CHARLES ROBERTSON 129 
Petiolar nectaries.—Five visitors observed on July 21, 30. 
Ants (4, %)—Formic.: Camponotus herculaneus 7, Formica 
schaufussi 1, Lasius 2; Myrmic.: Cremastogaster 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. 
Long-tongued Bees (22)—Ap.: Apis se, ab; Bomb.: (9): 
Bombias auricomus ab, separatus sc, Bombus americanorum, con- 
similis, impatiens; Ceratin.: Zaodontomerus ¢; Megachil. (se) : 
Centrosmia ¢ 9, Ceratosmia ¢ 9, ab, Diceratosmia 9, Osmia atri- 
ventris 9, pumila 9, fq; Nomad.: Gnathias cuneatus 4, Holonomada 
affabilis 9, Nomada denticulata 4, sayi 2, Xanthidium luteoloides 
2, luteolum ¢ 9; Eucer.: Tetralonia belfragei 4, dilecta ¢ 9, se, in 
cop, ab; Anthophor.: Anthophora ¢ 9, fq, Emphoropsis ¢. 
Short-tongued Bees (19)—Halict. (2): Agapostemon radiatus, 
Augochlora viridula, Chloralictus pilosus, sparsus se, ab, versatus 
se, fq, zephyrus, Curtisapis coriacea, forbesii, Evylaeus arcuatus, 
Halictus lerouxii sc, fq, Oxystoglossa confusa, pura, Seladonia se, 
ab; Collet.: Colletes inaequalis ¢ 9, se, ab; Andren.: Andrena ear- 
lini 9, se, mandibularis 9, se, sayi 2, se, Opandrena ecressonii 4, 
Trachandrena claytoniae Q, sc. 
Other Hymenoptera (1)—Vesp.: Polistes variatus. 
Diptera (4)—EHmpid.: Empis otiosa fq, Pachymeria, Rham- 
phomyia priapulus; Bombyli.: Bombylius major. 
Lepidoptera (5, n)—Nymphal.: Vanessa atalanta, huntera; 
Lycaen.: Everes; Hesperi.: Thanaos icelus, juvenalis. 
Coleoptera (1)—Cerambyc.: Molorchus n. 
Crotalaria sagittalis—Blooms June 14-October 9; 8 visitors 
observed, June 16—July 9; Ma, Y. 
Long-tongued Bees (6)—Bomb.: Bombus americanorum %; 
Megachil.: Megachilini: Megachile brevis ¢ 9, se, ab, generosa 9, 
Sarogaster 9, se; Coelioxyini: Coelioxys 8-dentata 2, sayi 9. 
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, ¢)—Bomb.: Bombus americanorum 9%; 
Megachil.: Megachile brevis 2; Lucer.: Melissodes bimaculata 9. 
Desmodium canadense (3:83).—Blooms June 13-September 
7; 6 visitors observed, July 11—August 25; Ma, R. 
