18/4 DR. F. STOLICZA ON OVIS POU. 425 



«iX d rG t H% ti rr? at i^r ? nsest at the iines (•«■* 



respect vely t, Or H, I, J, fig. 2, p.424). According to the direction in 

 wh.ch the razor has been passed, the polygonal, oval oatshaned or 

 linear aspect of the epithilium is revealed^ Th upp ' e Z IZarZ 

 (of E) has a ragged edge, where the scales hJe a tended? o 

 desqnama e ; whereas the opposite lower or attached „2 is 

 smooth-edged and denser in quality. Thns tufts or prolonged rod 

 to fit into the interspaces of the underlying follicular layer are 

 wanting evincing therefore other conditions to the relativeTsposi- 

 faon of the parts (Compare the drawings F and A, fig , p P 4? T 

 which correspond as to magnitude and direction made ) P ' ' 



Having correlated the sac to the gizzard, we narrow the question 

 though we still have to explain physiologically how reproduction of 

 fresh and successive linings is effected whilst the viscus, P S o to say re 

 mains intact. It should be borne in mind, then, that the film o7firm 

 membrane in question is to all intents a true corneous structure and 

 comparable therefore with the outer stratum of the skin or elide/ 

 m,s, ordinary horn, or, in the case of the cylinder vark v whh the" 

 horn of the Rhinoceros. The successive and rapid development of 

 cells from be ow pushing onwards those above would readily admi 

 of desquamation en masse, and without interfering with I frS 

 growth. Indeed there is ample testimony of scaly tata in the 

 microscopical sections in support of this view, which ^cords more 



ZZX 'ri^Jef T J" d T a r ph ° SiS ° f -rne C ous teSu s 

 general!;, lhat the ejected sac should retain the shape and peculiar 

 corrugated appearance of the interior of the gizzard Tit to be 

 wondered at when we consider that it is but a solid though flexible 



zr ^:— s > eIevations ' and de p ressi - ° f ^m^il: 



2. Description of the Ovis poll of Blyth. 



By Dr. F. Stolicza, Naturalist to the Yarkund Mission. 



[Keceived May 24, 1874.] 



(Plate LIII.) 



Ovis poli, Blyth. (Plate LIII.) 



Male, in winter dress— General colour above hoary brown di- 

 stinctly rufescent or fawn on the upper hind neck and above' the 

 shoulders, darker on the loins, with a dark line extending aW he 



S.£2f f 2 vf- *f\ *f Cad ab ° Ve and at the Slde * a greyish brown 

 darkest on the hind head, where the central hairs are from 4 to 5 



inches long while between the shoulders somewhat eloi gatod hSrs 



ndicate a short mane. Middle of upper neck hoary wh tf Sneral h 



tinged with fawn; sides of body and the upper pare of the [mbs 



shading from brown to white, the hair becoming moreand more tipped 



with the latter colour. Face, all the lower parts, limbs, Z anH 



the hinder parts, extending well above towards the loins, pure white 



Proc. Zool. Soc— 1874, No. XXVIII. 2 8 



