444 THE ZOOLOGIST. 
After the classification of the Vertebrata, a digest is given of 
their geographical distribution. Then follows an approximate 
number of recent species of vertebrates, giving a total of 24,241 
species. 
There is a concluding and original note which we reproduce. 
“Supposing the fauna of the world was reduced to the 250th 
part of living species, then the Primates would be represented by 
one species only, and this being of course Man, his available 
menagerie would consist of scarcely threescore species, half of 
which would be Teleostean Fishes. The rest would be composed 
of a dozen and a half of Singing-birds; half a dozen each of 
Lizards and Snakes; four Rodents; four non-singing Neotropical 
Passerine Birds; two species each of Woodpeckers, Humming- 
birds, and Bats; one or two each of Parrots, Pigeons, Fowls and 
some other Game-birds, Kingfishers, and Birds of Prey; and 
one species each of a Shark, Frog, Toad and Tree Frog, Gecko, 
Ruminant, and Carnivore.” 
The Trout. By the Marquess oF GrRanBy. With chapters on 
Breeding by Col. F. H. Custance; Cookery by ALEXANDER 
Innes SHanp. Longmans, Green & Co. 
Tue Trout has followed the Salmon as subject-matter for a 
new volume in the Fur, Feather, and (now) Fin Series; and 
although the capture of the fish occupies a large portion of the 
work, its natural history is not altogether neglected. It is indeed 
difficult to read any good book on angling without acquiring 
some knowledge as to the habits of fish; in fact, it is such 
knowledge that makes a successful angler. To many naturalists, 
again, the angler’s description of Trout “ tailing” and “bulging ” 
will prove a most interesting narrative. ‘ Tailing is a per- 
formance frequently witnessed in Hertfordshire and Buckingham- 
shire waters, and in South-county streams generally. As may 
be surmised, the phrase ‘tailing Trout’ means that the fish are 
plunging their heads into the weeds, or poking about on the 
bottom of the river, seeking their food amongst the freshwater 
shrimps, grubs, and similar appetizing morsels; and in com- 
paratively shallow streams this downward operation causes the 
fishes’ tails to appear above the surface of the water.”’ ‘‘ Bulging” 
is the explanation of what to the fisherman will sometimes seem 
