CHARLES ROBERTSON 81 
Short-tongued Bees (13: 109)—Halict.: Agapostemon viridulus 
3, Chloralictus coreopsis 1, pilosus 18, versatus 32, Evylaeus pec- 
toralis 2, Halictus lerouxii 3, parallelus 1, Odontalictus 10, Oxysto- 
glossa confusa 10, similis 13; Prosopid.: Prosopis pygmaea 1; 
Collet.: Colletes aestivalis 4; Andren.: Pterandrena krigiana 11. 
Diptera (11: 72)—Syrph.: Eristalis dimidiatus 8, latifrons 1, 
Helophilus latifrons 1, similis 1, Mesogramma marginata 34, 
Sphaerophoria 3; Conop.: Oncomyia 2, Zodion fulvifrons 2; 
Tachin.: Cistogaster pallasii 1; Musc.: Lucilia sylvarum 1; 
Anthomy.: Phorbia acra 18. 
Lepidoptera (2: 2)—Nymphal.: Phyciodes 1; Papilion.: Eury- 
mus 1. 
Coleoptera (1:1)—Chrysomel.: Diabrotica 12-punctata 1. 
Hemiptera (1: 1)—Lygae.: Lygaeus 1. 
Lactuca canadensis.—Blooms June 22—September 6; 1 visitor 
observed, August 30; Mas, Y. 
Long-tongued Bees (1)—Megachil.: Xanthosarus Q, se. 
Lactuca floridana.—Blooms July 25—October 6; 15 visitors 
observed, August 17—October 6; Mas, R. 
Long-tongued Bees (8)—Ap.: Apis se, fq; Bomb.: Bombias 
auricomus %, Bombus impatiens 9%, se; Ceratin.: Ceratina 9; 
Megachil.: Megachile brevis ¢ 9, se, Xanthosarus 9; Hucer. (9, se) : 
Epimelissodes obliqua fq, Melissodes boltoniae. 
Short-tongued Bees (6, 2)—Halict.: Chloralictus pilosus ¢, n, 
sparsus ¢, n, Evylaeus pectoralis ce, n, Odontalictus se; Prosopid.: 
Prosopis ziziae, f, n; Collet.: Colletes americanus. 
Coleoptera (1)—Lampyr.: Chauliognathus pennsylvanicus fq. 
Lepachys pinnata (15: 468-9).—Blooms June 19—August 29; 
67 visitors observed, July 1-August 21; Mas, Y. 
Long-tongued Bees (27)—Bomb.: Bombias scutellaris 9; 
Megachil.: Osmiini: Aleidamea simplex 92; Megachilini: Megachile 
brevis ¢, fq, mendica 9, 6-dentata ¢ 9, se, fq, Sayapis pugnata 9, 
sayi ¢ 9, ab, Xanthosarus ¢ 2; Coelioxyini: Coelioxys alternata 
ob 2, modesta 4, 8-dentata ¢ 2; Epeol.: Epeolus bifasciatus ¢, fq, 
Triepeolus concavus ¢ 2, ab, concolor ¢ 9, ab, cressonii ¢ 9, fq, 
lunatus ¢ 9, fq, remigatus ¢ 9, ab; Zucer.: Epimelissodes illinoen- 
sis J 9, se, type, obliqua ¢ 9, sc, ab, Melissodes agilis ¢ 2, fq, 
bimaculata ¢ 2, ab, boltoniae 9, comptoides ¢ 9, nivea 4, simillima 
d, ab, trinodis ¢ 9, se, vernoniana ¢ 9. 
Short-tongued Bees (11)—Halict.: Agapostemon radiatus <j, 
texanus 9, se, Augochlora fervida ¢, Chloralictus albipennis 9, se, 
