12 



Journal New York Entomological Society. [Vol. xvi. 



fore and middle tibiee black ; the extreme apex of middle tibiae black ; middle third 

 of hind tibiae white, the remainder black or very dark brown ; tarsi of fore legs green, 

 those of other legs white ; the legs with rather long hairs corresponding in color to the 

 parts on which they are. Length 4.5 mm. Wing length 3 mm. 



Taken at Cabin John, Md., June 10. 

 jyp e . —Cat, No. 11 141 U. S. N. M. 



a 



Fig. 9. Wing markings (not to exact scale) : a, C. labeculosits; b, C. tiisvus ; 

 c, C. exquisitus ; d, C. perpulcher. 



Chironomus zonopterus, new species. 



Male. — Antennal joints brown except the first which is tan color, hairs dirty 

 yellow ; palpi brown ; occiput light yellow ; mesothorax light yellow with three deep 

 tan brown vittae ; scutellum yellow ; metanotum tan (quite dark in one case) ; pleurae 

 yellow as also the first five segments of the abdomen (these yellow parts, by traces of 

 color on one of the specimens, are doubtlessly green in life), last four segments and 

 claspers much mottled with black. Wings ( fig. 7, d ) hyaline with two smoky 

 bands, one at the tip quite wide, irregular, distinct, occupying most of the distal part 

 of the wing, the other at the cross vein and fork of cubitus narrow, very irregular, 

 somewhat more indistinct than the other band and extending along the caudal margin 

 almost to the anal vein, costal cell hyaline. Legs (fig. 4) pale yellow except for 

 brown claws and faint brown timings at knees, both on femora and tibiae especially 

 noticeable on hind pair, apices of tibiae, especially hind pair, also tinted faintly brown, 

 their very apical margins black. Length 4.5 mm. Wing length 3.5 mm. 



Two specimens, the type from Clementon, N. J. 



Type. — Male, Cat. No. 11025, U. S. N. M. 



This species appears to differ from the extremely closely related 

 C. fascipennis Zetterstedt in that the band at the tip of the wing is very 

 broad rather than moderate, the middle differs in width and general 

 outline from that of C. flexilis Linne (which the band in fascipennis 

 is said by Zetterstedt to resemble), by lacking a dark spot at the base 

 of the wing, and by possessing darker metanotum, knees and terminal 

 portion of abdomen. 



