1873.] ^-*- [Croteh. 



SlLPHID.E. 



Anterior coxse conical, prominent, contiguous, cavities usually open. 



Posterior coxae transverse contiguous. 



Ventral segments 6. 



Tarsi variable. 



This family appears to me probably composite ; but I have not yet 

 been able to differentiate all its sub-divisions. Sphcerites has only 5 ven- 

 tral segments, with truncate elytra. Leptodirus cannot remain here, with 

 distant posterior coxae ; Catops has the anterior coxal cavities more or 

 less closed ; Anisitoma also has the cavities closed, though the epimera 

 are not united to the prosternum. Clambus is probably a family, and also 

 Leptodirus. It differs from the other families with contiguous coxa' by 

 the presence of a trochanter. 



BliATHINIDiE. 



Anterior coxae large, conical, prominent contiguous, cavities closed. 

 Middle coxae also conical, prominent, contiguous. 

 Posterior coxae transverse prominent, contiguous. 

 Ventral segments 6. 

 Tarsi 5-jointed, simple. 



Form of Scydmamus but differing by the middle and posterior coxa\ 

 and evidently forming a distinct family. 



Scydm^enid^;. 



Anterior coxae conical, prominent contiguous, cavities open. 



Posterior coxae conical, distant. 



Ventral segments 6. 



Tarsi 5-jointed. 



Eyes coarsely granulated. This family has a well defined facies. 



CORYLOPHIDvE. 



Anterior coxae ovate prominent, contiguous, cavities open, no tro- 

 chanter. 



Posterior coxae distant. 



Ventral segments 6. 



Tarsi 4-jointed, and 3d very minute. 



Wings fimbriate as in Tricliopteryx, thorax generally produced over 

 the head, elytra sometimes truncate behind. United by Erichson with 

 Coccinella, from which it differs by the coxa? and simple. claws. 



SCAPHIDIID^E. 



Anterior coxae large, prominent contiguous, cavities open. 

 Posterior coxae distant. 

 Ventral segments 6. 

 Tarsi 5-jointed, filiform. 



Elytra truncate, 3 or 4 dorsal segments corneous ; 5th ventral segment 

 large. A small well defined family. 

 a. p. s. — VOL. XIII. K 



