496 PROFBSSOE OWEN ON THE GENUS DINORNIS. 



circular arrangement about a smoother space, which seems to have received the chief 

 pressure of the inner trochlea. On the inner or tibial side of the pad (d) the papillae 

 increase in breadth and number, and are aggregated in the form of penta- or hexagonal 

 oblongish scales, about 2^ lines in long diameter, diminishing in size (and chiefly in 

 breadth) at the inner margin of the pad. 



The skin becomes thinner and smooth at the part yielding to the bend of the toe 

 upon the metatarse (ib. fig. 1, h), and that to an extent and with a degree of infolding 

 in the dry integument which indicate great flexibility of the toe. 



In advance of this, beneath the expanded ends of the first and second phalanges, the 

 skin thickens and spreads into a second broad flat pad (i) beset with coarse scattered 

 papillee. 



A short smooth tract (^) below the middle of the second phalanx intervenes between 

 the second (i) and the third (I) papillose pad, which latter is beneath the joint between 

 the second and thii'd phalanges ; the papillae are here longer and more close-set, the 

 transverse extent prevailing in most. 



All the papillae are formed, or covered, by thick epidermal matter as hard as horn. 

 It is, however, together with the more gelatinous matter of the tendons and ten- 

 dinous sheaths, soluble ; and, unless the remains of the bird had been buried in very 

 dry sand, it can hardly be supposed that it would have resisted for many years the 

 action of moisture. 



DESCRIPTION OF THE PLATE. 



PLATE LXXXVIII. 



Fig. 1. Inner-side view of the inner toe (ii) of the right foot, JJinornis rofmstus, Ow. 

 Fig. 2. Under view of the same toe. 



Fig. 3. Proximal end of first phalanx of the same toe, with appended integument, 

 tendons, &c. Natural si/e. 



