98 On a new Species of Calosoma. 



XIIT. — Description of a new Species of Cnlosoma {Coleoptera, 

 Geodephaga). By Ghas. O. Waterhouse, F.E.S. 



Having had occasion to examine tlie genus Calosoma from a 

 geographical point of view, I was surprised not to find the 

 following Australian species described. It is of interest 

 as approaching in its general appearance the species from 

 Kew Caledonia — Calosoma oceanicum. I propose to call it 

 C. Walkeri. 



Calosoma Walkeri^ sp. n. 



Statura G. sycophanUe, minus convexum, thorace augustiori. Nigrum, 

 nitidiim ; thoracis marginibus viridi tiuctis ; elytris brunneo- 

 cupreis, punctato-striatis, iuterstitiis parum convexis, subloevibus, 

 marginibus aiiguste viridibus ; corpore subtus viridi-tiucto ; 

 pedibus obscure piceis. $ . 



Long. 13, lat. 6| lin. 



Hah. W. Australia, Swan River {Macgillivraij) ; Roebuck 

 Bay (/. J. Walker). 



In general form this species resembles G. sycophanta, but 

 the thorax is relatively rather narrower and the elytra are 

 much flatter. The head is smoother, with a little green near 

 the eyes. The thorax has the same form, but perhaps the 

 sides are a little less sinuate posteriorly ; the surface is 

 smoother, the disk black, the rest of the surface tinted with 

 copper, the extreme margins green. The elytra are brownish 

 coppery, with a little green near the scutellum and on the 

 margins ; they are punctate-striate, but the strioj are only 

 lightly impressed, and consequently the interstices are only 

 gently convex. The usual punctures on the fourth, eighth, 

 and twelfth interstices are very small and are only visible 

 in some lights near the apex. The underside of the body is 

 pitchy, with bright green reflections. 



As the species of this genus are extremely difficult to deter- 

 mine, it may be useful to note that the type specimens of the 

 following species are in our Natural History Museum : — 



Calosoma ampUator, Bates. Cent. Amer. 



l(sve, vav. puiictidicoUe, liatos. Cent. Amer. 



, var. cxplanaticolle, Bates. Cent. Amer. 



, var. microyonnm, Bales. Cent. Amer. 



omilfeniiuiii, Bates. Cent. Amer. 



(liviiuutum, Bates. Cent. Amer. 



moreUanum, Bates. Cent. Amer. 



7)y;v>,<j//-o«,<, Bate*. Cent. Amer. 



galapageium, Hope. Galapagos Is. 



