40 Dr, N. Severtzoff on tlte Mammals of Turkestan. 



Ophiocoma hrevispinosa, ii. sp. 



Disk subcircTilar, flat above, minutely granulated above and 

 below ; oral shields heart-shaped, broader than long ; adorals 

 small, crescentiform, bordering the sides of the orals ; mouth- 

 papilla three or four on each side of an oral angle, and a group 

 of about twelve at the apex ; teeth four, the two intermediate 

 ones larger than the two exterior. Arms a little more than 

 three times as long as the diameter of the disk ; upper plates 

 transversely oval, about twice as broad as long ; lower plates 

 (twelfth from the base) a trifle longer than broad; aboral margin 

 arched and a little pointed in the middle, lateral edges rather 

 deeply excavated ; oral margins a little convergingly sloping 

 and interiTipted by the outer margin of the previous plate ; 

 tentacle-scales two, short and compressed : brachial spines 

 short, four (sometimes five on a few plates just beyond the 

 contour of the disk), the two upper ones shorter than the 

 others, broad and flattened ; the two inferior ones (of which 

 the second or upper one is a trifle the larger) are slightly 

 conical, and not so long as the width of the broadest dorsal 

 arm-plates. 



Colour (of specimen in alcohol) : — disk dirty white, mottled 

 irregularly with green above and beneath ; arms of the same 

 colour as the disk, with a narrow green line, more or less 

 distinct, down the centre ; lower plates, ambulacral scales (and 

 two lower series of spines for the most part) uniformly dirty 

 white, and the two upper series of spines with one or two 

 greenish rings and dots ; oral shields spotted with green. 



Diameter of disk 17 millims., length of arm about 54. 



V. — The Mammals qf Twkestan. By Dr. N. Seveetzoff. 



[The results of Dr. Severtzoif's investigations into the verte- 

 brate fauna of Turkestan appeared in 1873 (Proceedings 

 of the Moscow Society of Naturalists, vol. viii. p. 2) ; but 

 having been written in Russian, they have remained practically 

 unknown to most western zoologists. Mr. H. E. Dresser has 

 recently published an abstract of the ornithological portion, 

 with critical notes and additional information communicated 

 by the author, who visited England last summer (' Ibis,' 1875, 

 pp. 96, 236, &c., 1876, pp. 77 &c.). In the following pages I 

 have translated Dr. SevertzofF's observations on the Mammals, 

 and have added the substance of a few MS. notes of the author 

 from Mr. Dresser's copy of the work. I have to acknowledge 



