FISHES — EMBIOTOCOIDAE — ABEONA TEOWBRIDGII. 187 



cheeks and opercle are comparatively large, constituting two sub-concentrical rows on the 

 cheeks, and three oblique ones on the opercle. The opercle itself is rather narrow. There are 

 five hranchiostegal rays on either side, the lowest of which being exceedingly slender and almost 

 filiform, whilst the others are well developed, flattened, and curved. 



The spinous portion of the dorsal is higher than the soit, composed of nine rays, the sixth of 

 which being the highest, whilst the others go diminishing gradually anteriorly and posteriorly, 

 giving to its outline an arched appearance. The soft portion of that same fin, the anterior ray 

 of which is a little higher than the last spine, gradually diminishes in height backwards and 

 extending over a base but a fraction longer than the spinous portion. The rays bifurcate only 

 once. The caudal fin constitutes about the fifth of the entire length ; its posterior margin is 

 sub-crescentic, like that of several species of Emhiotoca. The rays bifurcate twice. The anal is 

 short, but comparatively deep, sub-convex upon its external margin. The spines at the anterior 

 margin are slender and well developed, the first is the shortest of all the rays, but the second is 

 equal to, if not longer than, the posterior articulated rays ; the third is still longer than the 

 second. Its base enters about six times and a half in the total length, being less considerably 

 than the base occupied by the articulated rays of the dorsal. The soft rays bifurcate once upon 

 their length. The insertion of the ventrals is under the vertical line of the third dorsal spine; 

 their tips extend a little beyond the anterior margin of the vent. The articulated rays bifurcate 

 twice; their external spine is slender and very acute. The entire base of the pectorals is placed 

 in advance of the anterior dorsal spine, their posterior extremity is made to reach the vertical 

 line of the first or second articulated dorsal ray, when bent backwards alongside of the body. 

 The rays bifurcate twice. The formula of the fins is : 



Br. V : V ; D IX, 14 ; A III, 1.5 ; C 3, 1, 6, 6, 1, 2 ; V I, 5 ; P 16. 



The scales are proportionally large, particularly on the flanks. The lateral line, which is 

 concurrent with the dorsal outline, contains about forty-one scales. Four longitudinal rows are 

 found to exist between the latter and the dorsal groove, and twelve to fourteen between the 

 lateral line and the abdominal outline. The scales are usually smaller under the throat, on 

 the abdomen, and opposite the base of the anal fin. No scales exist on either of the fins. The 

 typical scales (figs. 8 — 10) are deeper than long, almost rounded anteriorly as well as on the 

 other sides ; the posterior margin, however, is the most convex. 



The ground color is reddish brown above with irregularly interspersed purplish spots of a 

 cloudy aspect. The sides of the head, the lower portion of the flauks are silvery white, and 

 the abdomen yellowish. The dorsal, caudal, pectoral, and anal, are uniform straw color or dull 

 yellow, the latter being moreover provided, upon its anterior margin, with a diffused purplish 

 spot, not represented on the figure. The ventrals, yellowish upon their base, are deep purple 

 on their remaining portion. 



The label accompanying this species having unfortunately been lost, the habitat of this species 

 cannot be given more accurately than between San Diego and San Francisco, California. 



Plate XXXIV, fig. 6, represents the female sex of Abeona trowhridgii, size of life. 



Fig. ^T is a section across the line of greatest depth. 



Fig. 8, a dorsal scale. 



Fig. 9, a scale from the lateral line. 



Fig. 10, an abdominal scale. 



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