20 NOTKS ON A SPECIES OF SANDFLY 



The third longitudinal starts a little beyond the point 

 where the second unites with the first, and pursues a straight 

 course to the border of the apex of the wing. 



Below this and originating about the centre is the fourth 

 faintly marked longitudinal, pursuing a parallel course 

 but dipping slightly, it reaching the edge as far below the apex 

 as the termination of the third is above it. None of these are 

 forked. 



The fifth, arising in the axilla, is very distinct ; it runs 

 obliquely until below the thickened insertion of the first veins on 

 the costal edge ; on reaching that point it forks, the upper 

 arcuating slightly, the lower tending downwards to unite on 

 the lower border at its central point. The petiole is a little 

 more than the length of the fork. A sixth longitudinal faintly 

 marked runs a little below and parallel with the petiole, near the 

 bifurcation of which it terminates. 



The legs are very muscular, and are often used in leaping 

 from one point to another, after the manner of the lively tiea. 

 A jump of fifty times their length is no unusual thing. The 

 pro-legs are the shortest, the middle and hind ones not difiering 

 much in length. The first long joint is the thigh or femur ; the 

 second, rather thinner, is the tibia, or shank ; and the tarsus, 

 or foot, is formed from the last five joints. 



The first joint of the hind foot is noticeable for a row of 

 spines of equal length placed in one line, like the teeth of a 

 comb. The insect actually puts them to this use. Occasionally 

 it can be seen combing out its hairs on the abdomen, and other 

 parts of the body. And I have seen the gentlemen bending down 

 his head, and with the bristles on his fore legs combing out his 

 whiskers, or the long hairs of his antennae, very likely before he 

 went out to visit his young lady. 



The joints of the legs seem to be connected rather loosely 

 together, but this gives them a wide range of movement. Each 

 leg terminates in a pair of slaws widely separated like the hooks 

 of a grappling iron. They are black and sharply pointed. 

 Between these hooks a little feathery organ hangs. I have not 

 been able to reproduce it in a photograph, so have made a rough 

 sketch of it. It is like a root with lateral branches. The shaft 

 and branches are dotted with little cells. No doubt it is the 

 representative of the pulvilli of the housefly. The minute dots 

 are cells secreting glutinous material, which enable it to adhere 

 to smooth surfaces, where the claws cannot obtain a foothold. 

 On the tibia of the female are a few small cones, or club-like 



