1. CHAMZLEON. 463 
South-west Africa, from the mouth of the Orange River to Angola. 
a-b. 2 & her. Mouth of Orange River. Sir A. Smith [P.]. 
e, d. Stuffed. Namaqualand. . 8. African Museum. (Types 
of C. tuberculiferus.) 
e. Several spec.: Damaraland. 
3,2, & yg. - 
Pos Mossamedes. Dr. Welwitsch [P.]. 
Oh QD. S. Africa. 
28. Chameleon bifidus. 
Chameleo bifurcus, Gray, Cat. p. 268. 
Chameleo bifidus, Brongn. Bull. Soc. Philom. ii. 1800, p. 90, pl. vi. 
fig. 2; Daud. Rept. iv. p. 217, pl. liv.; Dum. § Bibr. iii. p. 233, 
pl. xxvii. fig. 3. 
bifurcus, Kuhl, Beitr. Zool. Vergl. Anat. p. 103. 
Chameleon (Furcifer) brongniartii, Pitzing. Syst. Rept. p. 42. 
Chamzleo balteatus, 4. Dum. Cat. Méth. Rept. p. 32, and Arch. 
Mus. vi. p. 260, pl. xxii. fig. 2; Gray, Proc. Zool, Soc, 1864, p. 472. 
Dicranosaura bifurca, Gray, l. c. p. 478.. 
Casque broad and rounded, and not much elevated posteriorly ; 
no parietal crest; the distance between the commissure of the 
mouth and the extremity of the casque is a little less than the 
length of the mouth; lateral crest surrounding the casque pos- 
teriorly, tubercular in the adult; adult male with two long com- 
pressed rostral processes or horns covered with scales, parallel or 
very slightly diverging; these processes short and cartilaginous in 
the young male, absent in the female; no trace whatever of occipital 
lobes. Body covered with subequal flat granules ; a series of conical 
tubercles form a serrated ridge on the anterior part of the back; no 
gular nor ventral crest. No tarsal process. Tail much longer than 
head and body. Usually a more or less distinct light band along 
each side of the belly, from limb to limb. 
3. 
millim. millim. 
Total length....6...sa0cs0seensas arenes 390 296 
From end of snout to extremity of man- 
dible i cascSeee tavees ea mee Seas 35 30 
From end of snout to extremity of casque 47 37 
Length of rostral processes ....... reese 26 <= 
Greatest width between lateral cranial 
CRESS. aokew is RoR Ee Kw ee HEE OMA 24 20 
Depth of skull (mandible included) .... 32 24 
Width of head .. 1.0... ce eee ee eee 25 21 
Bod yd seseveee sateen wus ae eww eles 4 125 94 
TEU Lal gence eusasaisiccsind Bee Gta SPH Bae 33 25 
Tall cae cena Aeee se eee eels 230 172 
Madagascar. 
a,b. dS. Madagascar. Dr. J.B. Gray [P 
de. 9 & her. g. Madagascar. r. J. E. Gray [P.]. 
7? . : oe Near Tamatave. Rey. W. D. Cowan [C.]. 
g. 3» E. Betsileo. Mr. T. Waters [C.]. 
