CHARLES ROBERTSON 167 
Long-tongued Bees (5)—Ap.: Apis sc, fq; Bomb.: Bombus 
americanorum 9, fq, impatiens 9; Ceratin.: Ceratina ¢; Nomad.: 
Centrias americanus ¢. 
Short-tongued Bees (15)—Halict. (2): Chloralictus sparsus, 
versatus, zephyrus fq, Halictus lerouxii, Odontalictus, Seladonia 
fq; Andren.: Andrena dunningii 9, se, fq, erythrogastra 4, sayi ¢ 
9, se, fg, Opandrena cressonii ¢ 9, miserabilis ¢ 9, se, ab, personata 
do, fq, Trachandrena claytoniae ¢, fq, crataegi ¢ 9, ab, type, hip- 
potes ¢. 
Other Hymenoptera (3)—Vesp.: Polistes pallipes, fq, variatus; 
Tiphi.: Tiphia elypeata, type. 
Diptera (25)—Stratiomy.: Microchrysa; Syrph.: Eristalis 
aeneus, dimidiatus, Helophilus similis, Mallota cimbiciformis, Meso- 
gramma geminata, Myiolepta strigilata fq, Pipiza nigribarba, 
Psilota, Syrphus torvus; Empid.: Empis avida type, Rhamphomyia 
priapulus, sordida; Bombyli.: Bombylius major, pulchellus ; Conop.: 
Myopa vesiculosa; Tachin.: Gonia capitata; Sarcophag.: Calliphora 
erythrocephala, Cynomyia, Sarcophaga sinuata; Musc.: Comp- 
somyia, Lucilia caesar, Morellia, Phormia regina, Pseudopyrellia fq. 
Lepidoptera (2)—Nymphal.: Anosia, Vanessa huntera. 
Coleoptera (6)—Cerambyc.: Molorchus fq, in cop; Chrysomel.: 
Diabrotica vittata; Coccinell.: Coccinella sanguinea, Hippodamea 
15-maculata; Oedemer.: Asclera puncticollis; Scarabae.: Euphoria 
fulgida. 
Crataegus crus-galli (15: 445-6).—Blooms May 1—June 1; 75 
visitors observed, May 17-29; Mis, W. 
Long-tongued Bees (9)—Ap.: Apis se, ab; Bomb. (2) : Bombias 
auricomus, separatus, Bombus americanorum, impatiens; Ceratin.: 
Ceratina ¢; Megachil.: Prochelostoma ¢, Anthemois 4; Eucer.: 
Tetralonia dilecta ¢. 
Short-tongued Bees (26)—WHalict. (9, sc): Chloralictus pilosus 
ab, sparsus ab, tegularis fq, versatus ab, zephyrus, Evylaeus 
foxii fq, pectoralis, Oxystoglossa similis fq, Seladonia ab; Prosopid.: 
Prosopis crataegi <4, illinoensis ¢, pygmaea ¢ 9, ab, saniculae ¢, 
ziziae ¢ 9, ab; Collet.: Colletes inaequalis 9, sc; Andren.: Andrena 
dunningii 9, se, erythrogastra 9, mandibularis 9, se, sayi 92, se, 
Opandrena cressonii, ¢ 9, se, fq, miserabilis ¢ 9, sc, ab, personata 
do 9, se, ab, Parandrena 9, Trachandrena claytoniae 9, se, fq, 
crataegi J 9, se, ab, forbesii 9, se. 
Other Hymenoptera (10)—Vesp.: Polistes pallipes; Eumen.: 
Ancistrocerus capra, tigris, Eumenes fraternus fq, Leionotus 
anormis, foraminatus, Symmorphus debilis, walshianus; Crabron.: 
Rhopalum scutellatum ; Pemphredon.: Cemonus. 
