252 COLUBRID ®. 
1. Arrhyton teniatum. (Prare XII. fig. 2.) 
Arrhyton teniatum, Giinth. Cat. p.244 (1858); Cope, Proc, Ac. Philad. 
1860, p. 421; Gundl. Repert, Fis.-Nat. Cuba, ii. 1866, p. 116, and 
Erp. Cubana, p. 75 (1880). 
Arrhyton fulvum, Cope, Proc, Acad. Philad. 1862, p. 82. 
Rostral twice as broad as deep, visible from above; nasal semi- 
divided; suture between the internasals hardly half as long as that 
between the preefrontals ; frontal slightly longer than broad, thrice 
as broad as the supraocular, as long as its distance from the end of 
the snout, shorter than the parietals ; no loreal, preefrontal in con- 
tact with second labial; one pre- and two postoculars ; temporals 
1+2,; seven upper labials, third and fourth entering the eye; four 
lower labials in contact with the anterior chin-shields, which are 
longer than the posterior. Scales in 17 rows. Ventrals 171; anal 
divided; subcaudals 75. Yellowish; upper surface of head and 
three longitudinal streaks brown ; lower parts white. 
Total length 230 millim. ; tail 50. 
Cuba. 
@ Her, (VY. 171; ©. 75). Cuba. Zoological Society. 
(Type-) 
2. Arrhyton vittatum. 
Cryptodacus vittatus, Gundl. & Peters, Mon. Berl. Ac. 1861, p. 1002; 
Cope, Proc. Ac, Philad. 1862, p. 589; Gundl. Repert. Fis.-Nat. 
Cuba, ii. 1866, p. 116; Bocourt, Miss. Sc. Mex., Rept. p. 561, 
pl. xxxv. fig. 7 (1883). 
Arrhyton bivittatum, Cope, Proc. Acad. Philad. 1862, p. 82. 
Rostral twice as broad as deep, visible from above; nasal undi- 
vided ; suture between the internasals shorter than that between 
the prefrontals ; frontal as long as broad or a little longer, much 
broader than the supraocular, as long as its distance from the end of 
the snout, a little shorter than the parietals ; loreal square or longer 
than deep; one pre- and two postoculars ; temporals 1+2; seven 
upper labials, third and fourth entering the eye; four lower labials 
in contact with the anterior chin-shields, which are as long as or 
longer than the posterior. Scales in 15 or 17 rows. Ventrals 
115-116 ; anal divided; subcaudals 64-73. Yellowish above, with 
three brown longitudinal lines, the median sometimes indistinct ; 
yellowish white inferiorly. 
Total length 297 millim. ; tail 105. 
Cuba. 
3. Arrhyton redimitum. 
Colorhogia redimita, Cope, Proc. Ac. Philad. 1862, p. 81. 
Cryptodacus redimitus, Bocourt, Miss. Sc. Mex. Rept. p. 561, 
pl. xxxv. fig. 8 (1888). 
Nasal undivided; prefrontals fused to a single shield; frontal 
broad, as broad as long, shorter than the parietals; loreal longer 
