404 Mr. 0. Thomas on 



Dimensions of tlie type (measured in flesh) : — 



Head and body 102 mm. ; tail 14; hind foot 21. 



Skull : condylo-basal length .30"2 ; condylo-incisive leno;Hi 

 32'5 ; zygomatic breadth 21*6; interparietal 2"4x7'4; 

 ])alatilav length 16'3 ; upper molar series, crowns 6"7, 



Hob. As above. 



Type. Old male. "B.M. no. 12. 4. 1. 141. Original 

 number 290. Collected 23rd June, 1911. 



In spite of the considerable difference in locality, T can 

 find no cranial difference of importance between the Barlik 

 Ellohius and that of Samarkand. But the colour-difference 

 is so uniformly constant tbrou2:hout the two series that I 

 think it should be recognized by giving a special name to 

 the present form. 



Besides those obtained by j\[r. Carruthers, the following 

 two forms of EUobius would seem to deserve description : — 



Ellohius kashtchenkof, sp. n. 



Size almost as in E. talpinns. Colour dark, essentially 

 as in the darker specimens of E. cwnoftus. Head not heavily 

 blackened. Back dull cinnamon, sides rather more buff}- ; 

 under surface washed with " wood-brown." 



Skull, although smaller, shaped about as in E. ccpnosus, 

 the interparietal similarly extended antcro-posteriorly, though 

 its anterior edge is more evenly convex forwards. 



JMolar series much shorter than in E. crcnnsuft. .1/' small, 

 quite simple, cylindrical or with a slight concavity only on 

 its inner side. 



Dimensions of the type (measured in skin) : — 



Head and body 110 mm. ; hind foot 21. 



Skull : condylo-basal length (c.) 30'5 ; gnathion to basilar 

 suture 24'5 ; zyjiomatic breadth 21*6; nasals 7*6; inter- 

 orbital breadth 5'2 ; interparietal 4x7'8; palatilar length 

 16"6 ; diastema 11; palatal foramina 3*7; upper molar 

 series, crowns 6'5, alveoli 7'2. 



Hah. Lokotj, 60 kil. west of Smeinogorsk, Tomsk 

 Government, Siberia. 



Type. Young adult male. B.M. no. 9. 9. 1. 7. Collected 

 12th June, 1900. Received in exchange from the Tomsk 

 Museum. 



This species is externally very similar to E. ccenoans, but 

 is at once distinguished by its shorter tooth-row and its 

 simple m'^, which is less complicated than in other Central 

 Asian EUobius. 



