18 PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 



The marine species were obtained from Indian Eiver and from the 

 neighboring coast; the cyprinodonts, centrarchids, and other fresh or 

 brackish water species chiefly from San Sebastian River and tribu- 

 taries. 



DIODONTID^. 



1. Chilomycterus geometricus (Schneid.) Kaup. 



URANOSCOPIDiE. 



2. Astroscopus y-grcecum (C. & V.) Gill. 



A single fine specimen of this beautifnl species. Dr. Henshall in- 

 forms me that this specimen in life exhibited strong electrical powers, 

 these powers apparently having their seat in the naked skin on the top 

 of the head. So far as I know, such phenomena have not hitherto been 

 ascribed to any fish of this family. I therefore put this statement on 

 record, in hopes that subsequent observers of this rare fish may be able 

 to verify it. 



ECHENEIDID^. 



3. Echeneis naucrates L. 



A single specimen, with 22 laminae in the disk. 



CARANGID^. 



4. Selene argentea Lac. 



Kumeroiis fine large specimens. Specimens lately described from the 

 Pacific coast under the name of Argyriosus pacijicus, Lockington, appear 

 to belong to this species. 



5. Carangus chrysus (Mitch.) Girard. 



6. Chloroscombrus chrysurus (Linn.) Gill. 



7. Oligoplites occidentalis (L.) Gill. 



Several fine specimens of this highly interesting species. The character 

 of five (instead of seven) dorsal spines, assumed to distinguish Oligoplites 

 from Scombroides Lac. {Gliorinemus C. & V.), is perhaps of insufficient 

 value for generic distinction. Some of the species of Scomhroides have, 

 however, the dermal productions really scale-like, instead of the irregular 

 linear imbedded ridges found in Oligoplites. This character may for the 

 present, until all the species of the group are examined, be held to dis- 

 tinguish the latter genus. 



SCI^NID^. 



8. Umbrina broussoneti Cuv. &, Val. 



Two fine specimens of this West Indian species were obtained by Dr. 

 Henshall. These are the first yet recorded from the United States. The 

 species is not included in Goode's Catalogue of Bermudau Fishes, nor 



