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te 
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10. TRoPrmonorts. 241 
faintly keeled. Ventrals 156-173; anal divided; subcaudals 45- 
65. Olive-brown above, uniform or with a lighter black-edged 
vertebral stripe; a broad yellowish or pale olive, black-edged stripe 
along the three outer rows of scales; upper lip and lower parts 
yellowish, with or without a median black line or series of spots 
along the belly and tail. 
Total } 880 millim.; tail 130. 
North America, from Wisconsin and Michigan to Louisiana and 
Texas; North Mexico. 
a. Yg. (Se. 19; V. 157; C. 55). New Orleans. 
b. 9 (Se. 91; V. 158; 0,52). N. America. 
© Se. 19; V. 163; C. 45). Mexico. 
d-e. 2 (Se. 21; V. 168, 153; —~>: 
C. 53, 68). 
43, Tropidonotus ferox. 
ee mortuarius (non Daud.), am ae p- 96 (1820). 
idonotus mortuarius, Schleg. 8. . li. p. 330 (1 : 
eee da Pholed. 1868, p. 309. s ai ag dee >. 
— ferox, Giinth. Ann. § Mag. N. H. (3) xii. 1863, p. 355, pl. vi. 
"fig. F, and (4) ix. 1872, p. 27; F. Miill. Verh. nat. Ges. Peasel, 
vil. 1885, p. 682. 
Helicops mortuarius, Jan, Arch. Zool. Anat. Phys, iii, 1865, p. 246, 
and Icon. Gén. 28, pl. i. fig. 2 (1868). 
Eye rather small. Rostral twice as broad as deep, just visible 
from above; nasal semidivided; internasals much narrowed in 
front, with concave outer border, as long as or longer than the 
preefrontals ; frontal once and one third to once and a half as long 
as broad, as long as its distance from the end of the snout, shorter 
than the parietals; loreal as long as deep or deeper; one or two 
and two postoculars ; two ,to four suboculars, separating the 
eye from the labials; temporals 142; nine upper labials; five 
lower labials in contact with the anterior chin-shields, which are 
shorter than the posterior. Scales very strongly keeled, in 21 to 27 
rows. Ventrals 137-155; anal divided; subcaudals 60-73. Dark 
olive or reddish brown above, with or without black transverse 
spots ; belly yellowish or bright orange, usually with a lateral series 
of black spots ; the ventral shields may be partly or entirely edged 
with black. 
Total length 750 millim. ; tail 175. 
West Africa, 
A. Scales in 21 rows. 
a. § (V.147; 0.73). Fernando Po. (Type.) 
B. Scales in 23 rows. 
b. Her. (V.189; C.70). Adjah Bippo, Wassau, G. A. Higle ‘ 
dita, oom Oo ae 
ce. d (V. s 6. town R. Di fC. 
9 ap 161; 6 , : oer Eee 
ye. (V. 150; ©. 6). 
VoL. 1. R 
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