LTZAHDS FROM THE MIASOA.BEIS'E ISLAM' »5. 



325 



Fig. 3. 



other Greckoid known. Referinug, then, this Lizard to the genus 

 mentioned, I concur in Mr. Slater's proposal of naming it after 

 Mr. E. Newton, — Gecko newtonii. 



The bones collected consist of two parietals, posterior half of 

 right ramus of lower jaw, right humerus, right half of pelvis, five 

 left and two right femurs, and therefore must have belonged to 

 at least five individuals, of which the one indicated bj the pelvis 

 was the largest. In the following description these bones have 

 been compared with the skeleton of a GecJco verus, the vertebral 

 column of which is 100 millims. long (exclusive of tlie caudal ver- 

 tebr?e), and the skull 45 millims. 



The parietal agrees in size and shape entirely 

 with that of G. verus, in which the two long pro- 

 cesses into which this bone bifurcates behind are 

 separated by a large vacuity from the paroeci- 

 pital. In Phelsuma (which genus is so well repre- 

 sented in these islands and on the coasts of this 

 geographical region, and which might have been 

 expected to occur in Eodriguez) the parietal has 

 quite a difi'erent shape (P. seychellense), oxi^it^ pos- 

 terior processes are adpressed to the paroccipital. 



The articulary piece of the mandible difters nowise from that of 

 G. verus ; like the latter it is produced behind the condyle into a 

 hamate grooved process, which, however, is much more concave on 

 its upper surface in the Eodriguez species than in G. verus. 



Fig. 4. 



Parietal bone of 

 Gecko newtonii. 

 Upper aspect, 

 and of natural 



size. 



Humerus of Gecko newtonii, nat. size. A, anterior, B, posterior, 0, ulnar, 

 and D, radial aspects of bone. 



The humerus ofiers a more striking difierence fro-m G. verus than 

 the preceding bones; it is much stronger, and especially its ex- 

 tremities are comparatively much more dilated. Its head is 

 transversely elongated, passing into a curved and projecting pro- 

 minence, which answers to the ulnar tuberosity. The radial 



LIXX. JOTJBN. ZOOLOGY, VOL. XIII. 27 



