158 FLOWERS AND INSECTS—XXVI * 
May 5, 6, 9, 10, 1916, the first 100 individuals, representing 27 
species, taken on the flowers are as follows: 
Long-tongued Bees (4: 10)—Ap.: Apis 4; Bomb.: Bombus con- 
similis 1; Megachil.: Osmia pumila 2; Nomad.: Gnathias ovatus 3. 
Short-tongued Bees (15: 81)—Halict.: Chloralictus pilosus 5, 
sparsus 3, versatus 5, zephyrus 2, Evylaeus foxii 1, truncatus 1, 
Odontalictus 5; Andren.: Andrena arabis 1, nasonii 3, Opandrena 
eressonii 2, miserabilis 3, personata 5, Ptilandrena erigeniae 39; 
Trachandrena claytoniae 2, forbesii 4. 
Diptera (8: 9)—Syrph.: Mesogramma geminata 1; Conop.: 
Myopa vesiculosa 1; Sarcophag.: Helicobia helicis 1, Sarcophaga 
sinuata 1; Musc.: Lucilia sylvarum 2; Anthomy.: Limnophora 1, 
Phorbia acra 1, platura 1. 
Portulaca oleracea (int).—Blooms June 12—October 3; 3 vis- 
itors observed, August 11; Mi, Y. 
Short-tongued Bees (1)—Panurg.: Calliopsis andreniformis 9. 
Diptera (1)—Syrph.: Syritta. 
Coleoptera (1)—Malach.: Collops. 
PRIMULACEAE 
Dodecatheon meadia (8: 104-6).—Blooms April 23—May 30; 9 
species and 38 individuals observed, May 2-23; Ma, W. 
Long-tongued Bees (6: 35)—Bomb. (2): Bombias auricomus 
4, separatus 4, Bombus americanorum 21, impatiens 2; Hucer.: 
Tetralonia dilecta %, 3; Anthophor.: Anthophora 9, se, 1. 
Short-tongued Bees (2:2, 9, ¢, n)—Halict.: Augochlora viri- 
dula 1, Oxystoglossa confusa 1. 
Lepidoptera (1)—Papilion.: Eurymus 1. 
Samolus floribundus.—Blooms June 15-—October 8; 1 visitor 
observed, September 9; Mi, W. 
Diptera (1)—EHmpid.: Parempis 1. 
Steironema ciliatum (8:106—-8).—Blooms June 11—August 6; 
2 visitors observed, July 1, 16, 18; Mi, Y. 
Short-tongued Bees (2: 8)—Halict.: Chloralictus versatus Q, cf, 
1; Macropid.: Macropis ¢ 9, ef, 7. 
Steironema lanceolatum (6: 47).—Blooms June 10—July 15; 1 
visitor observed, June 12—July 1; Mi, Y. 
Short-tongued Bees (1)—Macropid.: Macropis steironematis J 
Q, ef, ab, type. 
Steironema quadriflorum (6: 48).—Blooms June 4-August 23; 
2 visitors observed, July 6, 10; Mi, Y. 
