80 MtrsTELir^. 



5. Gymnoptts. False grinders I . Head elongate, narrow. Feet 



rather naked, b^d beneath, between, and rather behind 

 the pads ; toes largely webbed. Soles hairy behind. Body 

 slender. 



B. Subplantigrade. Soles and between the pads hairy. Body stotU, 

 Tail short, bushy. Anal glands none. False grinders f . 



6. Gttlo. Tubercular grinder oblong, transverse ; flesh-tooth elon- 



gate, with a small subanterior inner lobe. 



0. Plantigrade. Soles of hind feet bald, callous. Body elongate. Anal 

 glands distinct. False grinders f ; tubercular gririder oblong, 

 transverse. 



7. Gaieba. Tail elongate. Soles of hind feet with a central 



longitudinal depression behind, and obscurely divided into 

 four large pads in front. Heels hairy. 



8. Geisonia. Tail short. Body slender. 



Tribe 2. Lutrina. Head depressed. Feet normal, rounded ; toes 

 webbed. Tail thick, tapering, depressed. Tubercular grinder 

 oblong, transverse. 



A. Tail comical, tapering, entirely cornered utith hair. 

 t T?te palms and soles of the feet bald between the pads. 

 * The muzde hairy ; only the thin margin of the nostrils bald. 

 9. Babajtgia. daws rudimentary, blunt. Toes rather elongate. 



** TTte muzzle hairy between the nostrils ; upper and front edge 

 of the nostrils bald. 



10. LoNTEA. Toes rather elongate, well webbed ; claws sharp. 



*** The muzzle bald, band-like between the front and upper edge 

 of the nostrils. 



% Foot oblong ; toes thick, webbed to the claws, sharply clawed ; 

 pads of toes and palm large, close together. 



11. Ltjtba. Orbit of skuU defined by a conical process behind. 



Head and skull elongate. 



12. Ntjteia. Orbit of skuU defined by a conical process behind. 



Head and skuU short, broad. 



13. Ltjieonectes. Orbit of skull scarcely defined behind. Claws 



acute, strong. Head and skuU elongate. 



XX Foot oblong; toes rather slender, free at the end, bluntly or imper- 

 fectly clawed; pad of palm large, of toes slender, separated. 



14. AoNTX. Orbit defined behind. SkuU broad, depressed. 



