122 INSKCUTOR INSCITI^ MENSTRUUS 



long, slender and sharply angled, as it is in both coronator 

 and oiisqua. 



The larva, also, differs markedly from that of coronator, 

 having a comparatively stout and uniform air-tube without 

 trace of the crown of subapical spines. 



Culex (Culex) usquatus, new species. 



Proboscis showing a broad pale band below in the female, 

 white ringed in the male ; occiput with brown scales, the eyes 

 margined with white ; mesonotum with narrow curved dark 

 golden brown scales ; abdomen black, with broad basal seg- 

 mental white bands in both sexes ; venter with traces of black- 

 ish apical bands. Legs black, the femora pale below, the tibiae 

 white-lined on the under side ; tarsi with small white rings at 

 both ends of the joints, the last joint with the tip black. 



Types, No. 21913, U. S. Nat. Mus. ; two males and three 

 females, "many larvae found in old boats, in a fallen, nearly 

 burned tree, in very dirty puddles, in water barrels, sometimes 

 Lutsia allostigma preying upon them. Only once found far 

 from human habitations ; in all other cases the breeding-places 

 were near houses. February, 1917. Marowyne and Lawa 

 Rivers. Also, February, 1918. Surinam River" (Mrs. J. 

 Bonne- Wepster) . 



The adult has the coloration of coronator D. & K., ousqua 

 Dyar and surinamensis, described above. The definition is by 

 the male genitalia, which have the upper tooth of the second 

 uncal plate a small straight blade, pointed, but not bent; the 

 lobe of the side-piece is scarcely divided, having outwardly a 

 group of five spines, inwardly the three usual rods, but supple- 

 mented basally by a stout spine and a seta ; the tip of the side- 

 piece bears a dense group of about eight stout setae, situated 

 upon a rounded prominence. 



The larva has a long slender air-tube with two or three 

 spines subapically, much as in ousqua. 



Culex (Melanoconion) zeteci, new species. 



Male. Palpi longer than the proboscis, the last two joints 

 hairy ; legs with the femora whitish below and with distinct 



