174 COLrERTDiE. 



17. Rhadinsea lachrymans. 



Lygopliis lachrymans, Cope, Proc. Amer. Philos. Soc. xi. 1869, 



p. 164. 

 E.hadinaea lachrymans, Cope, Journ. Ac. Philad. viii. 1876, p. 140. 

 Dromicus lachrymans, GilntJi. Biol. C.-Am., Rept. p. 114 (1894). 



Snout short; rostral broader than deep ; internasals broader than 

 long ; frontal broad, shorter than the parietals ; loreal longer than 

 deep ; one pra?- and two postoculars ; temporals 1 + 2 ; eight npper 

 labials, fourth and fifth entering the eye ; anterior chin-shields shorter 

 than the posterior. Scales in 17 rows. Ventrals 173 ; anal divided ; 

 subcaudals 78. Chestnut-brown above ; end of ventrals and first three 

 and a half rows of scales blackish, yellowish-margined above from 

 side of neck to end of tail ; on the anterior half the body is divided 

 by a yellowish band on the first and second rows of scales ; head 

 aljove brown ; a deep brown band from eye across sixth labial, 

 another across seventh, and a black spot on each side of neck ; below 

 and labials bright yellow, the anterior upper labials brown margined. 



Habitat unknown. 



18. Rhadinsea undulata. 



Coluber undulatus, Wied, Beitr. Nat. Bras. i. p. 329, and Abhild. 



(1825). 

 Enicognatlius melanocephalus, part., Dum. %■ Bibr. vii. p. .330 f 18-'54) ; 



Jan, Arch. Zool. Anat. PJvjs. ii. 1863, p. 269, and Icon. Gen. 16, 



pi. i. fig. 4 (1866). 

 Coronella decorata {non Giinth. 1858), Giinth. Proc. Zool. Soc. 18-59, 



p. 412. 

 Dromicus brevirostris, Peters, Mon. Berl. Ac. 1863, p. 280, and 1871, 



p. 400. 



■ undulatus, Peters, I. c. 1863, p. 281. 



Enicognathus treniolatus, Jan, II. cc. p. 272, 16, pi. ii. f. 4. 

 Dromicus boursieri, Jan, Icon. Gen. 25, pi. ii. fig. 2 (1867). 



viperinus, Giinth. Ann. ^- Mai). N. H. (4) i. 1868, p. 418. 



Lygophis nicagus, Cope, Proc. Ac. Philad. 1868, p. 132. 

 Rhadinaea teniolata, Cope, Proc. Am. Philos. Soc. xi. 1869, p. 154. 

 Coronella whymperi, Boulvng. Ann. ^ Mag. N. H. (5) ix. 1882, 



p. 460, fig. 

 ? Enicognathus joberti, Sauvage, Bull. Soc. Philom. (7) viii. 1884, 



p. 146. 

 Rhadinfea nicaga. Cope, Proc. Am. Philos. Soc. xxiii. 1886, p. 102. 

 Coronella taeniolata, Boettg. Ber. Senck. Ges. 1888, p. 195. 



Snout very short ; rostral broader than deep, scarcely visible from 

 above ; internasals as long as broad, or a little broader, shorter than 

 the preefrontals ; frontal once and a half to once and two thirds as 

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

 shorter than the parietals ; loreal as long as deep or deeper than 

 long; one pros- and two postoculars; temporals l-|-2(rarely 2-|-2) ; 

 eight upper labials, third, fourth, and fifth entering the eye ; four 

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

 shorter than the posterior. Scales in 17 rows. Ventrals 149-1 07 ; 



