84 Transactions. — Zoology. 



the back. These, when the water improves, eat then* way 

 bodily out through the exterior. 



Kokopu feeds a great deal on the fresh-water lobster, and 

 has many of the habits of the Home trout — inhabiting the 

 deeper streams, lying close to the surface at times, sometimes 

 sheltering under a patch of foam at the foot of a miniature 

 cascade or fall, and rising to the surface in the evening and 

 taking the flies or moths. 



The third Westland species I enlarge upon, more frequently 

 inhabits the sluggish and muddy- bottomed creeks, but is also 

 found in company with G. kokopu in the gravel-bottomed and 

 some of the rocky creeks. In its proportions it somewhat 

 approximates to the description of fasciatus, though it grows 

 much larger, but seldom beyond 10 in. in length. It is not as 

 hardy in the aquarium as G. kokojni, and has generally the 

 same feeding habits, except that it does not take a surface- 

 bait as well. Strange to say, it is seldom, if ever, troubled 

 with the flesh- worms before mentioned. I have distinguished 

 this one with the specific name of postvectis, on account of its 

 peculiar and constant marking. 



Order PHYSOSTOMI. 



Family Galaxid^. 



Genus Galaxias. 



Galaxias kokopu ... 

 „ postvectis 

 „ rohinsonii 

 „ fasciatus 



Galaxias kokopu 

 „ postvectis 

 „ rohinsonii 

 „ fasciatus 



G. kokopu (larger fish). — Length without caudal = 3^ that of 



head (with caudal, 4A). 

 G. kokopu (smaller fish). — Length without caudal = 3f that 



of head (with caudal, 4i). 

 G. postvectis. — Length without caudal = 4 that of head (with 



caudal, 4|). 

 G. rohinsonii. — Length without caudal = 5f that of head 



(with caudal, 5f). 

 G. fasciatus. — Length without caudal = 4f that of head 



(with caudal, 5^). 



