REPTILIA. 11 



Tliis species of Phrynocephahis is very closely allied to the Persian P. maculatus, 1 and 

 probably to the true P. caudivolvulus, Pallas nee Giinther. It appears to be a much, larger 

 form than the latter. Erom the former it is distinguished by its limbs, when adult, being 

 shorter, the fore limb, as a rule, not reaching the thigh, whereas it always reaches or even 

 exceeds it in P. maculatus. The fifth toe of the hind foot in P. maculatus is longer; the 

 fringe on the outer edge of the fourth toe less developed, and there is scarcely any fringe on 

 the inside of the toe. But the most important distinctions are in colouration. P. maculatus, 

 of which I have collected many living examples, never has a red spot behind the shoulder, 

 and it always has a black tip to the tail, below at all events. The colouration of the tail in 

 Phrynooephali is, as a rule, very constant. 



P. axillaris is said by Dr. Stoliczka to be very active, to run at a great pace, and to 

 have the habit of coiling its tail upwards at the end. It, doubtless, inhabits open plains, like 

 its Persian ally. 



From the above, it would almost appear as if I had proposed a new species on characters 

 of no more importance than those which I have just before shown to be insufficient in the 

 case of P. forsytlit. But in the present case the characters appear constant, probably 

 because the two forms P. axillaris and P. maculatus inhabit distant and isolated areas, 

 whilst in the case of P. forsythi and P. theobaldi there is great variation, and no constant 

 distinction can be detected even in colouration ; moreover, so far as my experience of the 

 genus goes, I should say that the red patch behind the axil in P. axillaris and the black 

 tail tip in P. maculatus are more important than the back markings which distinguish 

 P. forsythi. When P. maculatus exhibits bright colours, as it very often does, they are 

 confined to the lower surface of the tail and hinder parts of the thighs. 



Family GECKOTIDjE. 

 7. TERATOSCINCUS KEYSEEXINGI. 



Strauch : Bull. Acad. Sci. St. Pet., 1863, vi, p. 480; Mel. Biol., vi, p. 554 ; Zool. Record, 1864, 

 p. 111. 



Kuli-yailang, Yarkandi (Scully). 



1, YangiMssar, Eastern Turkestan. 



This is a new locality for this very remarkable gecko. Teratoscincus keyserlingi was 

 originally discovered by Count Keyserling in the Persian province of Khorassan, at a spot 

 called Sar-i-chah, and it has since apparently been found in Western Turkestan, as it is 

 included by Severtzoff in his list of the Reptiles 2 found in that province. It thus appears 

 to have a considerable distribution in Central Asia. The original description was copied in 

 the " Zoological Record." 



The single specimen obtained by Dr. Stoliczka is not in a very good state of preservation, 

 but still the characters are easily distinguishable. The following is a description : 



1 Anderson: Proc. Zool. Soc., 1872, p. 389; Eastern Persia, ii, p. 331. 

 3 Turk. Jev., p. 71. 



