GERRHOSAURUS TYPICUS. 



Reptilia.— Plate XXXVIII. Fig. 2. 



G. supcrne aurantio-brunneus, infeme griseo-albu*, linea flava pone oculos incipiente et linea nigro in 

 utroque latere marginata, ilia versus apicem, his pone basin caudse desinentibus ; corporis lateribus 

 nigro brunneo-umbratis et labeculis triangularibus variegatis, scuto occipitale quinquelaterale. 



Longitudo h naso ad basin caudse -i unc. 6 lin. ; caudee 6 unc. 6 lin. 



Pleurotuchus typicus, Smith, Mag. Zool. and Botany, vol. i. p. 143. 

 Gerrhosaurus typicus, Dum. et Bib. Erpet. General, torn. v. p. 383. 



Colour. — The upper and lateral parts of the head, the back, and the upper 

 and lateral parts of the tail deep orange-coloured brown, the two latter with 

 two contiguous longitudinal stripes on each side, the external stripe the 

 narrowest and pale cream-yellow, the internal deep liver-brown, fading at its 

 inner edge into the tint of the centre of the back ; the light stripe commences 

 immediately over and above the eye, and terminates near the point of the 

 tail, though on the latter it is not so defined as on the former ; the dark one 

 commences at the hind head, and is lost about the middle of the tail. The 

 sides are variegated with several series of irregular light yellow spots, which 

 are most distinctly defined between the fore and hinder legs, and in addition 

 to these spots there are also others of a liver-coloured brown. The variegations 

 on the sides of the tail are confusedly disposed, and in many places run 

 into each other. The under parts and the inner surface of the extremities 

 dull cream-yellow, inclined to greyish yellow. Eyes orange coloured brown. 



Form, &c. — Figure fusiform, the tail very long and slender towards the 

 point. Head small, short, and tapered towards the nose, which is obtusely 

 pointed. Body quadrangular, the angles rounded, and the back and sides 

 but more especially the latter convex. Tail quadrangular towards its base, 

 cylindrical towards the point. The naso-rostral plates sub-hemispherical, 

 and the nostrils towards their centre ; superciliary plates four in number, 

 the two central ones the largest, and externally all are edged with a row of 

 narrow, oblong plates, which form the upper edge of the orbit; fronto-parietal 

 plates subcordate, the apical portion directed outwards; parietal plates four- 

 sided, the inner side of each much shorter than the outer, and is as well as the 

 hinder angle of the fronto-parietal separated from its fellow of the opposite side 

 by the intervention of a small five-sided occipital plate ; internasal plate 

 large and diamond-shaped. Temporal plates seven or eight, each many- 

 sided, and of various sizes, the smallest ones towards the centre. Scales of 

 upper lip six in number, the fourth, from rostral plate ; the longest, those of 



