DIPTERA 395 



Culex consobrinus Desvoidy. 



Culcx consobrinus Desvoidy, Memoirs Soc. Hist. Nat. Paris, p. 408, 1827. 

 Sitka, June 16; Yakutat, Alaskj^ June 21 : Three female speci- 

 mens. Originally described from Pennsylvania ; at the east it does 

 not appear to occur south of the State mentioned, but ranges north- 

 ward into British America. West of the Mississippi, however, it 

 ranges southward to Nebraska, New Mexico, and southern California^ 



Family CHIRONOMID^. 

 Telmatogeton alaskensis sp. nov. 



Head and its members brownish black, the front velvet black, first 

 joint of antenna; velvet brown ; antennas about as long as the head, the 

 first joint nearly three times as wide as the others, the latter subcylin- 

 drical, the last joint slightly wider than the others and subconical 

 in profile ; thorax opaque, black, the lateral margins and upper part 

 of pleura varied with yellowish; scutellum, metonotum, and abdomen 

 brownish black, the lateral margins of the latter and hind margins of 

 the ventral segments, yellow ; coxse mottled black, brown and yel- 

 lowish, remainder of legs blackish brown, front femora each bearing 

 a transverse, contiguous pair of blunt tubercles near the tip of the 

 under side, and just beyond them a pair of rather widely separated' 

 cavities; front tibiae each bearing a blunt tubercle on the under side 

 near the base, the inner side of each front tibia rather strongly dilated 

 at its first third ; first joint of the tarsi nearly three times as long as 

 the second, each of the last three joints slightly over one-half as long 

 as the second joint, claws cleft almost to the middle ; halteres whitish ; 

 wings brownish gray, veins brown, first section of the fourth vein yel- 

 low, third vein on its basal portion almost touching the first; length 

 4.5 mm. Four male specimens, collecfed June 21. 



Habitat. — Yakutat, Alaska. 



Type. — Cat. no. 5194, U. S. National Museum. 



The present genus, which is new to our fauna, was founded on a 

 species inhabiting St. Paul Island, in the southern part of the Indian 

 Ocean. Our species agrees very well with Dr. Schiner's description 

 and figures except in the structure of the legs, but these are not suffi- 

 ciently different to warrant the establishing of a separate genus for the 

 present form. 



Chasmatonotus univittatus sp. nov. 



Black, the bases of antennae, front corners and hind end of thorax, 

 pleura, except the lower portion and one or two spots ; halteres, trochan- 



