INSECUTOR INSCITI.^ MENSTRUUS 71 



interior of the colony, May, 1919," Surinam (J. Bonne- 

 Wepster). 



Culex (Choeroporpa) castor, new species. 



Clasp-filament broadly snout-like, the spine widened and ap- 

 pendiculate. Outer division of lobe of side-piece columnar, 

 long, with a blunt tip without arms ; on the inner angle a long 

 filament with hooked tip and a short filament ; middle filament 

 blade-like ; on the outer angle and a little down the side, a short 

 leaf with fluted edge, and two small setse. Inner division of 

 lobe of side-piece conical, without arms, one filament at the tip 

 and one on the side, each with flattened pointed tip. Second 

 uncal plate with furcation laterally directed, the horn on a 

 level with the lower fork. First plate with a spine at the inser- 

 tion of the articulated plate, the latter broadly expanded. Basal 

 lobes contiguous, moderate, broadly elliptical, oblique, tuber- 

 cular, with short setae. 



Adult with mesonotum bronzy brown, abdomen entirely 

 bronzy black. Palpi exceeding proboscis, pointed. Legs black, 

 femora pale below. Wing-scales broadly ligulate, rather 

 squarely ended. Head with white scales on the sides. 



Type, male. No. 23740, U. S. Nat. Mus. ; "pupa in swamp, 

 coastal region, February, 1917," Surinam (J. Bonne-Wepster). 



Culex (Choeroporpa) maxinocca, new species. 



Clasp-filament rather thickly snout-shaped, the spine slender, 

 appendiculate. Outer division of lobe of side-piece columnar, 

 with a rather long inner arm, bearing a long filament with 

 hooked tip and a shorter blade-shaped one ; middle filament 

 long, blade-shaped, arising near the middle of the inner arm, 

 a minute seta inserted just basad of it ; outer group of four 

 blade-shaped curved filaments from a notch at outer angle of 

 the lobe. Inner division of the lobe of side-piece with the 

 arms well separated, the outer long, the inner short, each with 

 a long stout filament with widened pointed tip. Second plate 

 of the unci furcate, one arm horn-like, the other rounded ; a 

 stout horn-like spine arising near the base of the stem. Articu- 

 lated plate large, infuscated, roundedly widened, with an exca- 



