Tl PEOCEEDINGS, APEIL. 



wonderfully fine, and interesting addition to our ynollusoan fauna. It 

 was found attached to the rocks in the shallow margin of the lake, and 

 although apparently numerous at this particular locality, only a limited 

 number of examples were collected. Mr. Petterd in his paper said that 

 this species is not only the finest form of the genus discovered in this 

 island, but is also by far the finest in the world. The second form was 

 a flew shell belonging to the genus Gundlachia, which the author had 

 named in honour of its discoverer, G. Beddomei, having been found by 

 Lieut. Beddome in a fresh water pool ofif the Brown's River-road. 

 Mr. Petterd states that this species differs in shape, colour, and is of a 

 much larger size than the only other form known here, G. PetlercU, 

 Johnston. The papers were accompanied with drawings of both the 

 shells. 



Some notes on the Tasmanian "Butter Fish" ( Chilodactylus Mulhalli, 

 Macleay) was read by Mr. SavilleKent, Inspector of Fisheries. The 

 paper was accompanied with a stuffed specimen and a plaster cast of 

 the fish. Mr. Kent, in his notes, stated that, in communicating this 

 note upon the butter fish (C. Midhalli), he would take the opportunity 

 of recording his opinion that ihe tish figured and described by Macleay 

 in the proceedings of the Linnsean Society of New South Wales, p. 440., 

 Pt. XXII. , under the title of Psilocranium Coxri, must be regarded as 

 identical with this species. With the form given in the illustration 

 quoted, and in all more important details of its diagnosis it essentially 

 agrees. The only feature upon which he had, as far as he could 

 perceive its claims to a separate generic, and specific titles have been 

 found in the somewhat smoother surface of the head as compared 

 with the ordinary members of Chilodactylus. Mr. Kent went on to say 

 that the more cylindrical contour of the body, which is quoted by 

 Macleay as substantially its claim to separate generic distinction, could 

 scarcely be invested with so important a significance, more especially as 

 admitted by Macleay in his original description of this type. Mr. Kent 

 said that he might add that Mr. Morton, who is personally familiar 

 with the typical examples of C. Mulhalli and Psilocranium Goxii 

 preserved in the Sydney Museum, had experienced equal difficulty 

 with himself in detecting any essential points of distinction between 

 these respective types. 



Mr. R. M. Johnston quite agreed with Mr. Kent as to the Butter Fish 

 being tlie same as that described by Macleay, He had since had the 

 pleasure of capturing several, and it was not so rare as was supposed, for 

 the fishermen frequently caught it though they did not bring it to 

 market, regarding it as what they called "mullock." The fish being 

 very sensitive to light changed its colour in different localities, the colours 

 being deeper in deep water. This was the case with the trumpeter, 

 from the colour of which it was possible to affirm what part of the coast 

 it had come from. In the boat's well the fish frequently change their 

 colour in a trip from Maria Island to Hobart. He desired to compliment 

 Mr. Kent upon the accurate and perfect manner in which he had 

 produced his cast. 



Mr. A. Morton said he felt convinced after a personal examination 

 of the Sydney specimens, that Macleay 's Psilocranium Goxii and 

 Chilodacti/lus Mulhcdli were the same and thought that both would 

 prove to be synonyms of Richardson's G. nigricans. 



The Curator of the Museum, Mr. A. Morton, contributed a few notes. 

 on three specimens of fish hitherto unrecorded as being found in 

 Tasmanian wateris, belonging to the family Kurtidce Genus Pem2:)hcris. 

 The specimens before the meeting had been sent to the Museum from 

 George's Bay, by Mr. W. L. Boyes, and proved to be Pemphens 

 macrolepis, Macleay. 



