100 PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 



rays arose ui)oii the blind side. In the same individual, no anal spine 

 was diseoverable outside of the skin ; and the rays of the pectoral on the 

 blind side were only ten, and on the colored side twelve. 



In No. 5, no scales were discoverable on the vertical fins. One indi- 

 vidual examined had three tubercles in a vertical line along the poste- 

 rior margin of the ui)per eye. 



PAEOPHRYS Girard. 



Eyes and color on the right side. Form elongate-rhombic ; anterior 

 l)art of head narrow; snout conic. Eyes contiguous, nearly even, the 

 upper looking obliquely upwards. Nostrils on horizon of superior mar- 

 gin of each orbit, anterior subtubular, posterior with anterior llap. 

 Mouth unequal, little oblique ; maxillary bones of colored side extending 

 little beyond anterior margin of orbit, much shorter than that of blind 

 side. Lii5S rather thin and simple. Teeth most developed on the blind 

 side, in a single series, contiguous. An accessory lateral line. Lateral 

 line Avith a very slight arch, almost straight, but somewhat raised in 

 front. Scales cycloid, those on the cheeks similar. A recumbent spine 

 before the anal. Caudal almost straight on posterior margin. Brau- 

 chiostegals seven. Lower i)haryngeals with a double row of teeth. 



Parophrys vetuli s Girard. 



Parophri/s huhhardi Gill. 

 Pleuronectcs dif/rammi^n GUiither. 

 Parophrys vetiihis Gill. 

 Parojiltrys rcfiihis Giiutlicr. 



D. 74-86. A. 54-08. C. 3-0-1-5-3=18. P. 1-11. V. 6. 



Body elongated, tapering posteriorly, less so anteriorly; the gTeatest 

 width about a tliird of the total length; head one-fourth of the same, or 

 rather less. Peduncle of tail rather slender, rather more than one-fifth 

 of the greatest width. Outlines of posterior portion of body ouly very 

 slightly curved ; snout about -g of length of eye, narrow, its convexity 

 meeting that of the anterior part of the dorsal outline above the centre 

 of the pupil of the upper eye. Ej^es from rather less to rather more than 

 ^ of the length of the head, elliptical, the lower in advance of the upper 

 by a distance equal to about g of the dej^th of the pupil ; upper eye 

 almost on a plane with the dorsal outline. Interocular space narrow, 

 ridge-like, elevated, the ridge continued backwards and obliquely up- 

 wards round the posterior border of the upper eye, and then to the 

 lateral Une above the opercle. A short raised ridge along the anterior 

 margin of the lower orbit. Nostrils of both sides in a slight depression ; 

 anterior of right side tubular, that of left side with a posterior lin- 

 guiform flap. Moutli small, its cleft much longer on the blind side than 

 on the colored ; maxillary of the colored side scarcely passing the front 

 margin of the orbit; mandible projecting in the closed mouth, its tip 



