THE CANADIAN ENTOMOLOGIST. 149 



Cambridge and New York are 6'. pachyproda Loew, var. major ; 

 the other ones from New York and Hayti are S. pacJiyprocta Loew, 

 var. 7iiinor. The labels in Loew's handwriting are on the pins, and 

 two corresponding specimens with the same numbers and labels in 

 Loew's collection ; there are specimens from Cuba and Pennsyl- 

 vania in L. coll.] 

 Spec. 1 8. Not like any British species. 



[i spec. M.; Manlius, N. Y., Aug. iS, Comstock.] 

 A. Anus black or gray. (Second division) 



B. Second longitudinal veins of wings spineless. 

 C. Posterior tibiae of male bearded. 



E. Thorax with four dorsal bristles behind suture. 

 D. Second abdominal segment without central 

 spines. 

 Spec. 19. Closely resembles S. similis Mihi. 



[3 spec. M. male and female, Lake Superior, Agassiz; South Park, 

 Color., Lieut. Carpenter. See about this species O. S. Catalogue, 

 p. 257 : "I am doubtful whether any of the N. Am. species is 

 absolutely identical with S. camaria, unless it be with ^. sij/iilis, 

 etc." Mr. Meade. 



E. Thorax with three bristles behind suture. 

 Spec. 20. Very similar to female of 6'. albiceps or S. apropos. 

 [i spec. M., Detroit, Mich., June 3, Hubbard.] 

 0. Posterior tibiae of male smooth. 



D. Second abdominal segment with two central spines. 

 Spec. 21. Corresponds closely with S. juvcnis Rond. ' 



[2 spec, male and female, M.; Manhus, N. Y., Aug. 12, Comstock; 

 Detroit, Mich., July, Hubbard.] 

 Spec. 22. Corresponds closely with .S". nigriventris Meig. 



[i spec. M., Sturgeon Isl.; Brit. Amer.; N. Red River; Scudder.] 

 Spec. 23. Not like any British species. 

 [i spec, Cambridge, Mass.] 



Genus Phrissopoda (Peskia Desv., Meade.) 

 Spec. 24. iinperialis ? Desv. 



[i spec. M., Cuba; some spec, in L. coll.] 

 Gen. Cynomyia Desv. 

 Spec. 25. Spec uncertain. 



[i spec. M., Fabyan House, N. Hampsh. O.S.] 



