CHARLES ROBERTSON 21 
Short-tongued Bees (11)—Halict.: Agapostemon radiatus ¢ 9, 
viridulus 2, Chloralictus pilosus 9, ¢, sparsus 9, se, versatus 2, se, ab, 
Halictus lerouxii ¢ 2, ab, Odontalictus ¢ 2, Oxystoglossa confusa 
9, se, ab, similis 9, Seladonia ¢ 9; Panurg.: Calliopsis andreniformis 
3 &, ab. 
“Other Hymenoptera (3)—Sphec.: Sphex nigricans; Bembic: 
Bembix spinolae; Scoli.: Campsomeris. 
Diptera (12)—Syrph.: Allograpta f, n, Eristalis tenax sf, Helo- 
philus laetus f, n, Mesogramma marginata f, n, Sphaerophoria f, n, 
Syritta, Tropidia quadrata; Bombyli.: Anthrax parvicornis, Bom- 
bylius azaleae, atriceps fq; Conop.: Physocephala tibialis, Zodion 
fulvifrons. 
Lepidoptera (8)—Nymphal.: Charidryas; Lycaen.: Cyaniris; 
Papilion.: Pieris; Hesperi.: Epargyreus, Euphyes metacomet, 
Pholisora catullus, Thanaos martialis, Thorybes bathyllus. 
Ruellia ciliosa—Blooms May 26-September 20; 10 visitors ob- 
served, May 29—August 2; Ma, R. 
Long-tongued Bees (6)—Bomb.: Bombus americanorum 2 9, 
impatiens 9; Megachil.: Megachile brevis 9, ¢, also cutting petals, 
Xanthosarus 9, sc; Eucer.: Tetralonia dilecta g 2; Anthophor.: 
Amegilla 2. 
Short-tongued Bees (1)—Halict.: Agapostemon viridulus 9, ¢, n. 
Other Hymenoptera (1)—2Zumen.: Leionotus dorsalis, perfor- 
ating. 
Diptera (2, f, n)—Syrph.: Allograpta; Bombyli.: Anthrax 
sinuosa. 
Ruellia strepens—Blooms May 22—September 13; 1 visitor ob- 
served, June 16; Ma, R. 
Long-tongued Bees (1)—Eucer.: Tetralonia dilecta 9. 
ACERACEAE (anemophilous) 
Acer negundo.—One visitor observed, April 18, 24. 
Long-tongued Bees (1)—Ap.: Apis ¢, ab. 
Acer saccharinum.—One visitor observed, April 10. 
Long-tongued Bees (1)—Ap.: Apis ¢, ab. 
Acer saccharum.—April 4 and 13 the following 22 species were 
taken at exuding sap, 5 never taken on flowers. 
Long-tongued Bees (1)—Ap.: Apis ab. 
Short-tongued Bees (1)—Andren.: Trachandrena rugosa ¢, 3. 
Other Hymenoptera (2)—Bracon.: Earinus 7; Tenthredin.: 
Dolerus sericeus 2. 
