No. 2.] THE RELATIONS OF PROTOCERAS. 347 



in having distinct upper and lower projections. The sacral 

 articulation is placed unusually far back, nearly the whole of 

 the anterior expansion being in front of it. The acetabular and 

 pubic borders are quite widely separated at their points of 

 origin, but approximate forward; and the anterior part of the 

 iliac surface is a narrow groove. The ischial border, which in 

 Traguhis is nearly straight, is arched upward above the ace- 

 tabulum into a crest, as in the Pecora. The fossa in front of 

 the acetabulum and above the acetabular border is not so large 

 or so deep as in Moschus ; in Tragiilus it is wanting. The 

 acetabulum is small, nearly circular in outline, and deep ; the 

 fossa for the ligamentum teres encroaching but little upon 

 the articular surface. The ischium is long, deep vertically, 

 laterally compressed and plate-like in form. At the posterior 

 end it is considerably expanded, the dorsal border rising more 

 gradually and not forming an overhanging hook, as in Moschus. 

 The tuberosity is rather small, but prominent and rugose and 

 situated higher up than in the recent genus. The pubis at its 

 point of origin is slender and of a rounded, depressed section ; 

 but it soon expands and becomes plate-like, as in the Pecora, 

 not having the rod-like character found in the Tragulina. 

 The obturator foramen is a long, narrow oval, considerably 

 more elongate than in Moschus. As a whole, the pelvis is 

 thus distinctly pecoran in type. 



The Feimir (PI. XXII, Figs. 13 and 14) is much like that of 

 Moschus, though not without some considerable differences. 

 Thus, the head is less distinctly set upon a neck and is ovoidal 

 rather than hemispherical in shape. The great trochanter is 

 broader, more massive, and rises higher above the level of the 

 head; the deep digital fossa does not extend so far behind 

 the head and the ridge connecting the great trochanter with 

 the second is much more prominent. The second trochanter 

 forms a large, rugose, pyramidal protuberance. These dif- 

 ferences, it is obvious, are mere matters of detail; and the 

 proximal end of the femur is much more like that of Moschus 

 than that of Traguhis. A resemblance to the latter is seen in 

 the shaft, which is heavier than in Moschus, as well as longer, 

 but has a similar rounded shape and strong anterior curvature, 



