GADIFORMES 



reduced, the mouth, which is protractile, diminishes in size, and a pro- 

 minent rostrum develops above it (Fig. 511). The rostral process is sup- 

 ported by the enlarged nasals and preorbitals. The eyes are very large. 



^^MMMim 



Pig. 511. 

 Macrurus australis, Rich. (After Gunther.) 



An anterior spinous ray is found in the dorsal of the sub-family Mac- 

 rurinae. There is a specialised larval form (Krohmus) witli filamentous 

 extensions of the pelvic fins. 



Fig. 512. 



A, Bathypterois longicaiida, Gthr. B, Macrurus filicotida, Gthr. (After Gunther.) adf, 

 adipose, a.f, anal, </./, dorsal, p.f, pelvic, and pt.f, pectoral (in ; ?,itilament, probably elongated 

 lepidotrichia of anterior dorsal fin. 



Sub-Family Bathygadinae. Such primitive genera as Gadomus have 

 a terminal mouth, no rostrum, nearly continuous dorsal fins, a scapular 

 foramen, and cycloid scales. 



Gadomus ; Bathyyadus, Gthr. 



Sub-Family Macrurinae. With a spine on the first dorsal fin, and 

 the first gill-slit narrowed to a small aperture. 



Macrurus, Bl. ; widely distributed in deep seas (Figs. 511-12). 



