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. blomhoffii; 2+4 temporals, of which the 

 lower ones in each row are large hexagonal shields, those above being small 

 scales (none keeled as in A. blomhoffii) ; 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 



