454 REPORT OF NATIONAL MUSEUM, 1898. 



III. Digits not or but slightly dilated at the base, the two or three distal joints 



more or less compressed and nugnlarly bent, inferiorly with a series 

 of transverse plates; all the digits clawed. 

 A. Claw between two scales, a smaller superior and a large latero-inferior. 



Pnpil vertical ; tail fragile (hjmrwdactijlHS Spix. 



Pupil vertical ; tail very slender, not fragile A/jamui-a Blanville. 



Pnpil round; body not depressed; tail compressed Pristnriis Riipp. 



Pupil round; body more or less depresseil ; tail not compressed. 



Gonatodes Fitzinger. 



AA. Claw between three scales, a smaller superior and two large latero-inferior. 



Upper and lower eyelids well developed, conniveut; ungual scales forming 



a largo compressed sheath ^■EluroaaurHs Boulenger. 



No compressed ungual sheath TIetcronota Gray. 



IV. Digits dilated at the apex, which is furnished inferiorly with two plates sepa- 



rated by a longitudinal groove. 

 Digits not dilated at the base, clawed, the distal expansion covered above Avith 



scales strongly differentiated from those of the basal part. 



rinjllodacti/lus Gray. 



No claws Ebenaria Poettger. 



Digits not dilated at the base, clawed, the distal expansion covered above with 



small tubercular scales similar to those on the basal part. 



DipJodactyJus Gray. 

 Digits dilated at the base, the basal expansion anteriorly with paired oblique 



lamelhe (Ednra Gray. 



Penultimate joint with an expansion bearing two plates exactly similar to the 



distal Calodaclylus Beddart. 



V. Digits dilated at the apex, which is furnished inferiorly with two diverging 



series of lamelLe; digits clawed, the claw sessile and retractile in the 

 anterior notch of the distal expansion I'tyodaciylufs Cuvier. 



VI. Digits entirely dilated, with a double series of lamellse. inferiorly, clawed, the 



claw sessile and retractile in the median groove. Tliecadactylus Cuvier. 



VII. Digits dilated, the distal phalanges comi)ressed. 



A. The distal joint long, free, rising from within the extremity of the digital 

 expansion. 

 Infradigital plates in a double series; inner digit with (■om])ressed clawed 

 phalanx ; dorsal lepidosis composed of small scales or tubercles. 



Eemidactyhis Cuvier. 

 Infradigital plates double; dorsal scales large, imbricate. 



Teratolepis Giinther. 

 Infradigital plates in a simple series; inner digit with compressed clawed 



phalanx, similar to the other digits rhyUopizus Peters. 



Infradigital plates in a simple series; inner digit clawed, the claw retractile 



laterally, inferiorly with a circular plate Artstdlifjer Cope. 



Infradigital plates in a 8im])le or double series; inner digit clawless. 



Geltyra Gray. 

 Infradigital plates in a simple series; inner digit rudimentary, of fore limb 



clawless, of hind limb clawed Perochirus Boulenger. 



AA. The free distal joiut at the extremity of the digital expansioii ; a double 

 series of infradigital lanielhe. 

 Pupil vertical; digits narrow at tlie base, the dilatation strong and dis- 

 coid, the distal Joint long and slender; inner digit rudiiiiental. 



Spaihoscalahoies Boulenger. 

 Pupil round; eyelid distinct all round the eye; digits narrow at the base, 

 the dilatation strong and discoid, the distal joiut free; inner digit 

 rudimental, with strong, very distinct claw. 



Micraacaluhotes Jiouleuger. 



