ICHTHYOSATJKID.E. 97 



xx., without either generic or specific name. A smaller 

 view of the skull is given by Buckland in his ' Geology 

 and Mineralogy ' (Bridge water Treatise), pi. x. fig. 1 ; 

 and another "by Owen in his 'Liassic Eeptilia' (Mon. Pal. 

 Soc), pt. iii. pi. xxxi. fig. 2. The entire specimen is 

 described by Owen in the ' Eep. Brit. Assoc' for 1839, 

 p. 113, where it is referred to the present species. The 

 length of the cranial rostrum is rather more than three 

 times the diameter of the orbit. The left sclerotic ring 

 is very perfectly preserved. Purchased. 



R. 1055. Skull of a very large individual much flattened by vertical 

 pressure ; from Lyme-Eegis. The component bones are 

 not clearly shown. The greater part of the skeleton was 

 originally in the Museum, but fell to pieces from the 

 presence of pyrites. Purchased. 



37705. The posterior portion of the cranium of a medium-sized indi- 

 vidual; from Lyme-Eegis. The specimen is vertically 

 crushed ; and the palatal surface has been cut and polished. 

 Saul Collection. Purchased, 1863. 



37705 a. The hinder portion of the right ramus of a mandible, pro- 

 bably belonging to the same individual as the preceding ; 

 from Lyme-Eegis. There is the impression of the shell of 

 a large Ammonites obtusus. Saul Collection. 



R. 1056. An imperfect skull, with the anterior vertebras attached, 

 of a medium-sized individual ; from Lyme-Eegis. The 

 palatal aspect is well preserved, and exhibits the mandi- 

 bular symphysis, the pterygoids, and the hyoids. The 

 teeth are fairly preserved and of the characteristic 

 structure. The inferior aspect of the mandibular sym- 

 physis is wide, with the extremities diverging. 



Purchased, 1853. 



R. 312. The imperfect skull of a medium-sized individual ; from 



Lyme-Eegis. The skull has been subjected to considerable 



crushing and distortion, but many of the teeth are well 



preserved, and show the characteristic carina) of the crowns. 



Ennislcillen Collection. Purchased, 18^2. 



2004*. The left lateral aspect of the middle portion of a crushed and 

 {Fifj.) somewhat broken skull, apparently belonging to an imma- 

 ture individual of this species ; from Lyme-Eegis. Figured 

 by Hawkins in his ' Sea Dragons,' pi. v. ; and noticed by 

 taut ii. n 



