200 



(Amaltheidoe.') 



SCHLOENBACKIA INPLATA, Sowerby. (Sp.) 



Ammonites inflatus, Sowerby. 1817. Mineral Conchology pi. 178. 

 " restrains, Sowerby. 1817. " pi. 173. 



For the full synonymy of this 

 which is too long to insert here, see 

 Pictet & Campiche's Paleontologie 

 Suisse, " Description des Fossiles du 

 Terrain Cretac6 des Environs de 

 Sainte Croix," Premiere Partie, pages 

 178 and 179. 



Bear Skin Bay, Skidegate Inlet : a well preserved and very charac- 

 teristic cast, which, however, does not shew the septation. 



The specimen measures five inches and three-quarters in its great- 

 est diameter and the maximum width of its umbilicus is two inches 

 and a quarter. Its volutions are somewhat squared, and the outer 

 whorl is ornamented by twenty-one large, widely distant and nodul- 

 ous ribs, which are interrupted or cut through, on the centre of the 

 periphery, by a simple, narrowly rounded and moderately prominent 

 keel. The ribs are mostly simple but occasionally they bifurcate, and 

 on the inner or posterior half of the outer volution they bear four 

 tubercles or nodules on each side of the keeled periphery. On the 

 outer or anterior half of the same volution and especially near the 

 aperture the ribs bear only three tubercles on each side of the peri- 

 phery, the two inner ones being nearly obsolete, while the outer one 

 rises to a height of fully ten millimetres. 



SPHENODISCUS MAUDENSIS. (N. Sp.) 

 Plate 22, figs. 3, 3a, and 36. 



Shell compressed lenticular : periphery minutely and inconspicuously 

 carinated, the keel being simple, entire, very narrowly rounded, and 

 with parallel sides : inner whorls almost entirely concealed : umbilicus 

 small, about one-tenth of the greatest diameter, with nearly vertical 



