[29] FLOUNDERS AND SOLES. 253 



Dr. Day has adopted Giglioli's determination of the identity of this 

 species with the Arnoglossus bosci. The descriptions of the latter spe- 

 cies certainly agree closely with our specimen of Lepidorhombus. We 

 have therefore placed bosci in the synonymy of Whiff-iagonis. Vinci- 

 guerra apparently regards bosci as specifically distinct from the others, 

 although he places both in the genus Arnoglossus. The appropriate 

 specific name of megastoma has been usually taken for this species, but 

 the unmusical name of whiff-iagonis applied to it by Walbaum has ten 

 years' priority. This name is given in honor of the " Reverend George 

 Jago, of Loo." 



Our specimen is from the coast of France. 



26. LEPIDORHOMBUS NORVEG-ICUS. 



Pleuronectes cardina Fries, Vet. Akad. Handl., 1838, 181 (not of Cuvier). 

 Rhombus norcegicus Giinther, Cat. Fish. Brit. *Mus. , iv, 1862, 139 (after Fries). Collett, 

 Norges Fiske, 1875, 139. (Christiania; Bergen; Bodo.) 



Habitat. — South coast of Norway to the Arctic circle. 



This species is known to us from descriptions only. According to 

 Professor Collett, u it is distributed, although in scanty numbers, from 

 the south coasts up to the polar circle." It would appear to be very 

 close to the preceding species, differing somewhat in the numbers of 

 the fiu-rays. 



Genus XV.— CITHARUS. 



Pleuronectes Bonaparte, Catalogo Metodico dei Pesci Europei, lb46 (linguatula, the 



only Linnaean species mentioned). 

 Citharus Bieeker, Comptes Rendus Acad. Sci. Amsterdam, xiii. Pleuronect., 6, 1862 



(linguatula) . 



Type: Pleuronectes linguatula L. 



This well-marked genus, an ally of Lepido rhombus and of Arnoglossus 

 contains but a single species — a. rather rare inhabitant of the Mediter- 

 ranean. 



ANALYSIS OF THE SPECIES OF CITHARUS. 



a. Body elongate, with soft flesh and large caducous scales. Mouth very large, 

 oblique; the maxillary 2 iu head; lower jaw projecting; some canine teeth, es- 

 pecially in front of upper jaw ; two or three rather large teeth on vomer; eyes 

 large, close together ; left ventral on the abdominal ridge, a little in advauce of 

 right ; its base scarcely lengthened ; gill-rakers slender, of moderate length, X + 9 ; 

 no foramen in gill septum ; dorsal beginning before the eye on right side; caudal 

 pointed; tins all high, but fragile; head, 3$ in length; depth, 2|; D. about 65; 

 anal, 45 ; lat. 1., 37 ; color, grayish, translucent Linguatula, 27. 



27. CITHARUS LINGUATULA. 



Pleuronectes linguatula LinnaBus, Syst. Nat., ed. x, p. 270, 1758 (after Artedi), and of 

 early authors. 



Citharus linguatula Giinther. Cat. Fish. , iv, 418, 1862. Steindachner, Ichthyol. Berichte 

 1868, Sechste Fortsetzung, p. 51 (Barcelona, Alicante, Cadiz), and of most re- 

 cent authors. 



