Ojihiops. 201 



leschenanltii are cliaracters of greater specialization than are shown 

 l)v the Indian Oplnops^ with which Ave are at pi'esent acquainted. As 

 to the typical, Western species of the genus, 0. elegans and 0. occiJen- 

 talis, the smooth upper head-shields also preclude tlieir derivation 

 from the existing species of Cahrifa, whilst the agreemeut in many 

 points with Psammodromus may be a case of convergence from a 

 I common stock sharing characters with Nucras and Lacerta. 



Syno])sis of the Species. 



I. Snout feebly or moderately depressed, as long as postociilar part of head ^ 

 less than 50 scales and plates round middle of body, the lateral scales 

 passing gradually into the ventral plates ; toes feebly compressed. 



A. Upjier head-shields strongly rugose, keeled, or sti-iated ; 26 to H3 



scales and plates round middle of body ; 16 to 20 lamellae under 

 the fourth toe. 

 A single frontonasal, very rarely longitudinally bisected ; prin- 

 cipal si\i)raoculars much broader than posterior part of 

 frontal . . . . . . . . O.Jenlonii, B\yth, i). 201. 



Two or three frontonasals ; principal supraoculars not or but 



slightly broader than posterior part of frontal . 0. heddomii, Jerd.,p. 205. 



B. Upper head-shields smooth or slightly rugose; 20 to 26 lamellae 



under the fourth toe. 

 24 to 30 scales and plates round middle of body ; siiperciliaries 

 in contact with supraoculars, granules between them absent 

 or reduced to a few . . . . .0. occidentalis, Blgr , p. 207. 

 28 to 49 scales and plates roixnd middle of body ; a series of 



granules between supraoculars and supei-ciliaries . 0. elegans, Men., p. 211. 

 II. Snout much depressed, longer than jjostocular part of head ; 

 upper labials projecting, angular ; 56 to 64 scales and plates 

 round middle of body : lateral scales abruptly differentiated 

 from the ventral plates ; toes strongly compressed, with 21 

 to 24 lamelke under the fourth ... 0. microlepis, Blanf., \). 222. 



1. OPHIOPS JERDONII. 



OpMops jerdoni, Blyth, Journ. As. Soc. Beng. xxii, 1853, p. 653; 

 Stoliczka, op. cit. xli, 1872, p. 89, and Proc. As. Soc. Beng. 1872, p. 

 74; Bouleng. Cat. Liz. iii, p. 73 (1887), and Faun. Ind., Eept. p. 174 

 (1890). 



Trojndcsanra jerdoni, Theobald, Cat. Kept. As. Soc. Mus. p. 22 

 (1868). 



Pseudophiops jerdoni, Jerdon, Proc. As. Soc. Beng. 1870, p. 71. 



Pseudopliiops theohcddi, Jerdon, I.e. 



Cabrita leschenauUii (nou M.-Edw^), Murray, Zool. Siud, p. 3i7 

 (1884). 



