GADIFORMES 



481 



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. 



Flo. 511. 

 Macrurus australis, Rich. (After Giinther.) 



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

 rurinae. There is a specialised larval form (Krohnius) with filamentous 

 extensions of the pelvic fins. 



df. 



Fiu. 512. 



A, liathypleroiti lotigicauda, Gthr. B, Macmrus filicfiuda, Gthr. (After Giiuther.) adf, 

 adipose, a.J, anal, </./, dorsal, p.f, pelvic, and ]>t.f, pectoral fin ; I, filament, probably elongated 

 lepidotrichia of anterior dorsal ttn. 



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 : Bathygadus, 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). 



