CHARLES ROBERTSON 37 
Long-tongued Bees (4)—-Bomb.: Bombus americanorum ¢ 9, 
ab, impatiens %, se, ab; Megachil.: Megachile brevis 9, ¢, n. 
Short-tongued Bees (1)—Halict.: Chloralictus versatus 9, n. 
Diptera (1)—Syrph.: Rhingia sf, n. 
BERBERIDACEAE 
Caulophyllum thalictroides (9: 154-5).—Blooms April 23- 
May 7; 29 visitors observed, April 23—May 3; Mi, Y. 
Long-tongued Bees (3, 2?)—Bomb.: Bombias separatus, Bombus 
impatiens, ridingsii. 
Short-tongued Bees (8, 9)—Halict.: Augochlora viridula, Chlo- 
ralicus sparsus sec, versatus sc, Curtisapis coriacea, Evylaeus 4-macu- 
latus, Halictus lerouxii, Oxystoglossa confusa, pura. 
Other Hymenoptera (6)—Scelion.: Prosacantha n; Bracon.: 
Bracon trifolii, vernoniae, Dacnusa, Microgaster ab, Opius ruficeps, 
Diptera (9)—Mycetophil.: Dynatosoma thoracicum n, type; 
Syrph.: Chilosia petulea, Melanostoma obscurum, Rhingia; Empid.: 
Rhamphomyia piligeronis; Musc.: Morellia; Anthomy.: Hylemyia 
plumosa, type, Mydaea socialis ; Oscin.: Chlorops assimilis. 
Coleoptera (3)—Anthic.: Corphyra terminalis; Curculion.: Idio- 
stethus subealvus ; Mordell.: Mordellistena biplagiata n. 
Podophyllum peltatum (9: 155-6).—Blooms April 14~-May 21; 
5 species and 8 individuals observed, April 25—-May 14; Ma, W. 
Long-tongued Bees (5)—Ap.: Apis ¢, 1; Bomb. (2): Bombias 
separatus 1, Bombus americanorum 3, impatiens 1; Eucer.: Tetra- 
lonia dilecta 3, 2. 
BIGNONIACEAE 
Tecoma radicans.—Blooms June 8—-September 10; 3 visitors 
observed, July 21, August 6; Ma (O), R. 
Birds (1)—Trochil.: Trochilus ab. 
Long-tongued Bees (1)—Bomb.: Bombus americanorum 9%, ¢, 
ab, n. 
Short-tongued Bees (1)—Halict.: Chloralictus zephyrus 9, ¢, n. 
Extra-floral nectaries—Sixteen visitors observed, July 20, 21. 
Ants (4, $)—Formic.: Formica fusea 13, schaufussi 3, Tapi- 
noma 2; Myrmic.: Cremastogaster ab, day and night. 
Short-tongued Bees (3)—Halict.: Chloralictus sparsus 9, 6, 
versatus 9, 20, zephyrus ¢ Q, 7. 
Diptera (9)—Syrph.: Syritta 1; Sarcophag.: Helicobia helicis 
1, Sarcophaga assidua 1, cimbicis 2; Musc.: Lucilia serieata 1, Musea 
1, Stomoxys 1; Agromyz.: Milichiella 11; Ortal.: Camptoneura fq. 
