1863.] DR. J. E. GRAY ON THE SPECIES OF LEMUROIDS. 151 



the first and second hind toes shorter, each with an elongate curved 

 claw. Head short. Eyes and orbits very large. Limbs free, elon- 

 gate. Foot very long, as long as the shin. Tail elongate, hairy. 



Tarsius, Storr, 1780; Daub. 1792. 



Macrotarsus, Cuv. & Geoff. 

 Tarsier, Lacep. 



Cephalophacus, Swainson, 1835. 

 Hypsicebus, Lesson, 1840. 



Tarsius spectrum, Geoff.; Uahlbom, Studia, t. U (skeleton). 



Tarsius pallasii, Geoff. 

 Tarsius daubentonii, Audeb. 

 Tarsius bancanus, Horsf. Java, t. 

 Lemur tarsius, Erxl. 

 Lemur spectrum, Pallas. 

 Didelphis macrotarsus, Gmelin. 

 Hab. Borneo ; Celebes. 



Fam. in. Daubentoniad.e. 



Cheiromyidce, Bonap. 



Glirisimice, DaTilbom. 



Cutting teeth |, compressed, large ; canines none ; grinders ~. 

 Limbs free. The fingers and toes well developed. The fingers very 

 long and slender. The great toe broad. The index finger with a sharp 

 curved claw. Face short. Tail elongate, hairy. 



Daubentonia, Geoff. Decad. Philos. iv. p. 193, 1795; Dahl- 



bom, 1851. 



Aye- Aye, Lacep. 1799. 



Cheiromys, Cuvier, 1800. 



Chiromys, Illig. Prod. 1811. 



Cuvier refused to use the name proposed by Geoffrey, because it 

 was given in honour of a person ; but as this rule has not been gene- 

 rally observed, the objection ceases to be operative. 



Daubentonia madagascariensis, Geoff. ; Dahlbom, Studia, 

 p. 236, t. 12. B.M. 



Aye-Aye, Sonnerat, Voy. Ind. ii. p. 138, t. 76. 1782. 



Sciurus madagascariensis, Gmelin. 



Cheiromys madagascariensis, Geoff. 1803; Owen, Trans. Zool. 

 Soc. 1863. 



Hab. Madagascar. 



Fam. IV. Galeopithecid^. 



Cutting teeth |, the upper middle small, side one compressed, 

 lower shelving, pectinate ; canines ^, like the molars ; grinders -.—^^ 

 Limbs and tail united by a membrane covered with fur. Limbs 



