478 DR. J. E. GRAY ON THE CHAMALEONIDE. __[Nov. 8, 
the vertebral line, about midway between the head and the base of 
the tail. 
«* Hab. Eastward of Port Natal. 
“ Length: head and body 1 inch 10 lines; tail 1 inch 9 lines. 
Appears to be an adult.” (A. Smith, 1. c.) 
11. ENsIRosTRIS. 
Nose (of male, at least) with a single central compressed bony 
horn, sharp-edged above. Orbit rounded. Chin and belly simple, 
not dentated. Back and tail with a high crest of roundish lobes 
covered with scales. Occiput keeled, acutely produced behind, shel- 
ving on the sides, and with a broad hood-like lobe covered with scales 
on each side behind; scales unequal, granular, with larger rounded 
scattered tubercles. 
1. EnsirostRis MELLERI. (Pl. XXXII. fig. 1.) B.M. 
Stuffed, grey-brown, with whitish cross-bands on the body. 
Hab. E. Africa, on the mountains in the interior (Dr. Meller). 
A single specimen, probably a male. 
The head and hood are somewhat like those of Calumma cucullata ; 
but the back-crest and the scales are very different, too different to 
be sexes of the same species, as I was once inclined to think they 
might be. , 
12. SAUROCERAS. 
Nose (of male, at least) with a single central elongated bony horn, 
with a deep angular channel on the upper, and a sharp edge on the 
lower side. Orbit rounded. Back rather compressed, with a series 
of compressed conical scales. Tail compressed above. Occiput 
keeled, acutely produced behind, shelving on the sides, with a raised 
edge below, covered with small scales behind. Scales unequal, gra- 
nular, with large interspersed tubercles. 
1. SAUROCERAS RHINOCERATUM. (Pl. XXXII. fig. 2.) B.M. 
Chameleo rhinoceratus, Gray, Cat. B. M. 267. 
Hab. Madagascar. A single small specimen. 
13. DicRANOSAURA. 
Nose of male produced on the sides into two compressed bony 
horns covered with scales; of female, simple, hornless. Orbit 
rounded. Occiput flat above, produced, broad, and rounded behind, 
with small scales on its hinder sides. Back compressed, keeled, some- 
times dentated in front. Chin and belly not toothed. Scales equal. 
1. DicRANOSAURA BIFURCA. B.M. 
Chameleo bifurcus, Gray, Cat. B. M. 268; A. Dum. Arch. du 
Mus. vi. t. 22. f. 3. 
Chameleon brongniartit, Fitz. Syst. Rept. 42. 
Nose-horns elongate ; back dentated in front. Grey (in spirits), 
