BY H. .T. CARTER. 95 



//. horridus Blackb. So far as I am aware, this group is confined 

 to New South Wales and Victoria, but enjoys a wide range over 

 this area. I have examined a very large number of specimens, 

 and liave twenty-two specimens befoi'e me now. It may be 

 doubted whether the four are not merely geographical varieties 

 of the same species; but for the present I will note my own 

 observations on the differences noted in the types inspected, and 

 in the specimens observed. 



//. ovatus Guer., is the largest of the four, and the only one 

 having distinct costse, two on each elytron, the first a short 

 scutellary costa, the second more or less parallel to tliis, both 

 being uninterrupted or non-nodulose, at least, on basal part of 

 disc. The outside edge of elytra (seen sideways) is very thin and 

 laminate, but a little recurved; while the extreme edge of the 

 prothorax is wide, convex, and so much recurved as to be nearly 

 horizontal. My note on inspecting the specimen in the Hoi)e 

 Museum is, that it is only a variety of H. echinatus Hope. My 

 largest specimen, from Cowra, N.S.W., measures 17x12 mm.; 

 other specimens from Mulwala and other parts of New South 

 Wales are normal in size. 



H. tuherculatus Breme. — I do not think I have seen the type 

 oi this, but, from de Breme's figure, it appears to be the form 

 commonly found throughout the whole of New South Wales. I 

 have specimens from Mudgee, Muswellbrook, Camden, Gunta- 

 wang, Baan Baa, etc., varying in length from 10^ mm. to 14 mm. 

 They can be distinguished from the other three species by Mr. 

 Blacb burn's test as to the comparison of the extreme margins of 

 the prothorax and elytra. Alone of the group, this species (if I 

 am correct in ray identification) has the extreme edges of the 

 elytra, seen sideways, more or less concave or flat, and similar 

 to, though sometimes slightly narrower than, those of the pro- 

 thorax, which are narrower and much less upturned than in H. 

 ovatus Guer. The tubercles are also smaller than on the other 

 species, and, in general, round. 



//. echinatus Hope. — The type or cotype of this is probably 

 the specimen referred to by Sir W. Macleay (These Proceedings, 



