BARBOUR: AMPHIBIA AND REPTILIA. 133 
To this recently described subspecies three specimens taken by Mr. Zappey 
may be assigned. Two are from Ichang, from whence specimens have been 
recorded from the collection of the British museum (Stejneger, loc. cit., p. 454). 
The scales run 21 rows; 145 ventrals, 39 subcaudals, and 7 labials for one, the 
other is mutilated. The third specimen comes from Kweichowhsien, Hupeh. 
Scales in 21 rows; 141 ventrals; 35 subcaudals, and 7 labials. 
Occurs in Korea, eastern and part of central and of western China, Formosa, 
and possibly Hainan. 
AGKISTRODON TIBETANUS, sp. Nov. 
Plate 2, Fig. 3, 4. 
Type:— No. 7327 M. C. Z. Ramala Pass beyond Tachienlu, western Sze- 
chwan: altitude 13,000 feet. W. R. Zappey. 
Rostral as high as broad, scarcely visible from above; internasals large, 
roughly triangular, their suture almost as long as that of prefrontals, which are 
broadly in contact with supraoculars; frontal longer than broad, as long as the 
distance from rostral supraoculars, as long as frontal but narrower; parietals 
considerably longer than supraoculars; nostril round in the posterior part of 
the anterior nasal, which is slightly larger than the posterior; two loreals, one 
above the other, the lower one bordering the pit anteriorly; a narrow subfoveal 
enters the orbit with two preoculars, one of which also borders the pit posteriorly; 
pit very near eye, in fact meeting the orbit; two postoculars, of which the lower 
is long, narrow, and concentric, reaching far under the eye, but not approaching 
the scales behind the pit, as in A. blomhoffit; 2 + 4 temporals, of which the 
lower ones in each row are large hexagonal shields, those above being small 
seales (none keeled as in A. blomhoffit); the lower temporal of the third row large 
and shaped like those in front of it; the three lower temporals forming a series 
of large shields, larger than the adjoining labials; seven upper labials, second 
smallest, third and fourth very large, the rest gradually diminishing in size 
posteriorly; the third enters the eye for its entire superior margin, chin shields 
as in Stejneger’s figure of the ventral view of head of A. blomhoffii (Bull. 58, 
U.S. N. M., 1907, p. 458, fig. 364); twenty-one rows of keeled scales, usually 
with indistinct apical pits; 152 ventrals; anal entire; 43 subcaudals, all divided. 
The color is worthy of somewhat extended notice. The whole back is dull 
green with rhombic darker markings. Lower surfaces mottled black and dark 
grayish. Lower row of scales with light spots which alternate with light spots 
