10 Proceedings of the Royal Society of Victoria. 



more fossils. But, owing to one part of the matrix being 

 very hard, and the other quite soft, great ditficulty was 

 experienced, when after long search specimens were obtained, 

 in preventing their destruction in relieving them sufficiently 

 of the matrix to be recognisable. 



In H, there are, here and there, patches an inch in thick- 

 ness of comminuted fish-scales and bones, covered by a 

 yellowish, pale green film ; and in this film, as also occasion- 

 ally in the lower j)arts of the bed, several fish were found, 

 resembling Cosniol&pides sweeti (McCoy), similar to that 

 found near to and in No. 2. But though so thin, yet so 

 refractory was this film found to be, that even when the dim 

 outline of a fish could be seen, it was often found impossible 

 to clear the film away and get at the fish without destroying it. 



However, by removing a few scores of tons of earth and 

 rock, and after expenditure of much labour, several specimens 

 were secured, containing different parts, and in the aggregate, 

 every part of the fish. It was here that a large heterocercal 

 tail was found, measuring about six inches across, apparently 

 Cosmiolepides siveeti (McCoy). It was also near this horizon 

 that the first larger fish of the same species was met with 

 on December 23rd. 



Large scales were rare in this bed, but one or two conical 

 teeth were found here, and several spines, like those of 

 Gyracanthus obliquus (McCoy). 



P was found to be important, from its containing isolated 

 patches of fossils of a species of very large fish, with large 

 scales so nearly resembling, in some respects, the rare 

 Phyllolepis, as to give one or two geologists an impression 

 in favour of its identity with that little known species, or 

 Olyptolepis. 



These clusters provided considerable material for investiga- 

 tion, including large bony plates, one, eight inches by four, 

 still retaining much of its original appearance and structure ; 

 large opercular plates, one probably the quadrate bone, 

 exhibiting their radiating appearance and slightly corrugated 

 edges ; also one very large mass of bones of the skull of 

 an undetermined fish ; several detached, curved, and conical 

 teeth about an inch lono[ • large bones of the head of Rhizo- 

 dont fish, and large portions of another jaw, with the teeth 

 in position, and showing their internal structure. (These 

 are now in Professor McCoy's hands). 



Two specimens of jaws have since been found in softer 

 stone, which I have succeeded in relieving from their matrix, 



