1872.] DR. J. E. GRAY ON THE LEMURINA. 849 



Brain-case oval, nose rather produced, once and a half as long 

 as the diameter of the moderate orhits. The upper cutting-teeth 

 on the outer part of the sides of the prominent iutermaxillaries. 

 Lemurina. 



4. Lemur. Wrist with a narrow bald line and pad above. Tail 



with black rings. 



5. Prosimia. Wrist entirely hairy. Tail not ringed. Head with- 



out a ruff. 

 G. Varecia. Wrist entirely hairy. Head with a ruff. Eyebrows 

 and skull very prominent. 



B. The ears short, rounded, covered externally with close appressed 



hair, and naked on the edge. Tail cylindrical or conical. The 

 cutting-teeth on the middle of the sides of the prominent inter- 

 maxillaries, with a moderate central space ; the middle generally 

 the largest. Cheirogaleina. 

 * Brain-case oval. Nose contracted in front of the orbit, scarcely 

 narrower in front. 



7. Opolemur. Tail thick, tapering towards the end, and covered 



with rather longer hair at tip. (Fig. 1, p. 854.) 



** Brain-case subglobular. Nose broad, tapering in front, a little 

 longer than the diameter of the orbit. 



8. Phaner. Inner upper cutting-teeth very large, projecting up- 



wards and forwards. Tail with soft diverging hair, 

 y. Cheirogaleus. Inner upper cutting-teeth moderate. Tail with 

 woolly hair. (Figs. 2 & 3, pp. 855, 856.) 



*** Brain-case subglobular. Nose broad, tapering in front, 

 shorter than the diameter of the large orbits. 



10. Mirza. Inner upper cutting-teeth moderate, converging. Tail 



with straight rigid hair. 



11. Azema. Inner upper cutting-teeth nearly equal, erect. Tail 

 with soft hair. (Fig. 4, p. 856.) 



1 2. Murilemur. Inner upper cutting-teeth twice as long and large 

 as the outer, which are very small. Tail with short soft hair. 



C. The ears very large, naked, plicate. Tail hairy, often bushy. 



The brain-case globular, thin. Nose tapering in front. Upper 

 cutting-teeth equal, cylindrical. Galagonina. 

 f The upper cutting-teeth strong, in an arched line, shelving and 

 near together in front. 



13. Sciurocheirus. Intermaxillaries thickened and convex above 

 on the upper part of the upperside. (Fig. 5, p. 858.) 



ff The upper cutting-teeth very slender, in a nearly straight line, 

 close to the canines, erect, leaving a large central space. 



14. Hemigalago. Intermaxillary bone large and produced above 

 on the underside of the nose-hole, convex below. 



15. Otolicnus. Intermaxillary bone moderate, nearly erect above. 



(Fig. 6, p. 859.) 

 Proc. Zool. Soc— 1872, No. LIV. 



