438 PLEURONECTlDiE. 



y. Scales of moderate size and not deciduous. 

 13. Rhomboidichthys mogkii. 

 Rhombus mogkii, Bleek. Celebes, v. p. 256. 



D. 78-82. A. 58-62. L. lat. 52. 



The height of the body is one-half of the total length (without 

 caudal), the length of the head one-fourth. Scales of moderate size, 

 ctenoid, not deciduous. Interorbital space scaly, narrow, concave 

 (its width being one-third of that of the orbit in a specimen five 

 inches long). Mouth of moderate width, the length of the maxillaiy 

 being one-third of that of the head. No prominent knobs on the 

 snout. Teeth of the upper jaw in a double series ; all are very 

 smaU, but some of the front teeth are slightly enlarged. The dorsal 

 commences anteriorly on the snout, and terminates immediately 

 before the root of the caudal. Gill-rakers slender, half as long as 

 the eye. Brownish, minutely dotted with dark-brown. 



Bali, Celebes, Ternate, and Amboyna. 



a. Fine specimen. From Dr. P. v. Blocker's Collection. 



Although in this species the interorbital space is narrower than in 

 its congeners, we do not hesitate to refer it to the present genus, 

 with which it agTces in its dentition and in the concavity of the 

 interorbital space. 



Ehomhus eocosensis, Bleek. Kokos, iii. p. 179, is kno^vn from a 

 single specimen only ; it is not evident from Bleeker's description 

 whether this species ought to be referred to the present genus, and 

 placed near to lih. moylcii, or to Pseudorlioinbiis. 



17. PLEURONECTES *. 



Pleuronectes, sp., Artedi. 



Platessa, Cuv. Itk/iie Anim. 



Platessa, Linianda, Microstomus, et Glyptocephalus, Gottsche, in 



Wiegm. Arch. 18.35. 

 Platichthys, Girard, in Proc. Acad. Nat. Sc. Philad. 1856, p. 136. 

 Clidoderma, Pleuronectes, Limanda, Pseudopleuronectes, Brachypro- 



sopon, et Glj^tocephalus, Bleek. in Compt. Rend. Acad. Sc, Amsterd. 



xiii. 1862, Fleuron. 



Cleft of the mouth narrow, with the dentition much more developed 

 on the blind side than on the coloured. Teeth in a single or double 

 series, of moderate size ; palatine and vomerine teeth none. The 

 dorsal fin commences above the eye. Scales very small, or rudi- 

 mentary, or entirely absent. Eyes generally on the right side. 



Temperate and Arctic Seas of both the northern hemispheres. 



If we were to attribute to some of the characters the same (generic) 



* 1. Pleuronectes glacialis, Pall. Itin. iii. App. p. 706, and Zoogr. 'Ross.-As.m. 

 p. 424. — Mouth of the River Obi. (Dentition unknown.) 

 2. cicatrieosus, Tall. Zoogr. Ross.-Aa. iii. p. 424.— Kamtschalka. (Den- 

 tition insufHcientlj described.) 



