470 DESCRIPTION OF CAPROMYS HRACIIYURUS TIIORACATUS. 



The feet are clothed with blackish 

 hairs, short and stiff ; the soles are blaok, 

 roughened with rasp-like warts. 



Feet clothed with short ringed hairs, 

 like those of the hack, hut darker. Hairs 

 of the proximal and inner portion of the 

 hind feet ochreoas yellow. Toes, black- 

 ish brown. 



The same. 



The same; not thumb-like. 



Muffle dark brown. 



The thumb of the fore paws is a rudi- 

 mentary tubercle, but armed with a dis- 

 tinct blunt nail. 



The great toe of the hind foot set far 

 back, separable, ami thumb-like. 



Ears blackish gray ; short ami fleshy. 



Muffle (or broad Hat termination of 

 snout) blackish, clothed with a glisten- 

 ing pile of very short down, the extreme 

 margins of the dosI rils alone being naked. 

 Mustaches long. 



Incisors white : molars with two deep 

 oblique folds externally and one inter- 

 nally. 



Tail still', taper, with rounded point; 

 scaly, with thick, short, bristly hair, 

 which is black on the upper surface, 

 grayish-brown below; the base of the 

 tail is nearly naked. 



The distinguishing features in the coloration of the Capromys b. thoracatus, as ap- 

 pears from this comparisou, are the white band across the breast, the gray throat, and 

 the brown and ochreous (not blackish) hind feet. In size and proportions these speci- 

 mens agree very closely with the typical form. 



Mi iisitn ments of C. h. thoracatus, Xo. 15S9S, l~. S. National Museum, Little Swan Island, 



Male. 



The same ; hairs dark brown, very few 

 on the lower surface. 



mm. 



Length of head and body 3-11. 



Length of hind foot 65. 



Length of fore foot 40. 



Length of ta 1 45. 



Height of ear from occiput 



Height of ear from base of outer margin 



Greatest breadth of ear 



»im. 

 18. 



Mi inurements of two skulls of Capromys brachyurns thoracatus. 



Measurement. 



22691 rf 



22692 



Greatestlengthof8ku.il 



Basicranial length ( Hen set) 



Greatest breadth of skull from malar to malar 



Least breadth between orbits 



Length of nasals 



Length of frontals 



iof uppei molar series 



Distance between inner margins of anterior tipper molars. 

 Distance between inner margins of posterior upper molars 



Distance from anterior upper molars to incisors 



Length of lower molar series 



Skull broken. 



