439 



Teeth deciduous on vomer and palate, or absent 



from them. Dorsal with 12 or 13 spines 14. THEBAPON. 



Seventh group. PRISTIPOMATINA. 



Preopercle serrated or entire. Mouth moderately protractile. Teeth 



in the jaws. Dorsal single ; three anal spines. Air-bladder destitute of 



any constriction. 



B. vii. Preopercle serrated. Mouth horizontal ; 

 a median groove along the under surface of 

 the lower jaw 15. PHISTIPOMA. 



B. vi-vii. Preopercle serrated ; opercle with 

 short points ; barbel-like papillae on the man- 

 dible. Villiform teeth in jaws, vomer, and 

 palate, with an outer enlarged row in the 

 former. Spinous dorsal low and deeply cleft ; 

 aual with three spines. Fins covered with 

 fine scales 16. HAPALOGENYS. 



B. vi-vii. Preopercle serrated. Mouth small ; 

 head very convex above ; pores on under sur- 

 face of lower jaw, but no median groove .... 17. DIAGRAMMA. 



B. vi. Upper profile of the head concave. Pre- 

 opercle serrated. Lower jaw the longer 18. LOBOTES. 



B. v. Preopercle serrated. A backwardly-directed 

 spine on the infraorbital ring of bones; opercle 

 with a weak spine 19. SCOLOPSIS. 



B. vi. Preorbital high. Preopercle entire. 

 Generally strong canines. More than three 

 rows of scales on the preopercle. Air-bladder 

 notched posteriorly 20. DENTEX. 



B. vi. Preorbital high. Preopercle serrated or 

 entire. Canines not very strong, at least in 

 the upper jaw. Three rows of scales on the 

 preopercle 21. SYNAGEIS. 



B. vi. Preorbital low. Preopercle entire. Gene- 

 rally strong canines. Three or more rows of 

 scales on preopercle 22. PENTAPTJS. 



B. vii. Preopercle entire. Canine teeth absent. . 23. APHABEUS. 



B. vi. Preopercle entire. Vomer edentulous. 



Mouth protractile 24. SMAEIS. 



B. vi-vii. Preopercle entire or finely serrated. 



Palate edentulous 25. CJESIO. 



B. vii. Preopercle entire. Villiform teeth in 

 jaws, vomer, and palate. Canines present. 

 Scales of moderate size . . 20. APIUON. 



Eighth group. GEEKJNA. 



B. vi. Body elevated or oblong. Preopercle serrated or entire. 

 Mouth very protractile. No canines. A single dorsal. Air-bladder 

 simple. 

 Preopercle serrated. A deeply notched dorsal fin ; 



caudal rounded. Anal spines 3 27. DATNIOIDES. 



Preopercle mostly entire. Inferior pharyngeal 

 bones generally united by a suture. Dorsal 



