INSECUTOR INSCITI^ MENSTRUUS 75 



pendages rather small, elliptical, oblique, shortly setose, rather 

 narrowly separated. 



The adult has some white scales on the sides of the head, 

 mesonotum with bright bronzy brown scales, abdomen with 

 white basal segmental bands. Legs dark brown, the knees pale. 

 Wing-scales ovate, but not very broadly so. Male palpi longer 

 than the proboscis, pointed. 



Type, male. No. 22744, U. S. Nat. Mus. ; "larvse in ground- 

 pool, interior of colony, January 24, 1919," Surinam (J. 

 Bonne-Wepster) . 



Larva. Head wider than long, rounded ; head hairs, the 

 upper in twos, delicate, the lower long and single. Skin spicu- 

 lar-pilose, showing strongly on thorax and on sixth to ninth 

 segments. Lateral comb of the eighth segment of rather few 

 large pointed-tipped scales in a triangular patch, the patch 

 about three rows deep and the scales all alike in size. Anal 

 segment spicular-pilose on posterior margin. Air-tube straight, 

 rather short, tapered a little gradually outwardly, about six 

 times the basal width ; pecten reaching over one-third, but of 

 few teeth, the outer ones gradually longer; five pairs of pos- 

 terior hair-tufts, approximated along the posterior margin, 

 but not dislocated, distinctly long, decreasing in length out- 

 wardly. 



Culex (Choeroporpa) iolambdis Dyar. 



Culex (Choeroporpa) iolambdis Dyar, Ins. Ins. Mens., vi, 106, 

 1918. 



Clasp-filament narrowly snout-shaped. Outer division of 

 lobe of side-piece rather shortly columnar, with a slender inner 

 arm bearing a long' filament with hooked tip and a short blade- 

 shaped one ; middle filament blade-shaped, a small seta inserted 

 below it ; outer group of three filaments curved and blade- 

 shaped. Inner division of lobe with the arms not separated, 

 the outer longer than the inner, each with the usual filament. 

 Second uncal plate furcate, the inner limb denticulate, the outer 

 smooth ; a small horn on the stem just at the fork. Articu- 

 lated plate expanded, straight on the margin, infuscated. Basal 

 hooks rather long, recurved, somewhat flattened, but with 



