ANATOMY OF THE SUGAR LOUSE. 



27 



(Back and front views of the Sugar-louse magnified.) 



The antennse (f, f,) are short, cylindrical, tapering from the base 

 to the tip, and beset with bristles at the joints. 



The head is covered on the upper part with a round plate, and the 

 back with twelve plates of a square form. The under part of the body, 

 reckoning from the head, has only eleven such plates. 



The feet are connected with the three anterior divisions of the body, 

 and consist of five joints, of which the two first are very broad in the 

 middle, and the last very thin and roundish. 



On the hinder extremity of the body, are two short, thin, bristles 

 (palpev, q, o), beyond which upon each side are two very long 

 ones (r, r), and beyond these four others (w, n) shorter, while the 

 last ring of the body ends in a single pointed bristle (schwanzspitze, 

 t), similar to the rest, all of them having precisely the same structure 

 as the antennae. The three longest bristles take their origin from the 

 last back-plate, under which is the vent ; but the short bristles ori- 

 ginate from the last belly- plate (bauchschuppe), between the two 

 halves of which are the external organs of reproduction. 



