CHARLES ROBERTSON 187 
Diptera (8: 27)—Bibion.: Dilophus obesulus 2; Muse.: Lucilia 
caesar 1, sericata 1, Pollenia 2, Pseudopyrellia 2; Anthomy.: Limno- 
phora 1, Phorbia acra 17, platura 1. 
Lepidoptera (2:4)—Papilion.: Jasoniades 1; Hesperi.: Epar- 
gyreus 3. 
Ribes gracile (5:270-1).—Blooms March 30—May 16; 38 vis- 
itors observed, April 4-29; Ma, W. 
Long-tongued Bees (18)—Ap.: Apis sc, ab, n; Bomb. (Q): 
Bombias auricomus ab, separatus, Bombus americanorum ab, con- 
similis, impatiens ab, ridingsii; Megachil. (¢, n): Ceratosmia, 
Osmia pumila; Nomad. (n) ; Gnathias cuneatus 4, ovatus ¢, Nomada 
denticulata ¢, illinoensis g', sayi ¢ 9, Xanthidium luteoloides ¢, 
luteolum ¢ 9, fq; Hucer.: Tetralonia dilecta ¢, ab; Anthophor.: 
Anthophora ¢. 
Short-tongued Bees (17, n)—Halict. (2): Agapostemon radia- 
tus, Augochlora viridula, Chloralictus caeruleus, cressonii, sparsus 
se, zephyrus, Curtisapis coriacea, Evylaeus foxii sf, ab, Halictus 
lerouxii sf, Oxystoglossa confusa; Collet.: Colletes aestivalis ¢ 9; 
Andren.: Andrena carlini 9, dunningii ¢, pruni ¢ 2, fq, in cop, 
sayi ¢ 9, ab, Trachandrena claytoniae 4, rugosa ¢. 
Diptera (1)—Bombyli.: Bombylius major n. 
Lepidoptera (2)—Lycaen.: Cyaniris n; Papilion.: Iphielides. 
SCROPHULARIACEAE 
Castilleja coccinea (13:598).—Blooms April 27-June 10; 1 
visitor observed, May 5, 19; Ma (O), R. 
Birds (1)—Trochil.: Trochilus. 
Collinsia verna (13:588-90).—Blooms April 21-June 1; 26 
visitors observed, April 21—May 8; Ma, R. 
Long-tongued Bees (18)—Ap.: Apis se, ab; Bomb. (2): Bom- 
bias auricomus, scutellaris, separatus, Bombus americanorum, im- 
patiens, ridingsii; Ceratin.: Ceratina ¢ 9, fq, Zaodontomerus dj; 
Megachil. (¢ 9, se): Ceratosmia ab, Diceratosmia ab, Osmia atri- 
ventris ab, collinsiae fq, type, pumila ab; Nomad.: Nomada sayi 9; 
Eucer.: Tetralonia belfragei ¢ 9, fq, dilecta ¢; Anthophor.: Antho- 
phora ¢ 9. 
Short-tongued Bees (1)—Halict.: Halictus lerouxii 9, e. 
Diptera (3)—Empid.: Empis nuda, otiosa; Bombyli.: Bomby- 
lius major. 
Lepidoptera (4, n)—Papilion.: Eurymus; Hespert.: Thanaos 
brizo, icelus, persius. 
