137. LANGAHA, 37 
sometimes dotted with blackish ; a fine yellowish-white line, edged 
above with brown or black, extends on each side from below the 
nasal shield to the anterior third of the body, where it is gradually. 
lost. 
Total length 950 millim. ; tail 410. 
Madagascar. 
a. Hgr. (V. 150; C.141), Madagascar. Paris Museum [E. }. 
b. gS (V. 152; C. 148). Madagascar. 
c-d, g (V. 149; C.? )&yg. Imerina. Rey. R. Baron [C.]. 
(V. 148; C. 137 ). 
é. o (VY. 150; C. ?). Antongil Bay. —L. Pj Ransome, Esq, 
PP al 
J. & (V. 147; C. 142). Nossi Bé. 
‘g- Skull of f.’ 
2. Langaha intermedia. 
Langaha 2 aes Bouleng. Ann. § Mag.'N. H. (6) i. 1888, p. 105, 
pl. v. fig. 6 
Intermediate between L. nasuta and L. crista-galli. Rostral 
appendage once and a half to once and two thirds as long as the 
snout, tapering to a sharp point, feebly serrated at the end, its 
basal depth contained four to five times in its length. Ventrals 
142-147 ; subcaudals 120-135. Grey-brown above and beneath, 
speckled with dark brown or black and with more or less distinct 
traces of lighter, dark-edged cross-bars on the sides; no light 
lateral streak. 
Total length 910 millim. ; tail 315. 
Madagascar. 
a. 9 (V. 142; C. 125). Nossi Bé. (Type.) 
3, s (Vi 146, 147; C. 135, Madagascar. 
29). 
d. Ye (V. 147; C. 120). Madagascar. Mr. Last [C.], 
3. Langaha crista-galli. 
Langaha ecrista-galli, Dum. § Bibr. vii. p. 806, pl. Ixxi. (1854) ; 
Giinth. Cat. p. 162 (1858); Jan, Icon. Gén. 33, pl. vi. fig. 1 (1869) ; 
Boettg. Abh. Senck. Ges. xi. 1879, p. 465. 
Differs from the two preceding in having the rostral appendage 
much deeper, obtuse or rounded, and strongly serrated at the end; 
its length once and one third to once and a half that of the snout, 
~ its greatest depth two to three times in its length; the serrations 
forming one crest above and two below the distal half of the 
appendage. Ventrals 146-149; subcaudals 119-142. Grey- 
brown or reddish above and beneath, more or less speckled with 
dark brown, and with a lateral series of more or less distinct 
whitish, dark-edged spots alternating with those on the other 
side ; no light lateral streak. 
