11. tAcrssrs. 567 
Total length 375 millim. ; tail 60. 
Guatemala. 
a. Yg. (V. 166; C. 67). S. Augustin, W. Paris Mus, [E.}. ‘ 
Guatemala. (One of the types.) 
38. Lachesis schlegelii. 
Trigonocephalus schlegelii, Berthold, Abh. Ges. Wiss. Gétting. iii. 
1846, p. 13, pl. i. figs. 5 & 6. 
Lachesis nitidus, Giinth. Proc. Zool. Soc. 1859, p. 414, pl. xx. fig. C. 
Teleuraspis schlegelii, Cope, Proc. Ac. Philad. 1859, p. 338, and 
Journ, Ac, Philad (2) viii. 1876, p. 149, pl. xxvii. fig. 2; R. Blanch. 
Bull. Soe. Zool. France, 1889, p. 348. 
—— nitida, Cope, Proc. Ac. Philad. 1860, p. 345. 
Bothrops schlegeli, Jan, Elenco, p. 127 (1863), and Icon. Gén. 47, 
pl. vi. fig. 2 (1875). 
—— (Teleuraspis) nigroadspersus, Steind. Sitzb. Ak. Wien, \xii. i. 
1870, p. 348, pl. viil. 
Teleuraspis nigroadspersus, Garm. N. Am. Rept. p. 126 (1883). 
Thanatophis torvus, Posada-Arango, Bull. Soc. Zool. France, 1889, 
p. 345. 
Bothriechis schlegelii, Giinth, Biol. C.-Am., Rept. p. 189 (1895). 
Snout rounded, with sharp canthus. Rostral as deep as broad 
or broader than deep; nasal entire or semidivided; upper head- 
scales more or less strongly keeled, rarely smooth on the snout and 
vertex; a large supraocular shield, separated from the eye by small 
scales, two or three of which may be enlarged, erect, and horn-like ; 
5 to 9 longitudinal series of scales between the supraoculars ; two 
or three series of scales between the eye and the labials ; temporal 
scales keeled; 8 or 9 upper labials, second forming the anterior 
border of the loreal pit, third or fourth largest. Scales more or 
less strongly keeled, in 19-25 rows. Ventrals 138-162; anal 
entire; subcaudals 47-62, single. Tail prehensile. Coloration 
very variable. Green or olive above, speckled or spotted with 
black, or with pinkish, reddish, or purplish, black-edged spots or 
cross-bars; a series of yellow spots usually present on each side 
close to the ventral shields; belly yellow, spotted with green, or 
green speckled with black and yellow, or variegated yellow, olive, 
purple, and black; end of tail usually red. 
Total length 600 millim. ; tail 115, 
Central America, Colombia, Ecuador. 
a, Hgr. (Se. 21; V.159; Guatemala. F. D. Godman, Esq. 
C. 62). [P.]. 
b-d. $ (Se. 21,23; V.157, Hacienda Rosa de Dr. KE. Rothschuh 
155; OC. 57, 56) & Q Jericho, Nicaragua. ([C.]. 
(Se. 23; V. 154; C. 50). 
é. 6.86) (Se. 28; V. 155; Matagalpa, Nicaragua. Dr. E, Rothschuh 
. 60). [C, ]. 
f-h. Hgr. (Se. 23; V.147; Chontalez, Nicaragua. R. A. Rix, Esq. [C.]; 
C.49) & ye. (Se. 25, 25; W. M. Crowfoot, 
V. 151, 150; C. 48, 54). Esq. [P.]. 
