Vol. XXIV, pp. 3-6 January 28, 1911 



PROCEEDINGS 



OF THE 



BIOLOGICAL SOCIETY OF WASHINGTON 



DESCRIPTIONS OF TWO NEW RACCOONS. 



BY GERRIT S. MILLER, Jr. 

 [By permission of the Secretary of the Smithsonian Institution.] 



The United States National Museum contains specimens of 

 two species of Procyon which appear not to have been hitherto 

 described. 



Procyon pumilus sp. now 



Type. — Young adult (rostral sutures open, those of braincase closed; 

 teeth slightly but evidently worn), skin and skull, No. 171,983, U.S. 

 National Museum. Collected at Ancon, Panama, by Dr. Allan H. 

 Jennings. 



Diagnosis. — Resembling Procyon pygmseus Merriam of Cozumel Island, 

 Yucatan, but size somewhat less diminutive, color less yellowish, teeth 

 relatively less reduced, and nasal hones not distinctly widened posteriorly. 



Color. — Upper parts and sides a clear grizzled gray without evident 

 yellowish tinge, the underfur drab, darkening ajipreciably at ends of 

 hairs, the longer hairs with black tip and a subterminal annulation of 

 huffy white; the whitish element in excess on neck, shoulders and sides, 

 the black along middle of hack, especially across lumbar region, where it 

 lends to produce a median line; crown like sides but more finely grizzled 

 and with light element a clearer white ; face markings normal, but black 

 band broader than in P. pygmseus and light area above eyes correspondingly 

 reduced ; tail dull hurt' in strong contrast with gray body, the seven black 

 rings well defined, about half as wide as the light interspaces ; underparts 

 drab mixed with the whitish of the longer hairs, but without black except 

 for the broad dark interramial band; fore legs like sides but strongly 

 tinged with drab ; hind legs similar but becoming blackish on inner side 

 above heel. 



Skull. — The skull differs from that of Procyon pygmseus in its slightly 

 less reduced size, in the form of the audital bulla 3 and apparently also in 

 the outline of the nasal bones. Audital bulla? with meatal region distinctly 

 more tubular than in either P. pygmivus or P. heruandezii, the difference 

 apparently due to reduction in the area of inflated portion. Nasal bones 

 2— Proc. Biol. Soc. Wash., Vol. XXIV, 1911. (3) 



