224 THE 3ATH OOLITE PERIOD. CHAP. 



made from a specimen shewing the interior face. Length 4-6 

 inches; breadth of proximal end 1/5. 



Two long, slender, somewhat curved bones in the Oxford collec- 

 tion, which do not correspond to any other of the long bones, may 

 probably be bones of the fore-arm radius and ulna of dif- 

 ferent individuals. Length of one 4*5 inches ; of the other 5*0. 

 Not being able to develope the condyles, so as to be quite satisfied 

 of their true character, only dotted lines are added in the Diagram 

 to indicate their supposed place in the skeleton. Their distal 

 extremities are enlarged, so as, in unison, to make a complicated 

 articulation with the carpus. 



No carpal bones have been discovered. 



Only one example of the metacarpal of the wing-finger is known. 

 It is in the possession of Dr. Wright (m. fig. 2) . This is a short 

 strong bone, widest at the proximal end, and furnished with a 

 double condyle at the distal end. Length two inches. 



2 



Diagram LXXIV. Proximal condyle of first phalanx of wing-finger of Rhainpho- 



rhynchus Bucklandi, in three aspects. Scale size of nature. 



a. and &. mark corresponding points in three views. 



Next follows the first phalanx of the wing-finger (p'\ bent and 

 angular in the proximal part, thence nearly straight and flattened. 

 The proximal end articulates with the condyles of the metacarpal, 

 something after the manner of the junction of ulna and humerus ; 

 the distal end is expanded and obliquely truncated. Length 5 

 inches ; smallest diameter of the shaft 0*3. 



The roximal condyle, which appears clear in one specimen at 

 Oxford, is represented in Diagram LXXIV. 



The second wing-finger (p") attains in one example a length of 

 7*75 inches; and, somewhat widened by compression, a breadth of 



