915 



GECKOTID.&. 



GECKOTID^. 



via 



1. Gymnodoctylia JfiliutH (Oyriodactyliu Ifiliusii, Gray). 

 1, a, the underside of one of its toes. (Dumeril.) 





The following is a synopsis of the genera and a list of the species, 

 03 given in the ' British Museum Catalogue,' 1845 : 



Synopsis of the Genera of Geckotida. 



I. Toes dilated, with 2 rows of membranaceous plates beneath, 

 under the dilated part. 



A. Last joint of the toes short, indexed, sheathed in the notch 

 between the front of the 2 series of plates. Claws 5-5. 



a. Toes dilated, ovate, with 2 series of transverse equal plates 



beneath. 



1. Thecadactyliu.'FoeB half webbed. Femoral pores none. 



Tail uniformly granular. 



b. Toes linear, truncated, middle of the toes with 2 rows of 



square plates beneath, the 2 terminal plates larger. 



2. (Edura. Tail subcylindrical, with square scales, unarmed. 



Toes all with 2 rows of small plates beneath. 



3. Slrophura. Tail cylindrical, with 2 rows of spines above, 



tip revolut*. The 2 middle toes with 2 rows, the rest 

 with 1 row of plates beneath. 



< Toes linear, truncated, middle of toes with a single series of 

 plates beneath, 2 terminal plates larger. 



4. Diplodactyltu. Terminal pair of toe-plates convex, 



rounded at the end. Back and tail granular, uniform. 



5. Phyllodactyliu. Terminal pair of toe-plates thin, square 



at the end. Back and tail tubercular. 



d. Toes slender, dilated at the end, with 2 diverging series of 

 plates beneath. 



6. Ptyodactylut.Toe free. Body simple. Tail round. 



7. Uroflala. Toes webbed. Tail and sides of the head and 



body fringed. 



8. Caudiverbera. Toes webbed. Tail and back with a 



membranous crest. 



I). Toes, last joint slender, compressed, elongate, produced, 



clawed, free from the dilated penultimate joints. 

 a. Thumb with a compressed clawed terminal joint, like the 



9. Hemidactylu*. Tail rather depressed, angular above, 

 with cross rings of spines, lower edge simple. Toes 

 free. 



10. Ve/ernnia. Tail rather depressed, angular above, with 



cross rings of spines, lower edge denticulated. Toes 

 half webbed. Skin of sides and limbs lax. 



11. Dorywra. Tail depressed, uniformly granular, denticu- 



lated on the edge. Toes free. Sides and limbs simple. 



12. Platyuru. Tail depressed, uniformly granular, denticu- 



lated on the edge. Toes half webbed. Sides and limbs 

 with a thin membranous expansion. 



1 '',. Leim-VLt. Tail cylindrical, uniformly granular, tapering. 

 Toes slightly webbed. Sides and limbs simple. 



14. Crounriu. Tail cylindrical, granular, with a festooned 



fringe on each side. 



&. Thumb with a compressed, clawless, terminal joint. 



15. Boltalia.Tom free. 

 HAT. HIST. DrV. VOU. II. 



c. Thumb without any compressed terminal joint, clawless. 



16. Peripia. Toes all free. 



17. Peroplua. Toes two middle united at their base. 



II. Toes more or less dilated, with a single series of transverse 

 plates beneath. 



C. Toes dilated, the last joint (only) compressed and rather 



produced or wanting, the plates beneath the toes membra- 

 naceous, smooth. 



a. Claws 5-5. Thumb with a compressed, free, clawed last 

 joint. 



18. Theconyx. Toes free, dilated. Sides simple. 



19. Pmtadactylua. Toes free, base slender. Sides simple. 



20. Platydactylus. Toes webbed. Sides with a margin. 



6. Claws 4-4. Thumb without any compressed, free, clawed, 

 last joint. 



21. Gecko. Toes free, last joint short. Back tubercular. 



22. Gehyra. Toes free, last joint rather elongate, very com- 



pressed. Scales granular. 



23. Amydoiaurm. Toes half webbed. Back granular. 



Limbs and body simple. 



24. Lyperosaurus. Toes half webbed. Back granular. 



Hinder edge of legs with a slight fold of thin mem- 

 brane. Tail with a slight fringe. 



25. Ptyc/iozoon. Toes webbed. Head, body, and tail with 



membranes on the side. 



c. Claws 2-2. All but the two middle toes without any 



compressed last joint. 



26. Twentola. Lower rostral shield very long. 



d. Claws none. Toes all without any compressed last joint. 



27. Phelsuma. Toes dilated, ovate. Tail rather contracted. 



28. Pacliydactylw Toes slender, short, apex rather dilated. 



29. Spltcerodaclylut. Toes slender, with a single rounded 



disc at the tip. 



D. Toes and thumbs clawed, slightly dilated below at the base, 



the two or three last joints compressed, angularly bent, the 

 membranous plates beneath the toes transverse, smooth. 

 a. Toes rather thick, tapering. Tail round. 



30. Naidlinug. Tail cylindrical, tapering, granular. Preanal 



pores in 2 or 3 cross series. Back granular. 



31. Eublepharis. Tail cylindrical, ringed with cross series of 



tubercles. Back tubercular. 



32. Homonota. Tail cylindrical, tapering, granular. Preanal 



pores none. Back scaly. 



33. Pritturut. Tail compressed, dentated above. 



J>. Toes elongate, slender, compressed, versatile, joints bent at 

 angle. 



34. Goniodactylui. Tail round, tapering, granular. Scales 



granular. Preanal pores none. 



35. Cyrtodactylus. Tail round, tapering, with rings of 



tubercles. Back with rows of tubercles. Preanal 

 pores in 2 parallel rows. 



36. Jleteronola. Tail round, tapering, with rings of tuber- 



cles. Back tubercular. Preanal pores in an arched 

 series. 



S P 



