272 BULLETIN OF THE BUREAU OF FISHERIES. 



Family GERRID£. 

 XYSTiEMA Jordan & Evermann. 



729. Xystsema gig-as (Giinther). Main loa. Samoa; Fiji; Tonga. 



Gerres gigas Giinther, Cat., iv, 262, Tonga. Giinther, Fische der Siidsee, 30, taf xxiv, fig. a, Tonga, Fiji, Samoa 

 Life colors of a specimen from Apia called main loa, silvery with faint dark shades; no bright 



colors; caudal pale edged; first dorsal elevated, its edge dusky. 



One large specimen and one very small one taken at Apia. Apparently this species is distinct 



from X. oblongum (Cuvier & Valenciennes) of India, with which Day unites it. X. oblongum is still 



more elongate. 



730. Xystaema argyreum (Forster). Matu. Samoa; Tahiti; Waigiu; Strong I.; Tanna; Aus- 



tralia; East Indies. 

 {Gerres waigiensis Quoy & Gaimard. ) 

 Compared with X. argyreum, X. gigas is less silvery, and has more distinct streaks along the rows 

 of scales. In X. gigas the snout is longer than eye; the body is more elongate, and the head propor- 

 tionately longer. 



This species is more common at Samoa than X. gigas, but seems to reach a rather smaller size. 

 We have 8 examples of different sizes from Apia and Pago Pago. Life colors of an example from 

 Apia, silvery, without dark streaks; ventral and anal light yellow; other fins scarcely yellowish; edge 

 of spinous dorsal dusky. 



731. Xystasma abbreviatum (Bleeker). New Guinea (Ramsay & Ogilby); East Indies. 



This can not be Spams erythrourus of Bloch, w : hich is a species of Xystsema, said to be from Japan. 

 Bloch's type is more elongate, the depth being 3A inches, the total length 10J inches in the type in the 

 Museum of Berlin. 



732. Xystsema macrosoma (Bleeker). Samoa (Kner, Sitz. Ak. Wiss. Wien 1868, 9, Savaii); 



Admiralty Is. (Gunther) ; East Indies. 

 This species, recorded by Kner from Samoa, was not seen by us. 



733. Xystaema punctatum (Cuvier & Valenciennes). Vanicolo; New Britain and New Hanover 



(Peters); East Indies. 

 (Gerres JUamentosus Cuvier & Valenciennes, adult.) 

 Valenciennes describes Gerres jyanclatus as having the depth 3 J in the total length with caudal. 

 This is true of the very young only (2J inches long). In the adult it is 3 or a little less. Gerres punc- 

 tatus is, however, evidently the same as G. filamentosus, and the name occurs on an earlier page of the 

 same work. 



734. Xystaema acinaces (Bleeker). New Guinea (Macleay); East Indies. 



735. Xystaema poeti (Cuvier & Valenciennes). Milne Bay, New Guinea (Macleay) ; East Indies. 



736. Xystasma macracanthum (Bleeker). New Guinea (Macleay); East Indies. 



UL.EMA Jordan & Evermann. 



737. Ulaema bispinosum (Alleyne & Macleay). New Guinea. 



Gerres iispinosus Alleyne & Macleay, Proc. Linn. Soc. N. S. W. 1876, 273, Hall Sound. Anal rays n, S. 



Family EQUULIDvE. 



EQ.UTTLA Cuvier. 



Equula Cuvier, Regne Anirn.,> ed. 1, vol. n, 323, 1817 {insidiator). 

 Deveximenlum Fowler, Journ. Ac. Nat. Sci. Phila. 1904, 517 (insidiator). 



738. Equula insidiator (Bloch). Tahiti (Kner) ; East Indies. 



This species is separated by Fowler from Leiognalhvs as the type of a distinct genus Deveximenlum, 

 characterized by the vertical mouth. But the same species is the original type of the genus Equula, 

 which has been regarded as a synonym of Leiognathus. 



