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bulletin: museum of comparative zoology. 



General Characters. — Size large; tail as long as head and body, not 

 tufted. Dark hairs prevailing dorsally; backs of hands and feet buff. 

 Upper incisors grooved; pterygoids slightly expanded proximally, 

 their bases extending forv\^ard anterior to the posterior median edge 

 of the palate. 



Description. — Top of head from nose to crown, nape, back, and 

 dorsal surface of the tail a mixture of black and oehraceous buff, the 

 former predominating. The individual hairs are slaty for the basal 

 two thirds, then either black-tipped or with a subapical ring of oehra- 

 ceous buff and a black tip; on the sides of the muzzle, cheeks, sides of 

 body, forearms, and hind legs the black-tipped hairs become largely 

 suppressed giving a nearly clear oehraceous buft' (Ridgway, 1886) 

 tone to these parts. Metacarpal and metatarsal areas clear buff, toes- 

 white. The ears are clothed with minute blackish hairs externally, 

 and sparsely covered internally with short pale buff hairs. The 

 entire ventral surface of the head and body (including the upper lips) 

 and the limbs are covered with hairs white to their bases. The tail 

 is sharply marked off by its oehraceous buff color on its basal half be- 

 low; the rest of the under surface is darkened with short black hairs 

 which predominate towards the tip. The terminal hairs are slightly 

 the longest but do not form a tuft. 



Skull. — The skull is that of a mature animal but the teeth are only 



slightly worn. In this condition the 

 middle lamina of the first upper molar 

 shows a slight central contraction mark- 

 ing off an inner and an outer portion. 

 The upper incisors show a well-marked 

 groove nearer the outer side, thus differ- 

 ing from the liodon group which this 

 species equals in size. Anterior palatal 

 foramina 3 mm. long, reaching from the 

 level of the center of the first molar to 

 the back of the second. Posterior pala-- 

 tal foramina reduced to two minute per- 

 forations just posterior to the level of 

 the last molars. The conformation of 

 the pterygoids is different from that of 

 other species to which I have had access. 

 Their bases are slightly divergent, and 

 included within a notch in the palatal bones between the median 

 projecting point and the posterolateral extensions, which are rather 



Fig. 2. — Tatera flavipes, palatal 

 region. X 3. 



