196 PROCEEDINGS OF THE ACADEMY OF [Feb., 



brown, the hair with a silvery or wliitish suffusion; membranes and 

 muzzle mars-brown, the latter portion rather pale and tending toward 

 cinnamon. Rufous phase: above dark mars-broT\Ti, the hair pale 

 at base ; below with the hair between vandyke-brown and sepia basally, 

 the apical portion light and rather silvery in character; membranes a 

 little paler than in the brown form. 



Skull. — Robvist and strongly built. Brain-case moderately ele- 

 vated above the rostrum, somewhat depressed longitudinally, but 

 rather evenly arched transversely; auditory bi-illse rather prominent; 

 zygomata little cm'ved, simple, greatest width posterior. Rostrum 

 rather high, appearing somewhat compressed when viewed from the 

 anterior aspect, merging into the brain-case with a very slight angle ; 

 nasal depression slight, shallow; palate rather deeply excavated, pos- 

 terior extension short and with the cleft acute-angulate. Mandible 

 rather slender, symphysis and anterior portion hea\y; ascending 

 ramus low; angle bluntly and slightly recurved. 



Teeth. — Median upper incisors quadrate in outline, very obscurely 

 bilobate; lateral upper incisor circular in basal outline and touching 

 the anterior margin of the incisor, cusp very low; upper canine conoid, 

 very slightly recurved ; fost upper premolar reniform in basal outline, 

 cusp rather low; second upper premolar trigonal in basal outline, cusp 

 moderately liigh, caniniform, internal cingulum rather strongly marked ; 

 first and second upper molars with the proto-hypoconoid ridge well 

 marked, the hypocone considerably the lower. Lower median incisors 

 distinctly trilobate, laterals bilobate or obscurely trilobate, all short 

 and rather crowded; lower canines somewhat divergent and slightly 

 recurved; first lower premolar rather oblong in basal outline, cusp 

 rather acute; second low^er premolar small, circular and crowded be- 

 tween the first and third premolar and forced to the internal side of 

 the toothrow, which when viewed from the labial aspect exhibits Uttle 

 or no space between the first and third premolar; third lower premolar 

 compressed, elongate when viewed from above, the cusp erect and some- 

 what recurved with a slight anterior accessory cusp; low^er molars 

 similar in character to one another, the first the largest in the series, 

 the posterior molar with the entoconid very low when compared v ith 

 that cusp of the other teeth. 



Measurements. — Average of series of eight alcoholic specimens: 

 Total length 76 (73.5-81) mm. ; length of head and body 56.7 (53-60.5) ; 

 length of head 23.5 (22-25); length of ear 20.6 (19.5-21.5); length of 

 tragus 5.3 (4.5-6) ; length of forearm 53.5 (52-54) ; length of thmnb 8.2 

 (7.5-8.5) ; length of third digit 85.8 (84-87) ; length of tibia 19 (18-19.5) ; 



