438 y AMPHISBANID 28. 
annulus contains forty to fifty-two segments, twenty to twenty-six 
on the dorsal, and as many on the ventral side. Lateral line dis- 
tinct. Eight or ten anal shields. Praanal pores seven to ten 
(6 to 12, Strauch), eight being the usual number. Black and white 
varied, either the one or the other colour predominating. 
millim. 
Length to vent ..........006- 390 
TAIL) seas gteaswes sole aH a Ramee 88 55 
Diameter of body .........+-- 18 
Tropical South America; West Indies. 
a, Ad. (A. 193+27; p. 8). W. Indies. Miss Saul [P.]. 
b-d. Ad. & her. (A.198+9, 201 British Guiana. 
+8, 204430; p. 8, 8, 10). 
e. Ad. (A. 199+9; p. 8). Berbice. Lady Essex [P.]. 
f. Ad. (199+29; p. 8). Berbice. ; 
g. Her. (A. 208+28 ; p. 7). Demerara. Capt. Sabine [P. ]. 
A-i. Ad. & her. (A. 201429, 217 Upper Amazon. 
+28; p. § 9). . 
k. Ad. (A. 204430; p. 8). Moyobamba. Mr. A. H. Roff (C.]. 
i, Ad, (A. 20949; p. 8). Cashiboya, Messrs. Veitch [P.]. 
N.E. Peru. 
m-n. Ad. & her. (A. 207+80, Sarayacu. Messrs. Veitch [P.]. 
212431; p. 8, 9). N.E. Peru. 
o. Ad. (A, 211482; p. 9). Guayaquil. My. Fraser [C]. 
p. Ad, (A. 207+27 ; p. 8). S. America. 
g. Ad. (204+11; p. 8). S. America. Bristol Museum [P.}. 
r, Ad, (202+29; p. 8). 8. America. 
s. Ad. (A. 210427; p. 7). S. America. 
t. Ad., stuffed. S. America. 
w. Hegr., skeleton. S. America. 
2. Amphisbena alba. 
Amphisbena alba, Gray, Cat. Tort. p. 70, 
and Sh, Rept. p. 35. 
Amphisbeena alba, Linn. S. N. i. p. 393; Daud. Rept. vii. p. 401, 
pl. xci. fig. 1; Dam. § Bibr. v. p. 484; Strauch, Mél. Bool. Ac. 
St. Petersb. xi. p. 378. 
rosea, Shaw, Nat. Misceil. iii. pl. 86. 
i pachyura, Wolf, Abbild. u. Beschr, merkw. nat. Gegenst. ii. p. 61, 
pl. xvii. 
— flavescens, Wied, Abbild. Nat. Bras.; Wagl. Icon. Descr. Amph. 
pl. xvi. fig. 1. 
Premaxillary teeth 5; maxillaries 5—5; mandibulars 8—8. 
Snout broad, rounded, slightly prominent. Tail as thick as the body, 
of equal width throughout. Rostral moderate, subtriangular ; nasals 
and prefrontals very large; frontals smaller; postocular large, 
sometimes divided ; no infraocular, the ocular, through which the 
eye is distinguishable, forming a suture with the second and third 
labials ; four upper labials, fourth small; mental trapezoid, followed 
by a heptagonal or pentagonal chin-shield; three or four lower 
