29G rxEEorus insularis. 



Teeth. — Upper incisors relatively large, slightly spaced ; posterior 

 basal ledges unusually well marked. Lower incisors typical, 

 slightly spaced, i^ not larger than usual, about twice the bulk of i,. 

 Cingulum of upper and lower canines excessively broad ; in upper 

 canines forming a broad semicircular ledge at inner and posterior 

 base of crown with projecting rim of ledge subdivided by shallow 

 notches into a number of rounded tubercles ; in lower canines 

 much broader at posterior than at inner base of crown ; crown of 

 upper and lower canines, viewed in profile, recurved with cingulum 

 distinctly visible at i)osterior base as a sharply projecting ledge or 

 cusp ; vertical groove on front face of upper canines deep and 

 broad, terminating above tip of tooth, p' spiculiform, present 

 in all adult skulls examined. Upper postcauine tooth-rows 

 subparallel, ?'. e., less converging postero-anteriorly than usual. 

 Pj unusually large, twice to twice and a half the bulk of i^. 

 Posterior basal ledge of p^ strong and w^ell marked off from tooth 

 postero- externally ; corresponding ledge of p* somewhat ill-defined ; 

 antero-internal base (cingulum) of j/ and p* more developed than 

 usual, forming a low, distinctly projecting ledge in front of inner 

 main cusp of teeth. Posterior ledge of p.^ extremel}' strong, 

 forming a relatively long ledge, sharply marked off from base of 

 outer main cusp; corresponding ledge of p^ shorter, but well- 

 defined ; antero-iufernal cingulum of Pg and p^ developed into a 

 low, distinctly projecting basal ledge, m" subequal to an upper 

 incisor. \n^ subequal to i^, much smaller than p^. 



Palate-ridges. — 5-f-4-l-2, approaching 64-3-|-2, owing to the 

 sl:cth ridge being only very slightly divided in middle. First 

 ridge terminating laterally at front of canine ; second at back of 

 canine; third at front of p^ ; fourth at back of p'; fifth at back of 

 p^ ; sixth at front or middle of m^ ; seventh at front or middle of 

 m' ; eighth and ninth behind m^ ; tenth and eleventh situated near 

 palation bordijr. 



Ears. — Moderate, exposed, not reaching back of eye. Inner 

 margin convex from base to tip; outer margin convex in lower 

 half or two-thirds, flatly concave or nearly straiglit in upper half 

 or third ; tip of conch rather broadly rounded off'. 



Winf/.s. — Membranes arising withiu about 15 mm. of each other 

 from sides of back. 



Interfe moral. — Extremely short or undeveloped in centre. 



Fur. — Moderate; soft, silky, and directed posteriorly on back. 

 Approximate length, back 14-16, mantle 17-18, belly 15-17 mm. 

 Least width of furred area of back about 27-30 mm. 



Distal half of humerus, the whole of the forearm and tibia 

 practically naked above. Underside of humerus and tibia naked. 



Colour. — Whole series examined : — Back and rump a dark shade 

 of Prout's brown, sometimes approaching seal-brown, in some 

 specimens thinly, in others scarcely perceptibly sprinkled with 

 silvery greyish-wliite hairs. Base of fur nearly seal-brown. — 

 centre of breast bright buff", forming a more or less well-defined 

 patch contrasting with dark sides of breast and belly. The size of 



