SALMON TRIBE. 5 o 5 
into a shallow notch of which it is fitted. As a representative of this latter group we 
take the pigmy marane ( C. ctlbulci) of Northern Europe, shown in the upper figure 
of the illustration. Pollan, which grow to a length of about 6 inches, are largely 
sold in Belfast during the spawning-season, at which time they come up from the 
deep waters of Lough Neagh to the shallows. At times they occur in enormous 
numbers, upwaids of seventeen thousand having been taken on one occasion in the 
early part of this century. 
PIGMY MARANE AND MARANE (A liat. size). 
Grayling The ^he sa l mono i^ s that we have space to notice are the 
grayling, of which the European species (Thymallus vulgaris) is shown 
in the upper figure of the illustration on p. 501. Nearly allied to the coregonoids, 
the grayling are readily distinguished by the greater height and length of the 
dorsal fin, which includes from thirteen to twenty-three rays. The cleft of the 
mouth is also smaller, and the maxilla of small size. Small teeth are present 
in the jawbones, as well as on the palatines and the head of the vomer, but they 
are wanting on the tongue. The blind appendages of the intestine are less 
numerous than in either the salmon or the coregonoids, and the air-bladder is 
unusually large. The range of the genus includes a large portion of Europe, 
Northern Asia, and the colder regions of North America. The common species is 
found locally over a great part of Europe, ranging from Lapland to Venice, and 
from England to Russia. It is, however, unknown in Ireland, and has only been 
introduced of late years into Scotland; while in England it is most abundant in 
the rivers flowing from the limestone Pennine chain in the north, and the Red 
