BY THE REV. T. BLACKBURN. 457 



margin ; the vspace occupied by these stripes is slightly depressed. 

 The basal crest is placed longitudinally on each elytron. The 

 lighter part of the elytra being regarded as the ground colour, there 

 appear, — a common somewhat quadrate, dark basal spot, — a sub- 

 tiiangular dark spot on each elytron having its base on the lateral 

 margin and its apex (which is truncated and forms an obscure 

 longitudinal carina) near the suture, — and a common, subtriangular, 

 apical, dark spot. These markings are more obscure as specimens 

 are less fresh, but in all I have seen of the genus I can discern 

 traces of them. In the specimen on which I found /. Meyricki 

 they are extremely obscure. 



Western Australia; collected by E. Meyrick, Esq. 

 PHYTOPHAGA. 



DiAPHANOPS. 



Dr. Chapuis in Vol. X. of the " Genera des Coleopteres " men- 

 tions the existence in collections of several forms closely allied to D 

 Wester?nanni, Boh., some of which he thinks may be distinct species. 

 I have recently examined the specimens appertaining to this genus 

 in my own collection and in that of the South Australian Museum, 

 all from Western Australia, and find among them three forms that 

 certainly appear to be specifically distinct i7iter se. I am doubtful 

 whether any one of them is D. Westermmmi, but one is suflB.ciently 

 near to be disqualified from being regarded as certainly distinct. 

 The points in which it differs from the description of Rhynchostornis 

 curculionides, Lac, (which Dr. Chapuis asserts to be identical with 

 D. Westermanni) are as follows, — the prothorax is less elongate 

 and more coarsely punctured than the description would lead one 

 to expect. The length of the prothorax is said to be ^ greater 

 than the width. I cannot help thinking that this statement is 

 founded on a mistaken observation, for although the prothorax on 

 casual view appears very elongate I find that careful measurement 

 shows the widest part of the prothorax in all the examples I have 

 seen of the genus to measure at most very slightly less than the 



