168 INSECUTOR INSCITI^ MENSTRUUS 



Blanchard (Les Moust., 345, 1905) copies this synonymy, 

 omitting the query after incidens and adds the locaHty 

 "France ;" but on page 391, he removes incidens to Theobald- 

 inella {=Culiseta) , its correct position. 



As to impiger and implacabilis, they were described from 

 females, evidently in bad condition and therefore undetermin- 

 able. Felt (Bull. 79, N. Y. State Mus., 316, 1904) identified 

 impiger with specimens from northern New York, of which 

 he had all stages. This was a somewhat bold action, as we 

 have no knowledge whether the mosquito fauna of Hudson's 

 Bay is identical with that of the Adirondacks of New York 

 or not; but we have followed this restriction, and placed the 

 unrecognizable implacabilis with it as a synonym (Howard, 

 Dyar and Knab, Mosq. N. Am. and W. Ind., iv, 755, 1917). 



Concerning sylvcB, F. W. Edwards says (The Entomol., 1912, 

 p. 220) that it is probably nemorosus, a species with normal 

 thoracic set?e. Edwards also remarks upon nigripes, saying: 

 "It is extremely similar [to nemorosus], but the scales of the 

 head and thorax are all very deep brown, except for a few 

 in front of the wing base, which are whitish." Edwards does 

 not mention the conspicuous bristles ; but probably the speci- 

 mens examined were misidentified. They were not types. 



Theobald never accepted the separation of the American 

 forms. His latest statement (Mon. Culic, v, 311, note, 1910) 

 was: "American specimens may differ [from nigripes], but I 

 cannot see a single character to separate them and do not 

 believe they are separate." By American specimens, he pre- 

 sumably meant those before him from Hudson's Bay, Canada, 

 and Virgin's Bay, Alaska. We are not familiar with the 

 Canadian specimens in the British Museum, but neither Walker 

 in describing impiger and implacabilis, nor Kirby in describing 

 punctor, all from the same Hudson's Bay locality, make any 

 mention of the long thoracic hairs, which would certainly 

 have attracted their attention if they had been present. These 

 bristles are not easily abraded. Both Giles and Theobald re- 

 describe the types of punctor and make no mention of the 

 long black bristles. In his description of nigripes, Theobald 

 does specifically mention these, showing that it was a char- 



