HERPETOLOGY OF JAPAN. 499 



est; plastron very slightly concave, angularly notched behind, trun- 

 cate in front, bridge angle rounded, shields nearh^ smooth; posterior 

 lobe slightly longer than bridge, nearly as wide as opening of the shell; 

 abdominal seam longest, but only slightly longer than femoral, less 

 than humeral and gular together; femoral longer than pectoral; 

 gular seam longer than anal, humeral shortest; inguinal shield 

 larger than axillary; toes webbed to the tips; tail tapering, somewhat 

 compressed at tip. Color (m alcohol): Carapace chestnut brown, the 

 median keel blackish' brown; a small darker brown pentagonal spot 

 on the areola of each costal above the lateral keel; vertebrals and 

 transverse edges of costals narrowly outlined with yellow; shields of 

 underside blackish brown with all seains and outer edge of hmd lobe 

 of plastron edged with buff, the median seams broadly so; head, 

 neck, and limbs tawny olive; a number of yellow, black-edged stripes 

 and vermiculations on side of head, the principal being supratemporal 

 line ; a medio-temporal line ; a preauricular line ; a line posteriori}^ on 

 both lips and surrounding the angle of mouth; a small spot in front 

 of eye; several irregular lines and spots on lower jaw^; neck with 

 numerous longitudinal lines of ocellated, dull buff spots; limbs and 

 tail without distinct markings, though on underside of thigh there are 

 indications of lines of spots similar to those on neck. 



Dimensions. 



mm. 



Greatest length of carapac'e 122 



Greatest width of carapace 87 



Greatest length of plastron - 119 



Length of hind lobe of plastron 44 



Width of hind lobe of plastron 53 



Width of bridge. -• 42 



Depth of shell 53 



Width of head 21 



Length of tail from vent 37 



Variation.- — The specimens examined by me offer but very insig- 

 nificant variations in structure as well as in coloration. The latter, 

 however, is not constant, and specimens, more or less imiform black, 

 occur both in China, where they have given rise to ''JJamonia uni- 

 color," and in Japan. The specimens from the latter country, which 

 Schlegel described as Eniys vulgaris picta seem to belong to this color 

 variety-, but the yellowish marks on side of head and neck were very 

 conspicuous. That perfectly uniform black ones occur in Japan also 

 seems certain from Hilgendorf's notes on a specimen of " Clemys nni- 

 color," which he purchased alive in Tokyo, and whicli had "neck and 

 head . . . plain dusky without any kind of markings." 



Hahitat. — Eastern and southern China, Korea, and southern Japan. 



In China it is known from Tientsin to Canton and in the interior 

 at least as far as Hankow. It is also reported from Cochin Cliina. 



