92 PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 



uarae, gibbosus, therefore, sbould be applied to Eupomotis aureus of au- 

 thers, aud auriius to thcnorthern form of tlie other species. 



29. Lepomis holbrooki (C. & V.) McKay = Fomoiis spcciosm Holbr. 



30. Lepomis laotatus (Ag.) McKay = Eupomotia pallidus Gill & Jordan. 



Professor Jordan has received from the Museum of Comparative 

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

 on examination to be identical with Eupomotis jjallidus, Gill & Jordan. 



8. Genus Mesogonistius Gill. 



31. Mesogonistius chaetodon (Baiivl) Gill. 



9. Genus Enneacanthus Gill. 



This genus, as understood by me, includes EemiopUtes and Copelandia. 

 The genus Hemioplites was based by Cope on the presence of eight 

 sj^ines 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 sinnes 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 collection 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 obesus the follow- 

 ing results were obtained : 



4 specimens with D. 8, A. 3. 



40 specimens with D. 9, A. 3. 



2 specimens Avith 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 = Enneacanlhus manjayotis Gill & .Tor.; 



HemiopJUcs simulans Cope; Enneacanthus pinniger Gill & Jor. 



Having examined the types of Enneacanthus pi7miger, and compared 

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



