6 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 8o 



111 = 13 mm., IV = 16 mm., V = 8 mm. Sole not sufficiently impressed 

 to show its outline ; it seems to be short and broadly rounded behind. 

 Forefoot: Length about 18.5 mm., width from tip of first to tip of 

 fifth digit 17 mm. Five digits which increase in length from first to 

 fourth. Fifth about one-half as long as the fourth, but longer than 

 first. First and fifth directed strongly forward and outward respec- 

 tively from the median digits. Digits I and II terminated by pellets ; III 



Fig. 3. — Hyloidichnus zvhitei, new species. Type. No. 11,692, 

 U. S. N. M. Diag^ram of trackway. About natural size. 



and IV by asymmetrically .bifurcated ends resembling those of the pes 

 in H. bifurcatus. All toes especially slender. The digits have the 

 following measurements: 1 = 6 mm., 11 = 12 mm., 111 = 13 mm., 

 of the manus. Forefoot: Length about 30 mm., width about 30 mm. 

 IV= 13.5 mm., V = 5 mm. The palm failed to leave a distinct impres- 

 sion and thus its size and contour are unknown. 



The general resemblance of the foot plan, the same relative length 

 of toes, and the presence of both 1)ifurcated and pellet toe termina- 

 tions as in the feet of Hyloidichnus bifurcatus Gilmore from this same 



