= 
, a in ie 
”< t 
200 4 COLUBRID. 
Body cylindrical ; scales smooth, without pits, in 15 to 25 rows; 
ventrals rounded or obtusely angulate laterally. Tail moderate or 
long; subcaudals in two rows. 
_ Tropical America, Mexico, Texas. 
Synopsis of the Species. 
I. Scales in 15 rows; ventrals 172-204; subcaudals 38-61 ; seven 
upper Inbiale®. 2200. oe, a. 1. esculapii, p. 200. 
IL. Scales in 17 rows; ventrals 166-173; subcaudals 50 or more; 
seven upper labials. 
Loreal as long as deep .......+.00005 2. decipiens, p. 204. 
Loreal much longer than deep ........ 3. grammophrys, p. 204. 
III. Scales in 19 rows; ventrals 120-143; subcaudals 67-94. 
Seven upper labials; frontal nearly as 
broad as long; loreal square ...... 4, lateritius, p. 205. 
Eight or nine upper labials; frontal 
much longer than broad; loreal deeper 
than Wong i... is Ss sesh es seve cede 5. dromiciformis, p. 205. 
Eight (exceptionally seven) upper labials; 
frontal longer than broad .......... 6. imperialis, p. 206. 
IV. Scales in 21 rows; ventrals 117-142; subcaudals 64-94; 
eight upper labials. 
Internasals more than half the length . . 
of the prwfrontals ............++.. 7. fissidens, p. 207. 
Internasals not more than half thelength 
-of the prefrontals ............005. 8. bipunctatus, p. 208, 
V. Scales in 25 rows; ventrals 158-169; subcaudals 82-93; 
eight upper labials ............ 9. piceivittis, p. 209. 
1, Erythrolamprus exsculapii. 
Coluber eesculapii, Linn. Mus. Ad. Frid. p. 29, zs xi. fig. 2 (1754), 
and S, N. i. p. 380 (1766) ; Duvernoy, Ann, Sc. Nat, xxvi. 1832, 
p- 151, and xxx. 1833, p. 15, pl. iv. fig. A. 
—— agilis, Linn. ll. ce. p, 27, pl. xxi. fig. 2, and p. 381. 
Natrix esculapii, Laur, Syn. Rept. p. 6 (1768). 
Coluber nigrofasciatus, Lacép. Serp. ii. pp. 98 & 188 (1789). 
—— atrocinctus, Daud. Rept. vi. p. 38 (1803). 
Ae a on Wied, Reise Dens ii, p. 75 (1821), and Abbild, 
—— binatus, Licht. Verz. Doubl. p. 105 (1828). 
oe Parco mag Wagl. in Spx, Serp. Bras. p. 6, pl. ii.a. fig. 2 
ee venustissima, Schleg. Phys. Serp. ii. p. 53, pl. ii. figs. 1-3 
( 
Fythralamprs eesculapii, Dum. § Bibr. vii. p. 845 (1854) ; Cope, 
roc, Ac. Philad., 1860, }; 259; Jan, Arch. Zool. Anat. Phys. ii. 
1863, p. 815, and Icon. Gén. 19, pl. ii. figs. 2 & 3 (1866) ; Giinth. 
Biol. C-Am., Rept. p. 166 (1895). 
