416 



BULLETIN" 56, UNITED STATES NATIONAL MUSEUM. 



east of the San Joaquin Valley. It therefore represents a pale in- 

 terior form of the species. Doctor Allen's Feromyscus rohustus came 

 from the mountainous region near the coast, and represents a somewhat 

 darker form of Peromyscus hoylii, which it may prove desirable to 

 recognize, subspecifically, as a northern coast form. 



Mr. Rhoads's Peromyscus major, from San Bernardino, California, 

 is not recognizably distinct from P. hoylii. The specimens of this 

 species, collected by us on the east slope of the Coast Range, next to 

 the Colorado Desert, agree with Baird's type of P. hoylii and also 

 with specimens from San Bernardino, California, the type locality of 

 Rhoads's P. major. But from the west slope of the Coast Range we 

 obtained a series of specimens that are somewhat darker in color, but 

 not sufficiently different from typical hoylii to merit separation as a 

 race, being, in fact, much paler than Doctor Allen's type of P. rohustus, 

 which I have compared. 



Measurements of 15 specimens of Peromyscus hoylii. 



Locality. 



Mountain Spring, San Diego County, 

 California, near Monument No. 230. 



Easiem base of Coast Range Moun- 

 tains, San Diego County, Califor- 

 nia. 



Jacumba Hot Springs, San Diego 

 County, California, near Monu- 

 ment No. 233. 



do '. 



Nachoguero Valley, Lower Califor- 

 nia. 



do 



do 



do 



Campbell's Rancli at I aguna, San 

 Diego Comity, California. 



do 



do 



.do. 

 .do. 

 .do. 

 .do. 



Date. 



1894. 

 May 13 



May 8 



May 2.S 



May 30 

 June 1 



...do.. 

 ...do.. 

 June 8 

 June 15 



June 18 

 June 12 

 ...do... 

 June 15 

 June 16 

 June 20 



9 ad. 



cf ad. 



cf ad. 



9 ad. 

 cf ad. 



9 ad. 

 9 ad. 

 d ad. 

 9 ad. 



,f ad. 

 cfad. 

 cf ad. 

 cf ad. 

 9 ad. 

 9 ad. 



mm. 

 205 



195 

 205 



204 

 222 

 199 

 195 



210 

 185 

 190 

 199 

 210 

 202 



mm. 

 116 



106 

 108 



113 

 120 

 105 



111 

 93 

 95 

 93 

 412 

 105 



mm. 

 23.0 



22.5 

 22.5 



23.0 



22.5 



22.0 



23 



22.5 

 22.2 

 22.0 

 21.0 

 22.5 

 22.0 



mm. 

 16.5 



15.0 

 14.3 



15.5 



16.0 



13.0 



16 



16.0 

 14.7 

 15.0 

 10.0 

 14.0 

 15.0 



PEROMYSCUS BOYLII PINALIS (Miller). 

 APACHE BRUSH-MOUSE. 



Sitomys rowleyi pinalis Miller, Bull. Am. Mus. Nat. Hist., V, Art. XVIII, Dec. 16, 



1893, p. 331 (original description). 

 Peromyscus rowleyi pinalis, Allen, Bull. Am. Mus. Nat. Hist.. VTI, Art. VI, June 29, 



1895, p. 227. 



