522 PROCEEDINGS OF THE ACADEMY OF 



roborate the identity of the two species. The Eleginus bursinus is very imper- 

 fectly known, no characteristic or distinctive character having been assigned 

 to it by Cuvier and Valenciennes, their notice chiefly comparing it with the E. 

 maclovinus. 



The following synopsis indicates the principal differences between the species. 

 Caudal emarginated. Angle of preoperculum ootusely angular. 



Greenish, with blackish margined scales E. maclovinus. 



Brownish. Second dorsal spotted E. bursinus. 



Caudal entire or convex. Angle of preoperculum nearly rec- 

 tangular. Body one-sixth as high as long E. chilensis. 



1. Eleginus maclovinus Cuv.et Val. 



Atherina macloviana Lesson, Voyage de la Coquille, Zoologie, vol. ii., p. 



202, pi. 17. 

 Eleginus maclovinus Cuv. et Val., Hist. Nat. des Poissons, tome v., p. 158, 



pi. 115. 

 Eleginus falklandicus Richardson, Voyage of the Erebus and Terror, Fishes, 



p. 30, pi. 20, figs. 13. 

 Habitat. Falkland Islands. 



2. Eleginus bursinus Cuv. et Val. 



Eleginus bursinus Cuv. et Val., Hist. Nat. des Poissons, tome v., p. 161. 

 Habitat. Port Jackson, Australia. 



3. Eleginus chilensis Cuv. et Val. 



Eleginus chilensis Cuv. et Val., Hist. Nat. des Poissons, tome ix., p. 480. 

 Habitat. Chilian coast. 



[Note. After the preceding paper had been forwarded to the Academy, it 

 was discovered that two species, (Aphritis undulaius and A. porosus,) referred by 

 Jenyns to the genus Aphrilis, not only are generically distinct, but belong to a 

 different family, and form a genus nearly related to Eleginus, which will be at 

 an early date described as Eleginops. Aphritis is apparently most nearly related 

 to the genus Percophis. 



The Committee to which was referred Dr. Slack's Handbook to the 

 Museum of the Academy of Natural Sciences, recommended that it be 

 published with tbe sanction of the Academy. The report was adopted 

 and the Committee discharged. 



On motion, permission was granted to Mr. E. D. Cope to state to 

 the Academy a few observations which he had made upon certain 

 Cyprinoid fish in Pennsylvania during the previous summer: 



He had observed that the Cyprinella analostana of Girard the only 

 known eastern representative of the genus found hitherto only in the Poto- 

 mac extended into the northern regions of the Susquehanna basin, having 

 been discovered by him in Elk Lake, Susquehanna Co. It had since been 

 found in the Delaware region, near Philadelphia, by Mr. J. Burke, who had 

 placed specimens in the Academy's aquarium ; and near Trenton, N. Jersey, by 

 Mr. Abbott, the ichthyologist. The Pliargyrus of the Susquehanna, obtained 

 from the Raystown Juniata, Bedford Co., the Meshoppen Creek, Susquehanna 

 Co., and the Elk Creek, Chester Co., he believed to be a different species from 

 that most common in the tributaries of the Delaware, which latter differs 

 materially from the New England fish called by some P. c ornutus. The 

 Leucosomi appeared to be similarly distributed. That of the Susquehanna 



[Dec. 



