6 
PSYCHE 
[February 
barred area. The anal gills are one and one half times as long as the ninth 
segment. 
Culex siplwtialis (frossbeck. 
Four specimens of the larvae were taken in a swampy woodland area, near 
New Brunswick, N. J., April 25, with Culex canadensis and Corethra cinctipes 
They were recognized as new to us by the unusually long and tapering anal 
siphon, and were put in a separate jar to breed; they did not do well in confine- 
ment and May 7, two died, so the other two were put in alcohol. April 27, 
twenty specimens, all rather well grown were brought in, and on May 2, as many 
more. They were comparatively rare, and difficult to secure, seldom rising to 
the surface and inhabiting only the deep pools. 
The larva measures 9-1 1 mm., in length e.xcluding the anal siphon and is not 
robust in appearance. The body is light gray or yellowish brown in color, with 
the thorax somewhat darker. The head is about one and one half times as broad 
as long, yellowish to light brown, though the vertex is often clouded so as to give 
the appearance of a dark brown head. The posterior part of the vertex is marked 
bv four spots and a semi-circular blotch, which are often obscured by the clouds. 
Four tufts of two hairs each are situated on the top of the head in the anterior 
part and a larger tuft is at the base of each antenna. The antenna is moderately 
long, somewhat sharply curved, the surface sparingly set with spines, rather 
thickly at the base, and with three or four regular rows of minute spines from the 
base toward the apex on the inner side. The tuft is well below the middle and con- 
sists of but two or three hairs. In color the antenna is brown, very dark toward 
the tip, the apex with three spines of different lengths, a very short spine and a 
small joint. The eyes are large and black and the rotary mouth brushes are pec- 
tinated in the central hairs. The mentum has slightly curved edges of ii or 12 
teeth on each side of the apical one and becomes very broad at the base. The 
mandible is normal, with a group of small spines at the base. 'Fhe maxillary 
palpus is set with spines and patches of hairs over the surface and has a chunky 
little joint at its base. 
The thorax is as long as broad, only slightly angulated at the sides, the 
lateral tufts moderately long and, in addition, there are two very small tufts on 
the anterior margin. 
The abdominal segments from i to 7 are oblong or sub-quadrate in form, 
with three or more hairs to the lateral tuft in the first and second segments, 
two hairs to the tuft in the following segments. The eighth segment has from 
24 to 30 scales to each of the lateral patches; the single scales long, with three 
spines at the apex, the central one very long and very fine ones along the sides. 
