92 PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 



name, gihhosuSj therefore, should be applied to Eupomotis aureus of au- 

 thors, and auritus to the northern form of the other species. 



29. Lepomis holbrooki (C. & V.) McKay = Pomotis speciosus Holbr. 



30. Lepomis notatus (Ag.) McKay = Eupomotis jyallidiis Gill »S: Jordan. 



Professor Jordan has received from the Museum of Comparative 

 Zoology some of Agassiz's types of Pomotis notaUis, which species proves 

 on examination to be identical with Eu])omoUs pallidus, Gill «& Jordan., 



8. Genus Mesogonistius Gill. 



31. Mesogonistius chaBtodon (Baiivl) Gill. 



9. Genus Enneacanthus Gill. 



This genus, as understood by me, includes Hemiopliies and Copelandla. 

 The g^nus Hemioplites was based by Cope on the presence of eight 

 spines in the dorsal fin and four in the anal, I learn from Professor 

 Jordan's notes that Cope's original type of Hemioplites simulans has 

 really nine spines in the dorsal. Dr. Edward J. Nolan, who has recently 

 examined the specimen, also informs me that there are nine spines in 

 the dorsal. In a collectiou of young specimens of Enneacanthus marga- 

 rotis from Virginia, which I have examined in the National Museum, 

 there were several specimens with the fin formula D. 9, A. 4, several 

 with the formula D. 10, A. 4, and the remainder with the formula D. 9, 

 A. 3. That is, some of these specimens, all collected at the same time, 

 and evidently of the same species, were Enneacanthus margarotis, others 

 were Hemioplites simulans, and the remainder would represent a second 

 species of Copelandia. 



In 120 specimens of Enneacanthus margarotis examined by me, the re- 

 sults were as follows : ' 



13 specimens with D. 8, A. 3. 



89 specimens with D. 9, A. 3. 



9 specimens with D. 10, A. 3. 



5 specimens with D. 10, A. 4. 



4 specimens with D. 9, A. 4. 

 In the examination of 53 specimens of Enneacanthus ohesus the follow- 

 ing results were obtained : 



4 specimens with D. 8, A. 3. 



46 sx^ecimens with D. 9, A. 3. 



2 specimens with D. 10, A. 3. 



1 specimen with D. 10, A. 4. 

 In view of these facts, I include Hemioplites and Copelandia under 

 Enneacanthus. 



32. Enneacanthus simulans (Cope) McKay = Enneacanthus margarotis Gill & Jor.; 



HanloplUcs simulans Cope; Enneacanthus pinniger Gill & Jor. 



Having examined the types of Enneacanthus pinniger^ and compared 

 them with large-finned males of Enneacanthus margarotis, I am unable 



