Nove] | BARBOUR — ASIATIC AMPHIBIA AND REPTILIA 73 
‘white-rimmed spectacles’ lying in a broad band of black, while 
the general ground color is olive green. 
Agkistrodon blomhoffii (Boie). 
Boie, Isis, 1826, p. 214. 
Stejneger, Herp. of Japan, 1907, pp. 457-460. 
Three specimens, one adult and two young, of the typical form 
of this species from Yokohama. For a full discussion of this form 
and its related subspecies, see Stejneger, loc. cit. 
Type locality: Japan. 
This snake has been divided into races by Stejneger. A. blom- 
hoffit is confined to Japan proper. Subspecies affinis (Gray), 
brevicaudus Stej., and intermedius (Strauch), occur, respectively, 
in the southern Riu Kius, in eastern China, and in Korea and 
Formosa, the last-named ranging widely in southern Siberia, 
Tartary, Mongolia, and eastern Turkestan. 
In the young specimens the characteristic yellow tip to the tail is 
conspicuous. 
Agkistrodon blomhoffii intermedius (Strauch). 
Strauch, Trudi Perv. Siezda Russkikh Yestestv., Zool. (p. 294); Mém. 
Acad. Sci. St. Pét., (7), XXI1, 4, 1873, pp. 245, 282. 
Stejneger, Herp. of Japan, 1907, pp. 464-465. 
Two specimens which seem referable to this race have come from 
the vicinity of Mt. Taipaishiang, northern China. ‘The fact that 
in both there are seven supralabials on each side, shows that in these 
specimens, as we might expect from the locality, there is a tendency 
toward the condition in A. b. brevicaudus Stej. The number of 
ventral scales is rather low for this form, viz. 157 and 161, while the 
single example which has a complete tail has 47 pairs of subcaudals, 
which is quite normal. ‘There are 21 rows of scales on each, the 
most usual number being 23, though Stejneger knew of one speci- 
