INSECUTOR INSCITI^ MENSTRUUS 27 



On larval characters they group thus : 



Anal segment with the plate separated ventrally ; upper head hairs 

 3-5, lower, 2-4 aboriginis Dyar 



Anal segment ringed by the plate ; head-hairs single or double, 



pimctor Kirby, hexodontus Dyar, cyclocerculus Dyar, leuconotips 

 Dyar 



The specific localities for CuHseta impatiens Walk, and 

 C. incidens Thorn, have been included under the heading of 

 the Canadian Fauna. In the southern part of the Coast Re- 

 gion there is an intrusion of Culex tarsalis Coq., Culex saxa- 

 tilis Grossb. and Aedes palustris Dyar (Royal Oak, British 

 Columbia, April, 1917, R. C. Treheme, through Dr. C. G. 

 Hewitt), of Aedes cestivalis Dyar (Nanoose Bay, British 

 Columbia, August 1, 1903, J. Fletcher), of Aedes varipalpus in 

 tree holes, and of Aedes curriei Coq. as a salt-marsh breeder, 

 besides Anopheles sp. (Ins. Ins. Mens., v, 102, 1917), but these 

 species are not found farther north in the typically rainy belt. 

 The specimen which I recorded from the Olympics (Ins. Ins. 

 Mens., V, 98, 1917) as increpitus ( ?) seems on reexamination 

 to be certainly palustris; but there remains the large red alo- 

 ponotum Dyar, about which nothing positive can be said until 

 males and larvae are at hand. 



A SECOND CULEX OF THE SUBGENUS 

 TRANSCULICIA DYAR 



(Dipt era, Culicidce) 



By HARRISON G. DYAR 



Culex (Transculicia) petersoni, new species. 



Male. Proboscis with a broad whitish ring beyond the 

 middle. Palpi slightly exceeding the proboscis, with small 

 white rings at the bases of the joints and the middle of the 

 long joint. Femora with whitish tip, the tarsal joints narrowly 

 dull white at bases and apices. Abdomen with basal seg- 

 mental whitish bands, widening at the sides; venter white, 

 with some black scales at the tips of the segments toward the 

 base. Pleura pale, with six brown spots. Antennas plumose, 



