464 AMPHISBENIDZ. 
Lateral line mueh stronger than the vertebral and ventral. Light 
yellowish-brown, the segments each with a darker spot. 
millim 
Length to vent .............. 384 
PERS ocecesati ds Soecapg uraner ate 5 Seals 26 
Bahia. 
5. Lepidosternon rostratum. 
Lepidosternon rostratum, Strauch, Mél. Biol. Ac. St. Peters. xi. 
p. 433, 
Differs from L. infraorbitale by the much more pointed, prominent, 
and strongly depressed snout, the horizontal edge of which is almost 
sharp, and by the absence of infraocular. Two hundred and forty 
to two hundred and forty-five annuli on the body, and fourteen to 
sixteen on the tail. The spots on the dorsal segments very indis- 
tinct. 
Length to vent, 585 millim.; tail 35 millim. 
Bahia. 
6. Lepidosternon petersii. 
Lepidosternon petersii, Strauch, Mél. Biol. Ac. St. Petersb. xi. p. 438. 
Snout rather pointed, not turned upwards ; rostral followed by a 
pair of short but very broad preefrontals; behind the latter, a hex- 
agonal frontal, broader than long, followed by two pentagonal 
parietals which are but little smaller than the frontal; a pair of 
small occipitals ; a rather small supraocular ; eye not distinguishable ; 
three temporals, upper largest; two upper labials, anterior very 
large; mental short and broad, followed by a median large chin- 
shield ; a small lateral chin-shield on each side; three lower labials, 
first very small, second large. Two hundred and nine annuli on the 
body and sixteen on the tail. Pectoral shields numerous, small, 
polygonal, with three median pairs (on a transverse line) strongly 
dilated longitudinally. Six anal shields. Lateral line very distinct, 
vertebral and ventral lines less so. Light brown above. 
Brazil. 
7. Lepidosternon polystegum. 
Lepidosternon grayii, Gray, Cat. Sh. Rept. ii. p. 40. 
Lepidosternon polystegum, A. Dum. Cat. Méth. Rept. p. 149; Peters, 
Mon. Berl. Ac. 1879, p. 277, pl. —. fig. 3; Strauch, Mél, Biol, Ac. 
St. Petersb. xi. p. 441. 
grayii (Smith), Gray, Proc. Zool. Soc, 1865, p. 452, fig. 
Premaxillary tooth 1; maxillaries 2—2; mandibulars 5—5. 
Snout depressed, prominent, turned upwards, broadly rounded, with 
angular horizontal edge; rostral large, widely separated from the 
ocular, with a pair of short grooves posteriorly ; it is separated from 
the frontal by a pair of narrow, band-like, transverse preefrontals ; 
frontal small, hexagonal, with very open anterior angle and acute 
