EINAR LÖNNBERG, MAMMALS FROM ECUADOR. 17 



The Peruvian specimens, which have been used for com- 

 parison have been collected in Nov. 1904 at Ollachea, Peru 

 about 2000 m. altitude by Dr. Nils Holmgren, now Pro- 

 fessor at the Stockholm High School. The first of the speci- 

 mens presents teeth in about the same stage of wearing as 

 the Ecuadorian specimen, the other is somewhat younger, 

 but fully adult and with m^ somewhat worn. The measure- 

 ments are thus quite comparable in all cases. They prove 

 thus, that the typical O. peruvianus Gray is very much 

 smaller than its representative in the Andes of Ecuador. The 

 difference is especially striking with regard to the longitud- 

 inal dimensions, while those expressing the breadth are not 

 so much different. The teeth of the Ecuadorian Deer are 

 also larger than those of the Peruvian one. The difference 

 in size of these skulls is so great, that the two Deer must 

 be regarded to represent different races. The general shape 

 of the skulls is otherwise rather similar, as it ought to be. 

 The forehead is keeled along the frontal suture, as already 

 Gray has remarked, but this feature is perhaps a little more 

 pronounced in the smaller Peruvian animal. With regard to 

 the teeth it may be remarked that the profile line of the 

 upper molar series is much more strongly curved in the 

 smaller race than in the larger one, which no doubt stånds 

 in correlation to the shortening of the skull, because by 

 means of this curving the grinding surface is less shortened, 

 than if the profile line had been straight. The accessory 

 columns of the molars as well of the maxillary as of the 

 mandible are much better developed in the smaller than in 

 the larger race, in which they partly are missing. 



The length of head and body of the Ecuadorian race is 

 about 150 cm. to judge from the dry skin. The tail (dry) 

 without hairs is about 12 Vs cm. The length of the hind 

 foot is (approximately) 38 Va cm. This appears to be about 

 ten centimetres longer than the corresponding dimensions of 

 the typical Peruvian race. 



The typical locality of Odocoileus peruvianus Gray is 

 Peru, and I consider myself therefore entitled to regard the 

 specimens from Ollachea as representatives of the typical 

 race. The deer from Ecuador must therefore have a sub- 

 specific name, which T propose to be O. p. consul. 



Arkiv för zoologi. Band 14. N:o 20. 2 



