102 Geological Society. 



passing prey, would lead to such strenuous action of the fore limbs 

 as would account for the increased size and power of those organs 

 in the Neozoic species. The author concluded with some remarks 

 \ipon the influence of the above considerations upon our views as to 

 the generic divisions of Crocodiles. 



3. " Notes on a Crocodilian Jaw from the Coral Rag of Wey- 

 mouth." By E. Tulley Newton, Esq., F.G.S., of H.M. Geological 

 Survey. 



In this paper the author described what he believes to be a frag- 

 ment of the lower jaw of a Crocodilian, obtained from a greyish- 

 brown sandy grit, probably belonging to bed 3 of Messrs. Blake and 

 Hudleston's Sandford-Castle section. The specimen measures about 

 11 inches long, and includes portions of both rami. The right 

 ramus contains the remains of 12 alveoli, some of which, notably 

 the first, second, fourth, and fifth, contain fragments of teeth, which 

 appear to have been directed very obliyuely outwards and forwards. 

 The portion of the left ramus preserved gives indications of 14 or 15 

 teeth. An impressioii of a tooth in the matrix gives a length of 1| 

 inch for the crown of the larger teeth ; their section was nearly round; 

 but a young unused tooth is slightly compressed, with a distinct 

 ridge running down each side and two smaller ridges on the inner 

 surface. The general surface of the crown was covered with fine 

 but distinct longitudinal ridges. The median area has a spindle- 

 shaped portion separated from the rest by deep grooves, the surface 

 of which is longitudinally grooved ; and this character, according to 

 the author, does not occur in either of the genera mentioned by M. 

 Deslongchamps , 



4. " Note on Two Skulls from the Wealden and Purbeck Forma- 

 tions indicating a new Subgroup of Crocodilia." By J. W. Hulke, 

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



The author described a Crocodilian skull obtained by Mr. H. 

 Willett, F.G.S., from the Hastings Sands near Cuckfield, in Sussex, 

 and identified by that gentleman with Gomopholis crassidens, Owen, 

 and another from the Purbeeks near Swanage, in the collection of 

 the British Museum, which he further compared with a third speci- 

 men from Brook, in the Itsle of Wight. He had little doubt that 

 Mr. Willett's specimen had been correctly identified, and thought 

 it and the Brook skull were probably specifically identical. All 

 these skuUs belong to a group intermediate between the Mesosuchia 

 and Eusuchia of Prof. Huxley. In the constitution and position 

 of the palato-nares they most nearly resemble Metriorhi/nchus Blain- 

 villii, Desk, among the Mesosuchia. The general contour of the 

 skull resembles that prevalent in the typical Crocodiles, such as 

 Grocodilas rlwmhifa- . In the arrest of the nasal bones short of 

 the anterior nares thev rather resemble Gavicdin, and stiU more the 



