892. 

15. Fl.s. Rosaceae and Compositac. St. L. A. 6:435-80. 1H94. 

16. Fls. Contributions. St. L. A. 7: 151-79. 1896. 



XX 

\x:i \\\. GiTL 15-. fcO.74