INSECUTOR INSCITI^ MKNSTRUUS 181 



bands. On this basis, we consider the above synonymy, while 

 extremely probable, not absolutely assured. 



The larva has a peculiar tapering air-tube with long tufts 

 diminishing outwardly; lateral comb of the eighth segment 

 of 8 spines in a curved row. It lives in permanent water with 

 aquatic vegetation, and has the habit of hanging itself up on 

 leaves, etc., by the hooks of the air-tube or lying on the bottom, 

 seldom coming to the surface. The male genitalia have the 

 basal appendages small and papillose. 



16. Culex (Mochlostyrax) peribleptus, new species. 



Female. — Proboscis black, very slightly swollen at the tip; 

 head with flat black scales, mixed with white ones, especially 

 along the margins of the eyes and on the sides ; narrow curved 

 golden ones posteriorly, which run forward in a triangular 

 patch almost to the front margin in the center ; many erect 

 forked black scales. Integument of mesonotum blackish, 

 rather sparsely clothed with small narrow curved scales, vary- 

 ing from dark brown to golden brown and light golden, the 

 mesonotum appearing under a hand lens black, with illy de- 

 lined golden double dorsal lines and short subdorsal ones 

 posteriorly, with a somewhat curved patch in front of the short 

 stripes. Abdomen black above, slightly violaceous, the bristles 

 at the ends of the segments pale ; lateral spots white, triangular ; 

 venter with the segments white at their bases, broadly black 

 at the apices of the terminal segments. Legs black, the femora 

 white beneath nearly to tips; tips of femora and tibiae nar- 

 rowly pale. Wing scales black, those on the forks of the sec- 

 ond vein narrowly ovate, the outstanding ones linear. 



Male. — The genitalia have the side pieces about three times 

 as long as wide, excavated at the base ; lobe divided, the basal 

 portion again forked, one arm short, one long, each bearing 

 a filament with minutely hooked tip ; outer division produced, 

 bearing a group of filaments at outer third, a leaf just before 

 the tip and a small filament at tip ; clasp narrowed centrally, 

 swollen on outer third, with a terminal groove at the insertion 

 of the small stout terminal spine, the outer margin finely 

 pilose. Harpes narrowly comb-shaped ; unci with the second 



