106 OPHIDIA. 
The teeth are equal, the scales smooth and poreless, the anal plate divided; nasals 
two, loreal one; one pre-, two postoculars. Scales in nineteen series. Upper labials 
eight, not elevated, the fourth and fifth entering the orbit. Temporals 1+2 +3. Anterior 
frontals transverse, narrow ; postnasal larger than prenasal. Vertical wide ; superciliary 
suture shorter than anterior, total length exceeding that of occipital suture. Loreal 
square; geneials subequal. Ventrals 164, subcaudals 78. Dark brown, with six longi- 
tudinal yellow or white lines, of which the first and second are brightest. ‘The second 
dark band is wider than the first and vertebral ; it and the third are partly divided by 
a faint white line. Another white line on each side is produced by a series of dark 
spots on the ends of the gastrosteges. Labial plates black, yellow-spotted. Head 
dark brown above, with a pale shade across frontal, and two just behind parietals. 
Chin and belly yellowish. . 
ELAPOCHRUS. 
Elapochrus, Peters, MB. Ak. Wiss. Berl. 1860, p. 294: 
Pliocercus, Cope, Proc. Ac. N. Sc. Phil. xii. p. 253 (1860). . 
1. Elapochrus deppii. 
Elapochrus deppii, Peters, MB. Ak. Wiss. Berl. 1860 (June 7), p. 294, ¢. fig. 
Pliocercus elapoides, Cope, Proc. Ac. N. Se. Phil. 1860 (June 26), p. 253; Peters, MB. Ak. Wiss. 
Berl. 1869, p. 876; F. Mill. Verh. naturw. Ges. Basel, 1878, p. 596. 
Liophis elapoides, Garman, Mem. Mus. Comp. Zool. viii. no. 8, p. 69 (1883) ; Bocourt, Miss. Se. 
Mex., Rept. p. 635, t. 41. figg. 6, 6 a-e. 
Liophis elapoides, var. diastema, Bocourt, l. c. p. 686, t. 41. fig. 8. 
Liophis tricinctus, Jan, Iconogr. Ophid. xviii. t. 4. figs. 4-6. 
Hab. Muxtco, Puebla (Commiss. Geogr.), Vera Cruz, Orizaba (Sumichrast), Mirador 
(Smiths. Inst.), Jalapa (Smiths. Inst.) ; Guatemata, Duefias (Salvin). 
9. Blapochrus equalis. (Tab. XXXVI. fig. A.) 
Pleiocercus equalis, Salvin, P. Z. 8. 1861, p. 227. 
Pliocercus equalis, var., F. Mill. Verh. naturw. Ges. Basel, 1878, p. 662, t. 2. fig. A. 
Pliocercus sargii, Fischer, Wiegm. Arch. 1881, p. 225, t. 11. figs. 1-38. 
Liophis elapoides, var. equalis, Bocourt, Miss. Sc. Mex., Rept. p. 687, t. 41. figg. 7, 7 a-e. 
Hab. Mexico, Tezuitlan, Puebla, Tuxpan (Commiss. Geogr.) ; Guatemala, Vera Paz 
(Salvin), Coban (Sarg). 
Body moderately slender, tail very long; head depressed, anterior frontals one-third 
the size of posterior; vertical five-sided, with a right posterior angle ; occipitals as 
long as vertical and posterior frontals together. Eight upper labials, the fourth and 
fifth entering the orbit ; loreal rhombic; three preoculars, the lower one being a 
detached portion of the fourth labial; two postoculars. Scales in seventeen rows, 
without pit; ventrals 131, anal divided; subcaudals 92+” (the. tail is slightly 
