New Genera of Batrachian Footprints. 103 



"Woodworth, but in place of four toes on the fore foot, 

 there are only three. It differs from Asperipes in having 

 a small sole to the hind foot, and in wanting a long heel 

 in the print of the fore foot ; also in the length and slen- 

 derness of the toes of both feet. 



The print of the fore foot was distinct from that of the 

 hind, and placed some distance behind it, some times half 

 way to the next posterior impression of the hind foot. 



These footprints appear to have been made by active 

 animals having comparatively light bodies and long 

 slender toes. 



Cursipes Dawsoni n. sp. (PI. Figs. 4a and b), is the type 

 of this genus, and there was one other species. 



The name is in allusion to the supposed rapid move- 

 ment of the animal. 



In distinguishing the fore and hind foot of this genus, 

 much the same criteria are available as in the preceding 

 genus. To mention first the size of the foot. Although 

 in the typical species there is a continuous series of the 

 three-toed impressions, alternating with those of the foot- 

 mark showing five toes, they are invariably considerably 

 smaller than the latter, and more lightly impressed. In 

 the other species assigned to this genus, the impression of 

 the fore foot is so light that it may be entirely overlooked. 

 Often only the tips of the toes touched the ground, and 

 that very lightly ; but if one were to observe the arrange- 

 ment of these little pits, they would be seen to correspond 

 to that of the three (or sometimes only two of the three) 

 toes in the type species ; and in the prints of the tips of 

 the toes of the fore foot in species of Asperipes. 



As in this latter genus, we must regard the foot which 

 gives a three-toed impression as the fore foot ; otherwise 

 the weight of the body must have rested chiefly on the 

 fore feet, which seems to be unnatural. 



Barillopus n. gen. 

 Under the genus Baropus, Marsh, the writer, last year? 



