168 COLUBRID.E. 



Cpronella poecilolsemus, Giinth. Ann. $ Mag. N. II. (4) ix. 1872, p. 19. 

 Liopbis purpurans, Giinth. I. c. 



Eye rather small. Rostral broader than deep, scarcely visible 

 from above ; internasals a little broader than long, as long as or a 

 little shorter than the praefrontals ; frontal nearly twice as long as 

 broad, longer than its distance from the end of the snout, slightly 

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

 long ; one pne- 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 as long as or a 

 little longer than the posterior. Scales in 17 rows. Ventrals 150 

 170; anal divided; subcaudals 51-65. Length of tail 5 to 5| 

 times in the total length. Dark brown above, with a lighter, 

 black-edged streak along each side of the posterior half of the body, 

 most distinct on the tail ; sometimes a white line across the nape ; 

 upper lip white ; below white, with square or transverse black spots, 

 which may be confluent on the anterior portion of the body, more 

 sparse posteriorly, and absent on the tail. 



Total length 460 millim. ; tail 90. 



From the Guianas to the Upper Amazon. 



. Hgr. (V. 150 ; C. 63). Demerara. Zool. Society. 



b, c. c? (V. 156 ; C. 62) & $ Upper Amazon. Mr. E. Bartlett [C.]. 

 (V. 170 ; C. 52). (Types of C. pcecilolcemus.') 



d. Hgr. (V. 163 ; C. 65). ? E. India Company. 



(Type of C. orientalis.) 



9. Rhadinaea merremii. 



? Coluber miliaris, Linn. Mus. Ad. Frid. p. 27 (1764), and S. N. i. 



p. 380 (1766). 

 Coluber merremii, Wied, Keise Bras. ii. p. 121 (1821), Beitr. Nat. 



Bras. i. p. 332, and Albild. (1825). 

 miliaris, JRaddi, Mem. Soc. Ital. Modena, xix. (Fis.) 1823, 



p. 65. 

 Natrix chiametla, Wagl. in Sptx, Serp. Bras. p. 14, pi. ii. b. fig. 2 



(1824). 



Coluber bicolor, Hews, Mm. Senckenb. i. p. 145, pi. viii. fig. 1 (1833). 

 Coronella merremii, part., Schleg. Phys. Serp. ii. p. 68 (1837). 

 Liophis merremii, part., Dum. 8f Bibr. vii. p. 708 (1854) ; Giinth. 



Cat. p. 44 (1858) ; Jan, Arch. Zool. Anat. Phys. ii. 1863, p. 291. 

 Coronella australis, Giinth. I. c. p. 40. 



Ophiomorpmis merremii, Cope, Proc. Ac. Philad. 1862, p. 75. 

 Liophis bicolor, Jan, 1. c. p. 296. 



Eye rather small. Rostral broader than deep, visible from 

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

 than the prsefrontals ; frontal once and two thirds to twice as long 

 as broad ; frontal as long as or a little longer than its distance from 

 the end of the snout, slightly shorter than the parietals ; loreal as 

 long as deep or deeper than long ; one prae- aiid two postoculars ; 

 temporals 1 + 2; eight upper labials, fourth and fifth entering the 

 eye ; five lower labials in contact with the anterior chin-shields, 



