1. CHAMELEON. 455 
tubercles, the canthi rostrales uniting on the end of the snout, 
which, in the adult, projects beyond the labial margin and is often 
slightly bifid; casque rounded or obtusely angular posteriorly ; head- 
scales large, unequal, largest on the snout and on the occiput; no 
trace whatever of occipital lobes. Body covered with granules 
intermixed with feebly enlarged, scattered, round, flat tubercles; a 
crest of puinted tubercles on the vertebral line; a series of conical 
tubercles forms a crest along the throat and belly, interrupted under 
the neck. No tarsal process. Tail a little longer than head and 
body. Commissure of the mouth whitish; a whitish band along 
each side, from above the arm. 
, 
millim 
Popa lenetlhe ofan ouchvashaa dalam Wie eee 485 
From end of snout to extremity of mandible .. 50 
From end of snout to extremity of casque .... 68 
Greatest width between lateral cranial crests .. 33 
Depth of skull (mandible included) .......... 41 
Wadth ofhéad. -.c20-paugaekeenaneree mows aed 32 
BOG «fc5 hie cas eens ss iis do dae area abo eC keels 170 
SLAD IA ale ie ak dew lagh serosa aUReOse PEROT OS 37 
Tail I cietgtee citer jest aan steered eins ee eee ticks 265 
Madagascar, Bourbon, Mauritius. 
ao. Madagascar. 
b. ©, stuffed. Madagascar. 
e. Her. Bourbon, Paris Museum. 
d-e, f d. - 
g. Skeleton. Madagascar. 
16. Chamzleon cephalolepis. 
P Chameleo polleni, Peters, Mon. Berl. Ac. 1873, p. 792. 
Chameleon cephalolepis, Giinth. Ann. § Mag. N. H. (5) vi. 1880, 
p. 287, fig. 
Casque broad and rounded, and not much elevated posteriorly ; a 
strong parietal crest; the distance between the commissure of the 
mouth and the extremity of the casque equals the distance between 
the former point and the nostril; lateral crest distinct all round the 
head, formed of large tubercles, which are largest on the canthi 
rostrales; these unite on the end of the snout, where a pair of 
conical tubercles, pointing forwards, project beyond the labial 
margin; head-scales large, subequal, largest on the snout; no trace 
whatever of occipital lobes. Body covered with uniform small 
granules; a few isolated conical tubercles form a crest on the 
anterior part of the back ; a series of conical tubercles forms a crest 
along the throat and belly, interrupted under the neck. No tarsal 
process. ‘Tail a little longer than head and body. 
"Total length, ..secceese sve ee nawy neds .. 167 
From end of snout to extremity of mandible .. 21 
From end of snout to extremity of casque .... 26 
