286 Reports and Proceedings — 



Oolite under the terra Toarcian upon palaaontological grounds. In 

 the present paper he furnishes further statements in support of this 

 view. 



2. " On some new Mammals from the Eed and Norwich Crags." 

 By E. T, Newton, Esq., F.G.S. 



This paper contains descriptions of mammalian remains from the 

 English Pliocene belonging to eight species, nearly all being new to 

 the Crags, and four of them new to science. A remarkable low- 

 crowned, but broad, lower carnassial tooth from the Norwich Crag 

 of Bramerton is referred to the genus Lutra, and named specifically 

 L. Beevei. All the other specimens noticed below are from the 

 nodule-bed at the base of the Suffolk Red Crag, and the first four 

 of them are in the possession of Mr. E. C. Moor, of Great Bealings. 

 A right ramus of a lutrine lower jaw, differing from the common 

 Otter in having the hinder fangs of the premolars much larger than 

 the front ones, and agreeing in this particular with the Lutra clubia 

 of De Blainville, is referred to the latter species. A humerus of a 

 Seal, most nearly resembling that of Phoca mtulina, but of smaller 

 size and more slender proportions, is called Phoca Maori. Another 

 Seal's humerus, having a peculiarly triangular shaft, is thought to 

 belong to the Pliocanella minor of Van Beneden. A maxilla with 

 three teeth, evidently belonging to the genus Trogontherium, but of 

 smaller size than the Trogontherium Cuvieri, is believed to represent 

 another species, and is named T. minor. The ziphioid rostrum in 

 the Ipswich Museum, which received from the Rev. H. Canham the 

 MS. name of Mesoplodon Floweri, is for the first time described ; and 

 another rostrum in the Museum of Practical Geology, characterized 

 by being very short and with a deep boat-like anterior extremity, is 

 named Mesoplodon scaphoides. The peculiar species Aihirus anglicus, 

 hitherto known only by a piece of a lower jaw with a carnassial 

 tooth, is now further illustrated by a fine upper molar recently 

 presented to the Museum of Practical Geology. 



3. " On Burrows and Tracks of Invertebrate Animals in Palaeozoic 

 Rocks, and other Markings." By Sir J. William Dawson, LL.D., 

 F.R.S., F.G.S. 



This paper, which is illustrated by photographs and drawings, 

 indicates some new facts in connection with the markings pro- 

 duced by the burrows and tracks of animals and by other causes. 

 Jtusichnites and Cruziana are regarded, like Climactichnites and 

 Protichnites, as representing probable burrows of Crustaceans and 

 Chaetopod worms. Scolithus canadensis is shown to be a cylindrical 

 burrow, with accumulations of earthy castings at its mouth. The 

 relation of these burrows to the forms knows as Scotolithus, Astero- 

 phycus, Monocraterion, and Astropolithon is pointed out. 



Under the new generic name of Sabellarites the author describes 

 certain tubes, composed of shelly and other fragments cemented by 

 organic matter, found in the Trenton Black-river Limestone. They 

 resemble the burrows or tubes formerly described by the author 

 from the Hastings and Quebec Groups, and appear to be the tubes 



