816 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY IV. 



* 



cycloid, loosely imbricated; those of the blind side a little smaller; no 

 bony tubercles; vertical fins scaly. Anterior rays of dorsal elevated, 

 branched, with free tips. Head 3J; depth If. D. 65; A. 52; Lat. 1. 

 85. L. 18 inches. Atlantic coast of United States, very common north- 

 ward; size rather small. 



(Pleuronecte* maciilatus Mitch. Rept. in Part Fish. N. Y. 1814, 9: Plenronectes aquosus 

 Mitch. Trans. Lit. & Phil. Soc. i, 389, 1815: Rhombus aquosus Giiuther, iv, 411 : Lophop- 

 selta maculata Gill, Proc. Acad. Nat. Sci. Phila. 1862. 216.) 







45O. CITHARICHTHYS Bleeker. 

 (Hemirhombus Bleeker: Orthopsetta and Metoponops-Qtill.) 



(Bleeker, in Giiuther, iv, 420, 1832, and in Compt. Rend. Acad. Sci. Amsterdam, xiii, 

 1832: type Citharichthys caijennensis Bleeker.) 



Eyes and color on the left side. Body oblong; mouth of the large type, 

 but comparatively small, with one or two series of small, sharp teeth in 

 each jaw; no teeth on vomer or palatines. Gill-rakers moderate, slender. 

 Dorsal tin beginning just in front of eye; all the fin rays simple; vent- 

 rals of colored side on the ridge of the abdomen; no anal spine; caudal 

 fin convex or double-truncate behind. Scales thin, slightly ctenoid. 

 Lateral line nearly straight, simple. Lower pharyngeals separate, each 

 with a single row of teeth. (Citlianis, an allied genus; ty0y?, fish a 

 fish which lies on its xiOapoq or ribs that is, on its side.) 



a. Teeth in upper jaw in two rows. (Hemirhombus* Bleeker.) 

 b. Interorbital space broad ; left pectoral filamentous. 



1256. C. araimica (Cuv.) J. & G. 



Light-brown, with blackish blotches ; fins mottled ; left pectoral 

 barred. Body elliptic-ovate, the anterior profile regularly decurved, 

 lor m ing an angle above the snout. Mouth rather large, arched; max- 

 illary L'j-J in head, extending to below eye; teeth in upper jaw in two 

 series, some of the outer forming small canines; lower teeth in one row. 

 Eye large, 1 in head; lower eye in advance of upper, especially in the 

 adult; interorbital space broad, concave, as broad as eye in adult, much 

 narrower in the young. Gill-rakers short, flatfish. Dorsal rather low, 

 the longest r.i.vs L", in head; anal without spine; pectoral of left side 

 with two filamentous rays, its length 1J to 2 times head. Scales small, 

 thin, weakly ciliate, with smaller ones intermingled. Head 3; depth 



MSS. Guuther, Cat. Fish. Brit. Mus. iv, 423, 1862: type Hemirhombus 

 gnineensis Bleok. (e^tt, half; /Jo/i/JoS, Ilhombus.) 



