284 Transaetions.—Zoology, 
The following two specimens described are the stuffed ones in the Otago 
Museum already referred to under the heading Distribution and Growth of 
Trout, and the natural colours of which cannot now be given. 
i.—Male trout taken in Shag River, June, 1874. Present colour brown 
on back and dark grey on sides; head large; mandible terminating in very 
long hook ; tail square; black spots numerous. 
Dimensions: Weight, l4lbs.; length, 29%in.; depth, 7in.; head, Tin. 
Fin Rays: D.10, P.18, V.9, A.10, 0.19. 
Scales: 15 in transverse row from adipose fin back to lateral line. 
j.—Female trout, taken in Shag River, July, 1874. Present colour brown 
on back and dark grey on sides; head short and blunt; tail square; black 
spots plentiful but not numerous. 
Dimensions : Weight, 164lbs. ; length, 294in. ; depth, 62 in. ; head, 5}in. ; 
Fin Rays: D.11, P.18, V.9, A.10, C.19. Scales: 16 in transverse row 
from adipose fin backwards to lateral line. 
Collecting now the results together of my examination of the various 
specimens above detailed, I find, that as regards the colour and spots, 
these vary in the different rivers from which the respective individuals 
were taken. The Shag River fish are all silvery, and, as a rule, have 
numerous black spots, red spots awanting or rare. The other trout, furthest 
removed in appearance from these, are those of the Lee and Deep Streams, 
which are golden on the sides; in the males black spots numerous; the 
females are mostly silvery, the spots being less plentiful, and both have red 
spots, the male most. The fin rays vary more or less; they are in the 
specimens examined by me dorsal, 10 to 18; pectoral, 12 to 14; V. 9 to 
10, A.10 to 12, C.19. Of these, the most constant is the caudal fin, which 
never seems to vary from 19. Intwo specimens where I found more than 
this number, I am inclined to think I must have made a mistake in 
counting them. Next in invariability are the ventrals; seven individuals I 
found had each 9 rays in these fins, and only one had 10. The anal fin 
rays are tolerably constant, but the pectoral and dorsal fins vary a good 
deal. 
The scales I found, reckoning from the adipose fin backwards to the 
lateral line, to range from 14 to 17, and the pyloric ceca from 48 to 54.* 
Now, if we compare these results with the numbers given by three 
authorities, Günther, Hamilton, and Yarrell, we find they give the 
following :—D.13 to 14, P.14., V.9., A.11 to 12, C.19, scales 15, and 
pyloric ceca, 83 to 46. That is, with the exception of the ventral and 
caudal fins, a higher number of fin rays than I find; scales fewer in a 
* The head of vomer carries 2 to 4 teeth, and body of vomer teeth allthe way. 
 Palatines, tongue, and mandible all armed with teeth, 
