122 Prof. II. G. Seeley on some Vertehrce and 



position, like tlie metatarsal in the foot of a crocodile, resting 

 upon the second. That bone is triangular at the extremity, 

 being inclined and flattened internally, flattened at the base, 

 short on the outer side, which is more vertical and grooved, 

 'i lie third appears to have been the stoutest; it has the 

 proximal end subquadrate, somewhat convex, and each of the 

 lateral margins is concave, except the external margin. The 

 fourth bone is much more compressed from side to sidej 

 its articular surface is somewhat oblique and rounded. The 

 fifth bone is very small. All the bones after the first show 

 ligament-grooves on the underside. There is-on the whole a 

 steady decrease in size from tlu^. flrst t() the fifth, if the bone* 

 are rightly identified ; but the remain.- are very imperfect and 

 chiefly interesting from thrir reputed association. 



Tlie Fhalanges. 



These appear to belong to two limbs, since there are not 

 fewer than six terminal claw-phalanges, and probably frag- 

 ments of eight are preserved. The digital phalanges 

 preserved may ])robably be referred to five digits, in which 

 case there would be no claw-phalange preserved for the fifth 

 digit ; and three claw-phalanges may possibly be referred to 

 the other limb. As arranged, the bones in the first digit are 

 stoutest, three in number, in the second digit four in number, 

 in the third five, fourth four, and in the fifth two at least are 

 preserved. The phalangeal bones are stout, of moderate 

 length, not depressed, but with rather a tendency towards 

 lateral compression. 



In the first digit the first phalange is 1^^ inch long, with 

 the pulley-shaped distal end \ inch wide, and the bone almost 

 as deep. A ligament-pit is developed on each side of the 

 distal pulley. The bone is flattened. 



The claw-phalange is imperfect; it was about f inch deep 

 at the proximal end, where it is less than ^ inch wide. The 

 length, as preserved, is less than Ij inch, and was probably 

 not less than li inch. The phalange is compressed from side 

 to side. The lateral surface is divided into two nearly equal 

 parts by a longitudinal groove on eacli side, above which the 

 surface is convexly rounded, and about half as wide as the 

 inferior portion, which is somewhat flattened on the underside. 

 In harmony with this form the proximal articular surface is 

 somewhat triangular ; the bone is convex both below and 

 above it. 



In the second phalange the bones are somewhat smaller, 

 rather more depressed, especially the last phalange. The 



