MEXICAN HERPETOLOGICAL MISCELLANY—SMITH 391 
KEY TO MEXICAN IMANTODES 
1. Vertebral scales greatly enlarged, three to four times as wide as adjacent 
dorsals; bands symmetrical, usually not broken on sides of body posteriorly. 
cenchoa leucomelas 
Vertebral scales not enlarged or at most about twice as wide as adjacent 
SS CLL Coss Sea ee ene a Rye ee 2 
aaVentrals = 24 OM Oram OTes= =e. 2 ese ee Le ae ee ee 3 
Mentral Se 2oO ml Ole TCWeL™ sammie antes a on eioe ee a ee t 
3. Posterior dark bands on body broken laterally, poorly defined ; spaces between 
anterior cross bars less than one scale length____________-____ gracillimus 
Bands distinct and symmetrical over all of body, usually none broken. on sides 
of body, all involving ends of ventrals or subcaudals; spaces between cross- 
bands half the length of the bands, or greater___-_____--_____- tenuissimus 
4. Vertebrals about twice as wide as adjacent scales____-_--_____ gemmistratus 
Vertebrals not or but slightly enlarged, not twice as wide as adjacent 
GOTSal Si Pheeeds tate. aes 8h is ee eres eh Ne ie Be Te 8 a 5 
5. Bands with nearly straight anterior and posterior edges, very little if any 
narrower laterally than dorsally; bands not broken on sides of body, but 
becoming much less distinct toward tail, sometimes indistinguishable; 
VENLEAIS O2ostOg ooo re ea ee eee) ae oe ee ee hele eee latistratus 
Bands narrower on sides of body than on middorsum, at least the posterior 
ones broken laterally, and all very distinct and not becoming notably 
LANte RCO Wel dertel se ek Me Se ee eee 6 
6. Body bands 34 to 39, only those on extreme posterior part of body broken 
laterallyes ventrals 198):t0) 2OlSe a eee splendidus splendidus 
Body bands 48 or more, broken laterally on at least posterior half of body, 
sometimes on posterior two-thirds; ventrals 205 or more___-__--~---_ 7 
7. Body bands 47 to 67, average 57, broken laterally on all except anterior third 
of body; ventrals 222 to 285, average 229_____________ splendidus oliveri 
Body bands 43 to 52, average 46, broken laterally only on posterior half of 
body; ventrals 205 to 225, average 219____________ splendidus luciodorsus 
8.—TWO NEW SNAKES OF THE GENUS CLELIA 
Among the very important discoveries of Dyfrig McH. Forbes of 
Potrero Viejo, Veracruz, is a rare specimen, generously presented to 
me in 1939, belonging to the pethola group of Clelia. This is the third 
known from Mexico, and apparently the first in American collections. 
Its characters do not agree with those of Central American specimens, 
and no name for it is available. It is a pleasure to associate with it 
the name of Dr. Joseph R. Bailey, in whose hands the genus is in the 
process of intensive study. 
CLELIA BAILEYI, new species 
Holotype.—U.S.N.M. No. 111261, female, from Potrero Viejo, Vera- 
cruz, collected by Dyfrig McH. Forbes. 
Diagnosis —Subcaudals divided; supralabials eight; preocular in 
contact with frontal; ventrals 191, caudals 89 in type; 23 crossbands 
on body, 18 on tail, in type; body bands covering four to five scale 
