122. PLEURONECTID.E BOTHUS. 815 



9 



jjj. Teeth norie ; eyes sinistral ; caudal fin subsessilc ; body translu- 

 cent TIIYRIS, 462. 



aa. Pectoral iins one or both reduced or "wanting; margin of preopercle usually not free. 



o. Vertical fins free from the caudal. 



p. Eyes sinislral; caudal subsessile; left pectoral only 

 present; lateral line present, arched on eyed side, 



straight on blind side MOXOLENE, 463. 



pp. Eyes dextral; ventral of right side continuous with 

 anal; pectoral fin single small, or wanting; scales 

 very rough; lateral line single, straight ; teeth villi- 



form, on blind side only ACHIRUS, 464. 



oo. Vertical fins confluent around the pointed tail; body 

 sinistral; no pectoral fins ; one ventral present; eyes 

 very small. 



q. No lateral line ; ventral free from anal ; teeth 

 minute, on' blind side only; snont not hooked; 

 scales ctenoid APHORISTI A, 465. 



449. BOTHUS Rafinesque. 

 Turbots. 



(Rhombus Cuvier, not of Lace"pede: LepidorJiombus Gthr. : Scophthalmus Raf. : Lophop- 



seita Gill.) 



(Rafiuesque, Caratteri di Alcuni Nuovi Generi, 1810, 23: type Botlms rumolo Raf. = 

 Pleuronectes rhombua L.) 



Eyes and color on the left side. Body broadly ovate, strongly com- 

 pressed; mouth large, oblique, the maxillary reaching to beyond eye; 

 teeth subequal, in villiform or cardiforrn bands, sometimes in single 

 series; a small patch of teeth on the vomer. Scales small, ctenoid or 

 cycloid, sometimes obsolete; skin sometimes with bony tubercles. Lat- 

 eral line strongly arched in front, without accessory branch. Dorsal 

 fin beginning on the snout; anal fin not preceded by a spine; ventral 

 of left side free from the anal, inserted nearly on the ridge of the ab- 

 domen, its base broad, the rays well separated. Species sometimes of 

 large size, mostly of the Atlantic. (/30oc, deep.) 



a. Scales developed, cycloid; no bony tubercles. (Botlms.*) 



1255. II. maculatns (Mitch.) J. & G. Sand-flounder; Window-pane. 



Light olive brown, almost translucent, everywhere marbled with 

 paler, and with many roundish irregular blackish blotches; fins spot- 

 ted. Body broadly rhomboid, very strongly compressed; interorbital 

 area flattish; eye rather large, about equal to snont; teeth in both 

 jaws in one series laterally, in a very narrow band in front; maxillary 

 nearly half length of head. Gill-rakers rather long and slender, nu- 

 merous, about 25 below the angle of the arch. Scales well developed, 



* = Loplwpsetta Gill, Proc. Acad. Nat. Sci. Phila. 1862, 216: type Pleuronectes macu- 

 latus Mitchill, 



