66 PROCEEDINGS OF THE NATIONAL MUSEUM VOL. 120 
Larva: Antennal tuft located in a constriction near the outer third; 
basal three-fourths of the antennal shaft sparsely spiculate. Post- 
clypeal head hair 4 single; upper frontal head hair 5 triple; lower 
frontal head hair 6 double; preantennal head hair 7 multiple. Mentum 
with a stout central tooth and two or three stout, lateral teeth, the 
intermediate ones smaller. Abdominal integument glabrous. Comb 
a patch of about 75 spatulate, fringed scales in about four rows. 
Siphonal index about 5.0. Siphonal tufts very small and weak and 
rarely all present, but at most consisting of four pairs of bifid hairs. 
Pecten with 10 to 14 teeth on the basal third of the siphon; most of 
the teeth with three lateral barbs, the teeth progressively farther 
apart distally. Anal segment completely ringed by the saddle. 
MATERIAL EXAMINED.—Thirty-three males and their associated 
terminalia from Brazil. 
DistripuTion.— The type locality is in the state of Rio Grande 
Do Norte, Brazil. The author has seen specimens from the states of 
Pernambuco, Bahia, and Sao Paulo, Brazil. 
Culex (Culex) habilitator Dyar and Knab, 1906 
Ficures 17c, d 
Culex (Culex) habilitator Dyar and Knab, 1906b, p. 212. 
Culex (Culex) eremita Howard, Dyar, and Knab, 1912 [1913], p. 331. 
Systematics.— Culex habilitator lacks a leaf on the apical lobe of 
the basistyle; however, the tenth sternite is crowned with a dense tuft 
of strong spines. The apical lobe is distinctive, being extended into a 
tuberculiform projection and terminating in a strong apical rod. 
SALIENT CHARACTERS.—Adult female: See table 1. 
Male terminalia: Basistyle tubular, two and a half times as long 
as the basal width; not clothed with fine setae in addition to the 
normal, long setal pattern. Apical lobe of the basistyle extended 
into a thumblike projection, terminating in a strong, stout, blunt, 
apical rod and possessing three to four straight accessory setae; 
leaf absent. Dististyle enlarged medially; dististyle claw consider- 
ably longer than normal and sharply pointed. Tenth sternite crowned 
with a dense tuft of short, pointed spines apically and spatulate, 
scalelike spines on the lateral outer margins; basal arm reduced to 
a short, knob; three cercal setae present. External process very 
broad and somewhat twisted in appearance. Ventral cornu absent. 
Median process with, at most, one or two poorly defined teeth (teeth 
generally appear to be absent). Basal process absent. 
Larva: Antennal tuft located in a constriction near the outer 
third; antennal shaft spiculate basally. Postclypeal head hair 4 
short, single; upper and lower frontal head hairs 5 and 6 long, three 
