PARALICHTHIN.C 



Subfamily i. PARALICHTHIN^. 



Characters as given in the synopsis above. Twenty-one genera, mostly from 

 tropical and temperate seas. 



Synopsis of the Genera. 



I. Pelvics subequal and subsymmetrical. 



A. Lateral line equally developed on both sides of body ; mouth of moderate 



size or rather large, maxillary more than ^ head. 



1. Teeth in bands in both jaws ; rays of dorsal and anal not scaled. 



a. Dorsal origin above middle of eye, its anterior rays widely 



separated ; lateral line with distinct curve above pectoral ; 

 gill-rakers short and broad .... i. Tephrinectes. 



b. Dorsal origin in front of upper eye, its anterior rays close 



together ; lateral line with very slight curve above pectoral ; 

 gill-rakers long and slender . . . 2. Thvsanopsetta. 



2. Teeth uniserial in both jaws ; rays of dorsal and anal more or less 



scaled on both sides. 



a. Jaws and dentition nearly equally developed on both sides ; 



lower pharyngeals with numerous minute villiform teeth ; 

 pectoral of ocular side not prolonged, 

 a. Lateral line without distinct supratemporal branch. 



* Teeth very small, no canines anteriorly : origin of dorsal 



about above middle of eye. 

 t Gill-rakers rather long and slender ; tip of first inter- 

 haemal spine projecting in front of anal ; scales of 

 ocular side ctenoid .... 3. Hippoglossina. 



ft Gill-rakers rather short and stout; tip of first inter- 

 haemal spine feeble, not projecting ; scales of ocular side 

 cycloid ....... 4. LioGLOssiNA. 



** Teeth strong or of moderate size, some distinct canines 

 anteriorly ; origin of dorsal in front of or above anterior 

 part of eye ; tip of first interhaemal spine feeble, not 

 projecting ..... 5. Paralichthys. 



ft. Lateral line with distinct supratemporal branch. 



* Scales small or of moderate size, 58 to 100 in lateral line 



6 PSEVDORHOMBUS. 



** Scales larger, less than 50 in lateral line . . 7. Tarphops. 



b. Jaws equally developed on both sides, but dentition better 



developed on blind side ; lower pharyngeals each with 3 or 4 

 rows of strong, obtusely-pointed teeth ; pectoral of ocular side 

 more or less prolonged, often much longer than head ; scales 

 all cycloid ; origin of dorsal above anterior part of eye 



8. Xystreurys. 



B. Lateral line absent on blind side ; mouth small, maxillary less than 



J head ........ g. T.iniopsetta. 



II. Pelvics subsymmetrical, but that of ocular side the larger; teeth small or 

 of moderate size, without canines anteriorly. 



A. Scales all strongly ctenoid ; origin of dorsal above anterior edge or 



anterior part of eye ...... 10. Ancylopsetta. 



B. Scales all cycloid, embedded in skin ; origin of dorsal in front of eye 



II. Gastropsetta. 



