PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM, 25 
NOTES ON A COLLECTION OF FISHES FRO SAN DIEGO, CAL- 
IFORNIA. 
By DAVID S. JORDAN and CHARLES Hi. GILBERT. 
The writers have spent the greater part of the month of January, 
1880, in the collection and study of fishes at San Diego, Cal., in the inter- 
ests of the United States Fish Commission. As some of the species 
obtained are new to science, and others new to the United States fauna, 
it is thought advisable to present an annotated list in advance of the 
publication of a more extended report. — 
HIPPOCAMPID. 
1. Hippocampus ingens Girard. 
One large specimen seen. 
SYNGNATHID. 
2. Syngnathus leptorhynchus Girard. 
(Syngnathus arundinaceus Girard. ) 
Not uncommon. 
PLEURONECTID.2. 
3. Paralichthys maculosus Girard. 
‘Very abundant. There seems to us no doubt of the correctness of 
Lockington’s identification of the ‘“Uropsetta californica” with this spe- 
cies. The caudal fin in the adult is somewhat double concave; in the 
young the middle rays are more produced. This species is both dextral 
and sinistral. Out of twenty-six examples examined in reference to this 
point fifteen were found to be sinistral and eleven dextral. 
4. Citharichthys sordidus (Girard) Giinther. 
Not common; one specimen seen. 
5. Hypsopsetta gutiulata (Girard) Gill. 
Common. 
SOLEIDE. 
6. Aphoristia atricauda sp. nov. 
Body oblong-lanceolate, anteriorly somewhat blunt, regularly nar- 
rowed behind and ending in a point, the snout rather abruptly truncate, 
eyes and color on the left side. Eyes very small, nearly even behind, 
the upper eye the larger and extending farthest forward. A single nos- 
tril in front of the interorbital space and apparently a single smaller 
one below it. Mouth moderate, extending to opposite the eye, somewhat 
