24 BOOK OF THE BLACK BASS. 



Genera and Subgeneea. 



1. Calliurus (n. g.). 



2. LeiJomis (n. g.). 



Aplites (n. s. g.). 

 Nemocampsis (n. s. g. prov.). 

 Dioplites (n. s. g.). 



3. [Etheostoma]. 



Aplesion (n. s. g.). 



Species. 



1. Calliurus punctulatus. 



2. Lepomis pallida (s. g. Aplites). 



3. Lepomis trifasciata (s. g. Aplites). 



4. Lepomis flexuolaris (s. g. Aplites, or n. s. g. Nemocampsis). 

 6. Lepomis salmonea (s. g. Dioplites). 



6. Lepomis iiotata (s. g. Dioj^lites). 



7. Etheostoma calliura (s. g. Aplesion). 



Of these, it need here only be in general remarked that the differ- 

 ential characters employed result (1) partly from erroneous observa- 

 tion, and (2) partly from erroneous assumptions : that is, because the 

 author had not signalized certain characters in specimens previously 

 examined, but which were noticed in others examined later, he as- 

 sumed that they did not exist in the former, and therefore the two 

 differed. Inasmuch, however, (1) as all the descriptions cited, best 

 (and decidedly so) agree with species of the genus Mici'optenis, and 

 (2) as, in those respects in which they differ, they equally deviate 

 from all known forms in the waters from which they were obtained, 

 and (3) as it is in the highest degree improbable that forms better 

 agreeing with them have been overlooked, the names in question are 

 all relegated to the synonymy of Micropfenis. Within that genus in 

 almost every case some specification (chiefly as to the number of 

 rays) indicates that the several descriptions were based on individ- 

 uals of the small-mouthed type. This probability is greatly en- 

 hanced by the fact that (so far as known or recorded) the small- 

 mouthed species was the only one known from the localities where 

 Eafinesque observed. 



