234 



with a polished shining surface. Anterior extremity slightly nar- 

 rower than posterior ; dorsal margin somewhat convex ; ventral 

 margin nearly straight or slightly sinuated. Seen from the inside, 

 the shell near each extremity is toothed, or marked with a series of 

 small projections, like the teeth of a saw. 



Hab. Pools at Nagpur {Rev. S. Hislop). 



Mus. Brit. 



[P.S. Since the ahove was written, I have had my attention called 

 by Mr. Hislop, through my friend Mr. T. Rupert Jones, to a paper 

 by Mr. H. I. Carter, in the * Geological Papers on Western India, 

 1857,' in which the author mentions some of the recent Entomo- 

 straca found in the freshwater deposits of Bombay, and of which he 

 gives an outline sketch in the Atlas accompanying the volume. These 

 Mr. Carter considers as " the corresponding forms " of the fossil spe- 

 cies mentioned by Mr. Malcolmson and described by Mr. Sowerby ; 

 but he does not attach any name to them. 



In plate ix. of that Atlas, the species figured No. 19 is, without 

 doubt, the same as what I consider to be the Cypris cylindrica, 

 var. major, of this paper ; and the species figured No. 18 is evidently 

 identical with the Cypi^is subglobosa described and figured in this 

 paper also. The third species, figured No. 20, differs from any of 

 those collected by Mr. Hislop. — W. B.] 



10. Notes on the Habits of two Mammals observed in the 

 Somali country, Eastern Africa. By Captain J. H. 

 Speke, 46th B.N.I. 



The curious Rat discovered by me during my expedition into the 

 Somali country, and named by Mr. Blyth Pectinator spekii ( Journ. 

 As. Soc. Beng. xxiv. p. 294), inhabits the large cellular blocks of 

 lava on the sea-face side of the northern Somali sea-coast range 

 (lat. 9° N. and long. 47° E.). Several frequent one block, from 

 which they emerge on all sides at the same time, sit up like Squirrels, 

 and feed from their fore paws. From their general appearance and 

 size, with grey coating, bushy tails, and jerking hurried action, one 

 is much struck with their close resemblance to the Gileri, or common 

 Squirrel of India. 



They run in and out of these cells much in the way that the 

 Marmot and other stony-mountain Rats quit and re-enter their abodes 

 on the approach of any suspicious looking object, more especially 

 if that be man. 



Their habits are quite different from that of the Hyrax {Hyrax 

 habessinicus), which is also found in great quantities about those 

 hills. This animal climbs into and lies about in the branches of bushes 

 or small trees, but usually inhabits the rocky ledges and chinks as 

 described in the Journal As. Soc. Beng. xxiv. p. 296. I have seen 

 it as far south as 5° south lat. 



