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large mosquito and 1s very, blood-thirsty. It is attracted to the house 
innumbers. The differences between the males and females are well 
brought out in the illustrations, and the striking feathery antenne and 
palpi of the male render it very conspicuous. ‘The wing markings and 
the color of the palpi differentiate this species from our other species of 
Anopheles, and the long palpi of the female at once distinguish it from 
all species of Culex. 
Fic. 7.—Resting positions of Culex (at left) and Anopheles (at right), enlarged (redrawn from a rough 
sketch published in the British Medical Journal). 
Resting position. —Owing to the publication of a field sketch made 
at Sierra Leone by a member of the Ross expedition, and which is 
here reproduced, the writer has been much interested in watching the 
resting positions of the adult insects. He finds that when resting upon 
a horizontal surface—such as the ceiling of a room or the covering of 
the breeding jars—the insect clings with its four anterior legs ina 
nearly perpendicular position, its beak thrust forward toward the sur- 
face to which it clings. The hind legs are frequently in motion, but 
as arule hang downward with more or less of a bend at the knee joint 
(femero-tibial articulation). When resting upon a perpendicular sur- 
face, however—such as the side wall of a room or the side of a breeding 
jar—the body is held only at a comparatively slight angle from the 
surface. Sometimes it is nearly parallel with the surface. At other 
times it assumes an angle of 10° to 20° (occasionally even as great 
an angle as 30° to 40°), the proboscis being held nearly in a line with 
the body. Here again the insect supports itself by the four anterior 
legs, the hind legs dangling down with more or less of a bend at the 
O04) 0 
