Piocchimys/?'(9m JSoulh America. 59 



Dimensions of the type (measured in flesh) : — 



Head aud body 5G5 mm. ; tail 405 ; hind foot 83 ; 

 car 32. 



Skull : greatest length 121 ; condylo-basal length 110; 

 zygomatic breadth i'ti-? ; iuterorbital breadth 25 ; breadth 

 of brain-case 42'7 ; palatal length 71 ; combined length of 

 p* and the two molars 19; breadth of // 5'6. 



Ndb. Oricutc of Ecuador. Type from Gualaquiza. Alt. 

 2500'. 



Tt,'/)e. Adult male. B.M. no. 14. 4. 25. 39. Original 

 number 294. Collected 23rd November, 1913, by Gilbert 

 Hammond. Presented by Oldlicld Thomas. Four skins 

 with skulls, and two separate skulls. 



Closely similar as this animal is externally to iY. qitichua, 

 the uniform difference in the size of the skull indicates that 

 it should have a special name. Three adult skulls measure 

 in condylo-basal length, J 115, 110, $ 110, as compared with 

 10G*5 in a very old male of quichua. The combined length 

 of the three last teeth in the latter is only 175, and the 

 breadth of the carnassial 5'1. The type-locality of N. quichua 

 is Jima, on the other side of the Eastern Cordillera, at an 

 altitude of about 8000'. 



A very pale Nasua, obtained by Mr. M. G. Palmer in 

 1910 at Banos on the Rio Pastasa, is evidently a semi- 

 albino of this form. Its skull measures 114 mm. in condylo- 

 basal length. 



Lutra parilina, sp. n. 



L. platensis group. Nose-pad naked, sharply defined, 

 projected backwards above. 



Most nearly allied to L. emerita, with "which it agrees in 

 having the nose-pad entirely naked, sharply defined above 

 and below, and with the middle part of the upper edge pro- 

 jected backwards. But the projection is much broader and 

 more strongly marked, not a mere small point, but a broad 

 angular prominence, almost recalling the still more strongly 

 triangular point of L. canadensis. Colours and other external 

 characters as in L. emerita, a small yellowish patch on the 

 chest of the type. 



Skull with very narrow iuterorbital region, much narrower 

 than in an L. emerita of similar age. 



Upper carnassial slightly larger than in L. emerita, and 

 its inner lobe broader, extending backwards nearly to touch 

 the front cdjj;e of the molar. 



