590 COXTEICUTIOXS TO XOPtTH AMERICAN ICHTHYOLOGY IV. 



fill uarrow, forked for more than half its length, the lobes rather pointed, 

 Pectoral fins small, not reaching to the tips of the ventrals. Color rose- 

 red with silvery lustre, darker above ; top of head orange ; a very dis- 

 tinct chocolate colored spot above the lateral line at the origin of the 

 soft dorsal fin ; another smaller one just below the end of the soft dorsal. 

 Fins immaculate, tinged with reddish. Head 3^; depth 2J. D. X, 18; 

 A. Ill, 20; scales 0-50-10. L. 8 inches. San Francisco, Cal., in deep 

 water outside the Golden Gate. 



{Ctjmatogatsttr romcens Jordan &. Gilbert, Proc. U. S. Nat. Mus. 1880, 303.) 

 tia. Lower lip without freniim. {Micromeirus.) 



92§. M. fag'grcg^atMS Gibbons. — Sparaila ; ^^ Minnow." 



Silvery, back dusky ; middle of sides anteriorly with the scales each 



with a cluster of dark points, these forming a series of longitudinal 



stripes, which extend to (>])posite the bnseof the anal; these stripes are 



iiiterrui)t»'d by .'> vertical light > ellow bars, on wliich are no black specks 



in the adult. Adult males in spring almost entirely black. Body 



elongate oval, comiu-essed, heaviest at the front of the dorsal ; caudal 



peduncle short and slender; head short; teeth very small, conical 12-0; 



dorsal spines high and rather feeble, rising rapidly to the fifth, thence 



slowly descending, the last lower than the soft rays. Cheeks with 3 



rows of scales. Head 3.^; depth 2a. D. IX, 20 ; A. Ill, 23; scales 3- 



38-11. L. o inches. Pacific coast of the United States, everywhere 



exceedingly abundant. 



{Ci/matogaster afjurcgatus Gibbons, 1. c. May 18, 1854; .Gibbons 1. c. May 30, 1854; 

 Gibbons, Proc. Acad. Nat. Sci. PLila. 1854, 1-25 : Cymutogaater nggregatus Gibbous, Proc. 

 Acad. Nat. Sci. Phiia. 1854, lOG : EoJconotus rlioiloterna Girard, U. S. Pac. R. K. Surv. 

 Pish. 193 : Dilrema aggrcgafnm (iiiiither, iv, '248.) 



310.— AMPOSSTBCIIUS Agassiz. 



Wall-eyed Perch. 



{Uolco) olus Agassiz: IJnniaithjjs Girard: Cnwaioganier* and Uyperprosopon Gibbous; 



Hypocritiddhys Gill.) 



(Agassiz, Am. .Journ. Sci. Arts. 1854, 367 : type AmpUstkhus argcntnis Agassiz.) 



Body ovate or oblong, strongly compressed. Mouth moderate, oblique 

 or almost vertical, with slender conical teeth in two series in each jaw, 

 the outer series longer; lips thin, the lower Avith or without freiium. 

 Gill-rakers long or short, slender and stiff. Pharyngeals normal. Fins 



* The geuns Cymaingaslcr Gibbons, as first defined by its author, is equivalent to the 

 earlier HohonoluH of Agassiz. Prior to this, the name Cymatogaslei- was used by Gib- 

 bous, without explanation, as Ihe generic name of the group afterwards called by him 

 Micromeirus. 



