129 



was confined to New Zealand ; it appears, however, to be 

 common to Australia and Tasmania. These little fishes are 

 much esteemed as food for the breakfast table. 



113. Salmo salar, L. (I.) The English Salmon** 



B. 11-12. D. 14. A. 11. P. 14. V. 9. L. lat. 120. L. tr. 

 22 - 26 : 19 - 22. Vert. 59 - 60. Ceec. pyl. 53 - 77. 



GUnth. Cat., VI., p. 13. Allport, Report Roy. Soc. Tas., 

 Proc. 1866. 



Shipment of ova arrived successfully by the Norfolk^ which 

 was safely delivered at the Salmon Ponds, Tasmania, on 

 21st April, 1864. Of this shipment at least about 500 fishes 

 were successfully hatched and liberated in the Plenty. Some 

 were retained in the Ponds for breeding purposes. The 

 doubt whether the true S. salar has established itself in 

 our waters is not yet set at rest, for no fish over 10 lbs. of 

 a migratory form has yet been caught in the Derwent 

 after the lapse of 18 years. The migratory type now 

 successfully established seems to partake of a character 

 intermediate between S, trutta^ S. Camhricus^ and ,S. salar. 

 Many specimens examined by me, caught in the Derwent, 

 agree with the grilse form of *S'. salar in nearly every 

 characteristic, saving the relative length of maxillary bone 

 as compared with snout. The snout is invariably some- 

 what obtuse, as in S. trutta^ although in all other respects 

 many individuals agree more closely with its noble con- 

 gener, S. salar, than with the other two mentioned species. 

 (See Gen. Obs.) 



114. Salmo trutta, Flem. (I.) English Sea Trout or Salmon 



Trout.** 



B. 11. D. 13. A. 11. P. 15. V. 9. L. lat. 120. L. tr. 

 24 - 26 : 36 - 34. Vert. 59 - 60. Csec. pylor. 49-61, rarely 

 less. 



Giinth. Cat., VI., p. 24 ; Allport's Report, Proc. Roy. Soc. 

 Tas., 1866. 



Ova introduced successfully by the Lincolnshire in the year 

 1866. As already pointed out with reference to S. salar, 

 it is difficult to say whether the form resembling the above 

 species, now abundant in the Derwent, is, properly speak- 

 ing, S. trutta or not. It is in many respects more allied to 

 S. Cambricus. 



The following are the average limits of the common 

 form :— B. 10 - 12. D. 13-14. A. 11 - 12. P. 14. V. 9. 

 L. lat. 120. Csec. pylor. 42 - 67. Maxillary, relative to 

 snout, longer and thin ; transverse series of scales from 

 adipose fin forward to lateral fine, 12 - 14 ; depth of 

 operculum relative to length, 1^ to 1| ; hind part of 

 body moderately elongate ; vomerine teeth disappearing 

 in specimens from 3 to 5 lbs. weight ; caudal fin invariably 

 emarginate in full grown specimens ; colour ut^ually bluish- 

 black on back and shoulders, silvery on sides ; paiT 

 markings, 11 to 12 bars, frequently seen in smolt stage. 



Whether this local form is the result of hybridism, as 

 suggested by Dr. Giinther, or is simply the effects of the 

 differing conditions of a new environment, I am as yet 



