36. LYCOGNATiiornrs. 317 



a~h. y--. (V. 143. 137 ; Madagascar. Rev. R. Baron [C.]. 



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



c. $ (V. 146: C. ?). Imerina. liev. J. Wills [C.]. 



(Type of L. imerince.) 



d. 2 (V. 148 ; C. 43). East Imerina. Rev. R. Baron [C.]. 



5. Pseudoxyrhopus punctatus. 



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



fig. 3. 



Pseudoxyrhopus punctatus, Boitleny. Ann. •^^ Mag. N. H. ((>) yi. 



1890, p. 313. 



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

 as the prajfrontals ; 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 pro?- 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 ])osterior. 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 

 s])ot here and there. 



Total length 170 millim. ; tail 2Q. 



Brazil (?). 



30. LYCOGNATHOPHIS. 



Psaiumophis, part., Schh'fj. Pliys, Serjj. ii. p. 201 (1837). 

 Tropidonotus, part., IJirm. 3,- liihr. Erp. Gen. vii. p. 549 (1854) ; 

 Jan, Arch. Zuol. Anat. iii. 18Go, 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 cllij^tic pupil ; 

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

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

 caudals in two rows. Hypapophyses developed throughout the 

 vertebral column. 



Seychelles. 



1. Lycognatliophis sechellensis. 



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



Ahbild. pi. xli'ii. figs. 9-14 (1844). 

 Tropidonotus sevchellensis, Diim. S,- Bibr. vii. p. 588 (1854); Jan, 



Arch. Zuol. Anat. Phys. iii. 18Go, p. 226 ; G'dnth. Zool. JRec. 1869, 



p. 116. 

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



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



