1881.] LIZARDS OF SOCOTRA. 465 



of broad subcautlal shields begins some .distance behind the anus, 

 and is continued nearly to the tip of the tail. 



Fig. 1. 



Foot of Hemidaefylus homoiolepis. 



Colour above grey, rather irregularly spotted with black. Tail 

 with about 7 transverse black bands, the last five extending all round 

 and forming rings. Lower parts of head and body without dark marks. 



Total length of the only perfect specimen 2*5 inches, from nose 

 to anus 1-2. A larger specimen, apparently an adult male, measures 

 1*5 inch from nose to anus. 



Two specimens only were obtained, one of which has a perfect 

 tail. The nearest described form is probably Liurus ornatus ' from 

 Western Africa ; but that is much larger, and has both enlarged 

 tubercles on the back and femoral pores. Hemidactylus honKxolepis 

 must be placed in the genus Liurus, if the latter be considered distinct. 



Pristurus rupestris. 



Pristurus rupestris, W. Blanf., Eastern Persia, ii. p. 350, pi. xxiii. 

 fig. 1. 



Several specimens. All agree with those from Muscat and the 

 Persian Gulf, and differ from P. Jiavipunctatus, Riipp., in wanting 

 a rudimentary crest on the hinder part of the back, the row of en- 

 larged and more or less spinose scales commencing on the upper 

 surface of the tail just above the anus in P. rupestris, whereas it 

 begins near the middle of the back in inales, or a little farther back, 

 above the pelvis, in females, as stated in Itlippeli's original de- 

 scription -. The limbs and the toes too are considerably longer in 

 P. rupestris, though still far inferior to those of P. longipes^. The 

 latter species is found at Aden and Massowa, whilst P. rupestris 

 occurs in Socotra, at Muscat in Arabia, and on the island of Kharg 

 (Karrack) in the Persian Gulf, near Bushire. P. Jiavipunctatus 

 was originally obtained from Massowa ; and there are also specimens 

 in the British Museum said to be from Syria. 



In P. longipes, according to Peters, the length of the hind foot, 

 including the longest toe, considerably exceeds that of the head, 

 whilst in P. Jiavipunctatus the length of the hind foot equals the 

 distance from the end of the snout to the ear-opening. There are 

 typical specimens oi P. Jiavipunctatus in the British Museum, received 

 from Dr. Riippell himself; and in these the length of the hind foot 



1 Gray, Cat. Lizards B. M. p. 157. 



^ Neue Wirbelthiere, Amphibien, p. 17. 



^ Peters, Mouatsber. Akad. Wiss. Berlin, 1871, p. 566. 



