426 PLEtTRONECTID^. 



Society of London. A second specimen, also from Dr. Garden, is 

 perfectly identical with the former ; but Linnaeus, who apparently 

 had rjeceived it at a different period, considered this as belonging to 

 the species figured by Catesby, tab. 27, which he had named PI. lu- 

 natics in the tenth edition of his ' Systema Naturaj.' 



3. Fseudorhombus oblongus. 



Pleuronectes oblongus, Mitch, in Trans. Lit. ^ Phil. Soc. New York, i. 



p. 391. 

 Platessa oblonga, Dekay, New York Fauna, Fish. p. 299. pi. 48. fig. 156. 

 D. 88. A. 66. 

 Eight to ten sharp, stout teeth on each side of the lower jaw ; six 

 to eight similar teeth on each side of the upper jaw, and the remain- 

 ing posterior portion of the jaw filled up with numerous minute teeth. 

 The height of the body is contained twice and a third in the total 

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

 deeply imbedded in the skin; interorhital space flat, scaly, broad, as 

 wide as the snout is long. Lateral line with a subsemicircular curve 

 above the pectoral. Eyes rather small. The dorsal fin commences 

 anteriorly to the upper eye, and its distance from the caudal is less 

 than the depth of the free portion of the tail. Nearly uniform 

 brownish ; sometimes with spots. (DeJcay.) 

 New York. 



According to the figure quoted, this species seems to differ from 

 Ps. dentatus in having a remarkably broad interor"bital space. 



4. Pseudorhombus californicus. 



Hippoglossus californicus, Ayres in Proc. Calif. Acad. 1859, p. 29, and 

 1860, fig. 10. 



D. 70. A. 55. 



Teeth slender, sharp, curved, about thirty in the upper jaw and 

 forty-sis in the lower. The height of the body is one-third of the 

 total length (without caudal), the length of the head one-fifth. The 

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

 lateral line is much less than the length of the head. The distance 

 of the upper eye from the snout is equal to one-fourth of the length 

 of the head, and the width of the interorhital space is one-sixth of 

 the same length. The lateral line makes a strong curve above the 

 pectoral. The length of the maxillary is nearly one-half of that of 

 the head. The dorsal commences a little anteriorly to the upper eye, 

 with its greatest height (which is one-third of the length of the head) 

 at about the middle of its length ; its distance from the caudal equals 

 the depth of the free portion of the tail. Greyish-brown. (Ayres.) 



Bay of San Francisco. 



5. Fseudorhombus arsius. 



Pleuronectes arsius, Ifa77i. Buch. Gang. Fish. p. 128. 

 D. 81. A. 55. 

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



