23. DIPOEOPHOEA. — 24. PHTSIGUiTATHU'S. 395 



ridges of enlarged scales are present in specimen h. Brownish or 

 pale olive above, with two series of dark spots along the back and 

 tail ; specimen a with a large black spot on each side of the neck. 

 North Australia. 



a. 2 . Australia. G. Krefft, Esq. [P.]. (Type of 



OrammatopJwra maerolepis.) 



b. c? • [New Guinea and Islands.] 



3. Diporophora bennettii. (Pla.te XXXI. fig. 2.) 

 Gindalia bennettii, Gray, Cat. p. 247. 



Head moderately large, with obtuse canthus rostralis, covered 

 above with equal sharply keeled scales ; nostril equally distant from 

 the eye and the tip of the snout ; tympanum half the diameter of 

 the orbit. A transverse gular fold. Dorsal scales strongly keeled, 

 equal, about as large as the head-scales, the keels forming pretty 

 regular longitudinal series ; gular and ventral scales strongly keeled, 

 smaller than dorsals. Limbs moderate, digits short ; the adpressed 

 hind limb reaches the neck. Tail a little longer than head and 

 body. Olive-brown above, with very indistinct darker cross bars on 

 the limbs and tail. 



Total length 119 millim. 



Head 15 



■ Width of head 12 



Body 36 



Fore limb 20 



Hind limb 31 



Tail 68 



North-west Australia. 



a.?. N.W.Australia. Sir J. KichardsqjQ [P.]. (Type.) 



24. PHYSIGNATHUS *. 



Physignathus, Cuv. Ji. A. 2nd ed. ii. p. 41 : Wagl. Syst. Amph. 



p. 151 ; Wief/m. Herp. Mex. p. 14 ; Fitzing. Syst. Rept, p. 49 ; 



Gi'ay, Cat. p. 248 ; Gunth. Rept. Brit. Ind. p. 152. 

 Istiurus, part., Dum. <^ Bibr. iv. p. 376. 

 Lophognathus, Gray, Zool. Misc. p. 53, and Cat. p. 250. 

 Istiurus, Fitzing. Syst. Bept. p. 49. 

 Kedtenbacheria, Steind. Novara, Rept. p. 31. 



Tympanum distinct. Body more or less compressed. Nuchal 

 and dorsal crests present. No gular sac ; a strong transverse gular 

 fold. Tail round or more or less compressed. Toes not lobate. 

 Femoral pores present, at least in the male. , 



Australia and Papuasia ; Siam and Cochinchina, 



* Lophognathus lateralis, Macleay, Proc. Linn. Soc. N. S. W. ii. 1877, p. 103. — 

 Katow, New Q-uinea. 



