A CONTRIBUTION TO THE ICHTHYLOFY 



189 



lateral line, but the scales are of normal cycloid type; of the 

 posterior part of the lateral line, 1 am unable to detect even the 

 least vestiges. 



This new species evidently seems to be most closely related 

 to Amhassis marianus GIjnth. (Zool. Voy. H. M. S. Challenger, 

 Part VI, Shore Fishes). They agree as to the number of scales 

 in the lateral line and the dimensions of the body, head and 

 fin-spines. Also the coloring seems to have been alike. The 

 lateral line in Günther's species is interrupted as in the present 

 one; in his specimens (38 to 83 mm.), the posterior half thereof 

 is, however, „rather indistinct", in which respect it agrees with 

 my smallest specimens, whereas in my type-specimen it is very 

 well developed. The number of fin-rays is in A. marianus 

 greater than in my species, viz. D. VII, I. 10 — 11; A. Ill, 11. 



Apogonichthys a,prion Richards. 



Localities: Port Darwin (fresh- 

 water), June 1894 . Four specimens, 110 — 80 mm. 

 Glencoe, January 

 1895 Two specimens, 88—84 mm. 



La.tés calcarifer Bloch. 



Localities: Port Darwin (fresh- 

 water), June 1894 . One specimen, 183 mm. 

 Daly River, July 



1894 Three specimens, 310, 165 and 



158 mm. 



Sillago bostockii Cast. 

 Locality: Roebuck Bay . . . Two specimens, 188 and 183 mm. 



Pristîpoma hausta Bloch. 



Locality: Port Darwin, June 



1894 One specimen, 215 mm. 



