230 



PEEAMELIDa;. 



d. Sides of rump more or less distinctly 

 striped. 

 e^. Tail only dark above for its basal 

 incb. Hind foot more than 65 



millim. long 10. P. gunm, p. 245. 



/^- Tail dark above for its whole length. 



Hind foot less than 60 miUim. long. 11. P. botigainmllei, ^. 2iQ. 



II. .Ceaniai, Chaeactees. 



A, BullsB large, pear-shaped. Incisors |. 



a. Molars small and narrow'; molars ^-' 



11 millim. or less ; m.* without or 

 with a very small posterior heel. 

 Coronoid process slanting markedly 

 backwards 



b. Molars large and broad: molars ^-' more 



than 11 millim. ; m.* with a large 



and distinct posterior heel. Ooronoid 



process upright. 



a^. Molars very large and square, filling 



up the V-shaped spaces between 



them 



b^. Molars more triangular in section, 

 with V-shapedspaceabetweenthem. 



B. BuUsB small, hemispherical, often more 



Qr less imperfect. 



c. Incisors 1 Bullae minute, generally 



imperfect. Ooronoid process broad, 

 its edge convex in front. Lacrymal 

 bone rounded externally. 

 c^. Tip of premaxillse to orbit move 

 than 38 millim. I.* about equal 

 to i.'' and i.' Molars light, trian- 

 gular in section 



d'^. Tip of premaxillse to orbit less than 

 36 millim. I.* decidedly narrower 

 than i.^ or i.' Molars broad and 

 rounded 



1. P. obesula, p. 231 



2. P. macrura, p. 234. 



3. P. moreabyensis, p. 235. 



d. Incisors 1 



4. P. doreyana, p. 236. 



5. P. cockerelli, p. 238. 



Lacrymal bone rounded externally. 

 Coronoid process broad, its edge 

 convex in front. 

 a^. Basal length more than 65, palatal 

 length more than 45, molars '-' 

 more than 11 millim. 

 a'. Molars ^-' from 12 to 13 mil- 

 lim. Palatal length less than 



60 millim 



4'. Molars '-' 14 millim. or more. 

 Palatal length more than 60 



millim 



V. Basal length less than 65, palatal 

 length less than 45^ and 

 molars '^'■^ less than 11 millim. 



6. P. raffrayana, p. -239. 



7. P. broadbenU, p. 240. 



8. P. lonffibaudata, p. 241. 



