502 



RICHARD SWANN LULL ON 



This form differs from .1. sr-amhus in the greater divarication of the lateral digits 



and the greater relative stoutness of the foot in pro- 

 portion to its length, and especially in the relatively 

 shorter heel. An exceedingly interesting series of 

 tracks is shown on slab no. \^, of the Hitchcock cabi- 

 net, containing at least fifty impressions, all but four 

 being of this species. Here the animal is shown 

 walking, then stopping and sitting down, then I'ising 

 and going on again. No caudal trace is exhibited 

 until just before stopping, showing that ordinarih' 

 the tail was used as a counterpoise, only reaching 

 the ground while the creature assumed the quadru- 

 pedal posture or just Ijefore. The impression of the 

 ischial callosity is also to be seen. The difference in 

 the character of the foot impression in the walking 

 and sitting form is well shown and is brought out in 

 figures 19 and 20, wliich are drawn from the slab in 

 question. 



The type specimen is no. -^- mentioned above, 

 reddish sandstone from Turner's Falls, Massachu- 

 setts ; figured in E. 



Fig. 20. Anoinoeims intermedius E. Hitch- 

 cock. Traclcs of the right manas and pes of a 

 seated individual, probably identical with the 

 one which made the track shown in figure 19. 

 X 1. From the type slab, no. «., of the Hitch- 

 cock cabinet. The skeleton restoration shows 

 the metatarsals and phalanges. 



Hitchcock 



15, fig. i: 



from 



:'65, pi. 



Figure 

 slabs 



,'\ ///. 



H and 



21 is 

 nos. 



The latter speci- 

 men C. H. Hitch- 

 cock recognizes as being Apatichtius hoJyokensis {vide 

 supra) . 



fig. 



Anomoepus curvatus E. Hitchcock. 



Anomocpiis curcatua E. Hitchcock, '65, p. 

 2 ; pi. 15, fig. 2. 



pi. 1, 



Fig. i\. Anomoepus intermedms K. 

 Hitchcock. Impression of right pe.s. X .1. 

 A composite drawing from nos. w and ^f, 

 of the Hitchcock cabinet, 



Specific characters. Pes : divarication of digits I and II, 40° ; of IT and III, 2-3.5° ; of 

 ill and IV, .36.5°. Length of digit II, .050 m. ; of III, .061 m. ; of IV, exclusive of sole 

 pad, .055 m. Length of foot, .098 m. The heel and manus are unknown. Length of 

 step, .230 to .250 m. 



