842 CONTKIBUTIONS TO NOKTH AMERICAN ICHTHYOLOGY IV. 



clouds ; fins with dark spots, some of whieh form bars parallel with the 

 rays; left side white, usually more or less mottled, sometimes barred. 

 Form oval, the outlines regular. Eyes small, separated by a flattish 

 space wider than eye. A concealed spine in front of upper eye. Scales 

 on nape and chin 3 or 4 times size of others. Fins moderate, scaly on 

 both sides; caudal about as long as head. Head 3^; depth If. D. 

 55; A. 41; Y. 4; Lat. 1. 75. L. 6 inches. Atlantic coast, common from 

 Cape Cod southward ; ascending rivers. 



{Pleurouectes achirus L. Syst. Nat. ed. 10, i, 268: Pleuroneotes lineatus L. Sysfc. Nat. 

 ed. 12, i, 458: Acliirus mollis Storer, Fish. Mass. 400: Solca achirus Giinther, iv, 476.) 



Snbsp. browni (Gthr.) J. & G. 



Cross-bands broader, as broad as eye; left side immaculate. Gulf of 

 Mexico and southward. 



(Solca Irowni Giinther, iv, 477.) 



465.— APHORISTIA Kanp. 



(Kaup, Wiegmann's Arcliiv. 1858, 106: type Archirus ornattis Lac^p^de.) 



Eyes and color on the left side. Body elongate, lanceolate in out- 

 line, rounded forward, tapering to a point behind, strongly compressed. 

 Mouth small, unsymmetrical, twisted toward the colored side; teeth 

 small; eyes very small, close together; snout short, not produced, 

 with a hook; lips conspicuous, not evidently fringed; one nostril pres- 

 ent, with a slight barbel, just before lower eye. Scales ctenoid, of mod- 

 erate size, covering the whole body nearly uniformly; edge of preop- 

 ercle covered by the scales; no lateral line on either side. Dorsal fin 

 low, beginning just behind the snout, confluent with the anal around 

 the tail; pectoral fins obsolete; ventral fin of colored side only pres- 

 ent, not continuous with the anal. Gill-openings very narrow. Warm 

 seas, [dwofiiaj a dearth; fo-ro?, a limb.) 



1300. A. atricauda Jor. & Gilb. 



Olivaceous, with very distinct dark streaks along the rows of scales, 

 and with numerous vertical half- bars; those above lateral line alter- 

 nating with those below, anteriorly, nearly meeting them behind; ver- 

 tical fins black posteriorly. Body oblong-lanceolate, comparatively 

 slender, not very blunt anteriorly. Mouth reaching to opposite the 

 eye; lips large; teeth small, present on both sides. Scales small, much 

 smaller on the head; those on blind side similar. Dorsal beginning on 

 the head; ventral well separated from anal. Head 5 J; depth 3^. D. 

 100; A. 80; Lat. 1. 105. L. 5 inches. San Diego, Cal. 



(Jordan & Gilbert, Proc, U. S. Nat. Mus. 1880, 23.) 



