1919] Ludlow — New Mosquitos from Panama 169 



broad flat shiny white scales of the pleura, which extend on the 

 coxse. There is a row of brown bristles on the lateral margin of the 

 mesonotum and over the wing joint; scutellum almost yellow, with 

 brown flat scales and a group of bristles on each lobe ; metanotum 

 light brown with a well marked bunch of dark bristles (7-15) on 

 the median line on the caudad portion. 



Abdomen covered with rich brown scales having a bluish-green 

 reflection, and large yellowish white brilliant scales forming basal 

 spots, and connecting with the light scales of the venter. The 

 first segment has small lateral white spots, and the last segment 

 has numerous dark bristles. The venter is light, but the narrow 

 apical dark scales extending from the dorsum give it the appear- 

 ance of being banded. 



Legs: femora and tibiae are light scaled on the ventral aspect 

 almost to the apex, more markedly so on the hind legs, otherwise 

 the legs are all a rich dark brown with rather bright yellowish 

 reflections which is sometimes misleading as to a given joint or 

 part of joint. Unguos simple. 



Wings clear, slightly darkened and heavily clothed with large 

 broad truncate dark brown scales, some of which are slightly 

 asymmetrical, the lateral scales longer and not so broad. The first 

 sub-marginal cell is somewhat longer and narrower than the second 

 posterior, its stem about half the length of the cell, and the stem 

 of the second posterior about three-fourths its length, the 

 bases of the cell nearly on a line; the posterior cross-vein about its 

 length interior to the mid-cross vein. The costal margin is 

 "spinous." 



Length — body about 3.5 mm., proboscis 2.5 mm., wing 2.5. 



Taken July 23, at Camp Gaillard, Canal Zone, Panama. 



Described from five females sent in the regular collections from 

 the Panama Canal Department, and named for Mr. J. B. Shrop- 

 shire, as a partial acknowledgment of his interest and care in 

 collecting for the INIuseum. 



The species is smaller than the others reported for this genus, 

 and is very deceptive in appearance, for with these specimens was 

 another, of practically the same general coloring which has curved 

 scales on the head and thorax, no hairs on the cl;y'peus, has rows of 

 bristles on the mesonotum, and no hairs on the postnotum. 



