458 REVISION OP THE AUSTRALIAN AMARYGMIDES, 



possible that the addition of " and nitid " to the " black '' in 

 describing the underside may be a reference to the iridescence as in 

 describing other species (e.g. cyani2}ennis), in which the underside 

 only differs in colour in the absence of iridescence Mr. Hope calls 

 the underside simply "black." "Elytra punctulate-striate," 

 moreover, presents a slight difficulty ; but here again the insect I 

 have described presents some excuse for the phrase, for although 

 when carefully examined it is seen that the elytra are not 

 genuinely striate, yet the interstices being distinctly not quite 

 flat, and the punctures in the series close, there is certainly some 

 superficial appearance of striation in contrast with the absolute 

 want of it in cupripeimis and numerous others of the genus. 

 Compared with C. cupri^jennis the species differs inter alia as 

 follows : the eyes are much less widely separated, the head is 

 evenly punctured (without a Isevigate space between the eyes), 

 the prothorax is more strongly punctured and much less trans- 

 verse, the interstices of the elytra are less flat and less strongly 

 punctured so that the seriate punctures appear more distinct, the 

 general form is larger and more elongate, and the underside is 

 iridescent. The last-named character furnishes a distinction from 

 nearly all the other Chalcopteri known to me. The elytral 

 outline (viewed from the side) is a very gentle curve, with its 

 summit about the middle of the length. From C. fervens, Germ., 

 this species differs inter' alia by its much more elongate and 

 parallel form, and its prothorax (not evenly narrowed in a regular 

 curve from the base but) narrowing only slightly from the base to 

 the middle, and then much more strongly forward. 

 S. Australia ; widely distributed. 



C. IRIDIVENTRIS, sp.nOV. 



Ovalis ; subelongatus ; sat nitidus ; niger, et supra et subtus 

 iridescens (exemplo typico subtus magis Isete quam supra), 

 viridi- cyaneo- aureo- et purpureo-versicolor ; capite sat 

 sequaliter sat crebre punctulato ; ocilis quam antennarum 

 articuli basalis longitudine fere minus inter se remotis ; 

 sulcis ocularibus nullis : antennis quam corporis dimidium 



