On Lizards of the Genus Lophognathus. 225 
XXVI.—Remarks on the Lizards of the Genus Lophognathus. 
By G. A. BOULENGER. 
I Am acquainted with four forms of Lophognathus which I 
think well entitled to specific distinction. ‘Two species only 
have hitherto been described, viz. LZ. Gilbert’, Gray, and L. 
lateralis, Macleay (Proc. Linn. Soc. N.S. Wales, 11. 1878, 
p- 103). Under the former name Gray (Cat. Liz. 1845) con- 
founded two forms ; but his description is chiefly penned from 
the one which has been excellently figured in the Zoology of 
the ‘ Krebus’ and ‘ Terror,’ and tor which I will retain the 
name. It is difficult to say, from Macleay’s description, what 
L. lateralis is. The principal characters of the four forms in 
the British Museum are as follows : 
1. Lophognathus Gilbertt. 
Lophognathus Gilberti, Gray, Zool. Misc. p. 53, and Cat. Liz. p. 250 
(part.), and Zool. ‘ Erebus’ and ‘Terror,’ pl. xix. fig. 2. 
Redtenbacheria fasciata, Steindachn. Novara, Rept. p. 31. 
Snout not longer than the distance between the orbit and 
the posterior border of the ear. Nostril a little nearer the 
orbit than the tip of the snout. Keels of the upper dorsal 
seales horizontal, forming parallel lines with the vertebral 
erest. Parotoid region with a few erect pointed scales. Gular 
scales very feebly keeled. A broad light band along upper 
and lower lip; a light band along each side of the back. 
One specimen from Port Essington and three from the 
Swan river. 
2. Lophognathus longirostris, sp. n. 
Snout longer than the distance between the orbit and the 
posterior border of the ear. Nostril a little nearer the orbit 
than the tip of the snout. Dorsal scales all obliquely directed 
upwards. Gular scales very feebly keeled. A light band 
bordering the lower lip; a light band along each side of the 
back. 
Three specimens from Champion Bay, N.W. Australia. 
3. Lophognathus labialis, sp. n. 
Lophognathus Giiberti (part.), Gray, Cat. Liz. p. 250. 
Snout not longer than the distance between the orbit and 
the posterior border of the ear. Nostril a little nearer the tip 
of the snout than the orbit. Dorsal scales all obliquely 
