A14 Storer on the 
operculum of a silvery white color; operculum, a 
bright metallic yellow. 
The Dorsal, pectoral and caudal fins, color of the 
back; ventral and anal fins, lighter. 
The Dorsal fin commences half way between the 
head and the tail; rather longer than high. 
The length of the Pectorals is two lines; height, 
six lines. 
The Ventrals are very small. 
The Anal fin is situated under the middle of the 
dorsal fin. 
The Caudal fin rounded. 
The fin rays as follows: D.12; P.15; V.6; A. 
10; C. 18. 
In the smaller specimens, a bright yellow spot is 
seen at the origin of the dorsal fin, while they are 
swimming; after death, this mark is not observed. 
H. flavula. Mitchell. The Basse Fry. 
Trans. Lit. et Philosoph. Soc. N. Y. p 
439. 
5 
Boston Journal of Natural History, wi i. p. 418. i 
Meeting two years since with a fish belonging to 
the genus “Hydrargira,” not described by Le Sueur 
in his paper upon that genus, I published a descrip- 
tion of it, under the name of “trifasciata,” in the 
first volume of this Journal. I have before me at 
the present moment, (June 13th, 1838,) a second 
specimen of this species, sent me by Dr. Yale ; 
and I am satisfied it is the same fish that Mitch- 
ell described as the **Esoz flavulus,” in his “ Fishes 
