FOKMOSAX BATEACHIANS AND KEPTILES. 219 



between the supralabials and the eye. The scales occupying 

 this space in the present species are smaller, more irregular and 

 not developed into a well-defined regular series. A similar 

 difference exist in the enlargement of the scales which in J. 

 swinhonis cover the lower edge of the mandible, these scales 

 being scarcely differentiated from those above or below, except 

 one or two anteriorly joining the symphyseal. The dorsal 

 lepidosis in the new species is less regular than in the other two 

 species mentioned. In these there is a fairly well indicated, 

 though not continuous series of enlarged keeled scales on the 

 sides of the back parallel to the median dorsal series. In J. 

 mitsukurii these lateral series are very obscure and on the an- 

 terior part of the back the scales so far from being parallel to 

 the crest point obliquely towards it. The hind limbs are de- 

 cidedly longer, the tip of the longest toe reaching forwards to the 

 rostral in the male and to the anterior angle of the eye in the 

 female. The tail is also longer, being twice and a half to nearly 

 three times the length of head and body. The nuchal crest is 

 highly developed in both sexes; in the males the anterior spines 

 of the dorsal crest are nearly as large as those of the nuchal 

 crest, and the dorsal crest extends distinctly some distance down 

 the tail ; in the female it is a distinctly spinous ridge though 

 less developed than in the male, while the nuchal crest consists 

 of spines higher than long. 



The color is apparently a bluish drab with blackish ver- 

 miculations on the head and dark brownish cross-blotches on 

 the back ; these are better defined in the females, which lack 

 the well-defined light-colored dorso-lateral band which in the 

 niales extends from the neck to halfway between the axilla and 

 the groin ; the back of some of the males is more or less ting'ed 



