Hector. — On Salmon Trout in Nelson Harbour. 



211 



Art. XXVII.— Ow the Occurrence of the Salmon Trout in Nelson Harbour. 



By James Hector, M.D. 



[Bead before the Wellington Philosophical Society, llth September, 18Si:\ 



Salmo trutta, l. Nelson Harbour. 

 Female after spawning. 

 B. 11. D. 13. A. 11. P. 13. V. 9. 

 L.L 



Vert. 58 



120. L. transv. ff ; above V. ^^. 



C(Bc. Pijl. 40 +. 



Inchea. 

 Total length . . , 25 



Greatest depth . . . . . , . . . , . . 5 



Length of head . . . . . . . . . . . . 5 



Least depth of tail . . , . . . . . . . 2 



Distance between end of snout and eye . . . . 1"2 



Length of maxillary bone . . , . . . . . 2 



Distance between eye and angle of opercukim , . 3 



Distance between occiput and origin of dorsal fin . . 7 



End of dorsal to root of caudal . . . . . . . . 7*5 



Length of base of dorsal • . . . . . . . . . 2-8 



Greatest height of dorsal . . . . . . . . 2 



Length of pectoral . . . . . . . . . . 3-6 



Eoot of pectoral to ventral . . . . . . . . 7"4 



Length of ventral • . . . . . . . . . 2-5 



Ventral to anal . . . . . . . . . . . . 5 



Length of anal . , . . . . . . . . • . 3"3 



Greatest depth of anal . . . . . . . . . . 2-9 



Length of longest caudal, say . . • . . . . . 3*2 



„ middle ,, . . 1-9 



Weight, 64 ounces. 



The greatest depth of the body is beneath the middle of the dorsal fin, 



and is equal to the extreme length of the head and one-fifth of the total 



length. The snout is conical, but compressed vertically. Mouth terminal, 



the jaws fitting evenly when shut. Maxillary bone dilated and extending 



slightly beyond the posterior vertical of the eye. Diameter of the eye is 



