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) Syrltta pipiens L.; (82) Spi- 

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

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

 aplcifera "Wlk. ; (87) BelvosiabifasciataF. ; (88) Peleteria robusta "Wd. ; (89) 

 Siphoplagia anoraala Twns.; (90) Micropalpus fulgens Mg. ; (91) Acroglossa 

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

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

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

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

 all s. or f . p. 



Lepidoptera — Bhopalocera: (101) Phyciodes tharos Dru.; (102) Pyrameis 

 huntera F. ; (103) Thecla melinus Hbn.; (104) Pieris protodice Bd.-Lec. ; 

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

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

 subgothica Steph. ; (HO) Heliothis armiger Hbn.; (HI) 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 PERFOLiATDM L. — The cup-pknt is common in low 

 grounds along streams. Tiie 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 — Apidae: (1) Apis mellifica L. §, s. & c. p., freq.; (2) 

 Bombus americanprum F. (^^, s. & c. p.; (3) Melissodes bimaculata Lep. 

 cf , 8. ; (4) M. obliqua Say ,^ 9 > s. & c. p. ; (5) M. agilis Cr. (J', s., freq. ; (6) 

 M. perplexa Cr. (J' 9, s.,freq. ; (7) M. dentiveutris Sm. ^f, s., freq.; (8) M. 

 confusa Cr. (^', s.; (9) M. coloradensis Cr. (f' 9i s. &c.p.; (10) Ceratina dupla 

 Say 9j s.; (11) Megachile petulans Cr. (J^, s.; (12) M. mendica Cr. 9,s. ; 

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

 E. lunatus Say cf?, s.; (16) Calliopsis labrosus Rob. (^, s., freq.; (17) C. 

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

 H. ligatus Say 9i 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. 9» s. &c, p.; (24) A. radiatus Say 9> s- <Si c. p.; (25) Augochlora 



