Drainage of Melbourne. 107 



Ms " Entomological Fauna of Oceanica," has formed on the 

 same insect his genus Heteroscelis ; and Mr. Westwood, in 

 his " Arcana Entomologica," changed that name, already 

 employed for a genus of Hemiptera, and called it Campyloc- 

 nemis, in allusion to the singular character of the hind 

 tibise, namely, that of being curved. 



Castlenau's generic name, being the oldest, should be 

 retained ; and I therefore introduce it to you this evening 

 as the Hyperion Schrcetteri. 



The Count tells me this insect is very rare in collections. 

 It has been figured by Schrebers, Castlenau, and Westwood. 

 The few specimens previously known were from the eastern 

 parts of New South Wales. Both Count Castlenau and 

 Dr. Godfrey Howitt consider the discovery of this insect in 

 Victoria as a zoological fact of considerable interest, espe- 

 cially as, by its size and remarkable form, it belongs to a 

 tropical fauna. 



I trust, that, now it is known to exist in this country, 

 many will be on the look-out for it. It has considerable 

 pecuniary value, and can always be exchanged for first-class 

 specimens of other Goleoptera in anypart of the world. 



Aet. XXIX. — Surface and Underground Drainage of 

 Melbourne. By Alexander K. Smith, Esq., C.E., 

 F.R.S.S.A., &c. 



[Read 16th May, 1864.] 



In bringing this subject before the Royal Society, I at 

 once admit that, though the Surface Drainage is of less im- 

 portance to the inhabitants of Melbourne than the Under- 

 ground Sewerage, at the same time the information contained 

 in this paper will materially assist the proper consideration 

 of the best mode to be adopted in carrying out the latter at 

 the least expense. 



The chief objections to the present open drains or chan- 

 nels in the streets are, first : That they become the reci- 

 pients of the sewage from houses, the overflow of cesspools, 

 '<fcc, which they convey through the public streets, and in 

 the largest quantity where the population is most dense, 

 and the traffic greatest, to the prejudice of the comfort and 

 health of the inhabitants. 



The second objection is, that the street channels, especially 

 in Elizabeth and Swanston-streets, are filled to overflowing 



