450 ' FISHES. 



Small species, abundant in the Indo-Pacific, disappearing 



Fig. 200.— Equula edentula. 



on the coasts of Japan and Australia. Some eighteen species 

 have been described. 



Gazza is very similar to Eiiuula, but armed with canine 

 teeth in the jaws. 



Other genera referred to this family are Lactarius (Z. dcli- 

 cahdus, common, and eaten on the East Indian coasts), Serio- 

 Iclla, Paro2ms, and Plcdystethv.s. 



Third Family — Cyttid.f:. 



Body elevated, compressed, covered with smcdl scales, or with 

 hicJders, or naked ; eye latcrcd. Teeth conical, small. No 

 hony stay for the prccojjejxidmn. Dorscd Jin composed of two 

 distinct 2wrtions. Vcntrals thoracic. No prominent p)a.2nlla 

 near the vent. Gill-opening ivide. More than ten ahdomincd 

 ccnd more than fourteen cauded vertehw. 



The fishes of the " Dory " family are truly marine, and 

 inhabit the temperate zone of the ISTorthern and Southern 

 Hemispheres. Some fossils from tertiary formations (one from 

 Licata) belong to the genus Zeus. 



