270 NEW YORK STATE MUSEUM 



Anopheles cruicians Wied. 



We have not met with this species. Dr Dyar records it as the 

 commonest Anopheles in houses about Bellport and Amaganset 

 L. I. It may be recognized by the white bases of the last four 

 segments of the palpi, the white scales on the last vein, and the 

 three black spots on the wings. 



Adults and larvae of this spec-ies were met with by Dr Smith 

 almost daily from Aug. 3 to Sep. 28 in the Cape marsh. He states 

 that the females begin their attack before sundown and are active 

 for a little time after sunrise. 



This insect has been recorded fi-om a number of Southern states, 

 where it appears to be somewhat abundant in certain localities, 

 since Weidemann states that it is very common on the Missis- 

 sippi. 



The larva, according to Dr Smith, does not differ in general 

 appearance from those of A. maculipennis and A. p u n c - 

 t i p e n n i s , and ranges only from oU, to 6 mm in length. The 

 head is bix)ader just behind the eyes, narrowing to a rounded 

 front and is variably marked, the If^rger blotches, as a rule, being 

 central. There is a transverse row of six branched* hairs before 

 the middle of the head and the antennae, borne on distinct 

 sclerites, are set with little spines and are shorter, stouter and 

 much darker than in allied species. The mandibles differ from 

 those of its allies by having four instead of three curved spines 

 on the dorsal surface. The thorax is subquadrate, angles rounded 

 and with six lateral tufts of branching hairs and similar ones on 

 the dorsum. The comb on the eighth segment consists of from 

 six to eight long teeth separated by from one to four short, com- 

 pound teeth. The tracheal gills are less than one half as long 

 as those of allied forms. 



