3. AMPHISBENA. 445 
sixteen dorsal and twelve ventral segments, the former elongate and 
narrow, the latter, especially the two median, broader. Lateral 
line very distinct ; a vertebral and a ventral line. Six anal seg- 
ments ; four preeanal pores. Yellowish brown. 
Caicara and Mattogrosso, Brazil. 
15. Amphisbena mildei. 
Amphisbena mildei, Peters, Mon. Berl. Ac. 1878, p. 779, pl. —. 
fig. 3; Strauch, Mél. Biol. Ac. St, Petersb. xi. p. 396. 
Rostral moderate, pentagonal, much broader than high; nasals 
forming a short suture; prefrontals twice as long as latter; a pair 
of smaller frontals ; a preeocular, between the first and second labials, 
and an infraocular, between the second and third; three upper 
labials, first largest, second in contact with the ocular; three lower 
labials, second largest. One hundred and ninety-eight annuli on 
the body, and twenty-four on the tail. A lateral line. Six anal 
segments ; four preanal pores. Purplish brown above, whitish in- 
feriorly. 
millim 
Length to Vent: .cige ae vie eos wiilel bas cues 293 
Pad | ze ogres Gate as he hed Sabb eee eae Sea 37 
Diameter of body .......... cece eee 11 
Porto Alegre. 
16. Amphisbena ceca. 
Sarea ceca, Gray, Cat. Tort, p. 71. 
» part., Gray, Cat. Sh. Rept. ii. p. 37. 
innocens, Gray, /. ¢. 
Amphisbeena ceca, Cuv. R. A. 2nd ed. il, p. 73; Dum. § Bibr. v. 
. 492; Peters, Mon, Berl. Ac. 1878, p. 78], pl. —. fig. 7; Strauch, 
Veal. Biol. Ac. St. Petersb. xi. p. 405. 
innocens, Weinl. Abh. Senck. Ges. iv. 1862, p. 187, pl. v. 
fig. 2. 
Premaxillary teeth 7, maxillaries 5-5, mandibulars 8-8. Snout 
rather pointed, slightly prominent. Tail thinner than the body. 
Rostral small, triangular; nasals forming a short suture; a pair of 
very large preefrontals, followed by a pair of much smaller frontals ; 
eye hardly distinguishable through the ocular; a postocular, no 
infraocular ; three large upper labials, and an indistinct fourth, the 
second and third forming a suture with the ocular; mental quad- 
rangular, followed by a large seven-sided chin-shield which is much 
longer than broad; a triangular chin-shield on each side, behind 
the second labial; lower labials three, second very large. One 
hundred and eighty-nine (to 247, Strauch) annuli on the body and 
nineteen on the tail; the divisions of the annuli longer than broad, 
nearly equilateral on the middle of the belly, but nowhere broader 
than long; on the middle of the body an annulus contains forty-two 
divisions, eighteen above and twenty-four below the lateral lines. 
Anal shields eight [or six]. Praanal pores four. Brown above, 
lighter beneath. 
