17. PLErRONECTES. 441 



the anal. Gill-rakcrs styliform, rather short, widely set. Brownish 

 or blackish, with yellow spots. 



From tho coasts of Erance along all the coasts of Northern Europe. 

 Iceland. 



rt. Half-grown. Bahuslan. Presented by Hr. A. W. Malm. 



b-g. Adult, half-grown, and young: skins and stuffed. Frith of 



Forth. From Dr. Parnell's Collection. 

 h-l:. Very young. Frith of Forth. 

 l-n, 0. Young. Brighton. Presented by Mr. E. Gorrard and by 



J. G. Childi'en, Esq. 

 p. Large specimen. London market. 



q-ij. Adult, half-grown, and young : stuffed and skins. England. 

 z. Twenty-five inches lor 'If : stuffed. 

 a-/3. Half-grown : skins. From Gronow's Collection. 

 y-S. Adult : skeletons. British. 



e. Adult: skeleton. Gemian Ocean. From Dr. A. Giinther's Collection. 

 Skeleton. — The bones of the jaws, the palatine and pterygoid are 

 more developed on the left side than on the right ; the hiatus between 

 articulary and dentary is narrow. The two prefrontals \dt\v the tur- 

 binals are turned round towards the right side, being fixed to that 

 portion of the principal frontal which separates the two orbits from 

 each other ; the occipital crest is very low. Pharyngeal hemes very 

 stout, bearing obtusely conical molar-like teeth, which are arranged 

 in three or four irregular series. The ui'ohyal is horseshoe-like ; 

 one of its branches is fixed by a tendinous filament to the hyoid, the 

 other to the symphysis of the humeri. The pubic bones are very 

 narrow, and attached to the humeral arch by a pair of long styliform 

 processes. The stnicture of the vertebral column is verj- similar to 

 that in lihumhus, but the number of intemeurals and interha^mals 

 is fewer, as frequently only one corresponds to a neural and htemal 

 spine. The length of the fii-st hasmal spine equals that of the twelve 

 first vertebra; ; the anterior interhaemal is exceedingly strong, ter- 

 minating in a polished sjiine anteriorly. 



2. Pleiironectes pseodoflesus. 



riatessa pseudoflesus, Gottsche in Wiegm. Arch. 18.35, p. 143. 

 B. 7. D. 62-G6. A. 46-48. Caec. pyl. 4. 



The height of the body is two-fifths of the total length (with tho 

 caudal), the lengtli of the head two-ninths. Some scales along the 

 lateral line, along the base of the dorsal and anal, on tlie sides of tlic 

 head and of the abdomen are ciliated, the rest and the blind side being 

 entirely smooth. A series of six obtuse bony tubercles runs from tlic 

 eye to the origin of the lateral hne. The latter is slightly curved 

 above the pectoral, the depth of the curve being less than the width of 

 the base of the pectoral. Eyes and snout as in PLplah'ssa. The dorsal 

 commences above the middle of the eye, and terminates at a short 

 distance fi'om the caudal ; tlie rays aliout (lie thirtieth are the longest. 

 A spine before the anal. light-brownish, with yellow spots. (GoUsihe.) 



German Ocean. 



