46 



ICHTHYOPTERYGIA. 



orbit ; in which respect, as in its relatively large teeth, the 

 specimen differs from i". intermedins. 



Presented by the Council of the Birmingham 

 Philosophical Institution. 



R. 317. A distorted skull of somewhat smaller size than No. E. 311, 

 apparently belonging to this species ; from Lyme-Regis. 

 The rostrum has been fractured in several places and 

 has been curved upwards by pressure above the frontals. 

 The right orbit is preserved, but the left has been broken 

 away. The teeth exhibit all the characteristics of those 

 of the present species. EnnisTcillen Collection. 



39492. A laterally crushed skull of smaller dimensions ; from Lyme- 

 Regis. The first three vertebral centra are attached to 

 the occiput. This specimen agrees exactly in size with 

 the skull of I. intermedins, "No. 2103 *, and exhibits the 

 specific character of the much larger teeth very clearly. 



Purchased, 1863. 



R. 1164. A still smaller skull ; from Lyme-Regis. The anterior 

 vertebrae are attached, and the teeth are well preserved. 

 The length of the rostrum slightly exceeds three times the 

 longer diameter of the orbit. The right nares and orbit 

 (with its sclerotic plates) are entire, but the left orbit is 

 broken away. Purchased. 



2002 *. Slab showing the left lateral aspect of the imperfect skull, 

 {Fig.) anterior portion of the vertebral column, and part of the left 

 pectoral girdle of a medium-sized individual apparently be- 

 longing to this species ; probably from Lyme-Regis. 

 Figured by Hawkins in his ' Sea Dragons/ pi. ix. 



Hawkins Collection. 



41159. Slab exhibiting the left lateral aspect of a crushed skull of 

 medium size, probably belonging to the present species ; 

 from Lyme-Regis. The teeth are of the relatively large 

 size characteristic of /. communis. At the occipital region 

 of the skull numerous vertebral centra and bones of the 

 paddles are preserved in the slab. Purchased, 1868. 



33282. A large tooth, wanting the extremity of the crown ; from 

 Lyme-Regis. Purchased, 1858. 



20568. Fragment of rock containing a tooth of similar type ; from 

 the Lower Lias, near Bath. Purchased, 1847. 



