1904.1 



NATURAL SCIENCES OF PHILADELPHIA. 431 



ed, the longitudinal curve low, sagittal crest distinct and sharp; inter- 

 orbital region sHghtly constricted; zygomata prominent, shghtly more 

 expanded posteriorly than anteriorly. Rostrum attenuate, the ante- 

 rior width (taken behind the canines) not less than the interorbital 

 width, the dorsal outhne continuing, but less distinctly, the regular 

 descending course from the siunmit of the brain-case; palate shghtly 

 vaulted, posterior portion with parallel sides, the median cleft with a 

 sub-truncate apex; pterygoids very slender apically, moderately 

 flaring. Mandible rather heavy, the rami strong ; ascending rami stout, 

 the coronoid process acute-angulate, condylar process broad but low; 

 angle strong, recurved, unguical in character, distinctly bent laterally.' 

 Teeth.— Medi&n pair of upper incisors slender, projecting, with a 

 narrow cutting edge; lateral upper incisors small, low, crowded, the 

 external face distinctly channeled ; upper canines projecting anteriorly, 

 shghtly recurved; first upper premolar elongate-elliptical in basai 

 outline, advanced upon and crowding the canine, cusp anterior, low 

 and followed by a jagged cutting edge and distinct cingulum; second 

 upper premolar oblong in basal outline, anterior section narrowed 

 considerably, cusp distinct, subcaninif orm ; first upper molar sub- 

 quadrate, the paracone-metacone ridge distinct and with the two arms 

 distinctly acute at the metacone, protocone as a low blunt ridge, hypo- 

 cone almost obsolete, cingulum very weak; second upper molar similar 

 to the first in character, but larger, distinctly quadrate and with the 

 paracone more apparent than in the first molar; third upper molar 

 strongly transverse and equal to the other molars in width, paracone 

 strongly developed. Lower incisors narrow, compressed, strongly 

 crowded between the canines, cutting edges faintly bilobate; lower 

 canines rather strongly recurved; first lower premolar subquadrate in 

 basal outhne, advanced upon and strongly crowding the canine, cusp 

 rather low and broad; second lower premolar very similar to the first 

 premolar in basal outline but smaller and narrower, cusp rather sharp 

 and rectangulate, cingulum quite distinct; third lower premolar sub- 

 quadrate in basal outline, broad posteriorly, equal to the second pre- 

 molar in size, cusp and cingulum much as in the second premolar; 

 lower molars all longitudinal in basal outhne, the third smaller than 

 the others, the para- proto- metaconid group less distinct in the first 

 than m the others, the hypo-entoconid group weaker and less distinct 

 m the third than in the other molars. 



Measurements.—Adult male (from dried skin): Length of head and 

 body 62 mm.; ear 25; tragus 8.1; forearm 52; thumb 14.5; third 

 digit 92.5; tibia 21; foot 15.5; greatest width of ear 17. 



