REPTILES. '-29 



Found at Bahia Blanca by Mr. Darwin. The specimens are probably all of 

 them very young ; hence the longitudinal lines can scarcely be considered as per- 

 manent, as most species of the genus are beautifully lineated in the young state. 

 The length of the tail, with its carinated scales, the general elegance of the form, 

 the gracile form of the head, and the neat and distinct arrangement of the colours, 

 render this one of the most beautiful species of this elegant genus. 



The description of the colours given above, being from specimens which have 

 been long in spirits, it is necessary to state that Mr. Darwin has the following 

 notice respecting one of them — " On the sides two dark red streaks ; tail red." 



Familia— ZONURIDJ1 

 Genus — Gerrhosaueus. Weigmann. 



Gerrhosaurus sepiformis. Bibr. 



Plate XV.— Fig. 2. 



Scincus sepiformis, Schneid. Hist. Ampb. II. p. 191. Men. Syst. Amph. p. 70. n. 1. 

 Gerrhosaurus sepiformis, Bibr. Hist, des Rept. V. p. 384. 



Corpore cum caudd longo, serpentiformi ; pedibus parvis; squamarum submaxillarum 

 pari secundo contiguis ; squamis dorsalibus magnis, subreciangularibus, striatis, in 

 seriebus tredecem, et ventralibus in seriebus octo dispositis. 



Habitat, Cape of Good Hope. 



After a careful examination of the data from which the different synonyms of 

 this species, and of Gerrhosaurus Jlavigularis, Bibr., have been derived, I am in- 

 clined to agree with this author, that the present is the true Scincus sepiformis of 

 Schneider, and of Merrem, and not Scincus Jlavigularis as supposed by Wagler, 

 Weigmann, and Gray. It is very fully described by Bibron in the " Histoire 

 Naturelle des Reptiles," but it has not hitherto been figured. There is no notice 

 of it in Mr. Darwin's notes, further than its having been obtained at the Cape of 

 Good Hope. 



