2620 Bulletin 47, United States Natioiial Museiun. 



1021. HIPPOGLOSSINA, Steiudacliuer. 



Hippoijlossina, Steindachner, Icbtb. Beitriigo, V, 13, 187(i (viacropg). 



Teeth rather small, luiiserial, uo canines; lateral line with a strong arch 

 in front, and with uo accessory dorsal branch; anal spine obsolete; body 

 inditilerently dextral or sinistral (in some species at least). Scales ctenoid ; 

 dorsal fin beginning above pupil; gill rakers rather long and slender. 

 This genus is intermediate between Hipponlossoidcs and Faralivhthys, 

 agreeing with the former in the insertion of the dorsal and in general 

 appearance, and with tlie latter in the direction of the lateral line. Sev- 

 eral species are now known. Some of them are dextral, aud perhaps all 

 of them are normally so, or perhaps, as in the case of Xj/strcu7-ys liolepis, 

 all are indifferently dextral or sinistral. (A diminutive of Hippoglossus, 

 the halibut.) 



a. Moutli large, the maxillary extending to opposite posterior margin of eye, 2 in head ; 



gill raker.s numerous, 4+13; dorsal rays about 08; anal 53. stomata, 2986. 



aa. Mouth moderate, the maxillary extending to opposite middle of pupil, about 2J in 



head. 



b. Dorsal rays about 66; anal 52; depth of body 2i in length. macrops, 2987. 



bb. Dorsal rays about C2; anal 48; depth of body 2f in length; gill rakers 2 + 8 



or 9. BOLLMANI, 2988. 



2986. HIPPO«LOSSI.\A STOMATA, Eigenmanu & Eigenmann. 



Head2f to 3 in length; depth 2i to 2|. D. 67 to 70; A. 52 to 54; scales 

 80. Sinistral. Eye (not orbit) large, 5 in head; lower orbit slightly in 

 advance of upper; interorbital a narrow ridge. Form, elongate elliptical, 

 the profile depressed over the eye. Mouth large, maxillary extending to 

 Ijosterior margin of eye, as long as or longer than pectoral, 2 in head; 

 lower jaw about If in head. Teeth small, uniserial; auterior uares of 

 each side with long dermal flaps. Scales of left side all ctenoid, those of 

 right side cycloid on anterior half or two-thirds of body; middle third of 

 interorbital naked, anterior and posterior thirds scaled. Gill rakers 4 + 

 13 or 14. Dorsal beginning over middle of eye, anterior rays Avith but 1 

 or 2 scales, rest scaled to near tip, all bnt last 8 rays simple; anal similar 

 to dorsal, with a strong procumbent sjjine; highest dorsal and anal rays 

 about 3i in head; pectoral of colored side about 2 in head, that of blind 

 side shorter; caudal double truncate, 5 to 5^ in length. Brown, strongly 

 tinged in life with robin's-egg blue; numerous sjjots of light blue and 

 light and dark brown; 5 pairs of large, dark-brown ocelli along dorsal 

 and ventral parts of eyed side, the alternate ones longer and more con- 

 spicuous; fins colored like body, profusely mottled with light and dark; 

 sinistral pectoral barred; a dark-brown spot above and below on caudal 

 peduncle just in front of caudal, showing conspicuously on blind side. 

 The eggs are probably pelagic ; they are transparent, and measure 1.2 mm. 

 in diameter; the single oil globule measures O.IG mm. Coast of southern 

 California; 2 specimens obtained in deep water off San Diego, November 

 7, 1889, both females, 1 with ripe eggs. (Eigenmann & Eigenmanu.) 

 ((Jro/<aroj, large mouthed.) 



ITijjjpofjlossina stomata, Eigenmann & Eigenjiann, I'roc. Cal. Ac. Sci. 1890, 22, San Diego. 

 (Coll. C. H. Eigenmanu.) 



