THE RED AND NORWICH CRAGS. 453 



agrees in size with Ailurus angllcas, we can scarcely do otherwise 

 than associate it with the latter species. 



A portion of a lower jaw, which, like the type, is in the Reed 

 Collection, York Museum, and from the Red Crag near Woodbridge, 

 is also referred to A. anglicus. The high position of the articular 

 condyle, the deeply curved lower margin, and the high, and large 

 coronoid process agree with A. fulgens ; while the flattened alveolus 

 for the hinder fang of the last molar is like what is seen in the 

 type specimen of A. amjlicus. 



EXPLANATION OF PLATK XVIII. 



Fig. 1 a. Liitra diihia, Blaiiiv. Right ramus of lower jaw : natural size. 

 From the nodule-bed of the Red Crag near Woodbridge. In the 

 collection of Mr. E. C. Moor, of Bealings. 

 1 6. Same, seen from above. 



1 c. Carnassial tooth, seen from above, and enlarged. 



2 a. Lutra Reevci, sp. nov. Right lower, carnassial tooth, seen from 



above : natural size. From the Norwich Crag of Bramerton. In 

 the collection of Mr. Jaines Reeve, of Norwich. 



2 h. Same, seen from outer side. 

 2(?. Same, seen from before. 



'da. PJioca Moci'l, sp. nov. Left humerus, front view: natural size. 

 From the same horizon and collection as fig. ] . 



3 b. Same, side view. 



4 a. PhoaaneUa niinor. Van Beneden. Left humerus, IVont view : natural 



size. Same collection and horizon as fig. 1, 



4 h. Same, side view. 



5 a. Trogontherium minus, sp. nov. Right maxilla, outer surface : natural 



size. Same horizon and collection as fig. L 



5 h. Same, grinding- surface of teeth. 



6 a. Trogonfherhmi nanus, sp. nov. Lower incisor : natural size. From 



the Norwich Crag, Sizewell Gap, near Southwold ; in the Museum 

 of the Geological Society. Provisionally referred to this species. 



6 h. Same, transverse section. 



la. Mesoplodoii Jloris, sp. nov. Rostrum, seen from above: one third of 

 the natural size. From the Red Crag of Trimley, Canham Collection, 

 Ipswich Museum. 



7 h. Same, seen from below. 



7 c. Same, right side view. 



A, B, C. Transverse sections at points indicated in fig. 7 a. 

 8a. 3fcsop/odon scaphoidcs, sp. nov. Rostrum, seen from above: one 

 third of the natural size. From the nodule-bed of the Red Crag 

 near Woodbridge. In the Museum of Practical Geology. 



8 b. Same, right side view. 



i3«. Ailurus augHcus, Dawkins. Left upper, first true molar: natural size. 

 From the nodule-bed of the Red Crag near Boy ton. Presented to 

 the Museum of Practical Geology by Mr. I'. H. Browne. 



9 b. Same, outer view. 



10a. Ailurus fidgcns, F. Cuv. (Recent.) Left upper, first true molar: 

 natural size. From specimen in possession of Mr. R. Lydckker. 

 For comparison with A. anglicus. 



10 b. Same, outer view. 



Q. J. G. S. No. 183. 



