204 STUDIES IN AUSTRALIAN ENTOMOLOGY, 



It is unnecessary to minutely describe this well known species. 

 It is of convex form, with strongly sti'iated elytra, the marginal 

 border of the prothorax subsinuate in front of the base, the 

 ventral segments with only a linear impression on each side, the 

 tarsi rather broad, the last joint of the posterior tarsi flattened 

 and broad at the base. 



The following are the measurements of a specimen (2) in my 

 collection from Southern Tasmania: — Length 14, breadth 5^; 

 elytra 8-^ x 5| ; prothorax 4;| x 4 mm. It seems a common 

 species in Tasmania. 



Promecoderus mastersi. 



P. Mastersi, Macl. I.e. p. 332. 



5. — Dark bronze above, with a coppery tinge on the elytra 

 (this most noticeable in the strije) ; under surface shining black, 

 with sometimes a greenish tinge ; tarsi, palpi, and antennae 

 brown ; first joint of antennae lighter. Head rather large, frontal 

 impressions punctiform on the clypeus, and very feebly impressed 

 backwards towards the vertex ; the clypeal suture lightly marked ; 

 the vertex with a broad transverse impression ; eyes large, not very 

 prominent, inclosed behind ; the post-ocular prominences con- 

 spicuous, about half the size of the eyes. Prothorax subcordate, 

 a little broader than long (4J x 4J mm.), convex (very slightly 

 flattened along the median line) transversely impressed but not 

 declivous behind ; the sides lightly rounded and gently narrowed 

 behind ; the anterior angles truncate ; the basal angles sharply 

 defined though slightly obtuse ; the marginal border narrow, 

 widened on the anterior angles, not sinuate before the basal 

 angles ; the median line deeply impressed. Elytra convex, oval 

 (9 X 5| mm.), not narrowed to the base, sloping gently to the 

 peduncle, striate, with four or five well marked shallow striae on 

 each side of the suture ; the sides smooth, with traces of obsolete 

 striae ; the interstices flat. The lateral foveee of the ventral 

 segments very lightly impx'essed and extending inwards as a 

 transverse linear impression. 



Length 14^, breadth 5| mm. 



