208 Field Columbian Museum — Zoology, Vol. III. 



FAM. ANTILOCAPRID^. 



ANTILOCAPRA. 



Antilocapra a. mexicana. 



Antilocapra a. mexicana. Merr. Proc. Biol. Soc, Wash., 1901, 



P- 3i- 



1. S Juv., San Felipe, Gulf of California. 



" At rare intervals antelope have been observed at Rosarito" ; tracks 

 were seen at San Matias Spring ; and the animals "occasionally come 

 into the Canon Esperanza for water from the near-lying desert." At 

 San Quentin "a few occurred until recently west of the bay on the 

 north end of the peninsula west of the town. This was apparently 

 their northern range on the Pacific coast. It is not rare on the coast 

 south of this place." At San Felipe Bay on the eastern coast "a few 

 antelope inhabit the plains near the bay, but from the number of 

 tracks seen there are probably less than a dozen. No herds of any 

 size occur and they are usually seen singly or in bunches of three or 

 four. The Indians report seeing as many as fifteen occasionally 

 in a band." 



FAM. BOVID^. 

 OVIS. 

 Ovis cervina nelsoni (?) 



Ovis cervina nelsoni. (Merr.) Proc. Biol. Soc, Wash., 1897, p. 

 217. Elliot, Syn. N. Am. Mamm., 1901, iii., p. 46. 



13 Specimens: n ad. 2, 1 6 juv., 1 2 juv. Mattoni, San Pedro 

 Martir Mountains. 



I refer all these specimens to the form described by Dr. Merriam 

 from the Grape Vine Mountains, boundary line of Nevada and Cali- 

 fornia, with some doubt. It is very difficult merely from a brief de- 

 scription to determine with any certainty whether two closely allied 

 individuals from widely separated localities are of the same species or 

 not, and as there are already too many named forms of mountain 

 sheep, I have no desire to introduce another doubtful one, and for 

 the present at all events, prefer to retain these specimens under the 

 above name, until they can be compared with topotypes of the 

 race named by Dr. Merriam, and a satisfactory decision be reached. 

 The San Pedro Martir sheep is a small animal, with all the under 

 parts, except a small white patch on the inguinal region and front 

 part of fore and hind legs, blackish brown. White rump patch, 



