ii\cnovomDM. V 



b*. P.* e-8 inillim. long. I.» small. 



Bullae sometimea swollen .... 2. Petbogale, p. 62. 

 c*. P.* small, rounded, constricted 

 in tlie centre, without internal 

 ledge. I.' very small and slen- 

 der, slanted obliquely forward. 3. Onychoqale, p. 72. 

 ¥. Bullae swollen. Canines present. 

 P.* large, not constricted, with 



internal ledge 4. Lagobchkstes, 



6°. Canines present. P.* much longer [p. 79. 

 than m.^ Bullae unswoUen. 

 c^. P.^ longer than m.' and m.^ com- 

 bined. Palate incomplete 5. Dokcopsis, p. 86. 



d^. P.* shorter than m.' and m." com- 6. Dendkolagus, 



bined. Palate complete [p. 92. 



6'. The two sets of incisors nearly parallel. 

 Incisors broad, flat-topped ; i.' smaller 

 than i.^ Canines absent 7. Lagostbophtts, 



b. Molars quadri-tuberculate, decreasing in [p. 100. 



size backwards ; m.* smaller than m.' 

 Canine present. Upper i.' decidedly 

 longer vertically than the other in- 

 cisors Subfamily Potoroinae. 



ci. Molars, especially m.^, oblong, much 

 longer than broad. Palate nearly or 

 quite perfect. P.^ with about 7 ver- 

 tical grooves. Canines large. Bullae 



unswollen ' 8. ^pypbymnus, 



d'. Molars quadrate, scarcely longer than [p. 102. 

 broad. Palate with large vacuities. 

 Bullae more or less swollen. 

 c". Upper p.* very large, with 7 or more 

 prominent oblique grooves ex- 

 ternally 9. Bbttonqia, p. 104. 



eP. Upper p.* with 6 or less shallow, in- 

 distinct, vertical grooves. 

 e'. Canine minute, the anterior pala- 

 tine foramen extending behind its 

 level. Grooves on p.* almost 



obsolete, 4 to 6 in number 10. Calopbymnus, 



/'. Canine well developed ; anterior [p. 114. 



palatine foramen not or barely 

 reaching backwards to its level. 

 Grooves on p.* shallow, 2 to 4 in 



number 11. Potobcits, p. 116. 



B. p.* above and below abruptly twisted out- 

 wards Subfamily Hypsiprynmodontinae. 



c. Canines present. Bullae small, swollen. 



Molars decreasing backwards 12. Hypsipeymnobon, 



[p. 123. 



