Dec, 1906.] Dyar and Knab : Larvae of Culicid^;. 213 



in coronator. Lateral hairs in twos after the second abdominal seg- 

 ment. Subdorsal hairs very long and in twos on segments 4 to 7. 

 Air tube long, 6x1, the pecten reaching to one-third. 



Collected by the junior author at Santa Luerecia, Rincon Antonio, 

 Tehuantepec and Salina Cruz, Mexico, and labelled "Culex? secutor 

 Theob.'' by Mr. Coquillett. Others were taken at St. Vincent, Bar- 

 badoes and Martinique by Mr. Busck and labelled "Culex salinarius 

 Coq.' ' by the author of that species ; but these specimens of Mr. Busck 

 we refer here more doubtfully, as their condition is so poor that we 

 cannot be certain of them. Mr. Busck's material was all taken out 

 and handled by Mr. Coquillett before our final examination, which 

 extra handling was far from beneficial to the skins. 



Culex regulator, new species. Fig. 35. 



Antennae with the tuft nearly at the outer third, pale at base. 

 Head hairs in threes; body pilose; lateral hairs in twos after the sec- 

 ond abdominal segment; tracheae broad. Air tube 7x1, with long 

 single hairs, the pecten reaching to one-fourth. Anal gills long 

 and pointed. 



Collected by Mr. Busck in an old bucket in a field in San Domingo. 

 The adults were named "Culex salinarius Coq." 



Culex pipiens Linnaeus. Fig. 36. 



Culex pipiens Linnaeus, Syst. Nat., ed. x, 601, 1758. 

 Culex pipiens Blanchard, Les Moustiques, 340, 1905. 



Antennal tuft at the outer third, the member all dark. Head hairs 

 in fours or more ; body glabrous ; lateral hairs in twos after the second 

 abdominal segment; subdorsal hairs in twos; tracheae broad. Air 

 tube about five and a half times as long as wide, the pecten reach- 

 ing nearly one- third. 



We have accepted this form as the common European species in- 

 troduced into America, although in spite of various efforts we have 

 been unable to secure any European larvae for comparison. The 

 species is domestic in habits, the larvae occurring in rain water barrels 

 and other artificial receptacles. The distribution is Northern, but 

 not boreal and is confined to the vicinity of civilization. Our records 

 are: Bellport, N. Y. (Dyar), Ithaca, N. Y. (Johannsen), West Spring- 

 field, Mass. (Knab), Durham, N. H. (Dyar), Chicago, 111. (Kelly), 



