532 REVISION OF THE GENERA COLPOCHILA, ETC. 



antennis 9-articulatis ; elytris apice suturali breviter spiuoso- 



producti.s ; prothoracis basi fortiter bisiiiuata, quam margo 



anticus hujus dimidio latiori, angnlis posticis (superne visis) 



valde acutis, (a latere visis) distinctis. 



Maris antennarum flabello stipiti longitudine vix jequali, 4- 



articulato, — articula 1° quam 2"^ sat breviori ; stipitis articulo 



ultimo intus longe acute dentate. 



Feminse antennarum flabello stipite sat breviori, 4-articulato, — 



articulo 1° quam 2"* plus duplo breviori; stipitis articulo 



ultimo intus breviter obscure dentato. [Long. 9, lat. 5 lines. 



The prothorax is about i again as wide as long ; from the front 



angles (which are acute and moderately prominent) the sides 



diverge with a slight sinuation to a little behind the middle where 



they are fairly strongly rounded ; from this point they converge to 



the hind angles sinuately (when viewed from above) but without 



sinuation when examined from the side. 



Compared with C. obesa, Burm., which it resembles in colour and 

 general appearance, — besides the entirely different antennal char- 

 acters, — the present species has a considerably larger and much 

 more strongly and rugulosely punctured head, — the clypeus nearly 

 as long as wide, — the prothorax less transverse and with much 

 better defined hind angles, the elytra much less dilated hindward, 

 with their sutural apex spined, ifcc, &c. 



The specimens on which I have founded the above description 

 are from Port Lincoln ; I have, however, examples from other 

 parts of S. Australia which I cannot make up my mind to regard 

 as genuinely distinct, although they present somewhat puzzling 

 differences, — some are much smaller (ranging down to 7 lines in 

 length), and some have the prothorax a trifle less narrowed 

 anteriorly. It is quite possible that I have before me a group of 

 very closely allied species, — but I do not at present see my way 

 to treat them as such decidedly. 



I may add that this species closely resembles one taken by Mr. 

 Sloane in N. S. Wales and which I believe to he pecto7'alis, Blanch.; 

 that species however (besides antennal differences) has a wider 

 prothoi'ax, apex of elytral suture not at all produced, &c., &c. 

 S. Australia. 



