PHRYNOCEPHALUS CAUDIVOLVULUS. 161 



single example. The tail is so slender that it cannot have been used as a prehensile organ. 

 Our specimen is 4 inches long, the tail measuring 2^ inches. 



PhEYNOCEPHALUS CAUDIVOLVULUS. 



Lacerta caiidivolvula, Pall. Zoogr. Ross.-As. iii. p. 27. 



Phrynocephalus caudivolviilus, Wagl. Syst. Amph. p. 144. Eichw. Faun. Casp.-Cauc. Rept. p. 85. 



t. 13. f. 6, 7, t. 13. f. 9-14. Bum. ^- Bibr. iv. p. 522. 

 Agama ocellata, Lichtenst. in Eversm. Reis. p. 143. 

 Phrynocephalus tickeliij Giinth. Proc. Zool. Soc. 1860, p. 161 (not Gray), 



Tail depressed in its whole length, stoutish (prehensile "?), without any tubercles. All the 

 scales of the upper parts of equal size, very small. Twenty-six quadrangular upper labials. 

 The hind leg does not quite extend to the eye, if laid forwards. Greyish olive marbled with 

 blackish ; tail with a series of irregular blackish spots on each side ; adult specimens with 

 the middle of the belly and the terminal portion of the tail black. 



The specimens which I formerly referred to Ph. ticJcelii, but which, on a renewed examina- 

 tion, I consider as identical with Ph. caudivolvulus, were obtained by Messrs. von Schlagint- 

 weit, in Tibet, and, according to their statement, at an elevation of more than 15,000 feet 

 above the level of the sea. The species appears to be common in Tartary and other parts of 

 Central Asia. At my request. Professor Peters of Berlin has kindly compared the Tibetan 

 examples vdth the typical specimen, and informs me that they are specifically identical. A 

 full-grown specimen is 4 inches long, the tail measuring 2^ inches. 



AjJjJendix to the Agamidce. 



Mr. Blyth has shortly indicated an Agamoid Lizard which had been sent to him by Mr. Jerdon from 

 Sagur. It is just possible that this animal may be recognized when rediscovered; but from the description 

 alone it is impossible to characterize the new genus Brachysaura, or to fix its position in the family of 

 Agamidae. 



Brachysatjra ornata (Blyth, Journ. As. Soc. Beng. xxv. 1856, p. 448). — A Calotes with enormous 

 head, short and thick body, the tail not exceeding the body in length, and the toes also short and strong ; 

 a slight nuchal crest, and medial dorsal ridge composed of a row of high keeled scales ; two detached tufts 

 of sincipital spines, one contiguous to the tympanum, and each comprising one principal spine. Coloui' 

 olive, with a row of large round dark spots, bordered and set off with white, along the back and anterior 

 half of the tail, continued as simple indistinct dark spots to the end of the tail ; the white broader and 

 forming a kind of pale spot on each side of the neck ; and anterior to this first large spot is a small one 

 upon the crest ; lower parts yellowish white, the throat regularly speckled with pale dusky ; a conspicuous 

 oblique white band passing from beneath the eye to the angle of the mouth. Scales of the body in trans- 

 verse bands, the oblique tendency much less conspicuous than in Calotes. 



