1890.] MR. W. L. SCLATKR ON SOME INDIAN MURID.E. 527 



of the molars. These points are at once apparent on examination 

 of the second table of measurements of all the skulls (given below, 

 pp. 536, 537), where the measurements have been reduced to a 

 percentage of the total length of the skull. 



I send figures of the skull (see Plate XLIV. fig. 3), 

 The following are the measurements in inches of examples pre- 

 served in spirit, taken in the same way as the measurements given 

 in Mr. Thomas's paper (I, c.) : — 



d. 2- 



Head and body 4'70 4-40 



Tail — 5-07 



Hind foot 0-93 0-90 



Forearm and hand . . I'lO 1'08 



Ear-conch 0-58 0-50 



Muzzle to ear 1-20 1-45 



16. Mus uRBANus, Hodgs. ; Thomas, P. Z. S. 1881, p. 544. 



This, the common House-Mouse of India, is doubtfully different 

 from the almost universally distributed Mus musculus, the European 

 House-Mouse ; it has been treated by Thomas in his paper as dis- 

 tinct, and has therefore been left so in the present paper. Blyth 

 stated that Mus musculus has larger ears, smaller eyes, and broader 

 paws than Mas urbaniis, and further that the tail of Mus musculus 

 is one-fourth shorter ; none of these differences, however, hold good 

 when many specimens are examined. 



To the synonymy given by Mr. Thomas, Mus kal-h>/ensis and 

 Mus viculorum, described by Dr. Anderson (Yunnan Exp. i. pp. 307, 

 308) from two specimens procured in Yunnan, may be added, as a 

 careful examination of the specimens fails to show any characters 

 by which they may be distinguished from the ordinary Indian 

 House-Mouse. 



Mr. Thomas gives the whole of India as the habitat of this 

 species ; there are not, however, any examples of it in the Indian 

 Museum from the Punjab or North-west of India, where Mus 

 hactrianus seems to take its place. On the other hand, there are 

 specimens from Ceylon, from various places in Assam and Cachar, 

 from Burma, and from the Andamans and Nicobars. 



17. Mus BACTRiANus, Thomas, P. Z. S. 1881, p. 546. 



This species replaces the last as the common House-Mouse in the 

 North-west of India ; it differs from Mus urhanus in its white belly 

 and pale colour ; the skull also seems to differ from that of Mus 

 tirbanus in being longer and narrower (of. table of reduced measure- 

 ments, p. 537). 



There are examples of this species in the Museum from the 

 Punjab and Sind, from Ladak and the Pir Pinjal Pass, and from 

 Simla ; also jrom Baluchistan, Southern Persia, Palestine, and 



Egypt. 



