72 MAEINE EEPTILES Or THE OXFORD CLAT. 



R. 2132 (Leeds Coll. 61). Includes the quadrates (imperfect), some fragments of skull-bones and 

 sclerotic plates, twenty-six precaudal and tliirty-oue caudal vertebral centra, all well 

 preserved and undistorted, the coracoids, imperfect scapuliP, humeri, radius, intermedium, 

 pisiform, and tn enty-three other paddle-bones, a femur, and numerous fragments of ribs. 

 The length of the humerus is 15 em., that of the femur 11 cm. The width of the 

 narrowest part of the shaft in the former is 7 cm., in the latter 3"9 cm. 



B. 2150 (Leeds Coll. 77). Parts of skull, including basioccipital and imperfect quadrates, numerous 

 loose teeth, seventy-five gi-eatly-crushed vertebrje, three caudal neural arches, imperfect 

 coracoid, scapulte, humerus, and twenty-nine paddle-bones. 



The length of the humerus is 14'4 cm., the width of its distal end ]2'2 cm. The 

 length of the scapula is 18'2 cm., the width of its distal expansion 10"8 cm. Some of 

 the teeth are 1"9 cm. long, with a maximum diameter of 1 cm. at about the middle of 

 the root. 



E. 2153. Fused atlas and axis, twelve other precaudal and three caudal vertebras, eight odd 

 paddle-bones. 



The dimensions (in centimetres) of some of the bones are : — 



Atlas and axis : length of centra 3-4 



depth of centra 6'1 



width of centra 6'6 



Largest caudal vertebra : length of centrum 3'7 



depth of centrum 10-2 



widlli of centrum 9'5 



E. 2150 a. Atlas and axis, figured in text-fig. 24, A, B. The length of the combined centra is 

 4'5 cm., the greatest height 8*6 cm., the greatest width 8 cm. 



E. 2152. A basioccipital, atlas and axis (text-fig. 24, E, F), twenty-one other precaudal and fifteen 

 caudal centra. The caudal centra have been strongly compressed longitudinally, so 

 that they are not much more than half their original length, but' are not otherwise 

 distorted. Also the coracoids, left scapula, part of left humerus, and six paddle-bones. 

 The dimensions (in centimetres) of some of these bones are : — 



Basioccipital : greatest length (approx.) 6-6 



width 9-0 



width of condyle 6-1 



Atlas and axis : length 3-6 



width 8-6 



height 8-3 



Coracoid: width (approx.) 21-0 



Scapula : length 21-3 



width of lower expansion 14-6 



E. 2143 (Leeds Coll. 82). The left quadrate, light scapula, the centra of three posterior precaudal 

 and twenty-two anterior caudal vertebrEe of a large individual. The centrum of 

 vertebra which appears to be the first caudal is 10-7 cm. high, 10-7 cm. wide, 4-2 cm. 



