HEEPETOLOGY OF JAPAN, 



13 



other greater than their distance from the eye, but smaller than the 

 interorbital space; upper eyelid small, its width less than one-third 

 the interorbital space; top of head surrounded on the sides and ante- 

 riorly by a rather rough, bon}^ crest which covers the tip of the snout, 

 canthus rostralis, supraorbital edge, and fronto-squamosal arch; 

 parotoid gland scarcely as long as the width of the interorbital space, 

 narrow, rather prominent; distance from tip of snout to gular fold 

 contained less than three times in distance from gular fold to vent; 

 fingers and toes interdigitating when legs are pressed against the 

 sides of the body; a rough, bony ridge, similar to the one on the head, 

 along the middle of the back, from occiput to the tail and continuous 

 with the upper ridge of the latter: from the shoulder to the side of 



Figs. 1-6.— Tylototriton andersoni. IJ v n.\t. size. 1, top of he.^d; 2, side of head; 3, open 

 mouth; 4, section of tail at end of basal third; .5, hand; 6, foot. No. 67, Sci. Coll., Tokyo. 



the tail a dorso-lateral series of knob-like glands on the body termi- 

 nating the pointed end of the ribs, which protrude as hard spines, 

 though not perforating the skin; this series continues some distance on 

 the side of the tail, on which it gradually disappears ; between this series 

 and the median dorsal ridge another series of prominent, conical, 

 bony knobs, about eight on each side, each one located over a rib and 

 connected along the latter with the terminal rib knob by a series of 

 smaller, less conspicuous, tubercles; fingers and toes rather short, 

 depressed, with indication of a slight web at the base; fifth toe very 

 short, rudimentary on the right foot, entirely missing on the left: no 

 metacarpal or metatarsal tubercles; tail compressed, tapermg from 



