Vol. XXIX, pp. 83-84 April 4, 1916 



PROCEEDINGS 



OF THE 



BIOLOGICAL SOCIETY OF WASHINGTON 



DESCRIPTION OF ANEW PINE MOUSE FROM FLORIDA. 

 BY ARTHUR H. HOWELL. 



Audubon and Bachman recorded the pine mouse from Florida 

 in 1851,* but modern collectors have until very recently failed 

 to find the species in the State. Bangs, in his paper on Florida 

 mammals, was unable to give any information as to the occur- 

 rence of the animal there. t 



In November, 1913, Stanley E. Piper, of the Biological 

 Survey, secured a single specimen at Ocala, Florida, the skull, 

 however, not being preserved, and in December, 1915, Ray T. 

 Jackson, also of the Biological Survey, succeeded in trapping 

 four more at the same place. These prove to represent a very 

 distinct form, which is here described. 



Pitymys parvulus ap. nov. 



FLORIDA PINE MOUSE. 



Type. — Adult female, skin and skull. No. 210,485, U. S. National 

 Museum (Biological Survey Collection), from Ocala, Florida; collected 

 December 15, 1915, by R. T. Jackson. 



General characters. — Similar to Pitymys pinetorum pinetorum, but paler 

 and decidedly smaller. 



Color. — Adult: Upper parts tawny (of Ridgway, 1912), shading on 

 sides and tail to vinaceous-cinnamon ; under parts dusky, faintly shaded 

 with vinaceous-cinnamon ; feet flesh color. Young : Upper parts between 

 fawn color and wood brown ; under parts drab without cinnamon suffusion. 



Skull. — Similar to that of pinetorum but much smaller ; nasals relatively 

 shorter; mastoid portion of bullae more inflated. 



Measurements. — Type (adult 9): total length, 94; tail vertebrae, 15; 

 hind foot, 14. Skull: basal length, 19.3; length of nasals, 5.7; zygomatic 



• Quad. N. Am.. II, 1851, p. 219. 



+ Land Mamm. Penin. Florida, etc., Proc. Boston See. Nat. Hist.. Vol. 28.1898, p. 182. 



17— Proc. Biol. Soc. Wash., Vol. XXIX, 1910. (83) 



