."(I RorsETTrs LAXOsrS. 



sloTulor ; ]vrenia\illaiics in simple contact (uot co-ossiiiecl ), and 

 produced distinctly more forward than in li. Itcichi; incisive 

 foramina, therefore, longer and broader than nsual in the genus. 

 Owing to the strong reduction in the size of the cheek-teeth, the 

 temporal muscle is weaker, the teraporal fossa markedly shorter 

 and narrower than in B. Jeachi and aii</oJensis, the rami of the 

 mandible slenderer, the coronoid process somewhat lower, much 

 slenderer, and directed considerably more obliquely backward, 

 the condyles smaller, the angular process less projecting. 



Ti-elh "(fig. 3). — Chief character : the extremely narrow cheek- 

 teeth. Upper incisors smaller than in li. leuchi and mvjolensis; 

 i'-i' rather more separated than i'-i' ; owing to the projection of 

 the premaxillaries, the distance i'-c is as great as between c and ]/'. 

 p^ as small as an upper incisor, situated nearer to the canine than 

 to p''. p''-m^ and p,-!!!^ lower, shorter, and very much narrower 

 than in 11. leachi and angoUnsis: width of p'* only about one fifth 

 (in all other species about one third) the distance between inner 

 sides of p''-p''. m' equalling or slightly exceeding p'' in length, 

 m'- about one third the bulk of m'. i^ in cress-section distinctly 

 larger than i,. p^ twice or three times the bulk of an outer lower 

 incisor. m„ comparatively smaller than in R. leachi and auqoUnsis : 

 length about half that of m^. m^ elliptical in outline, about two 

 thirds of m,. 



Falate-ridyes. — Examined in one specimen only: 3-f-4-f 1 ; 

 arrangement as usual (see p. 19), except that the 5th ridge termi- 

 nates closely behind m* (not at m" or between m' and m"), and the 

 ()th ridge is incomplete, not reaching the lateral margins of the 

 palate. 



/frt^-s^—Similar in length to those of 7?. leachi, but rather 

 narrower; outer margin slightly, but distinctly, concave below tip, 

 the tip itself narrow, rounded. Antitragal lobe obsolete. 



Wings. — Inserted on base of second toe. 9-10 long vertical 

 fasciae in the lateral membrane, viz. 2 postanconeal, 7-8 preancoiieal 

 (two alcoholic specimens examined). Wing-srructure essentially 

 as in li. leachi, except that the poUex is longer (index 400, against 

 361 in /f«c7/i),and the second phalanx of the tiftli digit considerably 

 longer than tlie first phalanx. See wing-indices, supra, p. 20. 



Far. — Face short-haired. Fur on body unusually long and 

 coarse. Above, proximal two thirds of forearm densely liaired ; 

 notopatagium and plagiopatagium next to body, the whole of the 

 tibia and the interfemoral, a narrow inner line excepted, furred, 

 the hair being particularly long and coarse on the proximal half 

 of the tibia and the interfemoral ; upperside of feet covered with 

 short hairs. Below, proximal two thirds of forearm, plagiopatagium 

 next to body, tibia almost to the ankle-joint, and interfemoral, a 

 narrow inner border excepted, clothed with long woolly hair. 



Colour. — Back and rump dark brown, approaching seal-brown, 

 inclining to bistre on the posterior part of the rump, interfemoral, 

 aiul tibia; crown rather darker than back ; nape of neck between 

 br()Ccoli-browu and hair-brown ; the wliole of tiie underparts dark 

 urevisli drab. 



