Catalogue of the fossil Reptilia and Amphibia in the British Museum (Natural history) ..By Richard Lydekker .. . aun/s. 2 Loc. cit. 206 SATJROPTERYGIA. ever, may partly be accounted for by the crushing to which thetype specimen has evidently been subject, and partly to individualvariations, such as are shown in specimens in the collection ofMr. Leeds. The type humerus has a length of 0,406 (16 inches) anda 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 collectio
Catalogue of the fossil Reptilia and Amphibia in the British Museum (Natural history) ..By Richard Lydekker .. . aun/s. 2 Loc. cit. 206 SATJROPTERYGIA. ever, may partly be accounted for by the crushing to which thetype specimen has evidently been subject, and partly to individualvariations, such as are shown in specimens in the collection ofMr. Leeds. The type humerus has a length of 0,406 (16 inches) anda 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 ofMr. Leeds (No. 32) has a length of 0,370 (15-5 inches) and adistal diameter of 0,292 (11*5 inches). In one of the specimens inthe same collection the elongated ulnare of fig. 66 is divided intotwo separate bones. This form, so far as is known at present, can only be distinguishedfrom the following by its superior size, and it remains to be provedthat the two do not pass into one another. The dorsals figured byPhillips as C. oosoniensis agree with those of the present form. Hob. Europe (England). Kg. Cimoliosclurus eurymerus.—~Ldt lateral and anterior aspects of a cervical verte-bra ; from the Oxford Clay of Peterborough. £. , prezygapophysis;, postzygapophysis ; co, rib. R. 1284. Cast of a cervical vertebra. The original (fig. 67) belongsto a nearly entire skeleton (No. 31) from the Oxford Clayof Peterborough, Northamptonshire, in the collection of PLESIOSATJRID^. 207 A. X. Leeds, Esq., of Eyebury, near that town, of whichthe pectoral limb is shown in fig. 06. The dimensions ofthe centrum are :—length 0,037 (1*45 inches), height 0,0-45(1-75 inches), width 0,061 (2*4 inches); the height fromthe base of the neural canal to the summit of the neuralspine being 0,073 (2-85 inches). The relatively shortneural spine is in marked contrast to that of the cervicalof C. richardsoni No. R. 1283 (p. 2-12). Made in the Museum, 1888. 28709. The centrum of an immature cer
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