Genus Deinocerites, 279 
Otto Galgey); St. Vincent; Barbados; British Guiana (Dr. 
Low). 
Time of capture.—May and June in Barbados; July and 
November in St. Lucia ; February, March, July, in Jamaica. 
Life-history and Habits, 
This is essentially a “ crab-hole” breeding form. The water 
in these holes is distinctly brackish. The larvae are found in 
the water at the bottom of these crab-holes near the sea; these 
holes are long winding passages, sometimes three or four feet 
long, and only about four inches in diameter. Dr. Grabham has 
noticed that the females fly about in the breeding jars, but the 
males never seemed to wander far from the surface of the water, 
and this probably accounted for no males being taken, only 
females being found at the entrance to the holes. The larvae, 
parts of which are figured (Figs. 152 and 153), closely resemble 
Culex larvae, but the head presents various modifications. When 
alive the hairs on the thorax and abdomen are quite black, 
giving the larvae a singular appearance. 
Dr. Grabham writes that the antennae in both sexes are 
much shrunken and distorted in pinned specimens; in living 
specimens they are held stiffly in front, somewhat arched down- 
wards ; they are in constant movement, exploring the surface as 
the insect crawls, the movement seems to be effected at the 
basal joints ; in living specimens the ¢ terminal joints are seen 
to be somewhat thicker than those lower down. It seems as if 
the hairs on the terminal joints are erectile. On the end of the 
second joint are a number of peculiar sense organs which are 
probably olfactory (Giles). 
Dr. Low writes regarding the habits of ia species in 
Barbados as follows:—“I found them in crab-holes at the 
side of a pond, but none in the pond itself. Many insects 
flew out of the holes when disturbed. They are sluggish 
in flight, and when disturbed fly slowly from one hole to 
another adjoining. I kept a lot in captivity, but could never 
get them to bite. In many dissected from Calliagua, a village 
in St. Vincent, I never saw any traces of blood in le 
stomachs.” 
Dr. Low sent me a ¢ Culex asa ¢ of this ‘species, just as 
Dr. Grabham did at first. 
