344 Mr. G. A. Boulenger on 



millim. 



Total length 250 



Head 20 



Width of head 9 



Body 60 



Fore limb 26 



Hind limb 45 



Tail 180 



A single male specimen. 



7. Ameiva surinamensis^ Laur. 



8. Amphisbcena Bohlsii, sp. n. 



Prjemaxillary teeth 5, raaxillaries 4 — 4, mandibulars 7 — 7. 

 Snout rounded, prominent. Rostral moderate, subtrian^j^ular, 

 just visible from above ; nasals large, shorter than the pr^e- 

 frontals, forming a suture ; a pair of large prgefroutals, tlie 

 suture between them as long as that between the frontals and 

 longer than that between the nasals ; a pair of frontals, a pair 

 of occipitals, and a pair of postoculars, subequal in size or 

 occipitals largest ; eye distinct through the ocular, which is 

 in contact with the second and third labials ; no prae- or 

 suboculars ; three upper labials, second and third largest ; 

 symphysial tetragonal, followed by a large octagonal chin- 

 shield ; three lower labials, second largest and followed by a 

 large lateral chin-shield. 232 to 239 annuli on the body and 

 29 on the tail ; on the middle of the body each annulus 

 divided into 36 segments, 18 above and as many below the 

 lateral line, which is distinct ; dorsal and lateral segments 

 longer than broad, the median ventrals once and a half 

 to once and two thirds as broad as long. Anal shields 8. 

 Pra^anal pores 6. Purplish above, whitish beneath, the dark 

 colour forming lines on the anterior borders of the annuli on 

 the sides of the belly and tail. 



Length to vent 280 millim. ; tail 42 ; diameter of body 10. 



Two specimens. 



9. AmpMshaina Darwinii, D. & B. 



10. Amphisbivna camura, Cope. 



Prgemaxillary teeth 5, maxillaries 4 — 4, mandibulars 7 — 7. 

 Snout rounded, prominent. Rostral moderate, subtriangular, 

 just visible from above ; nasals large, shorter than the priv- 

 frontals, forming a suture ; a pair of large pra^rontals, the 

 suture between them as long as or longer than that between 

 the frontals ; latter one pair, or divided into an anterior and a 



