190 
Annals of the Transvaal Museum. 
Acontias holomelas, G : inth. Two specimens from the eastern 
parts of the island (Herschell-Chauvin). The longitudinal series of scales 
round the body number thirty in both examples. 4192-93. 
V oeltzko wia mira, Bottg. A single specimen from Miary, district 
of Betsioky. 4191. 
Chamaeleontidae. 
In the identification of the Chamaeleons we have been guided largely 
by Werner’s thesis in the “ Zoologische Jahrbuch. Syst.” (Vol. xv, 1902), 
and his account of the group in “ Das Tierreich ” (27 Lief., 1911). We 
have experienced no small difficulty in assigning some of the specimens 
to known species, and in a few cases we have considered it expedient to 
give full descriptions and varietal or even specific distinction. 
Chamaeleon lateralis, Gray. Several specimens from Analama- 
zotra and from the east coast at Ampantomaizina. 4194-98. 
Ch. verrucosus, Cuvier. A large individual measuring in total 
length 22 inches was taken at Tulear ; it was not, however, preserved. 
Ch. pardalis, Cuv. A juvenile specimen from the east coast 
(Herschell-Chauvin). 4199. 
Ch. rhinoceratus, Gray, lineatus, var. nov. (Plate X). A single 
specimen, measuring 153 mm., of which the tail is 73 mm., was taken at 
Tsivanoa. It is in most respects similar to rhinoceratus (= antimena 
according to Mocquard and Werner). However, certain differences have 
been recognized, of which the most important are to be seen in the shape 
of the rostral process, and in the presence of a very distinct white line 
occupying a median position on the ventral surface. 
Description — Casque which is not greatly elevated forms a sharp 
angle behind ; parietal crest raised and well developed. The lateral crests 
are not so distinct, but are indicated by enlarged subconical tubercles. 
Tubercles also exist on the canthus rostralis and on the bony rostral process. 
This process is somewhat concave above, the concavity much narrowed 
being continued in front and very slightly below. Viewing the head in 
profile this same appendage is seen to be slightly concave below. The 
rest of the head is covered by flat scales of unequal size. Occipital lobes 
are entirely absent. A dorsal crest of a few enlarged conical tubercles 
is present, about thirteen in number, not extending much behind the 
elbow when the forelimb is extended backwards in line with the body. 
An uninterrupted ventral crest exists, extending along the throat 
nearly as far as the vent. This crest consists of a single row of tubercles, 
broken up in places into two or even three rows. 
The white line which indicates this ventral crest forks just before the 
vent, runs along the anterior part of the under surface of the thighs, and 
makes its way back along the posterior part of the same, continuing as a 
double line along three-quarters of the length of the tail. 
The tubercles on the body are of unequal size ; a single but rather 
irregular row of enlarged tubercles is developed on the flanks. 
The tail is not compressed as in rhinoceratus. 4200. 
Ch. brevicornis, Giinth. This was found to be the commonest 
chamaeleon in the forests adjacent to Analamazotra ; it was also taken at 
Ambohidratrimo. 4201-18. 
