9 6 



PISCES 



developed in at least two cases, i.e. the Holocephali and the 

 Teleostei (p. 437). 



ea. 



ncu. 



nc. 



p 



nik. 



Fu.. 58. 



, 



el's cartilage ; na, nasa capsue ; n.c, nasa carage p, aa-uarae ; pc, prespracuar ; 

 pi, palatine region ; 7, quadrate region ; t, trabecula. A dotted ring indicates the spiraclelin A. 



To grasp the full significance of Huxley's comparisons of these 

 various modes of attachment of the jaws, we must briefly refer 



