RoheHson — Flowers and Insects. 177 



pura Say $,8.; (26) Andrena pulchella Rob. J*, s., freq. ; (27) A. aliclae 

 Eob. 9,8.; Scoliidae: (28) Scolia bicincta F., s. 



Diptera — Bombylidae: (29) Exopro8opa fasciata Mcq., 8. ; (30) Anthrax 

 halcyon Say, s. ; (31) A. alternata Say, f . p. ; (32) Systoechus vulgaris Lw., s., 

 freq. ; (33) Sparnopolius fulvus Wd., 8.; Conopidae: (34) Zodion leucos- 

 toma Will., 8. ; Syrphidae: (35) Allograpta obliqua Say, f. p. ; (36) Erlstalis 

 transversus Wd., f. p.; Tachmidae: (37) Jurinia smaragdina Mcq., a. 



Lepidoptera — Shopalocera: (38) Danals archippus F. ; (39) Papilio 

 philenor L. ; (40) Pamphila cernes Bd.-Lec; (41) P. otho S. & A. var. 

 egeremet Scud. — all s. 



Heliopsis LAEVI8 Pers. — IT. helianthoides (L.) B. S. P. — 

 The plants are common, grow one metre, or more, high, and 

 bear numerous orange-yellow heads, which expand about 5 

 era. The ray florets are pistillate. The disc florets are per- 

 fect, yield nectar and pollen, and have tubes 3 to 4 mm. long. 

 The blooming time is from July 1 to Sept. 28. The following 

 visitors were taken July 16, 31, Aug. 1, 3, 6, 7, 12, 13, 15, 

 17, 21, 22; Sept. 10, 12*: — 



Hymenoptera — ^pidoe ; (1) Melissodes perplexa Cr. cf, 8,; (2) M. col- 

 oradensis Cr. J^, s.; (3) M. obliqua Say ^f, s.; (4) M. dentiventris Sm. 

 (;^$, 8.; (5) Ceraiina dupla Say 9,8.; (6) Megachile brevis. Say J>, s., 

 freq.; (7) Coelioxys altili8 Cr. cf9, s.; (8) Epeolu8 lunatu8 Say ^^9, 8., 

 freq.; (9) E. fumipennis Say (^, s.; (10) E. concavus Cr., s.; (11) E. cre8- 

 sonii Hob. J^, 8.; (12) Phileremus heliopsis Rob. ,j^, 8.; (13) Calliopsis 

 labrosus Rob. ,^9, 8. & c. p. ; (14) C. rngosus Rob. J*, s., freq. ; Andre- 

 nidae: (15) Halictus pectoralis Sm. 9, c. p.; (16) H. ligatus Say, 9,s. ; 

 (17) H. pruinosus, Rob. 9,8. «&c. p.; (18) H. obscurus Rob. J*, 8.; (19) 

 H. pilosus Sm. 9, s. & c. p. ; (20) Augochlora labrosa Say 9,8. &c. p.; (21) . 

 A. pura Say, 9,8.; (22) Andrena aliciae Rob. 9, s.; Philanthidae : (23) 

 Cerceris sp.; Sphecidae: (24) Ammophila vulgaris Cr. 8. ; Scoliidae: (25) 

 Scolia bicincta F., s. 



Diptera — ^mj)idae; (26) Empis clausa Rob. (MS.), freq.; Bombylidae: 

 (27) Exoprosopa fasciata Mcq. ; (28) E. fascipennis Say. ; (29) Anthrax 

 halcyon Say; (30) Systoechus vulgaris Lw. ; (31) Sparnopolius fulvus Wd.; 

 (32) Geron calvus Lw., freq.; (33) G. ruflpes Mcq.; Syrphidae: (34) 

 Erlstalis transversus Wd. — all s. 



Lepidoptera — Rhopalocera: (35) Phyciod es tharos Dru,; (36) Thecla- 

 melinus Hbn.; (37) Pieris protodice Bd.-Lec; (38) Pholisora catullus 

 F.— alls. 



Coleoptera — Lampyridae: (39) Chauliognathus pennsylvanicus De G., s. 



Hemiptera — Lygaeidae: (40) Lygaeus turcicusF., s. 



RuDBECKiA LACiNiATA L. — The stcms grow two or three 

 metres high, are considerably branched and bear numerous 

 heads with yellow discs and rays. The heads expand 8-9 



