DISCODACTYLUS. 299 



unequal ; the inner ones smallest, truncated upon their extremity, 

 where a slender and curved nail may be seen, situated in a small 

 groove. All along the middle of their inferior surface are distributed 

 small, transversely elongated, or subcircular plates, two of which, 

 rather thick and convex, occupying symmetrically the extremity, one 

 on each side of the nail. These subdigital plates are more or less 

 regularly arranged, with intervening minute granules. 



The tail is subcylindrical, fusiform, tapering into a point, and 

 covered with small, angular, polygonal scales, disposed upon circular 

 series, subequal and similar above and below. 



The color is brown above, with a dorsal pale or yellowish band or 

 streak, subbifurcated upon the occiput, where broadest, and extending 

 to the base of the tail. A stripe of rather dark brown, extends from 

 the sides of the head along the margin of the dorsal streak. The rest 

 of the sides of the body and upper surface of the limbs is dotted with 

 yellow. The upper surface of the tail exhibits a double series of pale 

 spots surrounded with black dots. Beneath, the color is of a uniform 

 dull white, or light olive. 



Log. — Southeastern Australia. 



Plate XXIV, fig. 9, represents Diplodactylus vittatus, si^e of life. 

 Fig. 10, is an upper view of the head ; 

 Fig. 11, its profile ; and, 

 Fig. 12, an under view of the same region. 

 Fig. 13, is the left hand, from above ; 

 Fig. 14, the same hand, from below. 

 Fig. 15, a group of dorsal granules ; 

 ' Fig. 16, a group of abdominal scales. 

 Figs. 10-16, are somewhat magnified. 



Genus DISCODACTYLUS, Fitz. 



Gen. Char. — Fingers and toes five, free, subcylindrical, clawed, with 

 one series of small plates beneath, and dilated at the apex into a 

 double disk, separated beneath by a groove, in which the claw is 

 situated. Palms and soles granular. Body moderately elongated ; 

 limbs well developed. Neither femoral nor preanal pores. Tail 



