PISHES WAITE. 191 



backwards and not isolated spots as shown. The white spots on 

 the head-parts, present only in some examples, are raised tubercles. 

 Each supra-orbital tentacle consists of a median tapering stem, 

 whence arises a number of lateral filaments, which are larger and 

 more numerous on the inner side. The nasal tentacles each 

 comprise a short stalk and a palm like portion terminating in 

 7-9 digitations. The occipital tentacles are simple. The short 

 streak behind the eye, which Giinther remarks is characteristic 

 of the species is, in formol-preserved examples, of a deep blue 

 colour. 



SALARIAS QUADRICORNIS, Cuv. & Vol. 



Salarias quadricornis, Cuv. & Val., Hist. Nat., xi., p. 329, 

 pi. cccxxix. ; Giinther, Fische der Sudsee, p. 209, pi. cxvii., 

 fig- b. 



The collection contains several examples, all small, however, 

 as the largest one measures only 77 millim. This species was 

 exceedingly common, swarming in every rock pool, as indeed one 

 might imagine by the fact of the natives having designated 

 ("Monaco") a fish not edible nor otherwise useful. When 

 removed from the pools it skipped over the rocks in such a 

 manner as to induce the belief that it was a Periopthalmus. 



MYXUS, Giinther. 

 MYXUS LEUCISCDS, Giinther. 



Myxus leuciscus, Giinther, Proc. Zool. Soc., 1871, p. 666, pi. Ixv., 

 fig. a ; Fische der Sudsee, p. 220, pi. cxxi., fig. c. 



The only grey mullet collected is assigned to this species. In 

 the " Fische der Sudsee " the length of the head is misprinted 

 as of the total length. It should read , as in the original 

 description. 



The native name is " Foua." 



GLYPHIDODONTID^E. 



TETRADRACHMUM, Cantor. 



TETRADRACHMUM ARUANUM, Block. 



Tetradrachmum aruanum, Bloch., sp., Fisch., iii., p. 62, 

 pi. cxcviii., fig. 2 ; Bennett, Fishes of Ceylon, p. 17, 

 pi. xvii. 

 Represented by one small specimen of only 32 millim. in length. 



Common throughout the South Seas. 



