Robertson — Flowers and Insects. 473 
Hymenoptera — Apidae: (1) Bombus americanorum F. 8, 8.3; (2) Melis- 
sodes obliqua Say 9, s. and c. p.; (3) M. dentiventris Sm. <j, s., freq.; (4) 
Megachile montivaga Cr. 2, s.; (5) Epeolus remigatus F. Q, 8.3; (6) Calli- 
opsis ice Rob. (MS) $9, s.; Andrenidae: (7) Andrena pulchella Rob. 
?, 8. and c. p.; (8) Halictus pectoralis Sm. Q,8.; (9) H. ligatus Say 9,8. 
and c. p.; Sphecidae: on Ammophila gryphus Sm., s.; Scoliidae: (11) 
Scolia bicincta F., s., 
Diptera — Bombyiae: (12) Anthrax aap Say; (13) Systoechus vul- 
garis Lw.; (14) Sparnopolius fulvus Wd.; (15) Lepidophora aegeriiformis 
Westwood; rete. (16) Coronimyia genicuinta Twns. — a 
CorEopsis ARISTOSA Michx.— Visitors observed on fourteen 
days — August 2 to September 15 :— 
a (1) Apis mellifica L. 8, s., ab.; (2) Bombus 
“agg Cr. g', 8., freg 5 (3) B. scutellaris Cr. 8, s.; (4) B, americanoram 
F. J'8, s. and c. p., ab.; (5) B. virginicus Oliv. J'9 8, 8. and c, p., ab.; 
on Melissodes bimevuiata Lep. M. desponsa Sm. 9, s. and ¢. 
; (8) M. dentiventris Sm. 99, s. and c. en ; (9) M. aurigenia Cr. 9, s. and 
‘ p., freq.; (10) M. perplexa Cr. {'2, s. and ¢. p., ab.; (11) Ceratina 
dupla Say 9, s. one c. ps; (12) Megachle iors Say 32, s. and ¢. p., 
Sal ; (18) M. optiva Cr. 9,8. and c. p.; (14) Heriades carinatum 
-; (15) Epeolus sa F. SP s., freq.; (16) Calliopsis eccancalateds 
Rob, (MS) 9, s. and c. p., ab : (17) C. illinoensis Cr. f'9, 8s. and ¢. p., 
ab. ; soe C. rugosus Rob. (MS) 9, gs. and c. p.; (19) C. compositarum Rob. 
SB, 8.3 (20) C Fig snas Rob. (MS) 9'Q, 8. and c. p.; Andrenidae: (21) 
Andrena aliciae R b. 9, 8. and c. p.; (22) Halictus ee Sm. 3, 8.; 
(23) H. ligatus Say Q, s.; (24) Agapostemon viridula F. j'9, 8. and c. 
(25) A. radiatus Say 9, s. and c. p.; (26) Augochlora labrosa Say @, 
3; (27) Colletes spinosa Rob. 2, s.; (28) C. compacta Cr. JQ; 8., freq. ; 
Denies e: oO eto germanica F.; Humenidae: (80) Oayneias tigris 
Sauss.; Bembecidae: (31) Bembex nubillipennis Cr.; (32) B. fasciata F.; 
(33) Beisbedula. ventralis Say; Sphecidae: (34) Ammophila intercepta Lep. ; 
(35) Pelopoeus cementarias Dru.; Scoliidae: (36) Myzine sexcincta F.; 
(37) Scolia bicincta F., ab.; npg idae: (88) sp.; Ichneumonidae: (39) 
Exetastes suaveolens Wals h—a 
Diptera — Bombylidae: (40) eonameg es fasciata Mcq.; (41) E. fascipen- 
nis ot (42) E. decora Lw.; (43) Anthrax neeres Say; (44) Sparnopolius 
ful ) (46) Toxophora amphitea 
8 Wd., ab.; (45 Gyatiopas macer _ 
Wik. att 8.; Conopidae: (47) Zodion fulvifrons Say, s.; Sy é; ¢ ° 
Chrysogaster nitida Wd.; (49) Syrphus americanus Wd.; (50) Mesograpta 
polita Say; (51) risers Pinktitis Wd., freq.; (52) E. latifrons Lw.; (53) 
E. transversus Wd. . orf. i ; Dexidae: (54 and 55) spp.; (56) Prosena 
SP.; (57) Settee” vardios s Twns. —all s.; Tachinidae: (58 and 59) 
SPP-, s., freq.; (60) Jurinia echicetttien Mcq., freq.; (61) srt 
Tobusta Wd., freq.; (62) Siphoplagia anomala Twns., freq.; (63) Milto- 
Sramma argentifrons Twns . Acroglossa oe dan Will.—all s.; 
Sarcophagidae: (65) Sarcophaga sp., 8.3 Mi : (66) Lucilia caesar L., 
or Be. Compsomyia macellaria F., 8.; ‘ehiiagltat: (68) Chortophila 
