CHARLES ROBERTSON 219 
Other Hymenoptera (4)—Sphec.: Sphex gracilis in cop, vul- 
garis; Scoli.: Elis 5-cincta, Scolia bicincta. 
Diptera (21)—Syrph.: Baccha clavata, Mesogramma geminata, 
Sphaerophoria, Syritta fq; Zmpid.: Parempis; Bombyli.: Anthrax 
fulvohirta, Exoprosopa fascipennis, Geron rufipes, Systropus, 
Toxophora; Conop.: Oncomyia, Stylogaster neglecta, Zodion 
obliquefasciatum; Tachin.: Archytas analis, Cistogaster occidua, 
Epigrimyia geniculata fq, Phorantha humeralis, Siphona, Spallan- 
zania, Trichophora fq; Musc.: Compsomyia. 
Lepidoptera (6)—Nymphal.: Phyciodes; Lycaen.: Everes fq, 
Uranotes; Papilion.: Eurema, Pieris, Pontia. 
VIOLACEAE 
Hybanthus concolor (16: 156-7).—Blooms April 30-May 30; 
1 visitor observed, May 7; Mi, Y. 
Short-tongued Bees (1)—Halict.: Oxystoglossa confusa 9. 
Viola cucullata (2: 173).—Blooms March 17—May 21; 27 vis- 
itors observed, April 9-May 21; Ma, R. Insects not reversing on 
the flowers are marked n. 
Long-tongued Bees (14)—Ap.: Apis; Bomb. (9, n): Bombias 
auricomus, separatus, Bombus americanorum, impatiens; Ceratin.: 
Ceratina ¢, n; Megachil.: Centrosmia 9, Ceratosmia ¢ 9, Osmia 
collinsiae ¢, pumila ¢ 9, se, ab; Nomad.: Holonomada affabilis 9; 
Eucer.: Tetralonia belfragei ¢ 9, dilecta ¢; Anthophor.: Antho- 
phora 3, n. 
Short-tongued Bees (5)—Halict. (2): Chloralictus ecressonii n, 
type, Evylaeus foxii, Seladonia n; Andren.: Andrena ecarlini 9, 
Iomelissa violae ¢ 9, se, ab, type. 
Diptera (2, n)—Bombyli.: Bombylius major, pulchellus. 
Lepidoptera (6)—Nymphal.: Vanessa huntera; Papilion.: 
Eurymus, Pieris; Hesperi.: Thanaos brizo, juvenalis, martialis. 
Viola pedata (2: 174-5).—Blooms April 13—May 27; 14 visitors 
observed, April 19—May 20; Ma, R. 
Long-tongued Bees (6)—Ap.: Apis; Bomb. (2): Bombias 
separatus, Bombus americanorum ab, impatiens; Eucer.: Tetra- 
lonia dilecta ¢ 9; Anthophor.: Anthophora 9, se, ab. 
Diptera (1)—Syrph.: Eristalis latifrons fsp, n. 
Lepidoptera (7)—Nymphal.: Vanessa cardui; Papilion.: Eury- 
mus, Pieris; Hesperi.: Thanaos brizo ab, icelus, juvenalis; Noctw.: 
Plusia simplex. 
Viola pedatifida.—Blooms April 17-May 20; 1 visitor observed, 
May 15; Ma, R. 
