270 



Dr. Sharp's Revision of the 



In the male, each elytron is furnished at the apex, 

 close to the suture, with a distinct elevated tubercle; 

 the apex of the dorsal plate of the seventh segment of 

 the abdomen has a notch in the middle, and the hind 

 margin projects somewhat on each side of the notch. 



Found, very rarely, by Mr. Brewer, on grassy banks, 

 at the sides of the Med way, near Chatham. 



Obs. — I have seen this species alive, and find that it 

 not only simulates a Gyrophcena in appearance, but that 

 the abdomen is doubled up over the head when the insect 

 walks about, exactly as in Encephalus complicans. 



INDEX. 



Skction a. (p. 93). 



Group I. (p. 94). 

 Group II. (p. 103). 

 Group III. (p. 109). 

 Group IV. (p. 117). 

 Group V. (p. 127). 



Section B. (pp. 93, 138). 



Group VI. (p. 138). 

 Group VII. (p. 142). 



Section C. (pp. 93, 160). 



Group VIII. (p. 160). 

 Group IX. (p. 165). 



Skotion D. (pp. 93, 169). 



Group X. (p. 169). 

 Group XI. (p. 174). 

 Group XII. (p. 180). 



Section E. (pp. 93, 184). 



Group XIII. (p. 184). 

 Group XIV. (p. 187). 

 Group XV. (p. 193). 



Section F. (pp. 93, 216). 



Group XVI. (p. 216). 

 Group XVII. (p. 225). 



Section G. (pp. 93, 232). 



Group XVIII. (p. 232). 



Section H. (pp. 94, 234). 



Group XIX. (p. 234). 

 Group XX. (p. 240). 

 Group XXI. (p. 254). 

 Group XXII. (p. 261). 



