35(3 SCOMBRI I) ^. 



Third (J roup: Cyttina. Scomhrkl(V\\\i\itvfo distinct dmsions of 

 the dorsal liii, the spinous less developed than the soft. Body ele- 

 vated, covered with very small or rudimentary scales or with bony 

 protuberances. 



Bony plates along the base of the dorsal and anal fins ... 16. Zeus. 



Base of the fins not armed 17. Cyttus. 



Body witli large, conical, Ijony protuberances 18. Oreosoma. 



Fourth f/rofq) : Stromateina. Scombridce with one long dorsal fin 

 without distinct spinous division. Toothed processes extend into the 

 oesophagus. 



Ventrals none in an adult state ; body more or less ele- 

 vated 19. Stkomateus. 



Ventrals well developed ; body more or less oblong 20. Centrolophus. 



Fifth group : Coryphsenlna. Scombrida; with one long dorsal fin 

 without distinct spinous di\-ision. No teeth in the oesophagus. 



Ventrals thoracic, 1/.5. Dorsal many-rayed, beginning on 



theocciput. Scales very small. ProeoiJerculum entire. 21. CoRVPHyENA. 

 Ventrals thoracic, 1/5. Dorsal beginning on tlie back. 



Scales ratlier small. Prreoperculum entire 22. Brama. 



Venti-als subjugidar, 1/5. Scales large, provided with a 



hook ; prajopercidar margin spiny 23. Tabactes. 



Ventrals jugular, four-rayed. Dorsal beginning on the 



forehead. Scales of moderate size 24. Pteuaclis. 



Ventrals thoracic or subjugidar, 1/5. Scales minute. 



Pra!023ercular margin spiny 25. Sciiedophi r.rs. 



Ventrals slender, subjugidar. Dorsal beginning on the 



neck, composed of unarticulated widely-set spines. 



Scales minute, granular 26. Diana. 



Ventrals thoracic, rudimentary. Dorsal occupying the 



posterior half of the back . . 27. Au.sonia. 



Ventrals thoracic, 1/5. Dorsal beginning on the back. 



Scales none 28. Mene. 



Ventrals many -rayed 29. Lampris. 



First Group. SCOMBRINA. 



Scombridce with two dorsal fins, the spinous portion being separate, 

 and much less developed than the soft. Body oblong, without or 

 with very small scales. 



1. SCOMBER*. 



Scomber, sp., Artedi, Genera, p. .30. 



Scomber, Cur. Rhine Anim. ; Cui\ Sf Val. viii. p. 6. 



Body rather elongate ; cleft of the mouth wide. The first dorsal 



* 1. Scomber delphuialis, (Cammers.) C. 4~ V. viii. p. 53. — Madagascar. 



2. japonicus, Houtt. Mem. Harl. sx. p. 331 ; C.(SfV. viii. p. 54. — Japan. 



3. 



1 



