176 Trans. Acad. Sci. of St. Louis. 



Indrica Say; (74) Eristalis dimidiatus Wd.; (75) E. tenax L., freq.; (76) E. 

 latifrons Lw.; (77) E. aeneusF.; (78) Helophilus similis Mcq. ; (79) H. lati- 

 fronsLw.; (80) Tropidia mamillata Lw. ; (81) Syritta pipiens L.; (82) Spi- 

 lomyia longicornis Lw., freq. ; (83) S. quadrifasciata Say; Tachinidae: (84) 

 Gymnopareia americana Twns.; (85) Besseria atra Coq. (MS.) ; (86) Jurinla 

 aplcif era Wlk. ; (87) Belvosia bif asciata F. ; (88) Peleteria robusta Wd. ; (89) 

 Siphoplagia anomala Twns. ; (90) Micropalpus f ulgens Mg. ; (91) Acroglossa 

 hesperidarum Will., freq.; (92) Siphona illinoensis Twns.; Dexidae: (93) 

 Ptilodexia abdominalls Desv. ; Sarcophagidae: (94) Sarcophaga sp.; (95) 

 Helicobia sp.; (96) H. helicis Twns.; Muscidae: (97) Lucilia sp. ; (98) L. 

 cornicinaF.; (99) Compsomyia macellaria F.; (100) Musca domestica L. — 

 all 8. orf. p. 



Lepidoptera — Bhopalocera: (101) Phyciodes tharos Dm.; (102) Pyraraels 

 huntera F.; (103) Thecla mellnus Hbn. ; (104) Pierls protodice Bd.-Lec. ; 

 (105) Meganostoma caesonia Stoll; (106) Colias philodice Gdt. ; (107) Pyr- 

 gus tessellata Scud.; Heterocera: (108) Scepsis fulvicollis Hbn.; (109) Feltia 

 subgothica Steph. ; (110) Heliothis armiger Hbn.; (Ill) Drasteria erichto 

 Gn. — all s. 



Coleoptera — Lampyridae: (112) Chauliognathus pennsylvanicus De G.; 

 Cerambycidae: (113) Cyllene robiniae Forst. ; Chrysomelidae: (114) Diabro- 

 tica longicornis Say; Meloidae: (115) Epicauta pennsylvanica De G. — all 

 f. p. 



Hemiptera — Capsidae: (116) Lygus pratensis L., s. 



SiLPHiuM PERFOLiATUM L. — The cup-plant is common in low 

 grounds along streams. The stems grow two or three metres 

 high and bear yellow heads which expand six to seven, or 

 more, centimetres. The disc florets yield nectar and pollen, 

 the ray florets being pistillate. The tubes of the disc florets 

 are rather large and measure about 5 mm. in length. This 

 secures the visits of the longer-tongued insects. The bloom- 

 ing season is from July 9th to Sept. 12th. The following 

 visitors were noted on July 23, 31, Aug. 3, 4, 9, 13, 15-17, 

 and Sept. 12: — 



Hymenoptera— ^i)i(^ae.' (1) Apis melliflca L. g, s. & c. p., freq.; (2) 

 Bombus americanorum F. ,^§,8. &c. p.; (3) Melissodes bimaculata Lep. 

 (^, s.; (4) M. obliqua Say J* ? , s. & c. p. ; (5) M. agilis Cr. (^, s., freq. ; (6) 

 M. perplexa Cr. J*?, s.,freq.; (7) M. dentiventris Sm. J*, s., freq.; (8) M. 

 confusaCr. J*, s.; (9) M. coloradensis Cr. c3^9,s.&c.p.; (10) Ceratina dupla 

 Say ?, s.; (11) Megachile petulans Cr. (^, s.; (12) M. mendica Cr. $, s. ; 

 (13) M. brevis Say ?, s. &c. p.; (14) Epeolus concavus Cr. (^^, s.; (15) 

 E. lunatus Say J*?, 8.; (16) Calliopsis labrosus Eob. J*, s., freq.; (17) C. 

 rugosus Rob. J^?, s.; Andrenidae: (18) Halictus lerouxii Lep. $, s.; (19) 

 H. ligatus Say ?, c. p.; (20) H. pilosus Sm. 9, c. p., freq.; (21) H. con- 

 fusus Sm. 9, c. p.; (22) H. stultus Cr. 9, c. p., freq.; (23) Agapostemon 

 viridulaF. ?, s. &c. p. ; (24) A.radiatus Say 9, s. & c. p.; (25) Augochlora 



