EXPEEIMENT STATION EEPOET. 689 



It is a small insect with three buff-colored stripes on the thorax, the 

 median abbreviated posteriorly, the lateral abbreviated anteriorly. 

 The wings are marked with about a dozen brown spots. The legs are 

 whitish; the femora and tibias spotted with brown and the tarsi 

 ringed with brown at the apex of the joints. The abdomen is yellow- 

 ish-brown. 



Description of the Adult. 



Female (Figure 6). — Measures 3.5 mm. ,=.14 of an inch in length. 

 The head is yellowish, the eyes black and widely separated; the 

 proboscis and palpi brown, the latter five- jointed and clothed with 

 long, concolorous hair; the antennae are yellowish, annulated with 

 brown, and cream-colored hairs are at the base of the joints. The 

 dorsum of the thorax is whitish with three longitudinal stripes, the 

 median divided longitudinally by a narrow line which begins near the 

 anterior margin and extends posteriorly for two-thirds the length of 

 the thorax. The lateral stripes begin near the posterior margin and 

 extend anteriorly to about the middle. The legs are creamy white, the 

 femora and tibiie each marked with about a dozen brown spots; the 

 tarsi ringed with brown at the apex of the joints. The claws are 

 simple on all feet. The wing veins are clothed with long, creamy 

 scales, with brown ones collected in small spots as follows: at the 

 cross-veins; at the point where the sub-costa joins the costa; on the 

 radius midway between the point of origin and the junction with 

 radius 2, where they touch the wing margin, and at the fork with radius 

 3 and 3 ; at the fork of media 1 and 2 and media 3 ; at the fork of 

 cubitus 1 and cubitus 2, and also where they join the wing margin; on 

 the first anal vein where it joins the wing margin. The abdomen is 

 yellowish-brown, with black speckles laterally, scantily covered with 

 concolorous hair ou top, rather thickly at the sides. 



Corethra cinctipes Coq. (The Eing-Legged Corethra ) . — Larvas were 

 taken occasionally in the early spring, always with the early stages of 

 other species of mosquitoes. The fact that it has never been taken in 

 fall by any of the collectors seems to show that it does not hibernate in 

 the larval stage as does Sayomyia. alhipes. 



Corethrella hrakeleyi Coq. (Brakeley's Corethra). — Mr. Brakeley 

 sent in hibernating larvae and pupae from Lahaway, where he collected 

 them May 15th. Adults from this lot issued June 7th, when the 

 culture was closed and the few remaining larva? were placed in 

 alcohol. 



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