Merrictm Xe' M<mnn<ils from Coznmel Island. 101 

 Procyon pygmaeus sp. nov. 



Type from Cozumel Island, Yucatan, No. 108,511, H 7 yg-ad., U. S. Na 

 tional Museum, Biological Survey Collection. April 14, 1901, E. W. 

 Nelson and E. A. Goldman. Original No. 14,098. 



Characters. Similar in general to P. hernandczi, but only about half 

 the size of that animal: chin and throat separated by a strong band of 

 black; tail yellowish with six or seven annulations. 



Color. Upperparts grixxled grayish with a yellowish tinge along the 

 middle of the back, and rather uniformly mixed with black hairs; top 

 of head grix/led gray; face marked by usual transverse black bar en 

 closing the eyes and sending up a short dusky streak to the forehead; 

 the black facial band separated from gray of top of head by a whitish 

 band divided in the median line by dusky: ankles dusky: chin, lips and 

 sides of nose whitish: throat crossed by broad band of, dusky: under 

 pants grixxled grayish with a yellowish suffusion; fore feet grayish 

 throughout: hind feet grayish with a brownish suffusion especially on 

 outer side: tail yellowish marked with six or seven dark brown or black 

 ish rings which are faint below and much less black above than in the 

 other species. 



Cranial characters. Skul] similar in general to that of lu-rnandezi but 

 verv much smaller: nasals short, expanded and rounded posteriorly; 

 teeth less than half the si/e of those of hcrnandezi; last upper molar 

 relatively, as well as actually, much narrower: first upper molar rela 

 tively smaller so that the middle upper molar is conspicuously larger 

 than the others: premolars above and below more spaced and very much 

 smaller. 



Remark*. This pygmy raccoon is by far the most interesting discov 

 ery made by Nelson and Goldman on Coxumel Island. While in many 

 respects it is a miniature of its relative of the adjacent mainland, it 

 possesses characters which would distinguish it at a glance, even if of 

 the same sixe. Among these characters may be mentioned the broad 

 black throat band, the golden yellow tail, the short posteriorly expanded 

 and rounded nasals, and the peculiarities of the teeth. 



Measurements. Type specimen ($ yg-ad): total length ()(>7: tail ver 

 tebrae 230; hind foot 90. A 9 yg-ad: total length G(i5; tail vertebra? 

 250; hind foot 97. 



Skull. Type specimen ($ yg-ad): basal length 88: occipitonasal 

 length 88; palatal length (not including spine) 58; xygomatic breadth 59; 

 length of molar series on alveoli 17. 



Didelphis yucatanensis cozumelae subsp. nov. 



Type from Coxumel Island, Yucatan, No. 108,498, $ ad., U. S. Na 

 tional Museum, Biological Survey Collection. April 16, 1901. E. W. 

 Nelson and E. A. Goldman. Original No. 14,700. 



