1873.] 223 [Cope 



by the latter is much shallower, and not bordered above by a recurved 

 hook of the margin 



Humerus. (1) It is relatively smaller in H. eximius. (2) The internal 

 bicipital ridge of T. roulini is wanting. 1 3 I The external condyle is much 

 shorter, whence its border is nearer its trochlear rib. The radius has a 

 narrower head (1), the external articular plane being shortened. ^2) The 

 shaft is wider with a more acute longitudinal lateral ridge medially, and 

 more rounded distal end. The ulna is (1) absolutely nearly as long as in 

 T. roulini, being thus relatively longer. (2) It has three weak longitu- 

 dinal ridges on a convex outer face ; in T. roulini the external face is 

 divided by a very prominent longitudinal angle from the radial cotylus, 

 which spreads distally, sending one angle to the upper and another to the 

 lower base of the distal epiphysis. 



Carpus. This part is (1) absolutely and relatively smaller than in 7'. 

 roulini. (2) The pisiform is more cyliudroid distally. (3) The scaphoid 

 is more produced backwards on the inner side ; the excavation of the 

 inner side is more continued as a concavity of the outer side of the front. 

 (3) The unciform has an acute tuberosity behind ; in T. roulini it is short, 

 vertical and obtuse. (4) The trapezoides has a shorter, wider, and more 

 swollen external face. (5) The pisiform is sma.l and convex instead of 

 being larger and flat. 



The metacarpals (1) are absolutely and relatively smaller. (2) The 

 inner (II) has a more oblique phalangeal articulation, which is short 

 above and with the keel prolonged upwards instead of being as in T. 

 rpplini, distal only. 



The pelvis is distinguished by the much longer plate of the ilium, whose 

 extremity constitutes the crest. (1) The crest is also shorter, and more 

 anterior, in T. roulini, this plate does not so much exceed the sacral 

 plate. (2) The pubes and ilia are not so horizontal, but meet at nearly a 

 right angle, and (3) the ischiopubic common suture is considerably 

 longer. (4) The obturator foramen is a more elongate oval. 



The femur is very similar to that of T. roulini, being no smaller in 

 relative size. (1) The great trochanter is wider fore and aft, and with 

 margin more continued on the anterior aspect of the extremity of the 

 shaft. (2) The great trochanter is nearer the middle of the length. 

 (3) The condyle surfaces are continuous with the rotular, not isolated as 

 in T. roulini. The latter also (4) lacks the two fossa; on the outer mar- 

 gin of the external seen in H. eximius. (5) The rotular groove is also 

 narrower in the latter and not so deeply excavated as in T. roulini. 



The tibia is (1) reduced in size, and especially contracted distally; the 

 relative widths of the ends are 6 cm : 3.5 ; in T. roulini 7.5 cm to 5. 

 (2) The crest is more prominent and is deeply fissured by a groove, which 

 is represented by a shallow concavity in T. roulini. The groove (3) ex- 

 ternal to this is deeper. (4) The posterior inner tuberosity of the distal 

 end, is more median, hence the inner trochhar groove is further removed 

 from the anterior inner malleolus, which has, therefore, a greater inner 

 (not outer) extent. 



