9 6 



Habitat: W. Sumatra (Batang Singalang!). 



The type-specimen, the only one ever captured, has been 

 for years in the Leyden Museum, preserved in spirit ; its colours 

 have nearly all faded. 



6. Harpesaurus Boulenger. 



(BOULENGER, Cat. Liz. I p. 279, 1885). 



Body compressed, covered with equal smooth scales. Snout 

 ending in a long compressed cutaneous appendage. Tympanum 

 distinct. Dorsal crest present or absent; no gular sac; no 

 transverse gular fold. No femoral or praeanal pores. 



Distribution. Nias; Sumatra; Java. 



Key to the Indo-Australian species. 



A. A dorsal crest. 



I. Rostral appendage single; three broad transverse 



yellow bands on the body I. H. tricinctus^ p. 96. 



II. Rostral appendage double; two transverse yel- 

 lowish bands 2. H. beccarii, p. 97. 



fi. No dorsal crest. 



Ventral scales smooth 3. H. ensicauda, p. 98. 



i. Harpesaurus tricinctus (A. Dum.). 



Arpephorus tricinctus, A. Dumeril, Cat. Meth. Rept. 1851, p. 93; Arch. Mus. 



VIII 1856, p. 571. 

 Harpesaurus tricinctus, Boulenger, Cat. Liz. I 1885, p. 279. 



Rostral appendage longer than the head, formed of a com- 

 pressed falciform scale curved upwards, surrounded at the 

 base by a few large scales. Head with small scales, slightly 

 tubercular; a large prominent, triangular scale on the snout; 

 canthus rostralis a serrated ridge. Gular scales tubercular. Body 

 compressed; dorsal crest a low serrated ridge; dorsal scales 

 smooth, equal, in regular transverse series; ventral scales keeled. 

 Tail compressed, with a crest above, slightly higher than the 

 dorsal, covered with keeled scales, below with a double series 

 of spinose scales. Limbs covered with keeled scales. 



Brown above, with three broad transverse yellow bands on 

 the body, the anterior the narrowest, on the shoulders, the others 

 descending on the flanks to the belly, where they do not meet. 

 Length of head and body (without rostral appendage) 64mm.; 

 tail 83 mm.; rostral appendage 21 mm. 



