PANDARUS. 287 



belonging to the genus, two of which are British. Since 

 then the genus has been adopted by Latreille, Desrnarest, 

 Kroyer, M. Edwards, &c., and several new species added 

 to it. 



Anatomy. The body of the animals belonging to this 

 genus is of an irregular oval form. The head is much 

 narrower than in the preceding genus, and we see none 

 of the furrows in the cephalo-thorax which are so well 

 marked in the Dinemoura? and Caligidse. The frontal 

 plates, however, are more largely developed, especially 

 laterally, where they are of considerable breadth, though 

 contracted in the centre. 



The thorax is divided into four distinct segments, though 

 the first is concealed under the head, and is so closely 

 articulated with the second as to be confounded with it. 

 Each of these segments has attached to it one or two 

 lamellar appendages, extending downwards, and mutually 

 covering each other. Those of the first segment are a 

 pair, and are situated at the sides of the thorax, leaving a 

 space between them, which is occupied by the second joint. 

 This joint gives origin to another elytraforui appendage, 

 which is single, but deeply notched in the middle. The 

 third segment has a similar appendage, but much larger, 

 extending across the body, and deeply notched in the 

 centre also. The last ring has no appendage attached to 

 it, but it is of considerable size. 



The abdomen consists of two segments. The first is 

 concealed under the second, and has attached to it on each 

 side a small appendage, toothed on the inner edge. These 

 are considered by M. Edwards as equivalent to the caudal 

 appendages. The second is the larger of the two. 



The antennae are very small, as in the last genus, but 

 have near their base a small, fleshy, projecting lobe ; and 

 the mouth-apparatus resembles closely that of Dinemoura 

 also. The foot-jaws are short, and do not differ in struc- 

 ture from those of Dinemoura. There is no sternum. 



The feet are four pairs ; they are all composed of two 



