i6 AGRICULTURAL EXPERIMENT STATION. 



small, inconspicuous jointed structures in the female; but prom- 

 inent features in the males of most species, extending to the tip 

 of the beak or even beyond it. In this sex the joints become 

 thicker toward the tip and the terminal joints have long tuftings 

 of hair on the inside. Just above the beak and between the eyes 

 are the antennae or feelers ; long, jointed organs, that are usually 

 shorter than the beak. In the female the joints making up the 

 antennae are slender, cylindrical, very much alike, and set with a 

 few long hairs, making a sort of ring. In the male, on the other 

 hand, the joints are shorter at the base, cup-shaped, one cup 

 partly fitting into the other and around the rim of the cup are 

 long, silkv hairs, so that, under the ordinary glass, the feeler 

 appears to be feathered or like a plume. Above the cup joints 

 are two long, slender segments, which are not specially modified. 



The eves occupy most of the side and top of the head, but offer 

 nothing of importance for our purpose. Those who have a 

 microscope at command will find the scales on the vertex to be 

 interesting and for some species (juite characteristic. 



The thorax is usually the stoutest part of the insect body, and 

 its color gives the prevailing tint to the insect. As a rule it is of 

 one color or uniform, but some of our species have stripes and 

 lines of blue, golden brown or white, and one of them is ob- 

 scurely spotted. Sometimes the sides are quite different from the 

 top or dorsum, and we get the appearance of a broad, dusky 

 stripe down tlie middle. In some species the surface is smoothly 

 set with fine hair or scales; but in others there is an admixture 

 of long stout hair and we g-et a spiny or bristly appearance. 

 Sometimes these bristles are arranged in regular rows or lines, 

 and altogether there is quite a little difference in appearance. 



There is, attached at the sides, a pair of narrow wing^s, veined 

 nearly as in the figure, and these are transparent and unspotted 

 in the majority of our species. In general, when the wings are 

 spotted or otherwise marked, the insect may be set down as 

 Anopheles. We have two species of Cule.v in which the wings 

 are a little mottled, but these are rare and small, not likely under 

 ordinary circumstances to coiue to the attention of collectors. 

 Along- the veins and the lower margin of the wing is a series of 

 very pretty scales ; but these require a microscope for their ap- 

 preciation. 



The legs are long, slender structures made up of a number of 

 pieces or parts. At the base is the femur or thigh, attached to 

 the body by means of a small hinge joint or coxa. This femur 

 is sometimes decidedly lighter in color on the side next to the 

 body. The tibia or shank is attached by its base to the tip of the 

 femur and is usuallv uniform in color; sometimes, however, it 



