44 FLOWERS AND INSECTS—XXVI 
Diptera (9)—Syrph.: Eristalis bastardi, Helophilus latifrons 
fq, similis fq, Melanostoma mellinum, Mesogramma marginata f, 
Sphaerophoria; Bombyli.: Bombylius major; Tachin.: Peleteria; 
Musc.: Lucilia caesar. 
Lepidoptera (2)—Nymphal.: Phyciodes; Papilion.: Eurymus. 
Cerastium vulgatum (int)—Blooms May 6—September 24; 15 
species and 28 individuals observed, May 19, 21, 28, June 5, 11; 
Mi, W. 
Long-tongued Bees (4: 9)—Ap.: Apis 5; Bomb.: Bombus ameri- 
canorum 9, 1; Ceratin.: Ceratina 9, 2; Stelid.: Microstelis 2, 1. 
Short-tongued Bees (4:8, 9)—Halict.: Oxystoglossa similis 5, 
Seladonia 1; Prosopid.: Prosopis pygmaea 1; Andren.: Opandrena 
personata 1. 
Other Hymenoptera (1:1)—KHumen.: Leionotus illinoensis 1. 
Diptera (6:10)—Syrph.: Mesogramma marginata 2, Sphaero- 
phoria 4; Bombyli.: Toxophora 1; Conop.: Zodion fulvifrons 1; 
Tachin.: Cistogaster pallasii 1, Peleteria 1. 
Saponaria officinalis (int)—Blooms June 1—October 7; 2 visi- 
tors observed, August 24; Ma, R. 
Lepidoptera (2)—Papilion.: Euphoeades, Pontia. 
Silene nivea.—Blooms June 10-July 9; 1 visitor observed, June 
6; Mi, W. 
Short-tongued Bees (1)—Halict.: Chloralictus pilosus 9. 
Silene stellata.—Blooms June 18—August 7; 1 visitor observed, 
June 23; Ma, W. 
Long-tongued Bees (1)—-Bomb.: Bombus americanorum 9. 
Stellaria longifolia—Blooms May 7—June 26; 13 species and 31 
individuals observed, May 14, 18, 22, 24; Mi, W. 
Long-tongued Bees (3:3)—Megachil.: Diceratosmia 92, 1; 
Nomad.: Holonomada superba 4, 1; Eucer.: Tetralonia dilecta J, 1. 
Short-tongued Bees (6:17)—Halict. (2): Chloralictus sparsus 
3, versatus se, 1, Oxystoglossa similis 5, Seladonia 5; Prosopid.: 
Prosopis ziziae 4, 2; Andren.: Opandrena personata Q, se, 2. 
Diptera (4: 11)—Mycetophil.: Sciara atrata 2; Syrph.: Heloph- 
ilus laetus 1, Mesogramma marginata 2; Tachin.: Cistogaster 
pallasii 6. 
Stellaria media (int, 6: 267—-8).—Blooms March 16—December 
1; 61 species observed, March 25—May 8 and October 15; Mi, W. 
Long-tongued Bees (6)—Ap.: Apis; Ceratin.: Ceratina ¢; 
Megachil.: Ceratosmia ¢; Nomad.: Gnathias ovatus ¢ 9, Xanthid- 
ium luteoloides 4, luteolum ¢. 
