18 ZOOLOGY. 



narrow line of white on their posterior edges. Buttocks, for some inches anterior to the tail, and belly white. Tail like the 

 back. 



Female with smaller horns, more like those of the goat. 



Specimens of this species were observed at various points on our route. A skull and several 

 horns were collected in the San Francisco mountains, New Mexico. 



OVIS AKIES, L. Common Sheep. 



A specimen, No. 164, was procured on account of its peculiarity in having four horns that 

 are well developed, being about eight inches long ; one on each side erect and one turned down. 

 It is said that many years ago the proprietor of an extensive hacienda on the Kio Grande 

 owned a large number of sheep possessing this peculiarity, and that the number of horns to 

 each individual was never less than three, and often as many as seven. His flock was driven 

 off by the Navajoe Indians, who still graze large numbers of these animals in the mountains of 

 New Mexico, among them many anomalies of this kind. 



