390 PROCEEDINGS OF THE NATIONAL MUSEUM VOU, 92 
second scale rows; the dorsal spots coincide in position with the 
lateral spots throughout the body. 
Dorsal spots on tail about 38, becoming smaller and less distinct 
distally ; large, dark brown stipple marks on belly and subcaudal sur- 
face, except on neck, chin and gular region, which are immaculate. 
TABLE 2.—Variation in Imantodes s. oliveri 
Number Sex | Ventrals | Caudals puprale; bees Body spots 
2443 Fo ase fe) 230 125 8-8 38-45 54 
SOUG4 ses seo °) 229 V7 8-8 4-5 59 
SOLG5S Re 2a e) 229 118 8-8 4-5 67 
30166_______- e) 234m | tea leees sees 8-8 4-5 52 
SUITS aa ey Q 227 130 8-8 3-4-5 58 
SOM OR en 2 220) Sees Sere 8-8 3-4-5 47 
30386... =. °) 2249) eee ee 6-8 4-5 47 
SOSS(a ee Q 222 130 8-8 4-5 59 
TNOS28 22 Q 226 121 8-8 3-4-5 55 
2190 Q Oils res epee 8-8 3-4-5 61 
ZiS00s ses e) 222 127 8-8 3-4-5 58 
Oliver_____-_ Q 231 133 S38) eee 67 
Werner-_-_-____ Q 230 1 a eit rl (Ng ee Yo 50 
B0S8S see as rot 2300 vee oe 8-8 3-4-5 60 
ZS OLS wee fou 234 137 8-8 3-4-5 67 
SZO005m ee ‘of 230 134 Se ee ee ee Be Pe ee Le 
Range.—Pacific lowlands from western Chiapas northward, prob- 
ably to Nayarit. Definite records, however, are lacking for the area 
between central Oaxaca and Colima. 
Remarks.—Werner’s record from Nayarit may not be referable to 
this race ; it possibly should be referred to /atistratus. 
The species is named for Dr. James A. Oliver, in recognition of 
his studies on the genus. 
IMANTODES TENUISSIMUS Cope 
Himantodes tenuissimus Corr, Proc. Acad. Nat. Sci. Philadelphia, 1866, p. 317 
(Yucatan). 
Imantodes gemmistratus ScuHmipt and ANDREWS, Field Mus. Nat. Hist., zool. 
ser., vol. 20, pp. 177-178, 1936. 
Imantodes tenuissimus HARTWweEG and OLivER, Mise. Publ. Univ. Mich. Mus. Zool., 
no. 47, p. 24, 1940. 
Diagnosis—Vertebrals not at all enlarged; caudals 143 to 158; 
ventrals 240 to 252; bands well defined throughout body, not or rarely 
broken posteriorly, separated from each other by about half their 
length or more. 
Range.—Yucatan. 
Specimens examined.—Two. 
