302 COLUBRIDA. 
** Seven upper labials. 
Frontal a little broader than long .... 18. reticulatus, p. 311. 
Frontal once and a half as broad as 
PE Pt en Rein aie oso Renin Git bien ux eid 19, emmeli, p. 311. 
3. Snout more or less pointed; ventrals 125-150; sub- 
pandals 11-19 ei ease aie 20. trilineatus, p. 312. 
3. A single pair of very large chin-shields; anal divided. 
21. quadrivirgatus, p. 312. 
II. Symphysial shield in contact with the chin-shields; tail long 
ANG GBLGK 280 rosin e's os eile ele 22. fave, p. 313. 
TABLE sHowina NumBERS oF SCALES AND SHIELDs. 
Scales. | Ventrals. | Anal. ees Labials. es 
BUDS iceccceeacescvecsee 15 144-167 1 23-37 6 1 
CAUEFONS sa.coeenesss Vi 142-150 1 85-40 6 1 
MOESTUS § aecerecerers 17 173 1 38 6 2 
ABLLOLUS «.2ccesecne ses 15 148 1 18 8 1-2 
latifrontalis ......... 17 172-179 1 24-32 6 1-2 
Tongiceps ...1...0.+0 17 173 1 28 6 1 
POTUVIANUS s,s seaeee 17 140 1 31 6 2 
GUentheri ....crseeees il7/ 143-158 1 19-33 if 2 
GOCOUTEL 6.2.06 .e000.0s 17 175-191 1 25-39 7 2 
MACULALUS ...ceceeeres il7/ 148-159 1 21-26 7 2 
TET OR edo cos'e aston st 17 163-182 1 30-45 7 2 
USEMIMICUS ....ceeeeree 17 160 1 34 7 2 
WEGOUS | chccenoss cee 17 143-160 if 20-47 7-8 2 
LOTQUATUS ....eeeeeeee 17 140-165 1 35-47 8 1 
crassicaudatus ...... 17 146-161 1 19-27 6-7 2 
UBOISEs oscascsestneess 15 150-172 1 16-82 8 2 
occipitoalbus ......+ 15 150 1 22 8 2 
TELICULATUS. .. 20000000. 15 156 1 26 7 2 
BMEIG) « oaateeene gee 15 167-170 1 28-380 7 2 
trilineatus ......s00+++ 15 125-150 1 11-19 7-8 1-2 
quadrivirgatus ...... 15 126-144 2 25-43 7 2 
RAIA Berea vcs sna avee 17 171-185 1 58-66 7 2 
1. Atractus elaps. 
Rhabdosoma elaps, Giinth. Cat. p. 241 (1858), and Zool. Rec. 1865, 
p- 151. 
Rabdosoma brevifrenum, Jan, Arch. Zool. Anat. Phys. ii. 1862, 
p. 12, and Icon. Gén. 10, pl. iv. fig. 1 (1865). 
Geophis elaps, Giinth. Ann. § Mag. N. H. (4) i. 1868, p. 415. 
Snout rounded. Rostral rather large, broader than deep, the 
ortion visible from above at least half as long asits distance from 
the frontal; internasals nearly twice as broad as long; frontal 
as long as broad or a little broader than long, as long as its distance 
