VTKHol'US. g5 



species of this group, viz. I>t. insularls aud jJi<>-mY/,hah(.^, C"uroli„e 

 Islands, and Ft. laicopten'S, J'hilippines, while preserving most of 

 the pselaphon characters in skull and dentition, show a remarkable 

 decrease in the size of the teeth, and in these species the short and 

 heavy rostrum of a Pi.jyseJnphon is combined with a normal or evea 

 rather weak coronoid process: similarly in certain peripheral forms 



Fig. 8— A, tjpicnl Pteropine mandible (Pf. hi^pomefanus iome^i qj 7 U '), . 



see text p. 62. B. vnandible of a spec.es with short rostrum,' Leav; 



r Q">"o^'f^ ""'^ steeply ascending coronoid process (Pt. psell 



phon 92.2AI) ; test p. 63. C, n>anclible of a species with exces^i/. y 



weak clieek-teeth {Pt. mipiilatiis, 62.6.4.2) ; text p. 63. 



All figures J. 



of the lomhocemls group, viz. Pt. roJricemis, Kodriguez, and molos- 

 »i,nt,, Caroline Islands). Hut any essential modifications of the 

 skull, other than those briefly referred to abov(s *lo not occur iu 

 tlijs genus. 



Dn^titioa (figs. G, f), 10).- I' ^ ' P' ''' P' °^' °^"' x •^-•'4 * r 



1- , 'i'.iCp, p p m, m,, m, '"* • P- 



rudimentary, deciduous ; p„ m^, and m^ much reduced in size. 



* Individual abnormalities in the tooth formula appear to be exceedinalv 

 r«re „, all spec.es of P/..o;„„., except Pt.,capuk,tus (a secies cbara'tSSv 



d»-ek-..e.h obht.rated), and va.,p;,n,. (cio.,ely ■A\[J io yiy.utca.,. 0?^ 



F 



