114 OPHIDIA. 
7. Dromicus lachrymans~*. 
Lygophis lachrymans, Cope, Proc. Am. Phil. Soc. xi. p. 154 (1871). 
Rhadinea lachrymans, Cope, Journ. Ac. N. Sc. Phil. viii. p. 140 (1875) ; and Bull. U.S. Nat. Mus. 
no. 32, p. 30. 
Hab. Cuntrat Mexico (Cope). 
XENODON. 
Xenodon, Boie, Isis, 1827, p. 541. 
1. Xenodon rhabdocephalus. 
Coluber rhabdocephalus (part.), Wied, Beitr. p. 355. 
Coluber rhabdocephalus, Wied, Abbild. x. t. 4. 
Xenodon rhabdocephalus, Schleg. Ess. t. 3. figg. 10,11; Giinth. Ann. & Mag. N. H. 1868, xu. 
p. 353, t. 5. fig. B; Jan, Iconogr. Ophid. xix. t. 4. fig. 1. 
Hab. Mexico, Amula in Guerrero ({. H. Smith); British Honpuras (Jfus. Brit.) ; 
GuaTEMALA, San Gerdnimo (Salvin).—Soutu America, Guiana, Brazil, Argentine 
Republic. 
2. Xenodon angustirostris. 
Xenodon angustirostris, Peters, MB. Ak. Wiss. Berl. 1864, p. 390; Cope, Journ. Ac. N. Sc. Phil. 
vill. pp. 141, 157 (1875), and Bull. U. S. Nat. Mus. no. 32, p. 76 (1887). 
Hab. GuaTemata (Cope); Costa Rica, Sipurio (Gabb); Panama (Cope), Veragua 
(Peters). 
I have not seen an example of this species; but suppose that at least some of the 
specimens referred to it by Cope would have been named X. rhabdocephalus by 
myself +. 
COLUBER. 
Coluber, Giinther, Col. Sn. p. 87 (1858). . 
1. Coluber guttatus. 
Coluber guttatus, Linn. Syst. Nat. i. 1, p. 885; Giinth. Cat. Col. Sn. p. 89. 
Scotophis guttatus, emoryi, letus, etc., Baird & Girard, Cat. N. Amer. Sn. pp. 75 etc. 
Elaphis guttatus, Dum. & Bibr. Erpét. vii. p. 273 ; Jan, Iconogr. Ophid. xxi. t. 6. 
Scotophis guttatus, Bocourt, Miss. Sc. Mex., Rept. p. 678, t. 46. figg. 4, 4 a-e. 
Natrix emoryi, Cope, Bull. U. S. Nat. Mus. no. 82, p. 71. 
* The information about this snake is very unsatisfactory. In one place it is described as having 78 sub- 
caudals, whilst in another the number 60 is given as characteristic. The locality is at first stated to be 
unknown, but later it is said to be “‘ Middle Mexico.” 
+ Jan, Iconogr. Ophid. xix. t. 4. fig. 2, figures a Xenodon bertholdi from * Mexico.” This is, without doubt, 
identical with X. colubrinus, Giinth., a Brazilian species, the locality given by Jan resting upon an error. 
