64 MANUAL OF NATURAL HISTORY 



IT. SUB-ORDER. THICK-TONGUED LIZARDS (Pachy- 

 glossata). 



Tongue thick, convex, attached to the gullet at 

 the base. 



3. TEIBE. NYCTISAURIANS (Nyctisauria). 



Scales of belly small, rhombic, imbricate ; of back 

 and sides granular; tongue thick, short, convex, 

 slightly nicked; eyes nocturnal; eyelids circular, 

 not conni vent ; pupil linear, erect ; body depressed ; 

 toes sub-equal, lamellar beneath. 



24. FAMILY. Gekkoes (Gekkonidse). Body depressed, 



sometimes fringed on the sides ; pupil linear, 

 rarely round ; eyes nocturnal ; scales of belly 

 small, rhombic, imbricate ; of back and sides 

 granular; feet for walking; toes generally 

 dilated. 



4. TRIBE. STROBILOSAURIANS (Strobilosauria). 



Scales of belly small, rhombic, imbricate ; of back 

 and sides, imbricate; tongue thick, short, convex, 

 slightly nicked ; eyes diurnal, eyelids valvular, pupil 

 round; feet for walking, toes unequal, compressed; 

 tail with more or less distinct whorls of scales. 



25. FAMILY. Iguanas (Iguanidse). Body com- 



pressed, sub-trigonal, or depressed; toes sim- 

 ple or dilated; teeth round at root, dilated 

 and compressed at tip, toothed on the edge, 

 placed along inner side of jaws, just below 

 the edge. 



