28 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 7/ 



Description. — Length of stride unknown. Hindfoot: Length, 115 

 mm., width, 87 mm. ; sole palmate, longer than toes and longer than 

 wide. Three toes, long, directed forward, and apparently without 

 claws. Length of first digit, 37 mm. ; second, 54 mm. ; third, 38 mm. 

 First digit slightly divergent, third protrudes slightly beyond the 

 border of the web. Forefoot: Length, 108 mm., width, 58 mm. 

 Outline of foot semi-rectangular with a distinct blunt, hook-like pro- 

 tuberance on inner posterior angle of heel. There seem to be three 



Fig. 18. — Barytodus palmatus. Type, No. 11,134, U. S. N. M. 

 A, Diagram of forefoot; B, diagram of hindfoot. 7 natural size. 



toes, the inner one being short, the outer two long, slender, and di- 

 rected straight forward, all within the mass of the foot. The median 

 toe, as in the pes, is most deeply impressed. Extremities of the toes 

 show no trace of claws. Length of inner digit, 15 mm.; second, 

 52.5 mm. ; third, 47 mm. At the base of the toes distinct cross ridges 

 indicate the presence of creases. Forefoot 135 mm. in advance of 

 the hindfoot impression. 



Although the specimen selected as the type of this genus and 

 species furnishes rather meager information concerning the tracks, 



