INSECUTOR INSCITI;E MENSTRUUS 177 



black scaled dorsally, venter golden ; lateral segmental pos- 

 terior silvery bands, reaching well up the sides. Legs black- 

 ish, the femora pale below and with two small silvery spots 

 on the outer side following a basal streak on fore and mid 

 legs ; hind legs with one spot. Cross-veins in line ; wing scales 

 blackish. 



Male. The antennal segments are somewhat shorter than 

 in the female. Proboscis and palpi as in the female, the 

 coloration also the same. Abdomen black with bronzy re- 

 flection, large triangular silvery spots posteriorly on the seg- 

 ments laterally, six in number, the first on abdominal seg- 

 ments 1-2, none on the eighth segment ; venter yellow, without 

 spots ; last segment black. 



Hypopygium. Side pieces conical, small, with an inner 

 hairy simple lobe that reaches beyond the middle of the side 

 piece. Clasper as long as the side piece, constricted slightly 

 before the middle, the tip a little flattened and with slight 

 granules ; terminal spine short and pointed, inserted subapically. 

 Tenth stemites large and prominent, wide, constricted before 

 tip, the strong short terminal teeth radiating. Aedoeagus 

 small, conical. Ninth tergites large, with many very long ter- 

 minal spines. 



Types, male and two females (one headless). No. 23717, 

 U. S. Nat. Mus. ; Los Bafios, P. L, February 16, 1915, Septem- 

 ber 9, 1918, January 21, 1919. 



Evidently allied to Rachionotomyia poxvelli Ludlow (Ura- 

 notacnia powelli Ludl.. Can. Ent., xli. "^Bo, ]909), but the 

 coloration of the abdomen as described is quite diflferent. Mr. 

 F. W. Edwards has called my attention to the generic correc- 

 tion for pozveUi while this article is in press, so that there has 

 been no opportunity for a comparison of types. 



CULICINI 



Culex (Jamesia) concolor Robineau-Desvoidy. 



Culex concolor Robineau-Desvoidy, Mem. Soc. Hist. Nat., Paris, 

 iv. 405, 1825. 



Culex (Culex) gelidus Theobald. 



Culex gelidus Theobald, Men. Culic, ii, 20, 1901. 



