PHISTIPOMATIDiE. 273 



B. Air-bladder not contracted. 



1. TeetJi in the jaws. 



a. Mouth moderately protractile. 



* Preeoperculum serrated. 



Seven branchiostegals. A central groove behind the sym- 

 physis of the lower jaw. The vertical fins not scaly, or 

 at the base only. Teeth of the jaws vilUform 4. Pristipoma 



Seven (?) branchiostegals. A central gfoove'behind the sym- 

 physis of the lower jaw. In each jaw an external series 

 of very stout and conical teeth 5. Coitodon. 



Seven branchiostegals. A central groove behind the symphysis 

 of the lower jaw. The soft portions of the vertical fins 

 scaly to their margin 6. HiEMUL0N.| 



Seven branchiostegals. Chin covered with barbel-like papillae. 7. Hapalogenys. 



Six or seven branchiostegals. Lower jaw with pores, but 

 vrithput central groove. The upper profile of the head 

 parabolic 8. Diagramma. 



Seven branchiostegals. The spinous dorsal very low, scarcely 



continuous with the soft, with eight spines 9. Hypbroglyphk. 



Six branchiostegals. Body elevated ; the upper profile of the 



head concave 10. Lobotes. 



Five branchiostegals. Prjeorbital with a spine directed back- 

 wards 13. SCOLOPSIS. 



Five or six braneliiostpgals. Praiorbital not armed. Caudalis 



deeply forked 14. Hbtbrognathodon. 



Seven branchiostegals. Lower jaw without pores. Dorsal fin 



with ten spines 17. Pristipomoides. 



* Preeoperculum entire. 



Canine teeth ; distance between the eye and the angle of the 

 mouth great ; more than three series of scales between 

 the eye and the angle of the prseoperculum. Dorsal 

 scaleless 15. Dentex. 



Canine teeth ; distance between the eye and the angle of the 

 mouth great. Three series of scales between the eye and 

 the angle of the praeoperculum. Dorsal scaleless 16. Synaoris 



Canine teeth ; distance between the eye and the angle of the 

 mouth small. More than three series of scales between 

 the eye and the angle of the praeoperculum. Dorsal 

 scaleless •. 18. Pentapus. 



Four branchiostegals. Canine teeth none 19. Chjetopterus. 



Seven oranchiostegals. Canine teeth none , 20. Apharews. 



Dorsal scaly along the base 23. CiESio. 



h. Mouth very protractile. 



Spines of the fins very stoat ; twelve in the dorsal fid 11. Datnioidbs. 



Dorsal^; anal— ^ 12. Gerres. 



Spines of the fins feeble. Dorsal scaleless. Vomerine teeth... 21. M^ena. 

 Spines of the fins very feeble. Dorsal scaleless. Vomerine 



teeth none 22. Smaris. 



T 



