ICHTHYOSAURI D.E. 45 



killen), where it is referred to the present species. In 

 the accompanying figure the orbit is restored 1 . 



EnnisJcillen Collection. Purchased, 1882. 



Ichthyosaurus communis. — Left lateral aspect of the skull; from the 

 Lower Lias of Lyme-Regis. About 9 . 



25273. The rostrum of a skull agreeing closely in size with 

 {Fig.) Xo. Pt. 311 ; from Lyme-liegis. The teeth are in beautiful 

 preservation, one of them being represented in fig. 19. 



Purchased, 1850. 



R. 1163. The anterior extremity of a similar rostrum ; from Lymc- 

 Kegis. Thirteen teeth remain in the mandible, in which 

 the splenial extends to the extremity of the symphysis. 



No history, 



41379. The anterior portion of a mandible agreeing very closely 

 with that of jSTo. E. 311 : from Lyme-Regis. 



Purchased, 1869. 



14593. Cast of an entire skull apparently belonging to this species. 

 The original was obtained from the Lower Lias of Barrow- 

 on-Soar, Leicestershire, and is preserved in the Museum of 

 the Philosophical Institution at Birmingham. It is noticed 

 by Owen in the ' Hep. Brit. Assoc' for 1839, p. 110, where 

 it is referred to the present species. This specimen has 

 suffered but little from crushing; and exhibits very clearly 

 the supratemporal fossae. The length of the rostrum con- 

 siderably exceeds three times the longer diameter of the 



1 The skull, No. 14, mentioned on page 138 of Seeley's ' Index to Avea &.c. 

 in Cambridge Museum ' (1869), ia vcrv similar to the present specimen. 



