70 BOOK OF THE BLACK BASS. 



prey, and easily caught with the hook. I shall divide them 

 into two subgenera. I had wrongly blended this genus and the 

 Idheli under the name Lepomis. 13. G. of my Prodr. N. G." 

 (RAFINESQUE, Ich. Ohi. 30, 1820.) 



APLITES Rafinesque, 1820. " Only one flat spine on the 

 opercule decurrent in a small medial opercule : first ray of the 

 thoracic fins, soft or hardly spiny. Meaning, single weapon." 



(RAFINESQUE, Ich. Ohi. 30, 1820.) 



NEMOCAMPSIS Rafinesque, 1820. "This fish [Lepomis flexuo- 

 laris~] might perhaps form another subgenus, By the large month, 

 head without upper sutures, spine hardly decurrent, nearly 

 equal jaws, gill-covers, lateral line, etc. Its tail and pre- 

 opecule are somewhat like Calliurus. It might be called Ne- 

 mocampsis, meaning flexuose line." (RAFINESQUE, Ich. Ohi. 31, 

 1820.) 



DIOPLITES Rafinesque, 1820. " Opercule with two spines 

 above. First ray of the thoracic fins spiny. Lateral line 

 curved as the back. Meaning two weapons." (RAFINESQUE, 

 Ich. Ohi. 32, 1820.) 



ETHEOSTOMA Rafinesque, 1820. " Body nearly cylindrical 

 and scaly. Mouth variable with small teeth. Gill cover 

 double or triple unserrate, with a spine on the opercule and 

 without scales. Six branchial rays. Thoracic fins with six 

 rays, -one of which is spiny. No appendage. One dorsal fin 

 more or less divided in two parts, the anterior one with entirely 

 spiny rays. Vent medial or rather anterior. 



A singular new genus, of which I have already detected five 

 species, so different from each other that they might form as 

 many subgener^,. Yet they agree in the above characters, and 

 differ from the genus Sciena by the shape of the body and 

 mouth, and the divided dorsal fin. The name means different 

 mouths. I divide it into two subgenera. They are all very 

 small fishes, hardly noticed, and only employed for bait; yet 

 they are good to eat, fried, and may often be taken with 



