RousnTTUs AXGni.KNsis. 0:3 



Ticlh (tig. 4). — c-p'' aiifl i>''-])', as well us c p, and \>-\\ more 

 broadly separated than iii li. Icnchl. p' and pj more reduced in 

 size, p, in cross-section only equalling or slightlj' exceeding a 

 lower incisor. Molariform teeth, above and below, peculiarly 

 short and broad, in the upper jaw almost squarish. 



Pulate-ridi/es. — H-\--i-\-2 (three of four alcoholic specimens) or, 

 the fourth ridge being not interrupted in the median line, 4-|-3-|-2 

 (one specimen). 



Ears. — Outer margin of ear-conch very slightly attenuated below 

 the tip, the tip itself broadly rounded off; anr.itragal lobe well 

 developed, triangular, subacute. 



Wiiir/s. — Inserted on back of second toe. 12-15 long vertical 

 fascise in the lateral mcmbratie, viz. 3—5 postanconeal, 8-1 1 pre- 

 anconeal (five alcoholic specimens examined). Forearm shorter 

 than in li. leachi : 7>S-83-5 mm., against 89-99. All digits pro- 

 portionally considerably longer than in R. leachi : itidex of pollex 

 440 (361 in leac^n) ; second digit (index 786) decidedly longer than 

 third metacarpal (index 705 ; in leachi respectively 652 and 644) ; 

 second phalanx of fifth digit as a rule longer than first ])halanx. 

 For further details see wing-indices, supra, p. 20. 



Tail and hind limb. — Tail shorter than in R. leachi : S'5-13 mm., 

 against 15-19. ],ower leg much shorter: 2S^-33 mm., against 

 40-42 in R. leachi. 



Far. — Ears naked posteriori)', except at base. Face in front of 

 and below eyes much more strongly haired than in R. leachi. 

 Fur of body much longer, softer, more silky. Distribution of 

 fur on humerus and forearm, above and below, as in R. leachi. 

 Notopatagiuni densely haired. Upperside of femur, tibia, and inter- 

 femoral (a narrow portion next to caloar excepted) long-haired. 



Colour. — Different from that of li. leachi : general aspect, chest- 

 nut above, dark wood-brown below. 



Adult male. — IJack and rump rich brown, approaching chestnut 

 or burnt-umber. l)ase of hairs light drab or wood-brown, sometimes 

 with a tinge of fawn ; crown dark grizzled brown ; fur on forearrr., 

 sides of back next to membranes, interfemoral and tibia usually of 

 a brighter tinge, approacliing mars-brown or russet. Breast and 

 belly wood-brown ; throat and foreneck dark mars-brown tinged 

 with fawn. — The bleached coat ( cj ad., liuwenzori East, ilareh 13, 

 no. 6.12.4.3) presents a very different aspect : back and rum]) 

 rich tawny olive : crown and occij)ut dark raw umber ; breast and 

 belly as above : throat and foreneck cinnamon. 



Adult female. — Similar to the male, but throat and foreneck 

 scarcely differing in colour from the i-est of the underparts. 



Mea.'<iire))ieitl.s. On p. 54. 



Rantje. Angola, north-westward to Cameroon and Togo, r-ast- 

 ward through the Congo Basin td Uuwenzori, and Oerium Kast 

 Africa. 



('oti//)f.s in the Lisbon and British Museums. 



lienuirl-s. — R. ant/olcnsi.^, the type of the subgenus Lissoiu/cteris, 

 is the most aberrant species of Roasellns ; in none of its peculiar 

 characters is it approached by any other species of the genus. In 



