408 JOURNAL, BOMBAY NATURAL RI8T. SOCIETY, Vol. XXVI. 



Judging from their external appearance and from their skulls, these 

 rats are nearly related to R. r. narbadce and girensis, and have little 

 or nothing to do with B. r. gangutrianus 



15. Raftiis rattus nemoralis, Blyth. 



1851. Mus nemoralis, Blyth, J.A.8.B., vol. xx, p. 168. 

 1915. E^nmys nemoralis, Wroughton, J. Bombay N. H. Soc, 

 vol. xxiv, p. 49. 



Type : — The co-types of this sub-species are in the Indian Mu- 

 seum, Calcutta ; a female labelled by Blyth and presented by Dr. 

 Kelaart to the British Museum (52.5.9.28) is, as pointed out by 

 Wroughton, a metatype. 



Distribution : — " Distributed sparsely as a tree-rat all over Cey- 

 lon, up to 1,500 feet altitude," (Wroughton). 



Material examined : — The metatype ; and 37 collected for the 

 Mammal Survey by Major Mayor. 



In outward form and coloration this rat is hardly to be distin- 

 guished from rufescens. Judging from the skull measurements 

 given in tables II (d) and II (g), part III, nemoralis differs rather 

 conspicuously from r. handianus in its longer pterygoid region, 

 shorter nasals, and less closely approximated temporal ridges. B. r. 

 '' rufescens '' is far too indefinite a "subspecies" to compare in 

 these respects ; as an insular and more easily definable race, 

 nemoralis may conveniently be retained as distinct. 



The dimensions of the specimens mentioned in the table of skull 

 measurements are ; — 



Colombo (B.M. 15.3.1.) :— 



.173 d , 25 Apr. 1913 209-235-34 -23 = 100-112-16.2-11 



S.l 6 , 29 Mar. „ 160-197-31.5-22 = 100-123-19.7-13.7 



.174 $,25 Apr. „ 203-215-32-21 =100-106-15.7-10.3 



Hambantota. 



.175 d , 5 June 1913 175-212-31.5-22 = 100-121-18 -12.6 



.176 $ ,13 „ „ 164-215-31.5-22.5 = 100-131-19.2-13.7 



Kandy. 



.182 s ,16 Feb. 1914 159-204-30 -20.5 = 100-128-18.9-12.9 

 Average of 32 in adult pelage : — 



160-191-30.8-21.1 = 100-119-19.25-13.2 



The mammae are usually 2-3 = 10, but 12 were counted in one 

 spesimen, and 11 in another. 



16. Rattus rattus alexandrinus, GeofFroy. 



1916. Rattus rufescens and rufescens var. with white underparts, 

 Wroughton, Report No. 24, /. Bombay N. H. Soc, xxiv, 

 p. 756. 



The rats collected in Sind for the Mammal Survey by Mr. S. H. 

 Prater, together with some specimens from the same region pre- 



