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. 



Macrurtis australis, Rich. (After Giinther.) 



Aii 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. 



A. 



af 



FIG. 512. 



A, lln.tlti/iiti.'i-oin longicaiula, Gthr. B, Macnirus JUicuuda, Gthr. (After Giinther.) adf, 

 adipose, a./, anal, d.f, dorsal, p.f, pelvic, and pt.f, pectoral h'n ; Z,|lilament, probably elongated 

 lepidotricliia of anterior dorsal tin. 



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). 



