17. PLETIIIONECXES. 447 



Limandelle, Duham. ix. c. 1. p. 2(kS. pi. 6. figs. 3 & 4*. Cuvier quotes 

 the latter iu the ■ lieg-nc Animal ' for his Fl. pola, biit says that the 

 lateral line of this species is straight. It remains doubtfiil therefore 

 whether PJ. pola, Ciiv., is to be refen'ed to PJ. Vmcjimtida, Gronov., 

 or to PL ct/nof/Jossus. 



a-h. Half-grown : skins. From Gronow's Collection. — Types of PI. 



Vnujuatula. 

 c. Adult : skin. From Mr. YarreU's Collection. 



Platessa rostratn, 8torer, in Eost. Journ. Nat. Hist. vi. p. 2G8. pi. 8. 

 fig. 2, appears to be allied to PJ. Ihnanda. 



12. Pleuronectes ferrugineus. 



Platessa ferruginea, Storer, Fish. 3Iassach. p. 141. pi. 2 : Dekay, New 

 York Fauna, Fish. p. 297. pi. 48. fig. 155. 



D. 82. A. 61. 



The height of the body is contained twice and a quarter in the 

 total length (without caudal), the length of the head four times. The 

 greatest depth between the anal fin and the straight portion of the 

 lateral line equals the length of the head. Scales ciliated ; lateral 

 line with a strong curve above the pectoral, the depth of the ciu'vc 

 being one-third of its length. Head scaly ; there are about twelve 

 vertical series of scales between the lower eye and the inner margin 

 of the prasoperculum. Snout as long as the eye, the diameter of 

 which is somewhat less than one-fifth of the length of the head. 

 Lower jaw prominent, lips broad, maxillary as long as the eye. 

 Upper jaw with a series of about twenty-five small, closely-set teeth 

 on the blind side, the teeth on the other side being mdimentary. 

 Eyes separated by a very narrow ridge, the lower being slightly in 

 advance of the upper. An indistinct ridge above the operclcs, covered 

 with minute tubercles. The dorsal commences above the anterior 

 third of the eye, and terminates at a short distance from the caudal, 

 that distance being two-thirds of the depth of the tail. The length 

 of the pectoral is contained twice and two-thirds in that of the head. 

 The dorsal rays about the forty-fifth arc the longest, not qiiite half 

 as long as the head. A spine before the anal. Gill-rakers lanceo- 

 late, half as long as the eye. 



Atlantic coasts of the United States. 



a. Adult. Boston. Presented by B. Winstone, Esq. 



13. Pleuronectes microcephalus. 



The Smear-Dab. 



Rhombus Isevis comubiciis, Jar/o in Haj/, Sipt. p. 1G2. fig. 1. 



Smear-Dab, Penn. Brit. Zool iii. p. 202 (not fig. lOG). 



Plem-onectes mierocephnlus, Ihniov. Brit. Fish. ii. pi. 42 ; Turt. Brit. 



Faun. p. 9(3 ; Fries, Vet. Akad. Handi 1838, p. 173, or in Wiegm. Arch. 



1840, p. 24 ; Kiiss. Skand. Faun. iv. p. G09. 



* These figures arc referred by several authors to PL microcephalus, but this 

 has a much flatter curvature of tlic lateral line thau Duiiamcl's Limandelle. 



