2U 



Fisheni JSaord for Scotland. 



Eni'mkration (Jiiai{Acti:ks continiied. 



" The length is the distance from the tip of mandible, when the mouth is closed, to the 



end of the longest ray of the tail fin. 



t Locality unknown. J Iceland fishes. § Probably from Iceland. 



Two kinds of fin-rays, viz.. spine-rays and soft rays, are present in 

 the dorsal, anal, and ventral fins. 



The dorsal fin had from 28 to 32 rays. Of these, 15 were usually 

 spines, the remainder soft rays. The spines occup}^ the larger part of 

 the fin. The spinous portion of the fin is of a different breadth from 

 the soft-rayed portion. The spine-raj" has membrane attached right 

 to the tip on its posterior edge. The bases of the two last soft rays 

 are close together and attached to a single interspinous bone 

 (Fig. 96a). The first two rays (spines) arise from a single interspinous 

 bone also. 



The anal fin had 10 to 13 rays, of which three were spines. The 

 last two soft rays are close together and attached to a single inter- 

 spinous bone (Fig. 96). The first two spines arise from the first 

 interspinous bone. 



