426 NEW YORK STATE MUSEUM 
genus in the following particulars. The mandible has but one 
large bristle or curved spine at the apex (in all specimens exam- 
ined); the papillae of the maxillae are elongate and sharply 
pointed; and the blood gills at the posterior end are only two 
in number. | 
The characters of the species are as follows: Head rounded, 
somewhat flattened; eyes very small, round, and black; rota- 
tory fan conspicuous; antennae slender, uniformly pale in color, 
the lateral tuft represented by a single seta, its terminal appen- 
dages short, consisting of two or three slender setae, a blunt 
spine and the usual short terminal joint [p1.47, fig.1]. . The man- 
dibles [fig.2m] are shaped like those of Culex but appear to have 
but one stout, curved seta at the apex; the bearded process 
caudad of the teeth has a stouter base than in Culex; maxillae | 
[fig.2%] elongate, pointed papillae and several terminal setae 
pesides the usual long hairs. The labrum resembles that of 
Culex, the clypeus with a pair of rather elongate blunt spines. 
Epipharynx as in Culex, though with but two instead of four 
spines. The labium triangular with a long central tooth and 
nine teeth on each side of this [fig.21]. The gula is apparently 
without setae. On the dorsal surface of the head between 
the bases of the antennae in a transverse row are four 
small setae, and caudad of each of the two inner ones 
is another. Thorax quadrate, wider than long, lateral margin 
sinuous; dorsal hairs short, those of the three lateral groups 
long; abdomen slender, segments subequal in length, the 
long lateral hairs about of equal length, those on the 
anterior segment, four to six in number, ‘diminishing in 
number caudad, so that on the last two segments there are 
usually but two on each side. The dorsocaudal and ventro- 
caudal tufts short and composed of two or three hairs. The 
lateral combs of the eighth segment consist of 15 to 20 stout 
teeth arranged in a single somewhat irregular transverse row. | 
The air tubes rather short, about three times as long as its | 
greatest diameter; with four rows, each with five or six long 
setae [fig.6]. The two longitudinal rows of teeth which are | 
present in Culex are entirely wanting. The anal segment is | 
short, with two inflated translucent blood gills and with dorso- | 
caudal, laterocaudal and ventrocaudal tufts of long hairs; the 
ventral brush wanting. 
The pupa has the posterior margin of the swimming paddles 
ciliate with short hairs instead of terminating with a single | 
bristle as it does in Culex. Near the anterior margin of the 
thorax is a pair of long setae, caudad of which are two pairs | 
of short forked hairs. The breathing trumpet [fig.4] is like: | 
