PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 327 
This species was described soon after by Dr. Ayres in the Proceedings 
of the California Academy of Sciences, 1854, p. 19, as Gila grandis. It 
is apparently identical with the prior Ptychochilus oregonensis of Richard- 
son. This species is now no longer called “Salmon Trout,” its market 
name being ‘ Pike.” 
_ The small-scaled Ptychochilus (? vorax of Girard) was not then noticed 
by Dr. Ayres. 
5. Catostomus occidentalis Ayres (1. ¢.). 
Soon after reconsidered by Dr. Ayres, in the Proceedings of the Cali- 
fornia Academy, under the same name, and also still later by Professor 
Agassiz (Am. Journal Sci. Arts, 1855), still as Catostomus occidentalis. 
SAN FRANCISCO, CAL., March 20, 1880. 
NOTE ON “SEMA” AND “DACENTRUS.” 
By DAVID S. JORDAN. 
In the Bulletin of Hayden’s United States Geological and Geograph- 
ical Survey, vol. iv, No. 2, 1878, I published ‘‘ Notes on a collection of 
fishes from the Rio Grande at Brownsville, Tex.” In this paper are 
characterized two new species, ‘ Sema signifer” (p. 399), and “ Dacentrus 
lucens” (p. 667). , 
These species must be suppressed. The former is a foetal Embiotocoid, 
apparently Cymatogaster aggregatus, the other is the young of Hystero- 
carpus traskii. 
The latter discovery was made before the paper was printed, but by 
inadvertence it was sent to the press during my absence in the field. 
Of course neither of these species really came from the Rio Grande 
at Brownsville, Tex., and their presence in a jar otherwise containing 
only Texas fresh-water fishes is the only excuse for the gross blunders 
as to their relationships. 
SAN FRANCISCO, CAL., March 20, 1880. 
DESCRIPTION OF A NEW SCORPZENOID FISH (SEBASTICHTHYS 
PRORIGER), FROM MONTEREY BAY, CALIFORNIA. 
By DAVID 8S. JORDAN and CHARLES H. GILBERT. 
Allied to S. ovalis and S. elongatus, having the mouth, spines, and fins 
of the former and the color and general appearance of the latter. 
Body elongate, a little deeper than in S. elongatus and somewhat 
more compressed, tapering slowly backward into a slender caudal pe- 
dunele, which is rather shorter and stouter than in S. elongatus. 
Head rather short and small, the profile somewhat steeper than in S. 
elongatus. Mouth small, much as in 8. ovalis, the short, narrow maxil- 
lary extending to below the middle of the eye, the premaxillary on the 
