8. LTGOSOMA. 237 



twelve to fourteen cross bands between the head and the base of the 

 tail ; lower surfaces whitish. 



17. Lygosoma monotropis. (Plate XIV. fig. 2.) 



Habit lacertiform, limbs rather short; the distance between the 

 end of the snout and the fore limb is contained once and one third 

 to once and a half in the distance between axilla and groin. Snout 

 short, obtuse. Lower eyelid scaly. Nostril pierced in a single 

 nasal ; no supranasal ; frontonasal a little broader than long, forming 

 a narrow suture with the rostral and with the frontal ; latter as long 

 as or a little longer than frontoparietals and parietals together, in 

 contact with the three anterior supraoculars ; four supraoculars ; 

 eight supraciliaries ; frontoparietals and interparietal distinct, equal 

 in length ; parietals forming a siiture behind the interparietal ; 

 no regular nuchals ; three enlarged scales on each side border the 

 parietals ; sixth and seventh upper labials below the eye. Ear- 

 opening suboval, much smaller than the eye-opening ; no auricular 

 denticulation. 28 or 30 scales round the middle of the body ; dorsals 

 largest and obtusely unicarinate, the keels forming continuous lines 

 along the back and tail. A pair of enlarged prteanals. The ad- 

 pressed limbs meet or overlap. Digits rather short, compressed ; 

 subdigital lamellae smooth, divided, 22 to 26 under the fourth toe. 

 Tail very thick. Pale brown above, with broad dark brown trans- 

 verse bands, nine or ten between the head and the base of the tail ; 

 lower surfaces whitish. 



millim. millim. 



Total length 178 Fore limb 21 



Head 18 Hind limb 30 



Width of head 12 Tail (reproduced) . . 95 



Body 65 



North-western Australia. 



a-b. Ad. & yg. Champion Bay. Mr. Duboulay [C 



c. Ad. W. Australia. Mr. Duboulay fO 



;]: 



18. Lygosoma fasciatum. (Plate XV. fig. 2.) 



Plinulia fasciata, Gray, Cat. p. 75. 

 Lygosoma (Hinulia) fasciatum, Peters, Mon. Berl. Ac. 1872, p. 583. 



Body elongate, limbs rather short ; the distance between the end 



