192 INSECUTOR INSCITI^ MENSTRUUS 



filament near its base, accompanied by a long narrow one ; a 

 long filament with hooked tip at the summit. Mesosomal plate 

 terminating in two sharp points, nearly oppositely directed ; 

 another sharp point at the middle of the stem. Basal hooks 

 strongly recurved, with spatulate tips, exceeding the mesosomal 

 plate. Articulated plate large. Tenth sternites comb-shaped, 

 the teeth flattened and very broad. Ninth tergites very small, 

 elliptical, setose. Clasper narrowly snout-shaped, slender, 

 scarcely widened, but with the characteristic Choeroporpa 

 structure and eye-like seta ; tip hooked ; terminal spine appen- 

 diculate, triangularly widened, nearly as wide as long (PI. V, 

 fig. 5). 



Type, male, No. 25761, U. S. Nat. Mus. ; bred from larvae 

 in Arenal River, Toro Point, Canal Zone, Panama, July 19, 1922 

 (J. B. Shropshire). 



Culex (Carrollia) paraplesia, new species. 



Male palpi short, about one-sixth the length of the proboscis ; 

 proboscis and palpi black. Atennae plumose. Vertex of head 

 with brown scales, broadly whitish along the eye-margins. 

 Abdomen entirely black above, the venter apparently also dark. 

 Legs blue-black, the femora brown below. Wing-scales black, 

 narrowly ovate. 



Male hypopygium. Side pieces elliptical, about twice as long 

 as wide. Clasper with a collar-like enlargement at about the 

 outer third, the part beyond tapering and thorn-like, the spine 

 subterminal, long, appendiculate. A single lobe on the side- 

 piece below the middle, forming a long stout arm, bearing at 

 its tip a single stout tooth-like appendage. Three or four very 

 stout setae between this and the apex. Tenth sternites curved, 

 with comb-shaped tips, containing three or four long slender 

 teeth. Mesosome reduced. Ninth tergites undeveloped (PI. V, 

 fig. 6). 



Type, male. No. 25762, U. S. Nat. Mus.; Puerto Nino, 

 Colombia, February 21, 1922 (Dr. F. A. Miller), communicated 

 by Dr. Wickliffe Rose of the International Health Board. 



