CHARLES ROBERTSON 109 
Long-tongued Bees (1)—Bomb.: Bombus americanorum ¢ 9 9, 
ab. 
Coleoptera (1)—Melo.: Epicauta pennsylvanica gn, n. 
Gentiana puberula (8: 139-40).—One visitor observed, Septem- 
ber 29; Ma, R. 
Long-tongued Bees (1)—Bomb,: Bombus americanorum ¢ 9. 
Sabatia angularis.—Blooms July 11-September 9; 3 visitors 
observed, August 2, 5; Ma, R. 
Long-tongued Bees (2)—Ceratin.: Ceratina 9, se; Megachil.: 
Megachile brevis 9. 
Short-tongued Bees (1)—Halict.: Oxystoglossa similis 9, ¢, n. 
GERANIACEAE 
Geranium carolinianum (6: 272).—Blooms May 21—July 13; 13 
visitors observed, May 21, June 10; Mi, R. 
Long-tengued Bees (3)—Megachil.: Aleidamea simplex ¢ 9, fa, 
Diceratosmia 2; Eucer.: Tetralonia dilecta 9. 
Short-tongued Bees (7)—Halict. (9, se): Agapostemon radi- 
atus, Chloralictus sparsus, tegularis, Evylaeus pectoralis, fq, Oxy- 
stoglossa confusa fq; Prosopid.: Prosopis ziziae 2; Panurg.: Hetero- 
sarus 9, se. 
Other Hymenoptera (1)—Ewmen.: Leionotus illinoensis. 
Diptera (2)—Syrph.: Mesogramma marginata fq; Tachin.: 
Phorantha purpurascens. 
Geranium maculatum (2: 299-300).—Blooms April 13—June 4; 
44 visitors, April 23—May 24; Ma, R. 
Long-tongued Bees (24)—Ap.: Apis; Bomb. (2): Bombias 
separatus, Bombus americanorum, consimilis, impatiens, ridingsii, 
Psithyrus variabilis ; Ceratin.: Ceratina ¢ 2; Stelid.: Microstelis 9, n; 
Megachil.: Trypetini: Prochelostoma ¢ 9, n; Osmiini: Alcidamea 
simplex ¢, Ceratosmia 9, Monilosmia ¢ 9, Osmia atriventris , 
pumila 9; Coelioxyini: Coelioxys sayi ¢ 9; Nomad.: Centrias 
americanus ¢, Holonomada superba ¢ 9, Nomada denticulata 9, 
Xanthidium luteolum 9; Lucer.: Tetralonia belfragei ¢, dilecta 
ob 2, fq, rosae ¢; Anthophor.: Anthophora 9. 
Short-tongued Bees (11)—Halict. (2): Agapostemon viridulus, 
Augochlora viridula, Chloralictus pilosus n, versatus n, Curtisapis 
coriacea, Halictus lerouxii se, Oxystoglossa similis n; Andren.: 
Andrena geranii ¢ 9, fq, type, illinoensis ¢, n, Ptilandrena g. mac- 
ulati ¢ 9, se, ab, oligolege, type, polemonii ¢ 2, fq, n. 
