— 113 — 



the crown of the tooth. Some, like Zonorus, Gerrhosaunis, 

 and Cz/clodus, approach the Mauritian form in size. In 

 members of both these families there is a similar dispro- 

 portion of thickness betAveen humerus and femur, as in 

 our Lizard. Thus it seems very probable that it will 

 ultimately prove to belong to one of these families ; but 

 so much appears to be certain, from a comparison of its 

 mandible with those of the other principal generic types, 

 that it is sufilciently distinct to deserve being placed in a 

 separate genus, for which I propose the name Didosaurus 

 mauritianiis. 



II. — Mr Slater collected in Eodriguez, with remains 

 of the Solitaire and Tortoise, several bones which he 

 recognized as the remains of a Lizard, possibly belonging 

 to the family of Skinks. In my opinion it is a Greckoid 

 Lizard, which, as far as the evidence before us goes, 

 cannot be separated from the genus Gecko , but the spe- 

 cies from Rodriguez appears to have attained a much 

 larger sixe than GecIiO venis (to which it is very similar), 

 or than any other Greckoid known. Referring, then, this 

 Lizara to the genus mentioned, I concur in Mr. Slater's 

 proposal of naming it after Mr. E. Newton, — Gecico 

 ■iieuioiiii. 



The bones collected consist of two parietals, pos- 

 terior half of right ramus of lower jaw, right hu- 

 merus, right half of pelvis, five left and two right femurs, 

 and therefore must have belonged to at least five indivi- 

 duals, of Avhich the one indicated by the pelvis was the 

 largest, In the following description these bones have 

 been compared with the skeleton of a Gecko rerus, the 

 vertebral column of which is 100 millims. long (exclusive 

 of the caudal vertebrae), and the skull 45 millims. 



Ths ]X(i'iefal agrees in size and shape entirely with 

 that of G. verus, in which the two long processes into 



