148 



COLUBEIB^. 



Total length 430 millim. ; tail 70, 

 Southern Brazil. 



a. -Rgr. S (V. 170; 

 C. 67). 



Lagos, Sta. Cathariiia. Hr. Michaelis [C.]. 



4. Xenodon neuwiedii. 



Xenodon rhahdocephalus, part., Dum. 8r Bibr. vii. p. 758 (1854) ; 



Qunth. Cat. p. 56 (1858) ; Jan, Arch. Zool. Anat. Phys. ii. 1863, 



p. 317, and Icon. Gin. 19, pi. v. fig. 1 (1866). 

 neuwiedii, Gunth. Ann. 8f Mag. N. H. (3) xii. 1863, p. 364, 



pi. V. fig.C; Hensel, Arch. f. Nat. 1868, p. 228._ 



SBTsrus, part., Jan, Arch. Zool. Anat. Phys. ii. 1863, p. 317. 



neovidii, Cope, Proc. Ac. Philad. 1868, p. 133. 



Maxillary teeth 13-15 + 2. Head moderately depressed. Eostral 

 shield once and a half to once and two thirds as broad as deep, the 

 portion visible from above measuring about one fourth to one third 

 its distance from the frontal ; internasals broader than long (if but 

 very slightly), shorter than the praafrontals ; frontal longer than 

 broad, as long as its distance from the end of the snout, as long as 

 or a little shorter than the parietals ; loreal as long as deep or 

 deeper than long ; one prse- and two postoculars ; temporals 1 + 2 ; 

 eight upper labials, fourth and fifth entering the eye ; five lower 

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

 than the posterior. Scales in 21 rows. Ventrals obtusely angulate 

 laterally, 152-176 ; anal divided (exceptionally entire); subcaudals 

 50-69. Above with more or less distinct, dark brown, black-edged, 

 angular cross bars separated by narrow yellowish or pale olive 

 interspaces ; usually a large A or A-shaped dark marking on the 

 nape ; a fl-shaped dark band round the head, passing through the 

 eyes, and a dark cross bar between the eyes ; belly yellowish, 

 usually with brown dots which crowd together to form cross bands ; 

 usually a few deep black spots on each side of the anterior part of 

 the body. 



Total length 800 millim. ; tail 130. 



Southern Brazil. 



a, b, c-e. S ("V. 170, 162 ; Eio Janeiro. A. Fry, Esq. 



C. 65, 62), $ (V. 162 ; [P.]. 



C.56),&yg.(V.156, 152; 



0. 60, 50). r(Types.) 



f-i. c? (V. 174 ; 0. 65) & yg. Rio Janeiro. 



(V. 154, 163, 166 ; 0. 51, 



63, 58). 

 k-q. d (V. 159, 163 ; C. 63, Eio Janeko. Mrs. Fry [P. 



59) & 2 (V. 162, 164, 



165, 164, 159; C. 50,51, 



63, 50, 50). 

 r. cJ (V. 175 ; C. 63). S. Jos^ dos Mr. A. Thomson [P.]. 



Campos, Prov. 

 8. Paulo. 

 s. Yg. (V. 166 ; C. 64). Santos, Brazil. Christiania Museum, 



t. Skeleton. Rio Janeiro. A. Fry, Esq. [P.], 



