6. PSAMMODROMUS. 47 
Algira, part., Gray, 1. ¢.; Lataste, l. c. 
Seiad Lataste, Le Naturaliste, 1880, p. 299; Bedriaga, 1. ¢. 
p. 411. 
Head-shields normal. Nostril pierced between two nasals, in 
contact with the first labial or separated only by a narrow rim. 
Lower eyelid scaly. Collar absent or very feebly marked ; a short 
fold in front of thearm. Back covered with large, rhombic, strongly 
keeled and imbricate scales ; ventralshields smooth. Digits slightly 
compressed, with tubercular or keeled lamelle inferiorly. Femoral 
ores, Tail cylindrical. 
South-western Europe and opposite coast of Africa. 
The four species which are referred to this genus are closely allied, 
and the following characters apply to all of them :—Snout moderately 
long, obtuse; supraoculars three, first largest, third smallest; a 
small additional shield is usually present, separating the first supra- 
ocular from the loreal; supraciliaries in contact with the supra- 
oculars ; occipital usually smaller than interparietal ; temporal scales 
irregular, smooth or obtusely keeled; an enlarged tympanic plate ; 
no auricular denticulation ; one or two loreals; subocular reaching 
the lip (except in some specimens of P. hispanicus), between the 
fourth and fifth labials. Gular scales strongly imbricate, gradually 
increasing in size towards the pectoral plates; the three anterior 
pairs of chin-shields in contact. Lateral scales passing gradually 
into the ventrals, which are in six straight longitudinal series. A 
large preanal plate, bordered by one or two series of smaller ones. 
Synopsis of the Species. 
I. Collar distinguishable. 
Digits sharply keeled inferiorly ...... 1. hispanicus, p. 47. 
Digits tubercularly keeled inferiorly.... 2. blanci, p. 48. 
Il. No trace of a collar. 
Ventral plates of the median and outer 
series narrower than the others .... 3. microdactylus, p. 49. 
Ventral plates subequal.............. 4. algirus, p. 50. 
1. Psammodromus hispanicus. 
Psammodromus hispanicus, Gray, Cat. p. 38. 
Psammodromus hispanicus, Fitzing. N. Class. Rept. p. 52; Schreib. 
Herp. Eur. p. 897 ; Camer. Mon. Saur. Ital. p. 90. ; 
Lacerta edwardsiana, Dugés, Ann. Sc. Nat. xvi. 1829, p. 386, pl. xiv. 
Aspistis edwardsiana, Wagl. Syst. Amph. p. 156. 
Notopholis edwardsiana, Wiegm. Herp. Mec. p. 10. 
? Algira punctata, Gray, Ann. N. H. i. 1838, p. 283. 
Psammodromus edwardsii, Dum. § Bibr. v. p. 253. 
edwardsianus, Bonap. Ann. Sc. Nat, (2) xii. 1889, p. 62, 
pl. iv. a. fig. 2, and Faun. Ital. 
The suture between the rostral and the first labial falls below the 
anterior border of the nostril; subocular frequently not reaching 
