610 ADDENDA AND CORRIGENDA. 
interspace; anterior mandibular teeth longer than the posterior. 
Head distinct from neck; eye rather large, with round pupil; 
nasal single. Body short, rounded; scales smooth, without pits, in 
19 rows. Tail moderate; subcaudals in two rows. 
Madagascar. 
1. Compsophis albiventris. 
Compsophis albiventris, Mocg. 7. ¢. 
Rostral much broader than deep ; internasals as long as the pra- 
frontals ; frontal once and a half as long as broad, longer than its 
distance from the end of the snout, shorter than the parietals ; 
loreal deeper than long; one pre-and two postoculars ; temporals 
1+2,; seven upper labials, third and fourth entering the eye ; four 
lower labials in contact with the anterior chin-shields. Scales in 
19 rows. Ventrals 148; anal entire; subcaudals 41. Uniform 
dark brown above, white beneath; a yellowish-white spot on each 
temple, and a small yellowish-white spot on each of the six last 
upper labials. 
Total length 167 millim. ; tail 28, 
Ambre Mt. 
eae Page 274. Helicops bicolor. 
Helicops bicolor, Bocage, Herp. Angola, p. 76 (1895). 
AAA ses Page 275. Helicops septemvittatus. 
Limnophis septemvittatus, Bocourt, Miss. Sc. Mex., Rept. p. 809, 
pl. lx. fig. 1 (1895). 
Add:— Page 275, Helicops allenii. 
Liodytes allenii, Loennberg, Proc. U.S. Nat. Mus. xvii. 1894, p. 330. 
Add:— Page 281. Hydrathiops melanogaster. 
Hydrethiops melanogaster, Bocage, Herp, Angola, p. 77 (1895). 
Add :— Page 282, Tretanorhinus variabilis. 
Tretanorhinus variabilis, Bocourt, Miss, Se. Mex., Rept. p. 793, 
pl. lii. figs. 2 & 3 (1895). 
—— variabilis, var. cubanus, Bocourt, l. c. p. 795, pl. lii. fig. 3. 
d-e. 3 (V. 152, 156; O. 66, 65). Cuba. 
Add:— Page 282. Tretanorhinus nigroluteus. 
Tretanorhinus nigroluteus, Bocourt, 1. c. p. 798, pl. liv. fig. 1. 
—— lateralis, Bocourt, 1. c. p. 800, pl. lil. fig. 4. 
