36. LYCOBNATHOl'HIS. 317 



a-b. Ys'. (V. 143, 187 ; Madagascar. Kev. E. Baron [C.]. 



C. 47, 40). (Types of C. microps.) 



c. $ (V. 146; 0. ?). Imerina. Rev. J. Wills [0.]. 



(Type of L. imerlnee.) 



d. ? (V. 148 ; C. 43). East Imerina. Rev. R. Baron [0.]. 



5. Pseudoxyrhopus punctatus. 



Xenodon punctatus, Peters, Mon. Berl. Ac. 1880, p. 221, pi. — . 



fig. 3. 

 Pseudoxyrhopus punctatus, Boulenij. Ann. if Mag. N. H. (6) vi. 



Eye small. Rostral just visible from above ; internasals as long 

 as the prsefrontals ; frontal a little longer than broad, longer than 

 its distance from the end of ,the snout, shorter than the parietals : 

 loreal small, deeper than long ; one prse- and two postoculars : 

 temporals 1 + 2, anterior in contact with both postoculars; eight 

 ■upper labials, third, fourth, and fifth entering the eye ; four 

 lower labials in contact with the anterior chin-shields, which are a 

 little shorter than the posterior. Scales in 17 rows. Ventrals 162; 

 anal divided ; subcaudals 42. Dark brown above, with longitudinal 

 lines of black dots ; a white line along the upper labials ; lower 

 parts white, ventrals black on the sides and with a median black 

 spot here and there. 



Total length 170 millim. ; tail 26. 



Bra.zil (?). 



36. LYCO&NATHOPHIS. 



PsammopHs, part., iSchleg. Phys. Serp. ii. p. 201 (1837). 

 Tropidonotus, part., Dum. 8f Bihr. Erp. Oen. vii. p. 549 (1854) ; 

 Jan, Arch. Zool. Anat. iii. 1865, p. 203. 



Maxillary teeth large, subequal, 20-22 ; anterior mandibular 

 teeth very large, much larger than the posterior. Head very 

 distinct from neck ; eye moderate, with vertically elliptic pupil ; 

 no loreal shield. Body much elongate, rounded ; scales keeled, 

 with apical pUs, in 17 rows; ventrals rounded. Tail long; sub- 

 caudals in two rows. Hypapophyses developed throughout the 

 vei'tebral column. 



Seychelles. 



1. Lycognatliopliis sechellensis. 



Psammophis seychellensis, Schleg. Phys. Serp. ii. p. 212 (1837), and 



Abbild. pi. sliii. figs. 9-14 (1844). 

 Tropidonotus seychellensis, Dmn. ^ Bibr. vii. p. 588 (1854) ; Jan, 



Arch. Zool. Anat. Phys. iii. 1865, p. 226 ; Oiinth. Zool. Pec. 1869, 



p. 116. 

 Thrasops citrinus, Cope, Proc. Ac. Philad. 1868, p. 322. 



Rostral at least twice as broad as deep, not visible from above ; 



