210 STUDIES IN AUSTRALIAN ENTOMOLOGY, 



I have been unable to determine this species with certainty, so 

 append de Castelnau's description : — 



" Promecoderus strmto-ptmctatus ; length 7^' ; very nearly 

 allied to the preceding [P. /fiaritimyis], but head smaller ; elytra 

 more parallel and cylindrical ; the first article of the antennje is 

 of a dark brown, the following black, and the four last of a dark 

 reddish brown ; the general colour is dark but brilliant, and more 

 or less metallic." 



"I have one specimen from the mountains of Victoria, and 

 another from the Darling River." 



M. Putzeys merely briefly notices this species in the following 

 terms : — " Very close to P. nigricornis, from which, however, I 

 think it different on accouut of its longer elytra, which are not 

 nearly so wide in the middle ; their apex is less convex. In all 

 other respects the two species are identical." He gives the mea- 

 surements as — length 13^, elytra 8|, breadth 5 mm. ; and adds 

 that de Castelnau's two specimens were $. 



From these i-emarks, and the difference of the sex in the 

 described specimens of P. nigricornis and P. striato-punctahos, 

 I believe them to be the same species. 



The name P, striato-punckUis is an unfortunate one, and if, as 

 I think probable, the puncturation of the striae has been caused 

 by the action of spirit, it should probably be allowed to drop 

 out of our nomenclature. 



Promecoderus nicxRicornis. 



P. nigricornis, Casteln. I.e. p. 167 ; Putz. Revis. 1873, p. 331. 



This is another of de Castelnau's species that I do not know ; 

 the following is his description : — 



" Promecoderus nigricornis : length 7', black, brilliant ; head 

 and thorax of a dark copper colour ; head smooth, with two 

 punctures in front, and a very faint transverse impression behind 

 the eyes ; thorax cordiform, con vexed, impressed transversally in 

 front and behind with a deep longitudinal sulcate in the middle ; 

 on the sides of the sulcate are faint transverse striolae ; elytra 

 oval, convex covered with faint longitudinal strise ; their posterior 

 part is rather corrugated ; their margin has no punctiform 



