178 BOTANICAL GAZETTE. [J u l>- 



Moreover, Median states that he did not see the flowers 

 visited by insects — an observation easy to make on anv flower. 

 The plants grow in large patches and are very attractive to 

 a great variety of insects. The nectar is not deep seated, so 

 that rather short tongues can reach it. On 26 days, between 

 April 8 and May 11, the following visitors were observed: 



Hymenoptera — Apidm; (1) Apis mellifica L. $ , s. and c. 

 p. ; (2) Bombus virginicus Oliv. 9 ; (3) B. vagans Sm. 9 ; 

 (4) B. pennsylvanicus De G. 9 ; (5) Synhalonia honesta 

 Cress. S ; (6) S. speciosa Cress. 9 ; (7) Ceratina dupla Say 

 $ ; (8) Osmia lignaria Say 2 9 ; (9) O. albiventris Cress. 



8 9 ; (10) Nomada bisignata Say 9 ; (n) N. luteola St. 

 Farg. $ 9, all only sucking, except no. 1. AndrenicUe : 

 (12-20) Andrena spp., s. and c. p., ab. ; (21) Agapostemon 

 radiatus Say 9 , s and c. p. ; (22) Augochlora pura Say 9 , 

 s. ; (23) A. lucidula Sm. 9 , s. ; (24) Halictus sp. 9 , s.'and 

 c. p. ; (25) H. coriaceus Sm. 9 , do. ; (26) H. fasciatus Nyl? 



9 , do. ; (27) H. pilosus Sm. 9 , do, ; (28) H. connexus Cress. 

 9 , do. ; (29) Colletes inasqualis Say <? 9 , s. 



Diptera — Str a Homy idee: (30) Sargus viridis Say. Bom- 

 bylidce: (31) Bombylius fratellus Wied., s. Conopi'dce : (32) 

 Myopa vesiculosa Say, s. Emfida : (33-35) Empis spp. s. 

 Syrfhidm; (36) Melanostoma obscurumSay ;• (37) Svrphus 

 arcuatus Fall. ; (38) S. ribesii F. ; (39) S. americanus Wied. ; 

 (40) Allograpta obliqua Say; (41) Mesograpta marginata 

 Say; (42) M. geminata Say ; (43) Sphaerophoria cylindrica 

 Say : (44) Eristalis dimidiatus Wied. ; (45) E. latifrons Lu. ; 

 (46) Helophilus similis Macq. ; (47) Syritta pipiens L.— all 

 sucking and feeding on pollen. Tachinidm: (48) Gonia fron- 



tosa Say, s. Sarcofhagidic : (49) sp., s. ; (50, 51) Sarcoph- 

 aga spp., s. Muscidice; (^2) Lucilia ca-sar L. j (53) L. cor- 

 nicina Mgn. ; (54) L. ruficeps Mgn., all s. Anthomyidas : 

 (55-57) s PP-i s. Cordyliiridce : (58) Scatophaga squalida 

 Mgn., s. Sepidce: (59) Sepsis sp. Drosofjiiluhv: (60) 

 Drosophila sp. 



Lepidoptera— Rhofalocera: (61) Phyciodes tharos Dur. ; 

 (62) Pyrameis atalanta L. ; (63) Lycama comvntas Godt. ; 

 (64) Papilio ajax L. ; (65) Pieris protodice Bdl-Lec. ; (66) 



P. rapae L. ; (67) Colias philodice Godt. ; (68) Nisoniade.^ 



icelus Lintn. ; (69) N. juvenalis F.— all s. 



Coleoptera— C/irysomcI/dcs: (70) Megilla maculata DeG. 

 Cur cult oni dee : (71) Centrinus sp. 



Carlmville. 111. 



