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Part III. — Twenty-sixth Annual Report 



>\ lateral line, posterior part, 



white callarias (the white colour may not 



be noticeable in small specimens). 



,, lateral line yellow or pale in 



fresh specimens merlangus. 



Scutes of the Lateral Line. 



A basis of classification may be made out of the extent to which the 

 lateral line is continuous or broken up into separate scutes. 



The lateral line is a continuous 



groove callarias, ogac, pollachius, merlangus, 



virens, minutus, seglefinus, luscus. 

 An occasional break occurs at any 

 part in the line. Thus in one 

 callarias the scutes were separate, 

 from the middle of the third dorsal 

 fin backwards, 



Lateral line broken up into scutes 



in its whole length saida. 



Lateral line broken up into scutes 



from the beginning of the first 



dorsal fin backwards poutassou, argenteus, navaga. 



Lateral line broken up into scutes 

 from the end of the first dorsal 

 fin backwards esmarki. 



IV. Tail Fin, Posterior Edge :— 



a. straight or convex callarias. 



b. very slightly concave callarias (small), luscus. 



c. concave 1 merlangus, minutus, ogac, pollachius, 



,, distinctly forked J esmarki, argenteus. 



d. deeply cleft seglefinus, virens, poutassou, saida. 



V. Eye (Horizontal Diameter of the Orbit) : — 



a. larger than the length of the 



snout luscus, minutus, argenteus, esmarki, 



saida. 



b. eye and snout practically 



equal, being exactly the 

 same size, or one or the 



other slightly the larger.... seglefinus, merlangus, poutassou. 



c. eye less than the snout callarias, ogac, virens, navaga, pol- 



lachius, seglefinus, merlangus. 



d. eye oral, long axis vertical... pollachius. 



VI. Barbel : — 



a. absent pollachius, poutassou. 



„ „ replaced by two hooks... argenteus. 



b. minute merlangus (white), virens (black), 



saida. 



c. small, stumpy seglefinus, navaga. 



„ „ slender (in length about 



half the diameter of the 



eye) esmarki. 



d. long, stout callarias, ogac, luscus, minutus, 



navaga. 



