88 



aECKONIBJE. 



as high, without cleft above ; the nostril is pierced just above 

 the suture of the rostral and first labial, between the former and 

 three small nasals, the rostral entering considerably and the first 

 labial being separated by the narrow infraposterior nasal ; eight or 

 nine upper and as many lower labials ; mental trapezoid or penta- 

 gonal, not larger than the adjacent labials ; no regular chin-shields, 

 but small polygonal scales, passing gradually into the minute gra- 

 nules of the gular region. Abdominal scales moderate, smooth, 

 subhexagonal, slightly imbricate. Tail long, cylindrical, tapering 

 in its posterior half, covered with uniform small smooth scales, 

 rather larger inferiorly, arranged in rings. Greyish or reddish 

 brown above, variegated with dark brown ; whitish inferiorly. 



Total length 97 mOlim. 



Head 12 



Width of head 9 



Body 35 



Fore limb 15 



Hind limb 18 



Tail 50 



Dr. Jones [P.]. 

 Prof. Busk [P.]. 

 Voy. of the ' Herald.' 

 Rev. C. Searle [P.]. 



Rev.G.H. R.Fisk[P.]. 



15. Phyllodactylus marmoratns. (Plate VII. fig. 6.*) 



Diplodactylus marmoratus, Gray, Cat. p. 149. 

 Diplodactylus marmoratus, Gray, Zool. Erebus 8f Terror, pi. xv. 



fig. 6. 

 PhyUodactylus porphyreus, part., Dum. ^ Bibr. iii. p. 393, 

 peronii, Fiiz. Syst. Rept, p. 95. 



The rostral is pentagonal or hexagonal, the posterior angle being 

 truncate, the latero-superior angles touching the nostril ; the latter 

 is pierced posteriorly to the suture of the rostral and first labial, 

 and between the latter and three nasals. This is the only constant 

 difference I can detect between this form and the preceding ; but it 

 appears to me of sufficient importance to separate specifically the 

 Australian from the African form. I might add that the scales are 

 generally rather smaller and the mental broader in S. marmoratus 

 than in S. porphyrem, but these dififerences are not absolutely 

 constant. 



* End of snout, x 4. 



