200 My. 0. Thomas on 



niesially 3' 7 ; interorbital breadtli 6*1 ; tip to tip of post- 

 orbital processes 10' 7 ; interparietal 4x8; palatilar length 23; 

 diastema 14; palatal foramina 5; length of upper molar 

 series (crowns) 6*5, (alveoli) 8"5. 



I fab. and type as above. The specimen not old, the molars 

 being little worn down and the basilar suture not quite 

 closed. 



This Nesoh'a is probably the form referred to N. Huttoni 

 by Radde and Walter * in their paper on the mammals of 

 Transcaspia, while they described as new a species (" N. 

 BoettgerC'') which appears to me to be really assignable to 

 the true A'^. Iluttoni, as also^ I think, is probably the case 

 with Nehring's " JS. Iluttoni var. S itunini " f from Merv. 

 The majority of the measurements of the skull given by 

 Radde and VValter for N. Boettgeri might actually have been 

 taken from the typical skull of iV. Huttoni now in the British 

 Museum (no. 79. 11. 21. 499), whilea topotypeof iV. H. Satu- 

 nini is also quite similar. 



iV. Bailwardi mainly differs from N. Iluttoni by its larger 

 size, more bowed skull, and the heavier supraorbital ridges, 

 these characters being the more noteworthy as the typical 

 skull is distinctly younger than that of the Kandahar species. 

 A close ally is described in the succeeding paper. 



12. Microtus terrestris persicus^ de Fil. 



S . 110. S. coast of Caspian Sea. Alt. 0'. 



" Trapped on banks of a stream." — R. B. W. 



As with the type of Crocidura fumigata, I have been most 

 kindly allowed the loan of de Filippi's examples of his 

 " Arvicola amphibius var. persicus " by the authorities of 

 the 'i'urin Museum. 



To that torm two voles frotn Van, obtained in 1896 by 

 Major W. H. Williams, were referred by Barrett-Hamilton J, 

 and the interest in examining the type was to see if it 

 presented the peculiar rounded character of the molars, to be 

 described further on, which was present in these Van 

 examples. 



De Filippi's specimens consist of a stuffed specimen and 

 an imperfect skull ; but as it was possible that the two indi- 

 viduals might differ in the character of their teeth, I have 

 been permitted to extract the skull of the stuffed specimen, 

 which must be regarded as the main type, since the external 



* Zool. Jahrb. Syst. iv. p. 1036 (1889). 

 t SB. Ges. nat. Fr. Berl. 18'J9, p. ]08. 

 X Ann. & Mag. Nat. IJist. (7) iii, p. 224 (1899). 



