84 Mr. A. Murray on the Genus Cercyon. 



leave only a black spot on the disk, at other times reduced 

 to a sort of reddish point. Prothorax, «. entirely black ; 

 ^. bordered with red ; 7. entirely of a reddish brown or tes- 

 taceous red. 



Var. D. Head brown. Prothorax black or reddish brown. 

 Elytra entirely testaceous red. 



Var. E. Elytra very much dilated. 



Length 1 to 1^ line ; breadth f to 1 line. 



This species, although variable, is in general easily distin- 

 guished. Its oblong depressed form of body, with striae very 

 slight at the base of the elytra deepening gradually into deep 

 sulci towards the apex, are peculiar to itself. 



Common on the sea-shores under marine rejectamenta. 



C. aquaticum, Steph., Muls. 



Oval, at least as broadly rounded in the last fourth as in the 

 first, moderately convex and densely marked with small punc- 

 tures above. Head and prothorax black, the latter bordered with 

 red on the sides ; sutural angle of elytra at the apex straight, 

 with eleven narrow striae marked with round punctm-es scarcely 

 broader than the striae ; black, with the extremity and a lateral 

 border yellowish red. Mesosternal plate somewhat ovular. 



Var. B. The reddish brown or testaceous red margin of the 

 sides of the prothorax reduced to a punctiform patch, more 

 or less apparent near the anterior angles. 



Length 1 to 1^ line; breadth f to 1 line. 



This has much analogy with the following species. The cha- 

 racters which distinguish it are these : — It wants the prolongation 

 at the apex of the elytra, of which I shall presently speak, has 

 the margin of the thorax pale instead of black, wants the black 

 base and suture of the elytra, has the mesosternal plate of an 

 ovular form instead of a linear form, and is altogether of a more 

 oval shape. 



C. flavipes, Fab., Steph., Muls. 

 heemorrhoidale, Sturm. 

 melanocephalum, Gyll. 

 suturale, Steph. 

 ' femorale, Steph. 

 picinum, Steph. 



Oblong oval, less broadly rounded in the last half than in the 

 first, moderately convex and densely marked with small punc- 

 tures above. Head and prothorax black. Elytra below prolonged 



