99 



CORONELLA SAYI.—Schkgel. 



Plate XXII. 



Characters. Head small, oval, rather rounded at the snout; body elongated, 

 robust; above bluish-black, tinged with violet; each plate and scale marked with a 

 milk-white spot. PI. 205. Sc. 53. 



Stnontmes. Coluber Sayi, De Kay, manuscript. 



Coluber Sayi, Schlegel. Plij^s. des Serp., torn. ii. p. 157. 



Description. The head is small, oval, short, with the snout rather rounded. 

 The vertical plate is triangular, with the basis broad and directed forwards, and 

 the apex pointed and turned backwards; the superior orbital are oblong, pen- 

 tagonal, broader behind, of the same length as the vertical, and slightly project 

 over the eyes. The frontal plates are large, pentagonal and broadest internally; 

 the anterior frontal are also large, but smaller than the posterior, quadrilateral, 

 with their posterior and inferior angles prolonged. The rostral plate is hexagonal, 

 rounded above, concave and slightly projecting below; the nasal plates are two 

 on each side, nearly quadrilateral; the anterior hollowed behind and the posterior 

 concave before to complete the nostrils; the loral plate is single and rhomboidal 

 in form. There is a single anterior orbital plate, quadrilateral and elongated, 

 most extensive vertically, and two very small posterior quadrilateral orbital; the 

 occipital plates are large, broad, elongated and pentagonal. The upper jaw is 

 covered with seven large, quadrilateral labial plates on each side, of which the 

 fifth and sixth are largest, and the third and fourth make the inferior wall of the 

 orbit of the eye. 



