APPENDIX. 361 
internal nares; green; in the typical form with a distinct narrow 
yellowish line along sides of head and body, on outer edge of fore 
limb and posterior edge of hind limb; no bars on limbs; under- 
neath yellowish white. L. 45-60 mm. South. U. S. north to 
D.C. (Lat., ashy.) 
Ciass oF REPTILES. 
[The following additional species are given on the authority of Dr. 
Stejneger.] 
Page 193: 
547 b. Thamnophis brachystomus (Cope). Lateral stripe on 
2d and 3d scales ; tail 4 in length; scales in 19 rows; V. P. 132; 
six upper labials, 8 lower ones; color, below and upper lip light 
olive, unspotted, above darker olive, with a brown band on each 
side which extends from the fourth to the middle of the ninth row 
inclusive, leaving a pale dorsal stripe of ground color one and two 
half scales wide. L. 286 mm. One specimen from Venango Co., 
Pa. (Gr., short-mouth.) 
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272 b. Tantilla (Baird and Girard). (Subfam. Scytaline) (name 
unmeaning). Posterior maxillary tooth enlarged, grooved. Head 
but slightly distinct; pupil round; no scale-pits; no loral; scales 
smooth; anal plate bifid. 
537 b. T. gracilis (Baird and Girard). 6 supralabials. Color 
above pale brownish gray, head darker; sides and lower surface 
cream-color to dull scarlet; scale rows 15. V. P. 112-133. L. 
195 mm. Mo. to Texas. 
Page 192. 
275 c. TROPIDOCLONIUM Cope. (rpdms, keel; kdwviov, 
twig.) 
This genus differs from Clonophis in the entire anal plate (bifid 
in Clonophis). 
541 b. T.lineatum (Hallowell). StREaAKED Snake. Anal plate 
entire; 17 to 19 scale rows; color drab above with a light vertebral 
line bordered on each side by a series of black spots and a similar 
lateral stripe on 2d and 3d scale rows; underneath whitish with two 
longitudinal series of black spots. Sixth upper labial does not reach 
the commissure. V. P. 138-150. L. 300 mm. IIL, Ia., Mo., to 
Texas. 
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564 b. Bascanion flagellum (Shaw). Coacn-Wnip SNAKE, 
8 superior labials; frontal plate very narrow behind, only half the 
width of the supraocular. Adult more or less uniform; pale be- 
