FLOUNDERS OF GENUS PARALICHTHYS AND RELATED GENERA 



289 



JoKDAN ami KvERMANN. Bull. V. S. Nat. Miis. 47 (.'il : 2021, 

 189S (N(i. 4114:5 designated a.s type). 



Hipiioi/lo.ixinii xnijrans (Jabman, Mem. XIus. Comp. 

 Znol. 24: 2L'l, 180!) (off tile coast of Colonibia, GO fatli. ; 

 the struftuful tharafters given in original description 

 agree with hnllmani, but color somewhat different; needs 

 further investigation). 



Hiliimi/lox.iiiui holliit'ini Meek and IliMiEnRANi). Field 

 Jlus. Xat. Hist. Chicago (zool. ser.) 15 (3): 97:'., 11128 

 (compiled account). — Nou.man, Monogr. Flatfishes, p. 68, 

 tig. :iti, lli:!4 (reviewed). 



HIPPOGLOSSINA MYSTACIUM 



Diaffnox/.s. — Scales on eyed side ctenoid on body, 

 mostly cycloid on head, bnt many weakly ctenoid 

 scales present ; on blind side ctenoid scales present 

 on posterior part of body, extending on midline 

 to a distance behind arch about equal to half its 

 chord, scales on head and on body anteriorly 

 cycloid. Maxillary with 3 cycloid embedded scales 

 in one row. Scales 52 ; 28 perforate scales in arch. 

 Accessory scales absent. Gill rakers 3 compara- 

 tively long ones on upper limb, with 2 widely 

 spaced and very small ones above; 12 on lower 

 limb. Anal rays 55; dorsal rays 66. Pectoral 

 rays 11 on eyed side, 10 on blind side. Origin of 

 dorsal nearly over middle of eye. Anterior teeth 

 but slightly enlarged. Maxillary extending to a 

 vertical through posterior margin of pupil. Eye 

 notably large: body rather slender: head and 

 maxillary short, the maxillary conspicuously nar- 

 row distally. Sinistral. 



Co/or. — Netirly faded; traces of 6 spots in 2 

 lengthwise rows present, as in other species of the 

 subgenus, somewhat nearer to upper and lower 

 profiles than to straight part of lateral line; everv 

 spot in either row plticed on a transverse line with 

 its fellow in the other row, first pair of spots on a 

 transverse line through about middle of arch in 

 lateral line, second pair on a vertical somewhat 

 nearer to head than to base of caudal, third pair 

 not far from ends of dorsal and anal fins ; traces 

 of smaller spots on caudal peduncle, near upj^er 

 and lower posterior angles, at base of caudal lays, 

 these two spots being continued to a slight extent 

 on blind side. 



Sperim^n examined and f/eographic d/'sfr/'hn- 

 tion. — The above account is based on the type 

 specimen (77393) 183 mm., taken near 

 Taita Peninsula, Chile; Albatross Station 2787, 

 46°-17'30" S, 75°15' W: in 61 fathoms. The two 



98033.1 -—52 4 



specimens examined by Giiiither and by Norman 

 (see synonymy) extend the range of this species 

 to the Straits of Magellan. 



Distbtctive characters and reJatioiixhip. — In 

 the number of gill rakers and dorsal and anal rays, 

 (he single specimen studied is more like sfamata 

 than hollmaxi. The extent of ctenoid scales on 

 the blind .side is less than in most specimens of 

 stoniuta, but some individuals of the latter species 

 approach myKtacium closely. The ctenoid scales 

 on the eyed side of the head are fewer, and in gen- 

 ei-al, the ctenoid character of the scales is weaker 

 than in stomata, but there is considerable variation 

 in those respects in the latter species, A .striking 

 difference shown by the type specimen which at- 

 tracts immediate attention is the narrow maxil- 

 lary. This species also has a shorter head and 

 ma.xillary than stomata (table 7). It further 

 differs from stomata in having fewer scales on the 

 maxillary, which are cycloid instead of ctenoid. 



This species is ajiparently more remotely related 

 to hoUmani. It differs from the latter which oc- 

 curs nearer to its range, in having more nmneroiis 

 gill rakers and dorsal and anal rays and in the 

 ctenoid scales not extending so far forward. It 

 agrees with hollmani in having cA'cloid scales on 

 the maxillary. In the number of scales on the 

 maxillary, the length and width of the maxillary 

 and the length of the heatl, nnjstachim will most 

 probably be found to intergrade with f>oIh)Mni. 



As compared with the original description of 

 macrops, this species differs in having a more 

 slender body, a shorter head, and the ctenoid 

 scales on the blind side evidently extend more 

 forward. 



niltjiof/Iossina macropx Gi'nther, Proe. Zool. .Soc. Lon- 

 don 1881: 21 (Trinidad Cliannel, listed). — Thompson. 

 Proc. U. S. Nat. Mus. 50: 424. 1916 (specimen from off 

 Taita Peninsula forming tyije of nuistnriiiiii) . — Norman, 

 Monogr. Flatlishes, p. 67. 19:^4 (account lia.sed on spec- 

 imens recorded by Uiintber). 



HilJI)0{/lox.*iii(i miistiii-him (Jinsmiko, .lour. Washington 

 Acad. Sci. 26: 130, fig. 1, 19:^6 (based on specimen recorded 

 by Thompson). — Norman, Disc. Kep. 16: 132, 1937 (iden- 

 tification of specimens from Trinidad Channel corrected). 



HIPPOGLOSSINA STOMATA 



(I'l.ATIC 2) 



Diagnosis. — Eyed side having nearly all scales 

 on body ctenoid, those on head variable, usually 

 nearly all ctenoid, sometimes the majority cycloid, 

 but some ctenoid scales always present; on blind 



