608 JOURNAL, BOMBAY NATURAL HIST. SOCIETY, Vol. XXIII. 



(Bombay N. H. Soc. ) and Lake Palti, Tibet. Also from Formosa 

 ( Swinhoe). M. rufo-niger, Tomes, from the Yang-tze is still more 

 richly coloured, smaller, with smaller teeth and a differently shaped 

 skull. 



A species which appears to be allied to M. formosus , though without 

 the characteristic coloration, is the following : — 



Myotis sicarius, sp. n. ■ 



General size as in M. formosus, but the wing-bones longer. Ears 

 about as in formosus, much smaller than in hlythii or dobsoni, inner 

 margin convex below, nearly straight above ; tip narrowly rounded 

 off; outer margin slightly concave above, convex below, with a 

 narrow basal lobe. Tragus rather short, its inner margin straight, 

 outer margin slightly convex, the broadest part near the base of the 

 inner margin ; basal lobule large rounded. Wings from the meta- 

 tarsus near the base of the toes. Oalcar reaching about half-way 

 towards the tail-tip ; a narrow post-calcarial lobule present. 



Colour dark-brown above and below, the extreme tips of the 

 belly hairs whitish. Wing-membranes uniformly translucent 

 brown. 



Teeth exactly as in M. formosus, the small middle premolar simi- 

 larly crowded inwards above and in the tooth-row, though crushed 

 below. In M. hlythii the small premolars are uncrowded both above 

 and below. In M. dohsoni the " first upper premolar is very small, 

 scarcely visible from without, and not much larger than the second," 

 a condition which does not occur in any Myotis I have seen, and 

 possibly abnormal. 



Dimensions of the type (not quite fully adult ) : — 



Forearm 53 mm. 



Tail 46 ; ear on inner margin 13-5 ; tragus on inner margin 5'o; 

 third finger, metacarpus 46-5, first phalanx 12*5; tibia 21; hind 

 foot 10-2. 



Skull, front of canine to back of m^ 6*7; front of p* to back 

 of m' 4-6. 



Hab. — Northern Sikim. 



Type. — Immature skin in spirit, B. M. No. 91. 10. 7. 56, coDect- 

 ed by L. Mandelli. Presented by W. T. Blanford. 



The specimen on which this species is founded was in Mr. Blan- 

 ford's collection, but was never definitely determined by him. At 

 one time it was supposed to be M. dobsoni, but is distinguished from 

 that animal (which probably equals M. blyt/iii) by its much shorter 

 ears and feet, and such other characters as distinguish it from the 

 M. truijotis group, to which M. dohsoni was said to belong. From 

 M. formosus it is at once separated by the absence of the " dead-leaf" 

 pattern. 



