ICHTHYOSATTEID^;. 69 



44175. A medium-sized right femur ; probably from Street. This 

 specimeD, which is represented in woodcut fig. 18 (p. 41), 

 is probably referable to /. intermedins, since it cannot be 

 distinguished from the corresponding bone in the skeletons 

 of that species. No history, 



R. 1130. A rather smaller right femur ; probably from Street. 



No history. 



40123. A left femur, with the tibia and fibula in apposition ; from 

 Lyme-Eegis. The contour of this specimen differs from 

 that of the preceding specimens ; it is probably referable 

 to I. communis. Purchased. 



44175 a. A smaller left femur agreeing in contour with No. 44175 ; 

 probably from Street. No history. 



44175 b. A similar specimen ; probably from Street. No history. 



2093*. A small right femur ; from Street (?). Hawhins Collection. 



2094*. A smaller right femur ; from Lyme-Eegis (?). Same history. 



2092*. A small left femur \ from Lyme-Eegis (?). Same history. 



44175 c. A small left femur; locality unknown. No history. 



B. Longipixnate Group \ 



Orbit relatively large. Teeth with either fluted and cylindrical, or 

 compressed and carinated crowns, and their roots either fluted or 

 invested with a nearly smooth coat of cement; frequently spaced 



Fig. 25. 



Ichthyosaurus tcnuirostris. — Dorsal aspect of the left radius ; from the Lower 

 Lias of Lyme-Eegis. £. u, facet for ulna ; i, do. for intermedium ; 

 r', do. for radiule. 



and often small. Pectoral limb (figs. 27, 32) with the third digit, 

 or that arising from the intermedium, comprising only a single 

 longitudinal row of bones, and consequently only one centralo ; 



1 See note, p. 13. 



