1S72.J F. Stoliczka — On Indian Lizards. 103 



Peripia, Gray (I. E., p. 110.) 



Perij>ia might, like Dory lira, be considered as a subgenus of Semidac- 

 tylus. It connects Doryura with Nycteridivm, having the general form and 

 usually flattened pointed tail and small equal granular scales of the former, 

 while the toes are distinctly webbed at the base, and there is also a distinct 

 expansion of the skin at the hinder side of the femora and tibiae. In Nycteri- 

 dium only the lateral expansion of the skin of the body is added to the 

 character of Peripia. If we characterize the later genus from the two Indian 

 species, P. Peronii and Cantoris, we cannot say that the thumb and inner 

 toe are without- an ungual phalanx. I have examined very numerous 

 specimens of the former, and a few of the latter species, and I find that the 

 ungual phalanx on the thumb is veiy nearly, but never entirely obsolete, it, 

 however, always appears to be clawless. On the inner toe the ungual phalanx 

 is extremely small, but in nearly all my fresh specimens I find there is a very 

 minute, thin, transparent, setiform claw present ; only in some old specimens 

 I have not been able to detect it. 



P. Cantoris occurs in Penang, Burma, the Andamans and Nicobars ; 

 from all the localities I have examined specimens. 



P. Peronii is very common on Penang,* and in the Wellesley Province, 

 rarer in Burma and on the Andamans. The type was from Mauritius, and ac- 

 cording to Kelaartf it is also found in Ceylon. Andamanese specimens agree 

 in their very distinct brown tinge with those from the two later islands, while 

 Penang specimens are brown, when young, but when adult usually greenish 

 ashy, rarely with a rosy tinge. Two adult fresh specimens from the Andamans 

 perfectly agree in structure with those from other places ; the general colour 

 above is pale chocolate brown with a rosy tinge, all over speckled with darker 

 brown and with numerous round white spots, about -J m.m. in diameter ; below 

 white, pinkish towards the sides, and all scales minutely punctated. 



Nyctereditim PLATYUKiTS, Schneider. 

 1792. Stellio platyurus, Schneider, Spec. Physiol. Amph., ii, p. 30, and Denk. 

 Acad. Miinchen for 1811, p. 62, pi. i, fig. 3. 



1802. Lacerta Sclmeideriana, Shaw, Zool., Ill, 278. 



1864. Nycteridium% Schneiclerianum, apud Griinther, I. P., p. 111. 



1870. N. Himalayanum, Anderson, J. A. S. B., vol. xl, p. 15. 



I have Asam, as well as Himalayan (from near Darjiling) specimens 

 for comparison, and they certainly belong to the same species. They also do 



* Comp. Jonrn. A. S. B., vol. xxxix, p. 163. 



f Prod. Faun. Zeyl. p. 187. 



% Gray's name Platyurus certainly has the same derivation, as Platurus, and as it 

 has been at an early date replaced by Nycteridium, it seems advisable not to revive the 

 former name, particularly as it would involve a change in the specific denomination, 

 and may besides lead to misunderstanding. 



