414 



figured on Plate XXX\^, Figure lo. The eyes are pubescent, a char- 

 acter which places this species in the subgenus Thiciiciiiauuiclla 

 Kieffer. 



Type locality, Havana, 111., April 29, 19 14 (J. R. Malloch). 

 Paratypes from Urbana. 111., May 25, 1914, at light (J. R. Malloch), 

 and from Brownsville, Tex., November 18, 191 1 (C. A. Hart). 



I have made a balsam mount of a male which I consider belongs 

 to similis and find that it differs from the female in having 13 anten- 

 nal joints — not 1 1 as given by Kieffer. 



In color the specimen differs from the female in being much 

 darker, the thorax having black vitt?e and the abdomen being almost 

 entirely black, with yellow hypopygium. The legs are yellow. The 

 wing veins are colorless. 



The eyes are more distinctly pubescent than in the female. The 

 second joint of the palpi is produced apically on one side, the third 

 having the appearance of being inserted considerably before the apex 

 of second. The third vein is continued beyond the middle of the 

 wing, and the stigma-like swelling is absent. 



Length, 1.25 mm. 



Locality, Havana, III, April 30, 1914 (J. R. Malloch). 



Chiroxomus Meigen 



I have not adopted Kieffer's subdivisions of the genus Chironomiis 

 in the present paper, but retain in the genus all those species that have 

 the wings bare and the basal joint of the fore tarsi longer than or sub- 

 equal to the fore tibije. The only exception to the rule is in the case 

 of pscudoviridis, which has the basal joint of the fore tarsi shorter 

 than the fore tibiae. This species and crquolis have the third vein end- 

 ing distinctly farther in front of the wing-apex than the fourth does 

 behind it — a character which seems to indicate an affinity with species 

 of Orthocladius. I hope at some future time to revise the genera of 

 North American Chironomincc — my present material is wholly in- 

 sufficient for the task — but for the purpose of this paper I consider 

 the present generic arrangement the most useful, and less likely to 

 create disorder than that of Kieft'er. Were I to introduce his generic 

 names I could, from the printed descriptions of the species alone, 

 assign but a few of them to their respective positions in his scheme 

 of arrangement, and must leave a very large proportion of the species 

 in the genus Chironomiis with a doubt. Until some one obtains most 

 of our species for study I consider it better to leave matters as they 

 are. 



