APRACTOCLEIDUS TERETIPES. 629 



EXPLANATION OF PLATE. 



Apradocleidus teretipes, gen. et sp. nov. 



Fig. 1. Shoulder-girdle from below (about ^ nat. size). 



„ 2. Pelvis from above (about \ nat. size).* 



„ 3. Atlas and axis and other thirteen anterior cervical vertebrae, from the left (about i nat. size). 



,, 4. Outer side of left fore paddle (about \ nat. size). 



,, 5. Outer side of left femur (about \ nat. size). 



REFERENCES. 

 Andrews, C. W. — 



1909. "On some new Plesiosauria from the Oxford Clay of Peterborough," Ann. and Mag. Nat. Hist. 



[8], vol. iv, pp. 418-429. 



1910. B.M. Cat., Marine Reptiles of the Oxford Clay, part i. 



1915. "Note on a Mounted Skeleton of Ophthalmosaurus iccnicus, Seeley," Geol. Mag. [vi], vol. ii,. 

 p. 145. 

 Seeley, H. G. — 



1874. "On some Generic Modifications of the Plesiosaurian Pectoral Arch," Quart. Journ. Geol. Soc. f 

 vol. xxx, pp. 436-449. 



1892. " The Shoulder-Girdle and Clavicular Arch in Sauropterygia," Troc. Boy. Soc, vol. Ii, pp. 119-151. 

 Smellie, W. R. — 



1915. " On a new Plesiosaur from the Oxford Clay," Geol. Mag. [vi], vol. ii, pp. 341-343. 

 Williston, S. W. — 



1914. Water Reptiles of the Past and Present, pp. 80 and 91. 



* The right ilium is a plaster model made by Mr Kinghorn, the Hunterian Museum. 



TRANS. ROY. SOC. EDIN., VOL. LI, PART III (NO. 19). 



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