INSECUTOR INSCITI^ MENSTRUUS 133 



knee-spots, the tips of the tibise also whitish ; tarsi black, un- 

 handed. Integument of the thorax brown, of the abdomen 

 gray, with the tips of the segments blackish, distinctly lighter 

 than in Culex educator and C. hcsitator. The specimen is of 

 about the size of these species or slightly larger, comparable 

 with the smallest males of C. quinqucfasciatns. The specimen 

 is completely denuded of scales. 



Genitalia. Clasp filament long, narrowed outwardly, sinuate 

 on the apical third but not enlarged at tip (possibly it is ellip- 

 tically enlarged at tip with a strong central groove, the part 

 below the groove membranous. The mount is not very clear. 

 If this is the case, the species may be placed in Chccroporpa). 

 Side-pieces three times as long as wide, excavated on the basal 

 two-thirds within ; subapical process divided, the outer limb 

 bearing an elliptical leaf bent to one side, closely accompanied 

 by about five fine setae, not as long as the leaf ; inner limb 

 stouter than the outer, with a large flattened filament with 

 spoon-shaped tip and a second filament inserted on the basal 

 third of the limb. Harpes comb-shaped with about eight 

 strong teeth. Unci divided, the plates all flat, none hook-like ; 

 first plate narrowly triangular, dark brown ; second plate elon- 

 gate, reaching the middle of the side-piece, triangular, mem- 

 branous, with a sharp pointed brown tip ; third plate long, 

 membranous, columnar, the tip curved over and rounded ; 

 lateral plates double, a large triangular dark brown outer one 

 covering a narrowly triangular, roundedly pointed membranous 

 inner one. 



Type, male. No. 21778, U. S. Nat. Mus. ; Gatun, Canal Zone, 

 Panama, January 16, 1913 (J. Zetek). 



Culex (Melanoconion) dunni, new species. 



Head with a broad area of narrow curved scales behind, 

 largely pale and mixed with upright forked black ones ; an 

 area of flat white scales on the sides, running up along the 

 margins of the eyes, but not reaching vertex. Mesonotum 

 pale brown, longitudinally lined with darker brown, clothed 

 with narrow curved bronzy brown scales and long black bris- 

 tles. Abdomen black dorsally in the female with lateral whitish 



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