160 FIELD COLUMBIAN MUSEUM ZOOLOGY, VOL. III. 



all the hairs being plumbeous at the roots. This mouse is evi- 

 dently a dweller of high elevation, Vallecitos being 9,000 feet 

 above the sea, Agua de las Fresas 6,000 feet, and Hanson 

 Lagoon 5,000 feet, and is easily recognized by its pale color both 

 on body and tail. 



Peromyscus catalinse. Sp. nov. 



Type locality. St. Catalina Island, off coast of California. 



Gen. char. Size of P. t. gambeli, but with much longer tail, 

 ears and hind feet. 



Color. Upper parts grayish buff heavily lined with black, 

 lower back darkest; rump grayish buff; cheeks, nose and 

 sides buff; upper lip, lower side of face, entire under parts, 

 hands and feet, pure white; tail above dusky, beneath white; ears 

 brownish black. 



Measurements. Total length, 176; tail vertebrae, 92; hind foot, 

 23; ear from notch, 18. Skull: occipito-nasal length, 25; Hen- 

 sel, 19; zygomatic width, 13; interorbital constriction, 4; mastoid 

 width, 10.2; length of nasals, 8; width of brain case above audit- 

 ory meatus, 10; length of upper tooth row on alveolus border, 3. 



This form of Peromyscus is a near relative of P. t. gambeli, 

 but its insular habitat seems to have caused a lengthening of 

 limbs, tail and ears. Doubtless very old individuals would 

 exhibit a brighter pelage, as is witnessed in old adults of P. t. 

 gambeli. Indeed, one example of the small series before me does 

 show brighter color than the others. The tendency to concen- 

 trate the' black on the lower back, as seen in the type, is not 

 exhibited in all the specimens, some being a more uniform 

 grayish buff lined with black on the upper parts. 



Thirteen examples were received from Mr. J. Rowley, col- 

 lected by him in February on St. Catalina Island. 



SUBFAM. NEOTOMIN^E.. 



GENUS NEOTOMA, 

 Neotoma fuscus apicalis. Subsp. nov. 



Type locality. Gardiner, Coos County, Oregon. 

 Gen. char. Size large, tail bushy, tip white. Skull long, 

 narrow; orbital constriction considerable; rostrum long. 



Color. Top of head and upper parts mixed black and yellow- 

 ish, the former predominating; sides of head dark gray and 

 yellowish; sides of body yellowish buff slightly mixed with black; 



