KEY TO GliNEHA,. XCIX 



II. Molarifonii teeth inulticus|iidfite, loTrer 

 canines strongly proclivous (crossing- 



upper canines at nearly rifjht angles) III. IIARPYIO- 



I'remaxillaj co-os.si!ietl in front ; incisors j — ; IL il'^lilA-r., p. / .*• . 

 (i' and i, lost), lov.'ev pair rudiuseu- 

 tary, uppei' canines bieuspidatej lower 

 canines tricuspidate and situ-ited close 

 together at extremity of nuibdible, cheek- 

 teeth ^ ; second finger clawed, tail absent, 



tibia uuusiially short. [1 species: Philip- [p. 7i).). 



pines.] , .'{5. Harpi/imii/rferis *, 



" Knj/ " to the (jenera, husrd cniirelij on dcntid atul cmnidl 

 characters. 



Ill the subjoined artificial "key" to the genera such characters of the skull ami 

 dentition have been selected as are easily observable auil readily understood b\- 

 anybody witb an elementary knowledge of Maunuuiian osteology and odontoloy,y. 

 liut the siniplitication of the key bas liad to be l)Ouabt by sacrifice of the seriid 

 ariangenient of the genera adopted in this Catalogue. [A complete key to the 

 genera of Megachiroptera based entirely or chiefly upon their external characters is 

 an impossibility ; a large number of genera, even though they may belong to widely 

 distinct groups of tlie (Suborder, cannot lie discriininatud with certainty from eacli 

 other without an examination of tlie skull uiul dentition.] 



a. No lower incisors JS'jc/imeiu; p. 081. 



ii. One or two pairs of lower incisors. 

 a'. One pair of lower incisors. 

 «-'. One pair of upper incisors. 



<(■'. Cheek-teeth ".on each side llitrpi/iuiii/cfcris, p. 799, 



h^. Cheek-teeth i on each side /J.///,soj/./(/, ii. 118. 



' * 



t-. Two pairs of upper incisors (middle pjiir de- 

 ciduous in Notopteris). 



c'K Cheek-teeth '. on each side iWsoHmVici.s-, p. 790. 



(/•'. Cheek-teeth less than j, on earb side. 



<■(•' Cheek-teeth .. 

 o 



«\ Length of rostrum (orbit to tip of im.sals) 



greater than lachrymal breadth (across 



lower edges of hicbrymal foramina); 



111' (penultimate upper cheek-tooth) equal 



in size to yi^ (iintepenultiinate) UtijloctcuiKiii, p. 112. 



b''. Length of rosliiim much less than 



Ih( lirymal breadth : ni' much smaller 



than p' Balitiii/iftcrit:, \'. iibi. 



b'. Cheek-teeth t. 

 o 



(■■'. Hostruni long, strongly deflected: lowir 



incisors widely spaced ; reduced luimber 



of cheek-teeth due to loss of anterior 



premolar above and below (p' and p,) . . Xolapteris, p. 793. 

 '!■''. Ivostrum short, scarcely deliected ; lower 



incisors close together; ledured number 



of cheek-teeth due to loss of posterior 



molar above and below (m- and iii^). 

 <(''. I'ostorbita' foramen (through base of 

 postorbital process) large. 



* Ou the affinities of IIar/)i/iniii,rttr>f. sec p. SUiJ. 



