M42 COLUBEIDJBi 



anal divided ; subcaudals 22-30. Eed above, white beneatt ; 

 upper surface of head and nape black, separated by a yeUowish- 

 white cross-band. ' 



Total length 370 miUim. ; tail 25. Grows to 938 miUim. 



Bolivia, Paraguay, Southern Brazil, Uruguay. 



a-h. Hgr. (V. 223 ; C. 23) Uruguay. 

 & yg. (V. 226 ; C. 26). 



5. Elapomorphus lemniscatus. 



Elapomorphus lemniscatus, Bum. ^ Bibr. vii. p. 840 (1864) ; Jan, 



Arch. Zool. Anat. Phys. ii. 1862, p. 45, and Icon. G&n. 14, pi. ii. 



fig. 3 (1865) ; Strauch, Bull. Ac. St. Pitersb. xxix. 1884, p. 567 ; 



Bouleng. Ann. ^ Mag. N. S. (5) xv. 1885, p. 321, pi. x., and xvi. 



1885, p. 296. 

 reticulatus, Peters, Man. Berl. Ac. 1860, p. 518, pi. — . fig. 2 ; 



Strauch, I. c. p. 569. 

 Phalotris lemniscatus. Cope, Proc. Ac. PhUad. 1861, p. 524. 



reticulatus, Cope, I. c. 



Elapomorphus iheringi, Strnuch, I, c. p. 571. 



Phalotris melanopleurus, Cope, Proc. Amer. Philos. Soc. xxii. 1885, 



p. 189. 



Eostral a little broader than deep, the portion visible from above 

 measuring about half its distance from the frontal ; suture between 

 the internasals one fourth to one third the length of the single 

 prsefrontal ; frontal once and one third to once and two thirds as 

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

 much shorter than the parietals, which are at least twice as long as 

 broad ; one prse- and two postoculars ; temporals 1 + 1 ; six upper 

 labials, second and third entering the eye ; four lower labials in 

 contact with the anterior chin-shields, which are as long as or a 

 little longer than the posterior. Scales in 15 rows. Ventrals 185- 

 212 ; anal divided ; subeaudals 21-34. Eed to greyish brown, 

 above, with or without a black vertebral stripe ; head blackish, 

 usually with a yellowish, black-edged occipital collar which may 

 be much reduced or even entirely absent ; lateral scales and ventrals 

 and subeaudals black, light-edged, the outer or the two outer rows 

 of scales often yellowish white ; a black bar across the base of the 

 tail. 



Total length 700 millim. ; tail 60. 



Southern Brazil, Paraguay, Uruguay, Argentina. 



ar-b,c,dr-f,g-h.^(y.20'2; Eio Grande do Sul. Dr. H. v. Ihering 



C. 25), $ (V. 207, 208, [0.1. 



209 ; 0. 23, 25, 26), & yg. 



(V. 186, 185, 211 ; C. 28, 



34, 24). 

 I. S (V. 204 ; C. 22). Paraguay. Prof. Grant [P.]. 

 m-o. e (V. 185 ; C. 25), $ Uruguay. 



(V. 208 ; 0. 22), & yg. 



(V. 192; 0.26). 



