126 PROCEEDINGS OF THE ACADEMY OF 



6. Orycnopsis {Gill.) Scomber unicolor Geoffroy. 



7. Sarda (Cuv. 1829.) Scomber pelamys Briinnich. 



8. Cybium {Cuv.) Scomber commersonii Lace'pdde. 



9. Lepidocybium (Gill.) Cybium flavobrunneum Smith. 



10. Apodontis (Bennett.) Apolectus immunis Bennett. 



11. Acanthocybium (Gill.) Cybium sara Bennett. 



12. Thyrsites (Cuv.) Scomber atuu Euphrasen. 



13. Thrysitops (Gill.) Thyrsiies lepidopoides Cuv. et Val. 



14. Ruvettus (Cocco.) Ruvettus pretiosus Cocco. 



15. Epinoula (Poey.) Epinnula magistralis Poey. 



16. Prometheus (Lowe.) Gerapylus prometheus Cuv. et Val. 



17. Dicrotus (Giinther.) Dicrotus armatus Gilnther. 



GEMPYLIN^E Gill. 



18. Gempylus (Cuv. 1829 ) Gempylus serpens Cuv. 



Thus limited, the family Scombroids appears to be a very natural one. The 

 Lepituroidoz appear to be represented by four genera : 



1. Lepturus (Artedi.) Trichiurus lepturus Linn. 



2. Euplearogrammus (Gill.) Trichiurus muticus Gray. 



3. Lepidopus (Gouan.) 



4. Aphanopus (Lowe.) 



The other genera included in the family of Scombroids by Dr. Gunther may 

 be variously distributed. 



Naucrates Raf., Cubiceps Lowe, Neplomenus Gthr., Platystethus Gthr. and pos- 

 sibly Elacate Cuv., appear to belong to the family of Carangoids. 



Echeneis (L.) is the representative of a peculiar family. 



Gasleroschisma Rich, and Nomeus Cuv. we also believe to represent a distinct 

 family. 



Ditrema (Temm. et Schlegel) belongs to the family of Embiotocoids, as has 

 been shown by Mr. Brevoort, and is very closely allied to Embiotoca and Phane- 

 rodon furcatus. 



The group of Cyttina is equivalent to the family of Zenoidae Lowe, and is 

 well entitled to rank as such. It is divisible into two subfamilies and five 

 genera : 



ZEIJLE (Bon.) 



1. Zeus (Artedi.) Zeus faber Linn. 



2. Zenopsis (Gill.) Zeus nebulosus Temm. et Schley el. 



3. Cyttus (Gunther.) Capros australis Richardson. 



4. Cyttopsis (GUI.) Zeus roseus Liowe. 



OREOSOMATIN^J. 



5. Oreosoma (Cuv. et Val.) Oreosoma atlanticum Cuv. 



Zenopsis is distinguished by the presence of osseous plates at the base of 

 the dorsal, and of three anal spines, &c. The Zeus ocellatus of Storer is a 

 member. The genus Cyttopsis has no plates at the bases of the fins, but several 

 intervene between the ventral fins and the anus, and each ventral has a spine 

 and eight branched rays. 



The Stromateina appear to be entitled to family rank as much as the Caran- 

 goids. The genera are the following: 



1. Stromateus (Artedi.) Stromateus fiatola Z. 



2. Chondroplites (Gill.) Stromateus atous Cuv. et Val. 



3. Stromateoides (Bleeker.) Stromateus cinereus Bloch. 



4. Apolectus (Cuv. et Val ) Stromateus niger Bloch. 



5. Peprilus (Cuv.) Sternoptyx Gardenii (Bloch) Schneider. 



6. Poronotus (Gill.) Stromateus triacanthus Peck. 



[March, 



