88 Transactions. — Zoology. 



G. postvectis. — Lower jaw about same length as upper when 



shut, but projects beyond when open. 

 G. robinsonii. — Upper jaw projects beyond lower either closed 



or open. 

 G. fasciatus. — Upper jaw scarcely projects beyond lower. 

 G. kokopu. — The maxillary extends to the vertical from rear 



margin of pupil of eye. 

 G. postvectis. — The maxillary extends to about vertical from 



centre of pupil of eye. 

 G. robinsonii. — The maxillary extends to the vertical from 



middle of eye. 

 G. fasciatns. — The maxillary extends to the vertical from rear 



margin of orbit. 



Galaxias kokopu. 



Body very stout ; head broad and depressed, slightly flat 

 on top. Fins very fleshy and thick, especially the vertical 

 ones, which also have a thick fleshy pad at their feet, hiding 

 the bases of the rays altogether, first three rays of dorsal and 

 anal being completely hidden. Origin of dorsal slightly in 

 advance of that of anal. Anal higher than dorsal. Ventrals 

 and pectorals each longer than height of dorsal, but less than 

 height of anal. Caudal much rounded. Dorsal immediately 

 over vertical from anal orifice. Width of caudal at base 

 equals three long diameters of orbit or width of head at rear 

 of orbit. Eibs thin, long, and needle-like. 



This species has mature ova in November. 



Colour. — The ground-tint of sides, back, and head more 

 or less dark pinkish -brown of beautiful transparent tint 

 when the fish is in good condition and alive, but varying in 

 intensity with the class of water frequented. The belly 

 light pinkish-grey, sometimes with quite a golden or bronzed 

 colour. The whole of the sides, back, cheeks, and base of 

 vertical and tail fins more or less closely spotted and marked 

 with rounded spots, and more or less crescent-shaped, and 

 short shghtly sinuous or small ring-like marks, some quite old 

 Arabic-script-like in character, and in colour hght yellowish- 

 brown or ochre. The spots and marks on the back become 

 much smaller and closer; those on head smaller still, more 

 rounded, and invariably arranged concentrically. The vertical 

 fins and tail are blackish. Pectorals and ventrals lighter. 

 Iris of eye golden, with bluish patches. 



Measurements of 11-05 in. specimen are appended. 



The Westland people generally call this species the 

 " mountain-trout." 



Galaxias postvectis. 



Body is stout, of squarer section than G. kokopu ; head also 

 flattened on top, but not so much depressed. Fins are not 



