1 899-] Osborn, Carnivorous and Herbivorous Dinosaurs. 1 63 



The larger of the limbs (No. 290) is the more perfect, except 

 that it lacks the proximal portion of Mt. I. The smaller (No. 

 324) has the calcaneum and astragalus restored, and a femur 

 (No. 275), which was found at some little distance, is arbitrarily 

 placed with it. Except for differences in size, due to age or sex, 

 the limbs are practically identical in character. 



Measurements. 



No. 2QC). No. 324. 



Length of femur 985 



" tibia 810 6g8 



" fibula 764 665 



metatarsal II 375 315 



No. 275. 

 gio 



" in 425 



IV 360 



Width of ankle joint 



Calcaneum and astragalus 241 



Total height of limb 2182 



352 

 330 



Of greatest interest is the first digit, 

 or hallux, not before described. Prox- 

 imally (Fig. 4 a) its metatarsal fits in a 

 shallow groove of the upper portion of 

 the large metatarsal II. The shaft is 

 entirely interrupted or composed of 

 cartilage in the middle portion. Dis- 

 tally it is fitted to the rounded posterior 

 shaft of Mt. II, demonstrating that this 

 digit was directed inwards like the 

 small hallux of Apteryx ( Fig. 5). It 

 possesses, however, a complete and 

 functional phalanx and claw, which un- 

 doubtedly were of service in grasping. 



The digits II, III, IV, with phalanges 

 numbering 3, 4, and 5, respectively, are 

 well shown in the photographs (Figs. 4, 

 4 a). The lower row of tarsals is repre- 

 sented by two bony elements only, probably tarsalia 3 and 4. 



The upper tarsals, astragalus and calcaneum are closely con- 

 joined if not actually co-ossified. 



Fig. 2. Carnivorous Dinosaur, 

 No. 290. Same Limb as Fig. i, C, 

 showing proportions to human 

 stature (Dr. J. L. W.). ^'g nut. size. 



