78 FLOWERS AND INSECTS—XXVI 
Lepidoptera (3)—Nymphal.: Phyciodes; Hesperi.: Pholisora 
eatullus; Ctenuch.: Scepsis. 
Hemiptera (2)—Caps.: Calocoris, Lygus. 
Helianthus mollis (15:469).—Blooms July 9-September 25; 
27 visitors observed, July 29—August 23; Mas, Y. 
Long-tongued Bees (12)—Bomb.: Bombus americanorum ¢ 9, 
fq; Megachil.: Megachilini: Megachile brevis 3’, petulans 9, 6-den- 
tata 9, Xanthosarus 0 9, se; Coelioxyini: Coelioxys 8-dentata ¢'; 
Epeol.: Triepeolus concavus 9, cressonii 2; Hucer.: Epimelissodes 
obliqua ¢ 9, se, fq, Melissodes agilis 3 9, se, coloradensis J, trinodis 
0) se. 
Short-tongued Bees (7)—Halict.: Agapostemon viridulus 2, 
Chloralictus pilosus 9, se, versatus 2, se, Odontalictus 9, se, faq, 
Oxystoglossa similis 9, sec; Panurg. (¢ 9, sc): Pseudopanurgus 
albitarsis in cop, rugosus. 
Diptera (6)—Syrph.: Eristalis latifrons, Tropidia mamillata; 
Bombyls.: Anthrax halcyon, Exoprosopa decora, Systoechus fq. 
Lepidoptera (2)—Nymphal.: Phyciodes; Papilion: Eurymus. 
Helianthus scaberrimus.—Blooms August 2—September 9; 12 
visitors observed, August 9-September 9; Mas, Y. 
Long-tongued Bees (5)—Bomb.: Bombus. americanorum §; 
Megachil.: Xanthosarus 2; Hucer.: Epimelissodes obliqua ¢ 9, 
Melissodes agilis , sc, coloradensis 9, se. 
Short-tongued Bees (3)—Dufoure.: Halictoides 9, se; Andren.: 
Pterandrena helianthi ¢ 9, se, fq, pulchella 9, se, type. 
Diptera (2)—Syrph.: Eristalis transversus; Bombylt.: Sparno- 
polius. 
Coleoptera (1)—ZLampyr.: Chauliognathus pennsylvanicus. 
Hemiptera (1)—Caps.: Calocoris. 
Helianthus strumosus (15:470).—Blooms July 6—September 
7; 14 visitors observed, August 22, 24; Mas, Y. 
‘ Long-tongued Bees (6)—Bomb.: Bombias separatus ¢'; Ceratin.: 
Ceratina 9; Megachil.: Megachile petulans ¢; Epeol.: Triepeolus 
concavus 9, cressonii ¢'; Hucer.: Epimelissodes obliqua ¢ 9, se, fq. 
Short-tongued Bees (2, 9)—Andren.: Pterandrena pulchella fq; 
Panurg.: Pseudopanurgus labrosiformis. 
Other Hymenoptera (1)—Sphec.: Sphex nigricans. 
Diptera (3)—Bombyli.: Anthrax haleyon, Sparnopolius, Sys- 
toechus. 
Lepidoptera (2)—Nymphal.: Charidryas; Papilion.: Eurymus. 
Helianthus tuberosus (15:471).—Blooms July 15—-September 
28; 53 visitors observed, August 13-September 28; Mas, Y. . 
