224 



tion if I merely specify its distinctive characters. The au- 

 tennal club is shorter, being not quite so long as the preceding- 

 joints together ; the clypeus is quite strongly transverse, and 

 is separated from the vertex by a strongly elevated keel ; the 

 excavation of the thorax scarcely extends beyond the anterior 

 two-thirds of that organ ; the frontal horn of the thorax is 

 distinctly longer than that of C. Lincli, and (as in that species) 

 is more erect than that of C. armatus, being also much stouter 

 than that of either of its congeners ; the scutellam has a 

 strongly punctured furrow following its outline a little within 

 its margin ; and the elytra are strongly punctulate-striate, the 

 sculpture continuing, almost without diminished strength, to 

 the apex. The whole insect is a little more elongate than 

 either of its congeners. 



I have a single specimen taken by Professor Tate at Ouldea, 



C. parvus, sp. nov. Supra nigerrimus ; subtus sat dense longe 



f ulvo-pubescens ; elytris obscure punctulato-substriatis, 



apice l?evigatis ; fronte transversim concava. Long. 6 1., 



lat. 31 1. (vix). 



Mas. Prothorace disco antice excavato, margine anterior! 

 angulatim elevate. 



Fern. Latet. 



The head is very peculiar ; except in being less punctured 

 behind, it resembles that of G. Lincli generally, and especially 

 in having a transverse concavity running across it just behind 

 the clypeus ; this concavity, however, is not keeled behind, but 

 the abruptness of its hinder declivity makes it much more con- 

 spicuous than that of G. Lincli. The prothorax also scarcely 

 differs from that of G. Lincli, save that in place of the anterior 

 horn the front margin is merely angularly defined in an up- 

 ward direction, and scarcely pointed forward over the head. 

 The scutellum, elytra, and antennse also resemble those of 

 G. Lincli. The apical joint of the maxillary palpi is distinctly 

 less cylindrical and more acuminate at the apex than in the 

 other species of Gavonus described. 



I possess two specimens of this insect, one taken at Wallaroo, 

 the other at Port Lincoln. 



G. armatus, Shp. In the South Australian Museum are three 

 very small specimens (the smallest barely 6 1. in length), 

 which I cannot distinguish from this species. The clypeus, 

 however, certainly appears narrower, and is more sharply 

 margined behind. It may possibly be a distinct very closely 

 allied form. There are also two specimens from Kangaroo 

 Island, picked up dead in the scrub by Mr. Tepper, which differ 

 from typical G. armatus in having the hinder elevations of the 

 prothorax much blunter and less prominent ; they do not ap- 

 pear to be specifically separable from the type. 



