FOSSIL FOOTPRINTS OF THE JITRA-TRIAS. 



505 



middle toe and also by a slender tail. Like Grallator cuneatus. Shorter stride and 

 length of step would seem to ally it with Anomoepus." These reasons, as given by 

 Hitchcock, are valid as far as they go, but further study seems necessary to decide with- 

 out question the true position of this form. 



The type specimen is no. 105 of the Mt. Holyoke museum. 



Anomoepus isodactylus C. 11. Hitchcock. 

 Anomoepus isodactylus C. H. Hitchcock, '89b, pp- 118, 124. 



Speeific characters. Pes: divarication of cUgits I and II, 50°; of II and HI, 29°; of 

 III and IV 30°. Length of hallux, .043 m.; of digit H, .043 m.; of HI, .072 m.; of IV, 

 including the sole pad, .101 m. Average width of phalanges, .025 m. Length of foot, 



115 m- including the heel, .230 m. The basal pads of the hallux, as well as the claw, 

 impress, showing that toe to be incumbent. Manns: unknown. Length of step, .205 m. 

 This species is based upon specimens in the Mt. Holyoke museum, but of the speci- 

 mens labeled A. isodactylus, one is clearly A. intermedins, while, the others, no. 128 and 

 its counterpart no. 142, are the ones used for this 



description, the figure (fig. 25) being drawn from 



the former. Another slab in the northeast corner 



of the museum, and bearing no number, has the 



impression of the sitting animal of this species. 



This form resembles somewhat superficially A. 



intermedius, but is a heavier, broader toed animal, 



with a foot very short in proportion to its width. 



Type specimens, nos. 128 and 142, of the Mt. 



Holyoke museum, from South Hadley, Massachu- 

 setts. 



.'■\ ///, 



Genus Fulicopus E. Hitchcock. (Fulica foot.) 

 Fidicopus E. Hitchcock, '45b, p. 23. 



Fig. 25. Anomoepus isodactylus C. H. Hitch- 

 cock. Imprint of tlie right pes. X i. From 

 Anomoepus E. Hitchcock, '58, p. 56 (in part) . the type specimen, no. 120, of the Mt. Holyoke 



college collection. 



Generic characters. The members of this genus 

 are distinguished from Anomoepus by the greater size, especially of the pes, less acumi- 

 nate claws, and the absence of the sole pad in addition to the four normally belonging to 

 digit IV. An ischial callosity may also be present. The track of the pes shows less 

 divarication of the toes than does that of Anomoepus and in general appearance resembles 



