HERPETOLOGY OF JAPAN. 



415 



broad as long; one preociilar, pentagonal; two postoculars, the upper 

 largest, followed by two similar, but slightly larger, temporals; three 

 supralabials, only the fii'st and last being of normal size, the second 

 forming a large plate corresponding to at least four ordinary supra- 

 labials, and bordering the eye below^; mental deeply notched in front 

 and divided by a deep median groove, followed behind by a pair of 

 narrow shields which do not reach the commissure; behind these a 

 pair of large chin-shields in contact, followed by another pair sep- 

 arated by an unpaired shield slightly smaller; three lower labials, on 

 right side, four on left, first and thhd (and fourth) quite small, second 

 forming a large j)late corresponding to the second supralabial; dorsal 



335 



Enlarged median dorsals. 



Fias. 334-337.— Emydocephalus ijim^e. nat. size. 334, top or head; 33r), side of head; 336, 



UNDERSIDE OF HEAD; 337, SCUTELLATION AT MIDDLE OF BODY. NO. 1, SCI. COLL. TOKYO. 



scales large, strongly iml^ricate, 15 rows around neck, 17 around 

 middle of body, subequal, except median row which on the posterior 

 four-fifths of the body and tail is greatly enlarged, twice as wide as 

 the others, hexagonal and gastrostege-like ; the scales are smooth, but 

 under the magnifying glass show a few slight tubercle-like elevations; 

 ventrals 140, wide with a rounded median keel in the posterior half; 

 anal large, regular, divided; subcaudals, 23, undivided; basal half 

 of tail with four scale rows on each side between the marginals above 

 and below, the terminal half with three such rows; a large terminal 

 rounded shield, irregularly frayed along the edges. Color (in alcohol) 



