HERPETOLOGY OF JAPAN. 



463 



List of specimens of Aqkisirodon blomholJii ? affinis. 



a Description, p. 462; fig. 365. 

 AGKISTRODON BLOMHOFFII BREVICAUDUSo, new subspecies. 



1856. Trigonocephalas blomhojfii Hallowell, Proc. Phila. Acad., 1856, p. 153 

 (Ningpo, China) (not of Boie, 1826).— IfaZys hlomhoffii Guenther, Kept. 

 Brit. India, 1864, p. 393 (part: Formosa).— Svvinhoe, Proc. Zool. Soc. 

 London, 1870, p. 412 (Ichang, China).— Giglioli and Salvadori. Proc. 

 Zool. Soc. London, 1887, p. 594 (part: Fusan, Korea). —Andstrodonhlom- 

 hoffii BouLENGER, Cat. Siiakes Brit. Mus., Ill, 1896, p. 525 (part: For- 

 mosa; Hainan, Chekiang, Ichang, Mts. north of Kiukiang, China).— Wall, 

 Proc. Zool. Soc. London, 1903, p. 98 (part: Shanghai; Yangtse Valley).— 

 Werner, Abh. Bayer. Akad. Wiss. (Muenchcn), II Klasse, XXII, Pt. 2, 

 1904, p. 357 (Ningpo Mts. and Hankow, China).— Nikolski, Zap. Imp. 

 Akad. Nauk, S. Peterburg, (8) XVII, no. 1, 1905, p. 329 (part: Korea). 



1863. Hnlys hlowJioffi. Swinhoe, Ann. Mag. Nat. Hist. (3), XII, 1863, p. 225 

 (Tamsui, Formosa).— Boettger, Offenbach. Ver. Natnrk. 26-28 Ber., 

 1888, p. 153 (part: China). 



Diagnosis. — Similar to AgUstrodon blomhojfii, but number of sub- 

 caudals averages only 35 (known mimimum 29, known maximum 46) ; 

 scale rows 21, rarely (about 10 per cent) 23; supralabials 7, very rarely 

 (about 2i per cent) 8; ventrals 138-151. 



Dimensions of type specimen (adult male). 



mm. 

 595 

 532 



Total length 



Snout to vent 



Vent to tip of tail ^-^ 



r?/pe.—U.S.N.M. No. 17507; Fusan, Korea; 1885; P. L. Jouy, 

 collector. 



Remarhs. — This form is so much like typical Agkistrodon hlomliojfii, 

 from Japan, that no detailed description is deemed necessary. Of the 

 four adult Korean specimens before me, three have uniform black 

 belly. If this series can be trusted the dark postorbital band de- 

 scends slightly farther down on the supralabials than in Japanese 

 specimens. All lack the white spot at the anterior angle of the cres- 

 centic lower postocular. 



Hahitat. — Eastern Cliina, Korea, and Formosa. 



Our knowledge of the distribution of this form is very defective. 

 In China it has thus far been found in the eastern part, although 



a Signifying short-tailed. 



