148 



COLTJBRlBiE. 



Total length 430 millim. ; tail 70. 

 Southern Brazil. 



a. Hgr. c? (V. 170; 

 C. 57). 



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



4. Xenodon neuwiedii. 



Xenodon rhabdocephalus, part., Dum. fy Bibr. \\\. p. 758 (1854) ; 



GUnth. Cut. p. 56 (1858) ; Jan, Arch. Zool. Ajiat. Phys. ii. 1863, 



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

 neuwiedii, Giinth. An9i. Sf Mag. N. H. (3) xii. 1863, p. 354, 



pi. V. fig. C ; Hensel, Arch.f. Nat. 18C8, p. 228._ 



severus, part., Jati, Arch. Zool. Anat. Phy-^. ii. 1863, p. 317. 



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



Maxillary teeth 13-15 + 2, Head moderately depressed. Rostral 

 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 pra-frontals ; 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. Yentrals 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 fj-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,h,c-e. <S (V. 170, 162; 



C. 65, 62), 2 (V. 162; 



C. 56), & yg. (V. 166, 152; 



C. 60, 50). 

 f-i. S (V. 174; C.65)&vg. 



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



53, 58). 

 T(-q. d (V. 159, 163 ; C. 63, 



59) & $ (V. 162, 164, 



16.5, 164, 159; C. 50,51, 



63, 50, 50). 

 r. S (V. 175 ; C. 63). 



s. Yg. (V. 166 ; C. 64). 

 t. Skeleton. 



Rio Janeiro. 



Rio Janeiro. 



A.Fry, Esq."^ 



) (Types.) 



Rio Janeiro. Mrs. Fry [P.]. 



S. Jos^ dos 

 Campos, Prov. 

 S. Paulo. 



Santos, Brazil. 



Rio Janeiro. 



Mr. A. Thomson [P.]. 



Christiania Museum. 

 A. Fry, Esq. [P.]. 



