HERPETOLOGY OF JAPAN. 



491 



anteriorly narrowly edged with bright yellow; underside of shell ocher 

 yellow, each shield with a large reddish brown blotch at the outer 

 posterior corner, each marginal and each shield on bridge with a 

 narrow circle of dark brown, the reddish brown blotches being placed 



Figs. 379-381.— Ocadia sinensis. IJ X ^at. size. 3(9, top of head; 380, side of head; 381, head 



FROM FRONT. NO. 29, Scl. COLL. TOKYO. 



excentrically to this ring; crown uniform olive-brown, the rest of head 

 and neck olive, with narrow longitudinal black-edged, pale yellow 

 stripes between pale olive stripes of nearly the same width; legs, 

 feet, and tail similarly striped. 



Dimendons. 



mm. 



Greatest length of carapace 73 . 



Greatest width of carapace 58 



Greatest length of plastron 66 



Length of hind lobe of plastron 24 



Width of hind lobe of plastron 32 



Width of opening of shell posteriorly 38 



Width of bridge 24 



Depth of shell 31 



Width of head 12 



Ivcngth of tail from vent 38 



The adults are said to have shorter tails, the females shorter than 

 the males. In very, young specimens the tail is said to be about 

 two-thirds the length of the shell. The lateral keels usually disap- 

 pear in the adults, according to Boulenger, who records an adult 

 specimen with a length of shell of 230 mm. 



Variation. — The edges of both jaws are described by Boulenger as 

 finely denticulated, and the pectoral seam as equaling or exceeding 

 the gular and humeral seams together; nuchal may be longer than 

 broad, and second and third vertebrals may be as long as broad. 



Habitat. — The present species seems to be restricted to southern 

 China and the island of Formosa. On the latter it has been recorded 

 both from the northern and from the southern part. Swinhoe had it 

 from Taiwan fu and the Senckenberg Museum has it from Takao, 

 while I have examined a specimen from Taipa, and Mr. Tada notes 

 it as common in the Tamsui River, though he may possibly have 

 confounded it with Cyclemys flavomarginata. 



