3. AMPHISBENA. 439 
labials, second largest, first and second forming a suture with the 
median chin-shield; a large chin-shield on each side behind the 
second labial. Two hundred and nineteen to two hundred and 
thirty-three annuli on the body (205 to 242, Strauch) and seven- 
teen to twenty-one on the tail; the segments of the annuli all much 
longer than broad, and scarcely broader on the belly than on the 
back; on the middle of the body each annulus contains sixty to 
eighty segments, twenty-eight to thirty-eight on the dorsal and 
thirty-two to forty-two on the ventral side. Lateral line distinct. 
Eight or ten anal segments. Praanal pores six to ten. Brownish 
above, whitish beneath, uniform. 
millim 
Length to vent .............. 520 
Malls) isk sara casei euaig weang ware byuee 50 
Diameter of body ............ 23 
Tropical South America; West Indies. 
a. Ad. (A. 230+19; p. 9). Brazil. 
b. Ad. (A. 226418; p. 7). Brazil. 
e-d, Ad. (A. 232418, 233+18; Pernambuco. W. A. Forbes, Esq. [P.]. 
p. 8). 
e-g. Ad, (A. 219+19, 220421, Moyobamba. Mr, A. H. Roff [0.}. 
222419; p. 8). 
h-i. Ad. (A. 2382417, 225+17; 5. America. 
. 7, 6). 
k. Ae (A, 225420; p. 10). 8. America. 
1, Ad. (A. 231419; p. 8). S. America. 
m, Ad, (A. 222420; p. 9). 8. America. 
n. Ad., stuffed. S. America. 
o, p. Ad., skeletons. S. America. 
3. Amphisbena beniensis. 
Amphisbena beniensis, Cope, Proc, Am. Phil. Soc. xxii. 1885, 
pp. 184, 188, pl. —. fig. 2. 
Snout moderately elongate, obtuse; rostral plate a little visible 
from above; nasals forming a suture, which is shorter than that 
between the preefrontals or the frontals; a pair of prefrontals and 
a pair of smaller frontals ; occipitals small; eye visible through the 
ocular ; a postocular and an infraocular ; no preocular ; four upper 
labials, third and fourth small, second in contact with the ocular; 
mental subquadrate, followed by a seven-sided chin-shield; three 
lower labials. Tail with sixteen annuli. Light or ten anal seg- 
ments. Six preanal pores. Colour above light reddish brown; 
below yellow. 
Length to vent 310 millim. ; tail 35. 
Upper Beni River, Bolivia. 
