. Bulletin - United States National Museum. Science. HERPETOLOGY OF JAPAN. 317 In the young (No. 21193) (fig. 272) the markings are darker and more distinct; the pattern on the head shows a fleiir-de-hs figure on the interparietal suture; the hiteral dark spots on the underside are l:)lacker, broader, with a convex anterior outline; there are three pale dorsal Hues, the median one not well defined and interrupted by the dark crossbars, the lateral ones on the fifth, sixth, and seventh scale rows continuous and cutting ofi^ a series of blackish lateral spots from the dorsal dark crossbars. This
. Bulletin - United States National Museum. Science. HERPETOLOGY OF JAPAN. 317 In the young (No. 21193) (fig. 272) the markings are darker and more distinct; the pattern on the head shows a fleiir-de-hs figure on the interparietal suture; the hiteral dark spots on the underside are l:)lacker, broader, with a convex anterior outline; there are three pale dorsal Hues, the median one not well defined and interrupted by the dark crossbars, the lateral ones on the fifth, sixth, and seventh scale rows continuous and cutting ofi^ a series of blackish lateral spots from the dorsal dark crossbars. This pattern is often retained in tolerably large specimens. Variation.—The variation in our Korean material is quite insig- nificant; thus all possess a subpreocular, but, as might be expected in a species of so wide distribution, many anomalies are found when a large series is studied. Strauch examined 84 specimens from nearly the entire range, and has enu- merated the deviations he found. Thus five specimens lacked the subpreocular on both sides and five on one side; thirteen had three postoculars on both sides and six had three on one side; four specimens had nine supralabials on both sides and two specimens only seven on both sides, wdiile eleven had nine or seven on one side only. The number of scale rows varies in about even proportions between 23 and 25 in 43 speci- ; As to the subcaudals, Strauch mentions as a curious anomaly only found in some east Siberian and west Chinese specimens that some of the subcaudals are entire. The number of ventrals varies betw^een 172 and 214. In this a slight tendency to geographical variation can be traced. Thus in 42 specimens from Siberia the ventrals vary between 180 and 214 in those west of the Yenisei River, but between 172 and 195 in those from east of that river. In 17 Chinese specimens they vary again between 180 and 213 ventrals, while in five Korean specimens the number is 203-207. One of our specimens (No. 21190) sho
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