16 FISH GALLERY. 



from Cormemara is shown, 993, is the fish described by some 

 authorities as Salmo gallivensis ; it is a robust fish of estuarine 

 habit. Another Irish Trout is 998, a fish from Lough Arrow in 

 Sligo. The Sea Trout is represented by an 8^1b. fish caught in 

 the sea at Montrose, a 7 lb. fish caught in the Tay at Perth, and 

 a Smolt from the Tay, caught in May. 



If the colouring of the body be disregarded, the British species of 

 Salmo may be reduced to three, namely, Salmo salar, the Salmon 

 and its varieties, Salmo trutta, including all the Trouts, such as 

 Salmon Trout, Bull Trout, Great Lake Trout and Brook Trout, and 

 Salmo alpinus, including all the Charrs. At the time of writing 

 the Charr is represented in Cabinet-case 43 by three specimens, 

 from Buttermere, Windermere and Loch Scourie respectively. 

 Deep-sea Deep-sea Fishes (see Cabinet-case 44) are not fishes of any 

 particular order, but are fishes of genera belonging to numerous 

 families more or less unrelated which have a deep-sea habit, the 

 other members of the families being surface forms or coast foi*ms. 

 The proportions of the deep-sea genera to the others varies in 

 different families. The families Alepocephalida; (Wall-case 7),. 

 Stomiatidse (Wall-case 7), Scopelidse (Wall-case 10), Halosauridae 

 (Wall-case 10), Macruridae (Wall-Case 11), Ceratiidae (Wall- 

 case 20) consist almost entirely of deep-sea forms, whereas among 

 the Eels (Wall-case 8) and Gadidse (Wall-case 11) a moderate 

 proportion of the genera occur in deep water, and in the Salmonidsa 

 only a very few, such as the Argentine (295, W'all-case 7). 



While the animals that live in shallow seas near the coast — 

 animals such as fishes, crustaceans, molluscs, worms and jelly- 

 fishes — exhibit considerable differences in different parts of the 

 world, this is not the case with the animals wmich inhabit the 

 deeper parts of the sea. The species of deep-sea fishes and other 

 animals which are at all well known have a wide distribution. 



Bemoved from the glare of the sun, the fishes of the deep seas 

 have become modified in relation with the subdued light in various 

 directions. Most have exceptionally large eyes (e. g. Aphanopus, 

 982, Cabinet-case 44), so as to bring to a focus as much as possible 

 of the faint light that succeeds in penetrating to the great depths ; 

 a few have eyes which have undergone so much reduction that the 

 fishes are blind, and rely for the capture of their food upon the 



