MAMMALS FROM WESTERX CIIIXA. IGl 



nearly allied to P. loardl, but the colours of the two are iieai^ly at 

 the opposite ends of the scale. 



4. Myotis ai.tarium. 



Thos. Abstr. P. Z. S. 1911, p. 3 (Feb. 14). 



(? . 2427, 2428, 2429, 2431, 2433. $ . 2422-2426, 2430, 2432. 

 Omi-san, Sze-chwan. 6000'. 



A large species — about the size of M. bechsieini — -the skull 

 remarkably shortened. 



Size large as compared to ordinary small species of Myotis. 

 Fur rather long, but thin and poor, at least in summer pelage ; 

 hairs of back about 8 mm. in length. General colour above 

 uniform dull brown (paler than " Front's brown "), the tips of the 

 hairs rather lighter. Under surface little lighter than upper, 

 except that the tips of t]}e hairs are more distinctly lighter. Ears 

 long, nearly as long as in M. bechsteini, but rather narrow ; inner 

 edge evenly convex, outer slightly concave above, convex in lower 

 half, a strongly develo^jed antitragal lobule at its base, separated 

 by a deep notch. Tragus long, not very sharply pointed, evenly 

 but slightly curved outwards ; a well-marked lobule at its outer 

 base. Membranes naked throughout ; no fringe on interfemoral. 

 Feet rather above normal size, but not as in " Leuconoe^' ; calcar 

 extending I'ather more than halfway towards the tip of the tail ; 

 a very narrow postcalcareal lobule. 



Skull different in shape from that of ordinary il/yo^is, owing to 

 the shortening of the rostrum, which is broad and evenly narrowed 

 forwards, instead of there being a narrow and nearly parallel-sided 

 anterior portion. This condition is, however, approached in 

 M. pequiniiis. Upper outline without frontal convexity, nearly 

 straight from its highest point near the lambda to a point over 

 the small premolars, then abruptly concave, the short nasal region 

 7'eiroussee. Palate unusually vaidted. 



Middle upper premolar about half the size of the anterior, both 

 in the tooth-row ; and the same is the case with the lower 

 premolars. 



Dimensions of the type, the stain^ed measurements taken in the 

 flesh :— 



Forearm 45 mm. 



Head and body 55* ; tail 48* ; ear 22* ; ti\agus on inner edge 8 ; 

 third finger, metacarpus 40, 1st phalanx 13"3; lower leg and 

 foot (c. u.) 29. 



Skull: greatest length 15-2, basi-sinual length 12; breadth of 

 brain-case 7*9 ; front of canine to back of m^ 6"5. 



Mab. as above. 



Ti/pe. Adult female. B.M. ISTo. 11.2.1.9. Original number 

 2423. Collected 2 August, 1910. 



This is a most peculiar species and readily recognizable by its size, 

 long narrow ears, and the unusual shape of its skull, which differs 

 considerably from that of most members of the genus, although 

 another Chinese species, M. peqainius, shows an approach to it. 



Proc. Zool. Soc— 1911, No. XI. 11 



