72 INSECUTOR INSCITI^ MENSTRUUS 



vation on the margin. Basal hooks long and well curled, but 

 membranously broadened, though with short tip. Basal ap- 

 pendages moderate, oblique, rather well separated, with many 

 fine short setae. Harpes with about seven teeth. 



The adult has the head and mesonotum with dark bronzy 

 brown scales, palpi longer than the proboscis, pointed, black ; 

 abdomen with narrow basal segmental white abdominal bands ; 

 wing-scales rather broadly ligulate with rounded ends ; legs 

 bronzy black, the femora paler beneath. 



Types, four males, No. 32741, U. S. Nat. Mus. ; "larvae in 

 ground pool in the interior of the colony, May, 1919," Surinam 

 (J. Bonne-Wepster) . 



Larva. Head broadly rounded, antennae long, the latter en- 

 tirely dark; head lightly infuscated, darkly at top of clypeus 

 and behind eyes. Head hairs, upper in fours, rather long, 

 lower single, long. Air-tube long, flared at base and a little 

 at tip, about eight times the basal width ; pecten of short teeth, 

 reaching one-third, the apical ones distantly spaced ; hair-tufts 

 very small and slight, three tufts, approximated to the pos- 

 terior margin of the tube, the two basal ones well dislocated, 

 the apical pair approximate, each with four or five short hairs. 

 Lateral comb of the eighth segment of many small equal spines 

 in a patch, three rows deep, the single spines with widened, 

 fringed tips. Skin minutely spicular, the spicules longer at the 

 extremities, but not forming pile. 



Culex (Choeroporpa) tosimus, new species. 



Clasp-filament broadly snout-shaped, the spine widened and 

 appendiculate. Divisions of the lobe of the side-piece as in 

 maxinocca described above. Second uncal plate also as in 

 maxinocca, the articulated plate with rather narrow stem, then 

 roundedly expanded at apex. Basal hooks very short, curved, 

 but not to reach their own origin, the point sharp. The harpes 

 have fine delicate pecten, about ten teeth, the apical tooth 

 strong. 



The adult is without head ; the mesonotum, abdomen and 

 wing-scales as in maxinocca. 



