Mr. O. Thomas on Ferret- Btuhjers. 19.) 



case 1 1"3 ; |)alatine foramina 10 ; palatal bridge 2 ; antero- 

 posterior ienf,fth of bulla 9'5 ; upper tooth-series Oilveoii) G'7. 



Hah. W. Sze-chwau. Typo from 8!iu-o-lo (Tscliuwo), 

 Ni:i-iiong, N.W. of Ta-chien-lu. Alt. 13,000'. 



Tupe. Adult male. B.M. no. 13. 9. 13. IG. Collector's 

 number 2-l(>. Harvard number 7601. Collected 20tli August, 

 1908, by W. R. Zappey. Received in exchange from the 

 ]\luseum of Comparative Zoology, Harvard. 



The light nape-patcho3 are no doubt less developed in 

 winter, but, as I have had for comparison an August specimen 

 of ihibetana collected by Mr. Anderson, I have been able to 

 see that they are certainly more conspicuous in zappe;ji than 

 they are in thibetana. 



This species was named 0. hodr/soni in ]\Ir. Glover Allen's 

 admirable paper on Sze-clnvan mammals, he, like other 

 people, having been deceived by the confusion which has 

 surroundetl the determination of these small Pikas, and es[)e 

 cially by the mistaken identification of the somewhat similar 

 Sikim species with 0. hodfjsoni by Bonhote. I have named 

 it after Mr. Zappey, who made the fine collection in which it 

 occurs. 



XIX. — Some Notes on Ferret-Badgers. 

 By Oldfield Thomas. 



(Published by permission of the Trustees of the Biitish Museum.) 



Owing to their extreme external resemblance to one another, 

 all the ferret-badgers have usually been considered as of one 

 genus, though sorterl into groups according to the sizes of 

 their teeth. The ditierences in the teeth, however, are so 

 great that I consider that the large-tootiied forms {Melogale) 

 and the small-toothed forms (Ilelictis) should be generically 

 distinguished, especially as the characters of the baculum 

 both confirm the division and indicate a reason for the sepa- 

 ration of a third genus for the N.-Boincan species Helictis 

 everetti. Merely going by the teeth, the position of tiiis 

 species had been somewhat doubtful and a cause of hesitation 

 in the frank separation of the groups. 



So far as appears, //. everetti would appear to be anneelaut 

 Ann. tfc Mag. N. Hint. Ser. 9. I'ol. ix. 13 



