110 ICHTHYOPTERYGIA. 



43166. The basisphenoid of a large individual; from Lyme-Regis. 

 The Eustachian canal is well shown. 



Wetherell Collection. Purchased, 1871. 



2062*. The basioccipita] and basisphenoid of a smaller individual ; 

 from Lyme-Regis. A vertebral centrum is attached to 

 this specimen. HaivMns Collection. 



R. 1204. A smaller basioccipital and basisphenoid; from Lyme- 

 Regis. Presented by Sir P. de Malpas Grey Egerton, Bart. 



R. 1204 a. A small basioccipital, with three associated cervical 

 vertebrae. Figured by Egerton in the ' Trans Geol. Soc' 

 ser. 2, vol. v. pi. xiv. fig. 7. Same history. 



R. 1508. A basisphenoid agreeing in size with the corresponding 

 bone of the preceding specimen ; from Lyme-Regis. 



No 



R. 266. A smaller basisphenoid ; from Lyme-Regis. 



Egerton Collection. 



28328. The imperfect right quadrate of a very large form ; from 

 Lyme-Regis. Purchased, 1853. 



28507. Slab showing the crushed right quadrate of a smaller form ; 

 from Lyme-Regis. Dixon Collection. Purchased, 1851. 



32396. The crushed left quadrate of a comparatively large in- 

 dividual; from Lyme-Regis. Purchased. About 1857. 



2147*. Two specimens of the articular bone of the mandible of a 

 relatively large form ; from Lyme-Regis. 



Hawkins Collection. 



42296. Slab showing the ventral aspect of the imperfect mandible 

 of a comparatively small form ; from Lyme-Regis. The 

 teeth are small and slender. Purchased, 1870. 



40110. The anchylosed centra of the atlas and axis vertebras of a 

 (Fig.) comparatively large form; from Lyme-Regis. Figured 



by Egerton in the ' Trans. Geol. Soc' ser. 2, vol. v. pi. xiv. 



figs. 1-2. The intercentrum is wanting. Purchased. 



R. 1205. A considerably smaller specimen of the same compound 

 (Fig.) element; from Lyme-Regis. Figured by Egerton, op. cit. 

 pi. xiv. fig. 12. The intercentrum is present and the 

 specimen closely accords with the preceding in contour. 



Presented by Sir P. de Malpas Grey Egerton, Bart. 



