ICHTHYOSAURUS. 



11 



46473. The centrum of a middle dorsal vertebra, apparently speci- 

 fically identical with the preceding : from the Kimeridge 

 Clay of Foxhangers. Cunnington Collection. 



Fig. 7. 



(?) O'phthalmosaurus icenicus.—~Le?t lateral and anterior aspects of a late cervical 

 vertebra ; from the Kiineridge Clay of Wiltshire. \. a, upper; b, lower 

 costal tubercle. 



40407. A right coracoid not improbably belonging to this form ; 

 from the Kimeridge Clay (Upper Jurassic) of Ilminster, 

 Somersetshire. This specimen, which is slightly im- 

 perfect, has a close resemblance to the coracoid of the type 

 specimen figured by Seeley. It apparently indicates, 

 however, that the borders of the latter are incorrectly de- 

 termined, the one marked intercoracoidal being really the 

 glenoid cavity. This specimen differs considerably from 

 the coracoids mentioned under the head of Ichthyosaurus 

 trigonus. Presented by Sir R. Owen, K.C.B. 



47885. A left humerus, indistinguishable from the corresponding 

 bone of the opposite side of the type specimen ; from the 

 Kimeridge (?) Clay in the neighbourhood of Oxford. The 

 dimensions of this specimen are identical with those of 

 the humerus of the type ; the length being 0,170 (6*5 

 inches), and the width of the distal extremity 0,145 

 (5*5 inches). The three distal facets are clearly shown. 

 Presented by the Hon. B. MarsJiam, 1877. 



46474. A crushed right humerus, not improbably belonging to a 

 larger individual of the same species as the preceding 

 specimen; from the Kimeridge (?) Clay of (probably) 

 Wiltshire. The three distal facets are well preserved. 



Cunnington Collection. 



