18 PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM: 
The marine species were obtained from Indian River and from the 
neighboring coast; the cyprinodonts, centrarchids, and other fresh or 
brackish water species chiefly from San Sebastian River and tribu- 
taries. — 
DIODONTID 4. 
1. Chilomycterus geometricus (Schneid.) Kaup. 
URANOSCOPID&. 
2. Astroscopus y-greecum (C. & V.) Gill. 
A single fine specimen of this beautiful species. Dr. Henshail 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 laminz in the disk. 
CARANGID. 
4, Selene argentea Lac. 
Numerous fine large specimens. Specimens lately described from the 
Pacific coast under the name of Argyriosus pacificus, 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. (Chorinemus C. & V.), is perhaps of insufficient 
value for generic distinction. Some of the species of Scombroides 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. 
SCLAINID 4A. 
8. Umbrina broussoneti Cuy. & 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 Bermudan Fishes, nor 
