MOSQUITOS OR CULICIDAE OF NEW YORK STATE 357 



with a peculiar cluster of much longer spined ones arising from a 

 pocketlike depression on either side; there is a pair of long, 

 slender, somewhat curved spines on each side near the middle. 

 Median four frontal setae, each bearing a number of small spines 

 and two longer, stouter processes near the distal third; lateral pair 

 long, simple, slender, much curved. Basal segment of antenna short, 

 bearing four long, stout, and one slender, apical processes. Man- 

 dibles stout, black, with about seven teeth, and four well devel- 

 oped barbed processes near the base. Air tube regularly tapering, 

 length about three and one half times its greatest diameter. At the 

 base of the air tube there is an irregular group of many branched, 

 compound hairs comparable in position and general arrangement 

 to the comb scales on the eighth segment of Culex larva. These 

 are detected only on cast skins. Terminal segment slender, not 

 much larger than the air tube. Ventral tuft of hairs thick, ex- 

 tending along the entire barred area ; dorsal tuft small and com- 

 posed of only a few hairs. Fleshy anal processes four, tapering 

 to a rounded point. 



EUCORETHRA Uudw. 



This genus was erected for a large mosquito closely related to 

 Corethra and Sayomyia. 



Eucorethra underwoodi Undw. 



PL 12, 28, 39, 47, flff. 2, 3 ; 2 ; 4 ; 3 respectively 



This interesting and till recently unknown larva was met with 

 in large numbers in a cold mountain pool near Elizabeth- 

 town N. Y. June 9. 



This insect has been carefully described by Mr Johannsen, who 



was the first to carefully study the species. 



Female. Antennae sparsely haired, black ; basal segment glob- 

 ular, yellowish; labrum densely haired, much prolonged, black, 

 tipped with brownish yellow; palpi dark brown, rather densely 

 clothed with blackish hairs. Labium, basal portion dark brown, 

 apical portion golden yellow. Anterior and lateral portions of 

 thorax a rich dark brown, sparsely clothed with a median line 

 of bright, golden yellow scales and with a similar lateral patch 

 extending over the humeri and to the base of the wings; anterior 

 portion of this latter with the short, grayish pile showing only in 

 certain lights, because of the rich brown beneath ; posterior |)or- 

 tion grayish only. Posterior dorsal portion of thorax, scutellum 

 and postscutellum grayish, the scutellum crowned with a row of 

 long, golden brown hairs; sides of the thorax variable, grayish 



