3S6 CLASS INSECTA. 



together, and presents between its crotchets, a small linear 

 and silken appendage. 



The species which serves as type C. Dejeimii, is found in 

 Java, and has been sent to the Museum of Natural History, 

 by M. Diard and the late M. Duvaucel. The antennae have 

 but four articulations, and differ in that respect from those 

 of the rhipicera, which have very much the same figure, but 

 whose articulations are much more numerous in individuals 

 of the same sex, or males. 



Sometimes the tarsi have underneath membranous palettes, 

 or their penultimate articulation is deeply bilobate. 



In the two following subgenera, the first four articulations 

 of the tarsi present, each underneath, two membranous and 

 advanced lobes. The last is long, and terminated between 

 the crotchets by a small silken appendage. The antennae of 

 some are composed of more than eleven articulations, disposed 

 like a fan ; those of the others have also eleven, toothed like 

 a saw, and of which the last four being thicker, form a club 

 or knob. 



Sandalus, Knock. 



The antennae, at least those of the females, are simply a lit- 

 tle longer than the head, composed of eleven articulations, of 

 which the third and the following, the last excepted, formed 

 like the teeth of a saw, and the last four, a little more dilated, 

 compose a knob. The terminal one is almost oval, rounded, 

 or very obtuse at the end. (Sandalus petrophya. Knock. N. 

 Beyt. I. p. 131, v. 5 ; S. niger, ejusd, ibid.) 



Rhipicera, Lat. Kirb. Ptyocerus, Hoffmans. Polytomus, 



Dalm. 



The antennae form in the two sexes a fan, and are com- 

 posed of a great number of aiticulations (20 — 40), but in 

 less quantity in the females. 



