118 INSECUTOR INSCITIJ5 MKNSTRUUS 



tions of narrow pale rings at the joints. The wing scales are 

 rather broadly ligulate, especially on the forks of the second 

 vein. 



Hypopygium. Side piece with a subapical lobe, bearing 

 three rods, of which the middle one is stouter, a leaf and a 

 seta. Mesosome thick, cylindrical, the end truncate, slightly 

 excavate, with a row. of numerous small even teeth; the upper 

 angle is rounded and covered with short papillose teeth, the 

 lower angle rounded and short ; a stout tooth arising from the 

 base of the mesosome in the middle, and exceeding it. Tenth 

 sternites tufted with even spines, with a stout curved basal 

 arm. 



The species falls in the table (Ins. Ins. Mens., vi, 94, 1918) 

 with stenolepis, from which it differs in the shape and spinula- 

 tion of the mesosome (PI. II, fig. 9). In stenolepis, also, the 

 tarsal joints are broadly ringed with white. 



Types, two males, No. 24716, U. S. Nat. Mus. ; Colon, 

 Panama, June 24, 1921, taken on the hospital screens between 

 7 and 8 a. m. (W. S. Chidester, communicated by J. Zetek). 



Uranotaenia orthodoxa, new species. 



Head purplish black, with a round silvery blue spot at the 

 vertex; clypeus and tori ochraceous. Prothoracic lobes with 

 bluish silvery scales ; mesonotum pale brown, with small black 

 hairs and longer bristles, leaving two narrow bare lines, and 

 a broader space on each side posteriorly ; an oblique line of 

 silvery blue scales from the root of the wing forward to the 

 middle of mesonotum. Abdomen black above, dull yellowish 

 below. Legs black scaled, with bluish and bronzy reflections, 

 the femora pale beneath. Wing scales black, a line of bluish 

 silvery ones on the base of the fifth vein. 



Type, female. No. 24706, U. S. Nat. Mus.; Tiribi, Costa 

 Rica, May 29, 1921 (A. Alfaro) ; paratype, female, San Jose, 

 Costa Rica, May 15, 1920 (A. Alfaro). 



Nearest to U. pallidoventer Theobald, but the head entirely 

 dark blue behind, without the border of metallic scales. 



Single examples occurred in two rearings, all the other 

 specimens being Culcx coronator in both cases. 



