CHARLES ROBERTSON 87 
truncatus ¢' 9; Megachilini: Megachile brevis 4, petulans d', Sayapis 
sayi 2, sc; Coelioxyini: Coelioxys alternata ¢ 2, 8-dentata 9°, sayi 
¢; Epeol.: Triepeolus concolor 9, cressonii ¢ 2, fq, helianthi ¢; 
Eucer.: Epimelissodes obliqua ¢ 9, se, ab, Melissodes agilis ¢ 9, 
fq, bimaculata ¢ 9, boltoniae 2, ¢, simillima 4, trinodis ¢ 9, se, 
fq, vernoniana ¢ 9. 
Short-tongued Bees (25)—Halict.: Agapostemon radiatus 0, 
Chloralictus pilosus ¢ 9, se, fq, sparsus 9, se, versatus 4 9, se, 
zephyrus ¢ 9, Curtisapis coriacea ¢ 2, Evylaeus pectoralis 9, se, 
ab, Halictus lerouxii 2, Odontalictus ¢ 9, se, ab, Oxystoglossa con- 
fusa 9, sc, pura 9, sc, similis 9, se, Seladonia ¢ 9; Collet.: Colletes 
americanys 9, sc, compactus 9, sc; Andren.: Pterandrena aliciae 
& 2, se, fq, rudbeckiae 9, se; Panurg.: Calliopsis andreniformis ¢, 
coloradensis ¢ 9, sc, Pseudopanurgus asteris 9, sc, compositarum ¢, 
labrosiformis 9, se, labrosus ¢ 9, se, ab, rudbeckiae ¢ 9, se, ab, 
in cop, type, rugosus ¢ Q, se. 
Other Hymenoptera (12)—Sphec.: Sphex gracilis, nigricans; 
Bembic.: Bembix spinolae, Bicyrtes ventralis, Stictiella; Scoli.: 
Elis interrupta, 5-cincta, Scolia bicincta; Vesp.: Polistes variatus; 
Eumen.: Leionotus arvensis; Ozybel.: Notoglossa americana; 
Ichneumon.: Exetastes suaveolens. 
Diptera (37)—Syrph.: Eristalis latifrons, transversus fq, Mal- 
lota cimbiciformis, Spilomyia longicornis, Volucella fasciata; 
Empid.: Parempis fq; Bombyli.: Anthrax fulvohirta, haleyon fq, 
Argyramoeba oedipus f, n, Exoprosopa decora, fasciata, fascipennis, 
Geron rufipes, Lepidophora, Phthiria cincta, Sparnopolius fq, Sys- 
toechus, Systropus, Toxophora; Conop.: Conops brachyrrhynchus, 
Onecomyia, Zodion obliquefasciatum; Tachin.: Apinops, Archytas 
analis, Cistogaster occidua, Epigrimyia geniculata ab, illinoensis 
type, Leskiomima secunda, Ocyptera tenuis, Peleteria fq; Senotainia 
trilineata, Siphoplagia anomala ab, Spallanzania, Trichophora ; 
Dezxi.: Ptilodexia; Musc.: Pseudopyrellia; Agromyz.: Eusiphona. 
Lepidoptera (7)—Nymphal.: Basilarchia archippus, Charidryas 
fq, Phyciodes fq; Lycaen.: Everes; Papilion.: Eurymus, Pontia; 
Hesperi.: Polites. 
Coleoptera (3)—Lampyr.: Chauliognathus pennsylvanicus ab; 
Melo.: Epicauta pennsylvanica f, n; Mordell.: Mordella margi- 
nata f, n. 
The following 23 visitors and 138 individuals were taken on the 
flowers on August 20, 24: 
Long-tongued Bees (5:7)—Bomb.: Bombias auricomus 1; 
Ceratin.: Ceratina 1; Megdchil.: Megachile petulans 1; Eucer.: 
Epimelissodes obliqua 2, Melissodes boltoniae 2. 
