Vol. IX] TAYLOR— COOPER'S MAMMALS 91 



Cal May 26th '62, J G C"; reverse "from old nest of Cactus 

 Wren 4 ft above ground 2 young on teats, in alcoh." 



Prepared as usual, part of skull inside skin; fore feet dis- 

 posed irregularly on breast, hind feet bent forward beneath 

 body; abdominal slit not sewed up; tail straight out behind, 

 not skinned ; body stuffed with cotton ; in good condition. 



The relatively long tail, which lacks the distinct dorsal and 

 ventral coloration characteristic of Peromyscus maniculatus 

 gambeliij demonstrates the identity of this specimen. 



Peromyscus maniculatus dementis (Mearns) 



"H[esperomys] Gamhelii" (probably part). Cooper, Zool- 

 ogy, in Cronise, The Natural Wealth of California, 1868, 

 p. 444. 



"Hesperomys ?", Cooper, Proc. Cal. Acad. 



Sci., 4, 1870, p. 77 (Collected on Santa Barbara Island, and 

 evidently observed on San Clemente; record of occurrence on 

 Santa Catalina Island is questioned). 



Specimen examined. — One: No. 7184, U. S. Nat. Mus. ; 

 obverse of label "Hesperornys gambellii S. Barbara I. Cal. 

 May 27th 63 J. G. C." 



Prepared as usual; a portion of the skull is inside the skin; 

 fore feet folded on breast, hind feet crossed behind body ; tail 

 not skinned. Specimen in good condition, except tail loose. 



Although no characters distinguishing this specimen from 

 topotypes of Peromyscus maniculatus gamhelii are clearly in 

 evidence, it should doubtless be referred to P. m. dementis on 

 geographic grounds alone. 



Peromyscus maniculatus sonoriensis (LeConte) 



"Hlesperomys] Sonoriensis (Leconte)," Cooper, Proc. 

 Cal. Acad. Nat. Sci., 2, 1863, p. 122 (Mojave River). 



"H[esperomys] Sonoriensis/' Cooper, Zoology, in Cronise, 

 The Natural Wealth of California, 1868, p. 444 (General note 

 covers all the Peromyscus). 



"Hesperomys Sonoriensis," Cooper, Amer. Nat., 3, 1869, p. 

 183 (Southern part of California). 



