Girard on Fishes of California. 537 
Plate XXIV, fig. 5, represents, size of life, the species 
now described. Fig. 6 is a magnified scale from the dorsal 
zone, 
I. GASTEROSTEIDÆ. 
E GASTEROSTEUS PLEBEIUS, Girarp, Proc. Acad. Nat. Sci. Philad. 
VII. 1854, 147. 
Locality. Petaluma, Sonoma Co. 
Ill. ATHERINIDÆ. 
* ATHERINOPSIS CALIFORNIENSIS, Gimamp, Proc. Acad. Nat. Sci. 
Philad. VII. 1854, 134, 141, 151. 
Atherina Storeri, Ayres, Ms. 
Plate XXIV, figs. 1-4. 
Description. The body is very much compressed, rather 
ender in its general appearance, and gracefully subfusi- 
The greatest depth, taken immediately in advance 
of the origin of the venirals, is contained about seven times 
in the total length ; the least depth, on the peduncle of the 
fail, is about half of the greatest. The head is proportion- 
ir small, slightly convex above, and sub-quadrangularly 
Pyramida], though the sides slope inwardly downwards, 
thus tendering the inferior plane much narrower than the 
ha The snout itself is subconical in its retracted state. 
Protraetile to a certain degree, the mouth, which is moder- 
ein Size, preserves nevertheless its horizontal gape; it is 
. —* Only portion of the head, the preorbital region included, 
The ds deprived of scales, and hence perfectly smooth. 
AN teeth are very exiguous, of the velvet-like type. The 
m 996 is narrow, anteriorly rounded, and perfectly smooth. 
an onterior nostril is situated midway between the ante- 
riu of the orbit and the extremity of the snout. The 
*- !5 subeireular and of moderate size; its horizontal 
. AI enters about four times and a half or a little more 
TANAL, B. s. y. n. 9 
