88 PROCEEDINGS OF THE ACADEMY OF 



entirely anterior. Suborbital chain twice as long as wide. Preopercular 

 margin with no true spines, but membranous and crenulated by small flexi- 

 ble spiniform processes. Eacb ramus of the lower jaw internally provided 

 with several small filaments, and with two distinct pores. Symphyseal pore 

 or pores minute. 



Mouth subterminal, slightly oblique. Supramaxillary bones almost con- 

 cealed under the suborbital, extending to the vertical of the hinder border of 

 the pupil. 



Teeth equal and villiform in a band in each jaw. 



Anterior dorsal fin provided with about thirteen slender spines. Anal fin 

 with its second spine short and feeble. Caudal emarginated. 



The pharyngeal bones and branchial arches are essentially the same as those 

 of the true Micropor/ons. 



While the type of this genus possesses the filaments of the lower jaw, char- 

 acteristic of Micropogon, it is distinguished eminently by the form of the head 

 and body, and the absence of true armature of the preoperculum. The form 

 is very characteristic, and its style perhaps resembles that of the true Liostomi 

 as much as any other, although it is much more elongated. 



Type. Genyonemus lineatus Gill. 

 Syn. Leiostomus lineatus Ayres, Girard. 



The following is a revised catalogue of the representatives of the subfamily 

 Sciseninae as now restricted, which are found on the eastern coasts of North 

 America : 



Genus Cynoscion Gill. 



Cynoscion regalis Gill. 



Otolithus regalis Cuv. 

 Cynoscion caroliniensis Gill. 



Otilithus caroliniensis Cuv. et Val. 

 Cynoscion thalassinus Gill. 



Otilithus thalassinus Holbrook. 

 Cynoscion nothus Gill. 



Otolithus nothus Holbrook. 



Genus Homoprion Holbrook. 

 Homoprion lanceolatus Holbrook. 

 Homoprion subtruncatus* Gill. 



Leiostomus xanthurus Cuv. et Val. 



Homoprion xanthurus Holbrook. 



Genus Bairdiella Gill. 

 Bairdiella argyroleuca Gill. 



Genus Johnics Bloch. 

 Johnius ocellatus Girard. 



Corvina ocellata Cuv. it Val., Storer. 



Genus Menticirrhus Gill. 



Menticirrhus alburnus Gill. 



Umbrina alburnus Holbrook. 

 Menticirrhus nebulosus Gill. 



Umbrina nebulosa Cuv. 

 Menticirrhus littoralis Gill. 



Umbrina littoralis Holbrook. 



* As previously mentioned, the Homoprion subtruncatus does not appear to belong to 

 the genus Homoj,riim, but not having seen specimens, we do not yet feel justified in re- 

 ferring it to any other. 



[April. 



