206 



SATJROPTERYGIA. 



ever, may partly be accounted for by the crushing to which the 

 type specimen has evidently been subject, and partly to individual 

 variations, such as are shown in specimens in the collection of 

 Mr. Leeds. The type humerus has a length of 0,406 (16 inches) and 

 a distal diameter of 0,287 (11*3 inches) : the corresponding dimen- 

 sions in the specimen represented in fig. 66 being 0,354 (14 inches) 

 and 0,272 (10*7 inches). Another humerus in the collection of 

 Mr. Leeds (No. 32) has a length of 0,370 (15-5 inches) and a 

 distal diameter of 0,292 (11*5 inches). In one of the specimens in 

 the same collection the elongated ulnare of fig. 66 is divided into 

 two separate bones. 



This form, so far as is known at present, can only be distinguished 

 from the following by its superior size, and it remains to be proved 

 that the two do not pass into one another. The dorsals figured by 

 Phillips as C. oosoniensis agree with those of the present form. 



Hob. Europe (England). 



Kg. 67. 



Cimoliosclurus eurymerus.—~Ldt lateral and anterior aspects of a cervical verte- 

 bra ; from the Oxford Clay of Peterborough. £. pr.z, prezygapophysis ; 

 pt.z, postzygapophysis ; co, rib. 



R. 1284. Cast of a cervical vertebra. The original (fig. 67) belongs 

 to a nearly entire skeleton (No. 31) from the Oxford Clay 

 of Peterborough, Northamptonshire, in the collection of 



