1879.] made at Ajmere in Rajputana. 123 
colouration, and by the form of the dorsal scales. Assuming that the 
western form is Jwnatus, the following appear to be the distinctions. 
V.dracena. Back more rounded, and head higher. Scales throughout 
larger, the dorsal scales surrounded by granules, the central boss very con- 
vex, much longer than broad. The fold above the shoulder and along the 
side often ill-marked, and in old specimens wanting. 
Colouration dusky yellow to greenish olive thickly speckled with black. 
In the young the dark transverse bands are broad, nearly equal to the 
interspaces, 
V. lunatus? Back nearly flat, and head lower than in V. dracena. 
Scales throughout smaller, notably so on the labials, and as a rule on the 
supra-orbital regions. The dorsal scales in adults surrounded by a broad 
band of granules, the central boss nearly flat, but little longer than broad. 
The fold above the shoulder running back nearly to the thigh, and forward 
on the side of the neck, well marked in young specimens, and as a rule in 
adults. 
Colouration brownish olive to yellowish brown. Adults almost uni- 
formly coloured or thinly dotted with black on the upper parts. In the 
young the transverse bands are narrower than the interspaces (the very 
young are indistinguishable, however, from those of V. dracena). 
It is not certain that the latter species is the true V. /unatus, but as 
that form has smaller scales than the typical V. dracena, the monitor above 
described may be referred to it. ven now I am far from convinced that 
the two are absolutely separable 
Varanus lunatus (if this be correctly identified) is common near Ajmere. 
4. QOpuiops microzeris. (J. A. S. B., 1870, Pt. 2, p. 351; 1872, 
Pt. 2, p. 90; P. A. S. B., 1872, p. 74.) This seem rather a widely-spread 
form. ‘The present is the fourth locality noticed, the others are Bilaspur 
in the Eastern Central Provinces, Karharbari in Western Bengal, and 
Kachh. 
5. EHUPREPES GUENTHERI. 
E. monticola, Giinther, Reptiles of British India, p. 80, Pl. X, fig. 
C.—Stoliczka, J. A. S. B., 1872, Pt. 2, p. 120.—Theobald, Dese. Cat. Rep- 
tiles Brit. Ind., p. 52. 
Few people can be more loth to change a name which has subsisted 
for a considerable time than I am, but I think that this is clearly one of 
the cases to which the British Association rule, § 11, applies. That rule 
runs thus :—‘“ A name may be changed, when it implies a false proposition 
which is likely to propagate important errors.” Now the name monticola 
does imply a false proposition, for it indicates that the species so called is a 
