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: 
COLUBRID. — CX. 197 
a yellowish one; the lines of each pair separate on sides and be- 
come confluent with the nearest one of adjacent pair; head red. 
Seales 21. V.P.180 to 210. L.30to 50. Md. to Kan. and S.; 
exceedingly variable, running by degrees into the following varie- 
ties, extremes of which bear little resemblance to the typical 
doliatus. (lat., sorrowful.) 
Var. coccineus Schlegel, the black rings not confluent and usually 
meeting on belly. S. Ill. to Fla. and W. 
Var. triangulus (Boie). Mritk Snake. Housr SNAKE. Spor- 
TED ADDER. Grayish, with three series of brown, rounded 
blotches bordered with black, about fifty of them in the dorsal 
row ; an arrow-shaped occipital spot; belly with square black 
blotches. Va. to Iowa, and N.; very common. 
aa. Dorsal scales in 25 rows. 
571. O. rhombomaculatus (Holbrook). Light chestnut, back 
and sides with 3 series of darker rhomboidal blotches, about 50 in 
dorsal series; belly obscurely blotched. V. P. 200 to 205. Ill. to 
N. C. and S. 
572. O. calligaster (Say). Light olive gray, with about sixty 
quadrate, chestnut colored, emarginate blotches on back and two 
rows of smaller ones on each side. Ill. to Kansas and 8. (kadds, 
beautiful ; yaornp, belly.) 
286. OSCEOLA Baird & Girard. (Name of an Indian chief.) 
573. O. elapsoidea (Holbrook). Scaritet SNAKE. Brilliant 
red, with about 18 pairs of jet black rings on body and three on 
tail, each pair enclosing a white ring; the black rings tapering to- 
wards the sides, the white ones spreading ; a yellow collar on upper 
part of neck, bordered by black lines; rostral plate very broad ; 
resembles closely O. doliatus. Scales 19. V.P.175 to 180. L. 20. 
Va. to S. Ill. and 8. 
287. CEMOPHORA Cope. (xnyos, muzzle; dopos, bearing.) 
574. C. coccinea (Blumenbach). Crimson, with 20 to 26 black 
rings enclosing yellow ones; yellowish below. V. P. 160 to 170. 
S., N. to S. Ohio and Ark. (Lat., crimson.) 
288. HETERODON Beauvais. (€repos, different; éSav, tooth.) 
a. Vertical plate in direct contact with frontals. 
575. H. platyrhinus Latreille Spreapinc AppER. BtLow- 
ING Viper. Brownish or reddish, with about 28 dark dorsal 
blotches. besides lateral ones and half rings on the tail; often (var. 
niger) uniform black. Vertical plate longer than broad, about 
equal to occipitals. L. 30. V.P.120 to 150. Scales 23 or 25. 
E. U.S., abundant. <A very variable species; when angry it de- 
