Artaur.—On the Brown Trout introduced into Otago. 511 
8. Neither is there any real variation in the pyloric ceca, excepting in 
the range of numbers; if my explanations given above are borne out by 
future research. 
The numbers of our trout are increasing in such good breeding waters 
as the Shag, Kaihiku, and Waiwera Rivers, but they are not so heavy by 
a great deal as in former years. Poaching and fishing are no doubt largely 
the cause of this; but some other rivers show a diminution in the numbers, 
with a rise in the average weight of the trout caught. -Bad spawning and 
plundering of shags are no doubt the prime causes. 
APPENDIX. 
Table of numbers of Scales, Pyloric Caca, and Vertebra of Otago Trout, 1888. 
SCALES. | 
Wght. Py- | Ver- 
LOCALITY. SEX. Alice lorie| te- REMARKS, 
I. on Teto llas Lift LIO |n 
ral line. 
Kakanui River ..| F | 8 .. | 124| 65 | 49 | 58 | Caught by Mr. 8. Lowe. 
Shag River dI IUE BH DIPL La 
i iM] 48| 15 | 124 .. | .. | +. | Sent by Mr. J. Muir. 
35 Mag ARR We g! Da 117| 48 | 36 | 54 
» se | F [1:14 17 | 120) 60 | 45 | 57 
1 RT E ee .. | .. | 40 | 53?, Large ceca. 
Waikouaiti River..| F |14 17 
Water of Leith ..| F | 6 15 ss | 60 | 64 
Lee Stream a hoe 15 
1» ee y 1:13 oe oe oe 33 59 
A I a ae 16 
d EIOS ITI TS 
sis E F | 4:8 14 I MAD E 
ih x 481 1017 peal scr ME DO 
” .. 4 y 48 17 ee .. 
è pipe Pe Lig 6 L'E a Luke: 
su so DE Oe i da 59 
” cot MOI RIA .. 1191 55 | 44 | 59 
Deep Stream  .. = = Ct ie ease aa 
oe 3" .. * .. 
Tokomairiro River | F | 7:4 | .. | 121| 53 | 61 | 59 | Very short and thin ceca. 
Waiwera River 7 | 2-18) 16 | 128) 66 
IDE 4:65 Mol a dose BO 
Waipahi River ..| Mj 42| 17 !..|..{..|.. | Sent by Captain Fullarton. 
x SIMI 1a 3 A 
” oe ] I 58 14 ee oe oe ” ” 
» ..4IM| 810 16 | .. | ..] -. | -. | Caught by Mr. Bull. 
” oe y 18 .. .. 39 
si ae 7 | 6-13) 18 | 120) 55 50 
” oe E y 3:24 ee oe oe 54 
me sel M| 48| 16 | 120) 60 | 55 | 58 
2 MITTIT. Di... 
Kuriwao River ..| F | 1129 14 |..|..|46 : 
Kaihiku Riv I F | BB] .. |.-|..|46| .. | Large ceca, j to 24 inches. 
Wakatipu Lake ..| M |11 .. 1117153147 | .. | (Bent by Mr. TOP 
a col M riU is ls [Dis Large ceca 
» oo | M113 ibid FEE ii D and ido x "s 
” .. 3 ] I 9:4 .. .. .. ee 
