& CHARLES ROBERTSON 159 
Short-tongued Bees (2, 9, ¢)—Halict.: Chloralictus versatus; 
Macropid.: Macropis, ab. 
RANUNCULACEAE 
Actea alba (10: 229).—Blooms May 3-23; 3 visitors observed, 
May 8, 9; Mi, W. 
Short-tongued Bees (3, 9)—WHalict.: Chloralictus zephyrus 
¢c, Evylaeus pectoralis c, ab, Oxystoglossa confusa f. 
Anemonella thalictroides.—Blooms April 2—May 22; 21 visitors 
observed, April 2-28; Mi, W. 
Long-tongued Bees (5)—Ap.: Apis; Ceratin.: Ceratina ¢ 9, 
in cop; Megachil.: Diceratosmia 9, sc, Osmia pumila 9, ¢; Nomad.: 
Gnathias ovatus 9. 
Short-tongued Bees (11)—Halict. (2): Chloralictus sparsus sf, 
versatus sf, fq, Curtisapis coriacea, Evylaeus pectoralis, Halictus 
lerouxii, Oxystoglossa confusa sf, Seladonia sf, fq; Collet.: Colletes 
inaequalis ¢; Andren.: Andrena carlini 9, Opandrena cressonii 9, 
Trachandrena claytoniae ¢. 
Diptera (4)—Syrph.: Brachypalpus frontosus, Eristalis dimi- 
diatus, Sphaerophoria f; Bombyli.: Bombylius major fq. 
Coleoptera (1)—wNitidul.: Cereus fq. 
Aquilegia canadensis.—Blooms April 30—July 5; 1 visitor 
observed, May 12; Ma (0), R. 
Birds (1)—Trochil.: Trochilus. 
Clematis pitcheri (7: 105).—Blooms June 3—July 31; 4 visitors 
observed, June 22—July 7; Ma, R. 
Long-tongued Bees (3)—Bomb.: Bombias auricomus 9%, se, 
Bombus americanorum Q 9, se, consimilis 9. 
Diptera (1)—Syrph.: Volucella vesiculosa. 
Clematis virginiana (7: 103-—5).—Blooms June 23—August 16; 
60 visitors observed, July 21-30; Pol (Mis), W. 
On staminate flowers :— 
Long-tongued Bees (2)—Ap.: Apis; Bomb.: Bombus impatiens 
%, se. 
Short-tongued Bees (9)—Halict.: Agapostemon radiatus ¢, 
Chloralictus illinoensis ¢, fq, sparsus ¢ 2, sc, ab, versatus ¢ Q, se, 
zephyrus ¢ 9, se, fq, Halictus lerouxii 4; Sphecodini: Sphecodes 
arvensis ¢ 9, fq, clematidis 2, type; Prosopid.: Prosopis ziziae 
J 2. 
Other Hymenoptera (10)—Sphec.: Ammobia ichneumonea, 
Isodontia apicalis, Sceliphron; Scoli.: Seolia bicincta; Eumen.: 
