3. AMPHISB^NA. 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 pra}anal pores. Yellowish brown. 

 Cai§ara and Mattogrosso, Brazil. 



15. Ampliisbsena mildei. 



Araphisba^na mildei, Peters, Mon. Bed. Ac. 1878, p. 779, pi. — . 

 fig. 3 ; Stvauch, Mel. Biol. Ac. St. Petersb. xi. p. 395. 



Rostral moderate, pentagonal, much broader than high ; nasals 

 forming a short suture ; prajfrontals twice as long as latter ; a pair 

 of smaller frontals ; a praeocular, between the first and second labials, 

 and an infraocular, between the second and third ; three iipper 

 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 pra'anal pores. Purplish browu above, whitish in- 

 feriorly. 



niillim. 



Length to veat 293 



Tail 37 



Diameter of body 11 



Porto Alegre. 



16. AmpMsbaena cseca. 



Sarea cseca, Gray, Cat. Tort. p. 71. 



, part., Gray, Cat. Sh. Pept. ii. p. 37. 



innoceus, Gray, I. c. 



Amphisb.iena cseca, Cuv. R. A. 2nd ed. ii. p. 73; Dum. ^- Bihr. v. 

 p. 492 ; Peters, Mon. Berl. Ac. 1878, p. 781, pi. — . tig. 7 ; Strauch, 

 Mel. Biol. Ac. St. Petersb. xi. p. 405. 



innocens, Weinl. Abh. Senck. Ges. iv. 1862, p. 137, pi. v. 



fig. 2. 



Praemaxillary teeth 7, maxillaries 5-5, mandibulars 8-8. Snout 

 rather pointed, slightly prominent. Tail thinner than the body, 

 llostral small, triangular ; nasals forming a short suture ; a pair of 

 very large pra^frontals, 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, Strcna-h) annuli cm 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 aiiiiulus contains forty-two 

 divisions, eighteen above and twenty-four below the lateral lines. 

 Anal shields eight [or six]. Pra^anal pores fo>ir. Brown above, 

 lighter beneatli. 



