81. RTUDINJSA. 17") 



anal divided : subcaudals 52-85. Length of tail 3 to 4\ times in 

 tlu- total length. Brown above, with a blackish vertebral streak or 

 zigzag band, becoming indistinct on the anterior part of the body 

 in the adult ; a black streak from the eye to the side of the nock, and 

 mint her along each side of the tail ; upper labials yellowish, uniform 

 or spotted with black, or blackish spotted with yellow ; a light, 

 black-edged spot on each side of the nape, and usually a pair of 

 IL'ht dots close together on the parietals ; yellowish inferiorly, 

 uniform or the edges of the ventrals blackish ; a black spot at the 

 outer end of each ventral ; chin and throat usually dotted or spotted 

 \vith black. 



Total length 410 millira. ; tail 135. 



Brazil, Ecuador, Guiana *. 



a-b. <$ (V. 156 ; C. 66) & Milligalli, Ecuador, E. Whytnper, Esq. [C.I 



$ (V. 154 ; C. ?) 6200 feet. (Types of C. whymperi.) 



c. Htrr. (V. 165; C. 57). W. Ecuador. Mr. Fraser [C.]. I 



d-e. Hgr. (V. 160, 161; Pebas. Mr. J. Hauxwell [C.]. f 



C. 60, ?). (Types of D. viperinus.) 



19. Rliadinaea melananchen. 



Enicognathus melanaucben, Jan, Arch. ZwJ. Anat. Phys. ii. 1863, 

 p. 267, and Icon. Gtn. 16, pi. i. tig. 2 (1866). 



Eye rather small. Rostral much broader than deep, scarcely 

 visible from above ; internasals as long as broad, nearly as long as the 

 pncfrontals ; frontal once and a half as long as broad, a little longer 

 than its distance from the end of the snout, a little shorter than the 

 parietals ; loreal square ; one prae- and three postoculars ; temporals 

 1 + '2 ; eight upper labials, third, fourth, and fifth entering the eye ; 

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

 are much shorter than the posterior. Scales in 15 rows. Ventrals 

 148 ; anal divided ; subcaudals 60. Reddish brown above, with 

 blackish cross bands ; a large blackish, white-edged transverse spot 

 on the nape ; lips and chin white, speckled with black ; lower 

 surface uniform white. 



Total length 350 millim. ; tail 95. 



Bahia. 



20. Ehadinaea occipitalis. 



Coronella elegans (won Tsch.), Giinth. Cat. p. 38 (1858). 

 Enicognathus occipitalis, Jan, Arch. Zool. Anat. Phys. ii. 1863, 



p. L',7, and Icon. Gtn. 16, pi. i. fig. 1 (1866). 

 Dromicus (Lygophis) wuchereri, Gitnth. Ann. i$" May. N. H. (3) 



xii. 1864, p. 225, tig. 



Liophis reginte, part., Steind. Sitz. Ak. HYen, Iv. 1867, p. 268. 

 Drotnicus miolepis, Boetig. Zool. Anz. 18M, p. 385. 

 Khadinrea occipitalis, Louleng. Ann. 8f May. N. H. (6) xiii. 1894, 



p. 347. 



* I have examined a specimen from Cayenne, preferred in the Basle MUBCUIU. 



