14. HELICOPs. 275 
shorter than the parietals; loreal trapezoid; one pre- and two 
postoculars ; parietal in contact with the sixth labial; temporals 
1+2; eight upper labials, third and fourth entering the eye; five 
lower labials in contact with the anterior chin-shields, which are 
shorter than the posterior. Scales perfectly smooth, in 19 rows. 
Ventrals 132-146; anal divided; subcaudals 45, Dark olive- 
brown, with two broad paler stripes; lower parts uniform yellow. 
Total length 530 millim. ; tail 100. 
a-b. 2 (V. 146,132; C.?, Duque de Bragance. Prof. Barboza du Bo- 
45). cage [P.]. (Types.) 
3. Helicops septemvittatus. 
Calopisma SSR age Fischer, Verh. naturw. Ver. Hamb. (2) iii. 
1879, p. 84, pl. i. fig. 3. 
oe is septemvittatus, Cope, Proc. Am. Philos. Soc. xxii. 1885, 
P- 
Eye rather small; rostral visible from above, forming a suture 
with the internasal ; frontal nearly twice as long as broad, widening 
behind, longer than its distance from the end of the snout, shorter 
‘than the perc; ; loreal deeper than long; one prae- and two 
; temporals 1+2; eight upper labials, fourth entering 
the eye; five lower labials in contact with the anterior chin-shields, 
which are longer than the posterior. Scales perfectly smooth, in 
19 rows. Ventrals 122-130; anal divided; subcaudals 53-73. 
Brown above, with four black stripes ; belly yellowish white, with 
three black stripes. 
_ Total length 238 millim. ; tail 73. 
- Mexico. 
4. Helicops allenii. 
pote allenii, rhe Proc. Bost. Soc. N. H. xvii. 1874, p. 92, 
and N. Am. t. p. 34, pl. vii. fig. 4 (1883). 
Liodytes allenii, Cope, Proc. U.S. Nat. Mus. xiv. 1892, p- 667, 
Eye rather small, half the length of the frontal. Rostral broader 
than deep ; nasals in contact behind the rostral; frontal once and 
two thirds to twice as long as broad, much longer than its dis- 
tance from the end of the snout, shorter than the parietals; loreal 
trapezoid ; one pre- and three postoculars ; temporals 1+2 ; eight 
upper labials, third and fourth entering the eye; posterior chin- 
shields longer than the anterior. Scales in 19 rows, smooth or 
faintly keeled on the body, distinctly keeled on the tail. Ventrals 
121-128; anal divided; subcaudals 58-63. Light reddish brown 
above, with a dark brown vertebral stripe five scales wide; a 
narrower dark brown stripe on each flank; upper lip and lower 
yellowish. 
Total length 400 millim.; tail 110, 
Florida. 
a. § (V.121; 0.63). Lake Kerr, Florida. A. Erwin Brown, Esq: 
r2 
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