70 GALAXIAS FROM MOUNT KOSCIUSKO, 



1882. iveedoni, Johnston, I.e.; Mersey River, Tasmania. 



1882. atkinsoni, Johnston, I.e.; Pieman River, Tasmania. 



1886. kayi, Ramsay and Ogilby, Proc. Linn. Soc. N. 8. Wales (2) 

 i. p. 6; Fifth Creek, Adelaide, South Australia. 



1888. iadicus, Day, Fish. Ind. Suppl. p. 80G, fig.; Littoral 

 districts of Bengal and Madras. 



1892. nigothoruk, Lueas, Proe. Roy. Hoc. Vic. (2) iv. p. 28; Lake 

 Nigothoruk, Gippsland, Victoria 



1894. C'lpo-nais, Steindachner, Ichth. Beitr. (xvii.) p. 18; Lorenz 

 River, South Africa. 



There can be little doubt that man}^ of the species, 32 in num- 

 ber, here catalogued are merely nominal, but, though detailed 

 descriptions of each would doubtless prove of great assistance in 

 indicating the various degrees of affinity which connect the local 

 forms with their antarctic progenitors, it is plainly impossible to 

 even approximately delimitate the species in a satisfactory manner, 

 until a full series of each variety or subspecies shall have been 

 brought together for examination. The local variations in the 

 same form inhabiting the same little subalpine runlets is shown 

 to be so great, as is manifest by the study of the present species, 

 that the wonder is, not that so many nominal species have been 

 created, but that there are not infinitely more. 



This perplexing number of local varieties finds its analogue in 

 the common Brook Trout of the North of Ireland,* where every 

 angler is well aware that the Trout from each stream differ so 

 wreatly in outward appearance from those inliabiting the next, 



* I only mention this locality because it was there that I observed the 

 local ilifterences iii Salmo fario, but no doubt sportsmen from other districts 

 can testify to the accuracy of the above remarks. Salmon also vary much 

 in dilierent rivers, and even when taken in nets set in the sea many miles 

 from the mouths of the rivers in which they spawn, the individuals belong- 

 ing to each water way can be unhesitatingly selected {ride Ogilby, Proc 

 Roy. Dublin Soc. 1S85, p. 526). 



