SYNOPSIS OF THE ARRANGEMENT OF FISHES. 177 



Argyriosus. Profile oblique ; two dorsal fins ; ventrals smaller. 

 Flatysomus. Profile perpendicular ; ventrals minute ; one dorsal. \ 

 Hynnis. Like the last, but the tail carinated. 

 Scyn's. Slightly lengthened at the tail. 



Lampris. No scales ; dorsal and ventral opposite, and falcate.. 

 Mene. Excessively thin ; ventral fin single. 



Apolectus. Ventral fin nearly under the eye, long, and 

 pointed ; snout truncate. 



Zeus. Scales distinct ; mouth very protractile ; the spined rays 



strong ; caudal fin round ; dorsal fins two. 



Zeus. Sharp spines on the gill-covers, back, and belly ; eyes nearly 



vertical. 

 Capros. Scales rough, ciliated ; dorsal and anal spines very strong. 



Family 3. CORYPH^NIDiE. 

 Body thin ; dorsal fin smgle ; the rays long and mostly soft. 



1. Sub-faiidly CoRYPH^NiNiE. Body lengthened. 

 CoRYPH^.XA. Ventral fins longer than the pectorals. 

 Lampugus. Ventral fins equal to the pectorals. 

 Centrolophus. Vent central ; lateral line prominent. 



2. Sub-family Stromatin.^. — Body ovate, rhomboid ; ven- 



trals often none. 



Sesarikus. Ventral fin very minute. 



Stro:mateus. Ventral fins none ; dorsal and anal falcate, scaly. 

 Peprilus. Eyes very large ; dorsal with small spines in front. 

 KuRTUs. Dorsal fin short, central ; mouth large, sub- vertical. 

 Keris. Rhomboid ; first ray of the dorsal, ventral, and anal 

 fins serrated. 



3. Sub-family Trichiurin.^. — Body linear, very long; 



lower jaw lengthened and pointed; ventral fin rudi- 

 mentary or none ; no finlets. 



Trichiurus. Caudal fin none ; tail ending in a point. 



Lepidopus. Caudal fin small, forked ; ventral rudimentary ;'' 

 anal small. 



AiiMODYTES. Dorsal and anal fins fully developed ; teeth small. 



4. Sub-family. Astrodermin^. — All the rays of the dorsal 



and anal fins simple. 



Astrodermes. Body with scattered star-like scales. 



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