I02 



PISCES 



nsp. /: 



Fig. 0:!. 



Dissected tail of Lepidosteus. (After Kolliker.) <?../>, dorsal f,ulcral scales; h.a, expanded 

 haemal arch ; h.f, hypochordal (in ; n.sp, neural spine ; nt, upturned tip of the notochord ; r, 

 dorsal radial; v.e, vertebral centrum; v.f.s, ventral fulcra! scales. The proximal ends of the 

 dermal rays have been cut off to expose the endoskeleton. 



?isp. pi 



Dissected tail of Scdmo. (After ,K811iker.) c, centrum of caudal vertebra; ef. epichordal 

 derma ray ; h.a, haemal arch ; h.f, hypochordal fln ; hp, expanded haemal arch or hypural ; I, 

 aermal ray i opposite (right) side; n.sp, neural spine; nt, upturned extremity of the 

 notochord ; pi, covering bony plate (modified neural arch?). 



