128 Stoliczka — On netv Be^tilia, etc. [July, 



13. Stellio Agroeensis, n. sp. 



General form of the body as in St. tubereulatus, but more depressed. 



All the head shields, above, are sharply keeled ; the nasal is usually 

 anteriorly prolonged and in contact with the rostral ; a row of enlarged 

 sharply keeled scales extends from below the eye to above the tympanum ; 

 several rows of moderately elongate scales along the upper and lower labials, 

 of each of which there are about ten on either side. Several groups of en- 

 larged spines on the sides of the neck, two or three spines on the upper, 

 and the same number on the front edge of the tympanum, A distinct fold 

 across the throat, with a naked pit in front of each shoulder. Eight or ten 

 rows of moderately enlarged scales along the middle of the back, very much 

 decreasing in size already between the shoulders, but particularly on the 

 neck, where they are almost finely spinulose, divided in the middle by a low 

 crest of distinctly enlarged scales. Scales at the sides of the body very much 

 smaller than on the middle of the back, and arranged in tolerably regular 

 transverse rows ; there are no single scales perceptibly enlarged between 

 them, but those on the sides of the middle part of the belly are all enlarged, 

 and the lowest of them exceed in size those of the back. Through this 

 character alone the species is readily distinguished from both, St. tubereula- 

 tus and Dayanus. Scales on the lower side smooth, rather small, generally 

 with a double longitudinal row of enlarged ones along the middle of the 

 belly, and three to five transverse rows on the pre-anal region, where they 

 are spongy or porose in the centre. The scales on the upper side of the fore 

 limb are almost equal among themselves and enlarged, on the hind limb some 

 are, however, considerably larger than others ; on the tail they are regularly 

 verticillate. 



In specimens which appear to be hardly full grown, I count from one 

 hundred and thirty to one hundred and sixty-four longitudinal series of scales 

 round the middle of the body, and of these there are fifty to fifty-six rows along 

 the belly, the scales being on it conspicuously smaller than in equally large 

 specimens of tubereulatus and Dayanus. When compared with the former 

 of these two species, the hind limbs of St. Agrorensis are decidedly longer. 

 The fore limb when laid backward just or barely reaches the groin, but the 

 hind limb when laid forward fully extends to the eye, or even to its 

 anterior edge. In a perfect specimen of medium size, the tail is double the 

 length of the head and body together. 



The general coloration, above, is olive or blackish brown. The head in 

 the very young is marked with more or less confluent yellow spots ; the 

 neck and back with three sulphm- yellow longitudinal bands, the middle of 

 which continues on the tail ; a yellow band commences on the rostral, 

 extends on either side along the upper labials, passes through the lower 

 portion of the tympanum, then across the shoulder and along the sides of the 



