842 Mil. A. UtVERIDGK: LIST OF THE JVIZAIIDS 



As brevity is so essential in a key I have omitted lists of 

 bibliiiyTiiphical references, giving in the case of those 50 species 

 appealing in the 'Catalogue of Lizards' the volume and page 

 reference of that work only, in the case of those subsequently 

 descri))e(l only the reference to the publication in Avhich its 

 description first appeared. 



Tlie synonyms, wliich nre also numerous, have been omitted lor 

 the same reason, and only a few gi\'en of recent date which may 

 not be generally known. 



With tl>e exception of the generic keys for the (jeckonida; and 

 Lacertidie, 1 have been able to arrange my keys according to 

 chnraeters of taxonomic value, so that the genera or species 

 fall into their natural order. In the two generic keys men- 

 tioned this Avas not possilde without making thera unduly 

 cumbersome. 



Synopsis of the Families. 

 I. Upper suvface of bead with seiiles or granular tubercles. 



A. Tongue short with villoso papillie. 



No movable eyelids; dentition pleurodont Geciv:oniv>.t; 



Movable C3'elid.s ; dentition acrodont AciAMiD-i;. 



B. Tongue long, smooth, deeply bitid, sheathed at base ... VAHAMn.ii. 



ir. Upper surface of head with largo or symmetrical shields. 



A. Tongue with villose papillfo ; femoral pores Zonueum;. 



I?. Tongue witii scale-like imbricate papilla) or oblique jilicic. 



Hody vermifoi-m ; scales .soft, squarish, not iudn-icate. Ajri'ii isi!.i:m i i>.i;. 

 No bony jdates under the scales; femoral pores 



usually present Lacuktii).!;. 



Houy plates under th(! scales; a lateral fold; femoral 



jiores present (iBURiioy.M'iUD.i;. 



Bony plates under the scales ; no lateral fold ; no 



femoral pores ; eyes distinct SciNt;ii>,n, 



Hony plates under the scales ; body vermiform ; eyes 



coiu;ealed beneath skin Anehtkopid.k. 



Family G K c f o n i d jr. 



Ten genera. 



I. Digits not, or b\it slightly dilated. 

 A. Pupil vertical 



No pores titcnoducti/ln>i. 



Prceanal pores Ihinocnem is. 



15. Pupil round Ooiuitodes. 



II. Digits dilated. 

 A. I'upil vertical. 



1. Digits with a strong claw. 

 a. Sub-digital plates divided. 



Digits dilated at apex only, not at base Diplodac/j/Zns. 



Distal phalanges compressed Jtcmidacti/hia. 



h. Sub-iligital plates undivided. 

 Thumb and inner toe clawless FlatyphoUs. 



