CHARLES ROBERTSON 173 
Other Hymenoptera (2, 3)—Formic.: Formica fusca; Myrmic.: 
Cremastogaster. 
Diptera (2)—Syrph.: Criorhina umbratilis; Sarcophag.: 
Cynomyia. 
Pyrus coronaria (15: 442-3).—Blooms April 10—May 23; 9 vis- 
itors observed, May 2-12; Ma, R. 
Long-tongued Bees (7)—Ap.: Apis fq; Bomb. (2): Bombias 
auricomus, separatus fq, Bombus americanorum ab, impatiens ab; 
Megachil.: Ceratosmia 9; Eucer.: Tetralonia dilecta 3, fq. 
Lepidoptera (2)—Nymphal.: Anosia; Hesperi.: Thanaos Juve- 
nalis. 
Rosa humilis (15 : 441-2) —Blooms May 15—July 29 ; 27 visitors 
observed, May 22—June 20; Ma, R. 
Long-tongued Bees (8, ¢)—Bomb.: Bombias separatus 2 9, 
Bombus americanorum Q, ab, impatiens 9; Ceratin.: Ceratina 9; 
Megachil.: Megachile brevis 9; Hucer.: Tetralonia dilecta 9, ab; 
Anthophor.: Anthemoessa ?, ab, Clisodon 9. 
Short-tongued Bees (6, 9, ¢)—Halict.: Agapostemon radiatus, 
viridulus, Augochlora fervida, Chloralictus versatus, Oxystoglossa 
confusa; Andren.: Opandrena cressonii. 
Diptera (11, f)—Syrph.: Allograpta n, Mallota cimbiciformis, 
posticata, Mesogramma geminata n, Baccha fuscipennis n, Rhingia 
n, Syrphus americanus n, Volucella vesiculosa fq, n, Xylota chaly- 
bea n, fraudulosa n; Bombylt.: Anthrax sinuosa. 
Coleoptera (2, £)—Chrysomel.: Diabrotica 12-punctata n; 
Scarabae.: Trichius piger ab. 
Rosa setigera (15: 442) —Blooms June 9—July 21; 35 visitors 
observed, June 14-July 7; Ma, R. 
Long-tongued Bees (12, c)—Ap.: Apis fq; Bomb.: Bombias 
auricomus 2 %, separatus 2 9, ab, Bombus americanorum ¢ 9, fq, 
impatiens $9; Megachil. (2): Osmia pumila, Megachile addenda, 
mendica fq, Xanthosarus; Eucer.: Tetralonia dilecta 9, fq, rosae 
?, type, Anthophor.: Anthemoessa Q, ab. 
Short-tongued Bees (6, 2, c)—Halict.: Agapostemon radiatus, 
viridulus fq, Augochlora viridula, Chloralictus versatus, Curtisapis 
eoriacea fq, Evylaeus arcuatus. 
Diptera (16, f)—Syrph.: Allograpta n, Eristalis transversus, 
Mallota cimbiciformis fq, posticata, Milesia fq, Myiolepta nigra n, 
Pipiza pistica n, pulchella n, Syritta n, Syrphus americanus fq, n, 
Temnostoma n, Xylota angustiventris n, chalybea n; Bombyli.: 
Anthrax sinuosa, Argyramoeba albofasciata, oedipus. 
Coleoptera (1, £)—Scarabae.: Trichius piger. 
