1909. J 



ON A NEW RAT FROM GUATEMALA. 



669 



white spots, as is shown not only in the photograph (text-fig. 217),. 

 but by a piece of the hide presented by Mr. Porter to the British 

 Museum. When noticing this animal in ' The Field ' newspaper 

 Mr. Lydekker suggested that the spotting might be a " sport," or 

 due to senility ; but since that date a second spotted Tsaine has 

 been killed by Mr. Elwes, a friend of Mr. Porter, in the same 

 forest. This considerably alters the case, although there is no 



Text-fi^. 217. 



Spotted Bull Tsaine from Siam, pliotograplied by Mr. Elwes. 



information as to whether all adult male Siamese Tsaine are 

 flecked with white. As no such flecking has been recorded in 

 Burmese Tsaine {Bos sondaicus hirmanicits), Mr. Lydekker ven- 

 tured to provisionally propose the name B. sondaicus j^orteri for 

 the Siamese Tsaine, taking the piece of hide in the British 

 Museum as the type. 



A neio Rat from Guatemala.^ 



Mr. Oldfield Thomas, F.E..S., F.Z.S., exhibited specimens of a 

 new Rat which had been obtained by Mr. G. 0. Shortridge during 

 the collecting trip to Central America on which he had been 



* [The complete account of this new species appears here, but the name and a 

 preliminarj'- diagnosis were published in the ' Abstract,' No. 73 (June 15, 1909). — 

 Editoe.] 



