[MArriiEw] NEW GENUS OF BATRACHIAN FOOTPRINTS 101 



first digit may be potentially present in this lobe; on the supposition that 

 the two outer digits of this foot, one on each side are atrophied (as 

 is usually the case with these Batrachian footprints), otherwise we may 

 assume that the first and second digits are contained in the large lobe 

 on the inside of the sole-print. Angle of digits II-IV==80° ; II- 

 111=50°. 



The toes of both feet are round and blunt, and show no trace of 

 claws. 



The track of this creature preserved on the slab in Redpath Mu- 

 seum consists of two casts of the left hind foot and one of the left 

 fore; and of the right side a similar number of casts. It would seem 

 that the fore feet were not always used in walking. 



These tracks are preserved on a fine-grained gray sandstone on 

 which was a thin film of mud; this film preserved minute striœ due 

 to seaweed, etc., swept backward and forward by the sweep of the waves. 

 On the layer on which these markings are preserved are wave markings 

 whose crests were 6 to 8 inches apart. The animal that made the 

 tracks was walking directly up the beach. 



Baropezia abscissa n. sp. PL V., figs. 4a-6. 



On the same slab as that carrying the track of B. Sydnensis, but on 

 a different layer was a print having the following characters: 



Stride of hind feet 5^ inches ( ?) (140 mm.), of fore feet 7^ inches 

 (195 mm.). Straddle not known. 



Jfind foot. Length, 14 inches (45 mm.) ; width, H inches 

 (40 mm.). This footprint has four toes with a spread of toes of 2 

 inches (50 mm.). Sole of the foot large, subtriangular, rather evenly 

 impressed, except at the back where it is abruptly cut off by a line 

 nearly at right angles to the length, at this part the sole is more deeply 

 impressed than at the front and sides. Angle of digits, II.-V.=90°; 

 IV. = 30° Fore foot. Length 1^^ inches (45 mm.) ; width, 

 1^ inches (40 mm.). There were four toes; spread of the toes, 1^ 

 inches (40 mm.) ; three are detached from the sole print, the fourth is 

 imbedded in its margin. Angle of the digits, II.-V.=80° ; IV.-V.=30°. 

 The sole of the foot is somewhat bilobed and is heavily impressed, there 

 is a sinus at the back between the lobes. 



An impression of the wrinkled skin of the sole of both feet h:i< 

 been preserved on the surface of the mud which carries the impression 

 of the footprints. Ko traces of claws were observed. The animal that 

 made the track was walking up the beach with rather long strides. 



Only the cast of the feet on the right side of the track have been 



