388 
hands of modern entomologists in the 
matter of scientific names. By Linneeus 
the common kind was called Papilio 
machaon, and the scarce species P. poda- 
lirius; and it is satisfactory to find that 
Prof. Hulme (following the lead of Dr. D. 
Sharp, in the Cambridge Natural History) 
is content to let them retain these well- 
known names. Not so a writer in another 
work (The Concise Natural History) issued 
by the publishers of this journal, who 
terms the one Hquwes machaon and the 
other H. podaliriws, at the same time 
changing the family name Papilionide to 
Hquwtide. But this is not all, for in a 
later work (for which Messrs. Hutchinson 
are not responsible) Mr. Kirby, the aforesaid 
writer, calls the one Achivus machaon and the 
other Iphiclides podalirius. 
are still unsuspecting people in the world 
who innocently ask for the scientific name 
of an animal. “No wonder the editor of 
“Taving Animals” cried “a plague on your 
so-called scientific nomenclature,’ and said 
that he would have none of it! 
Ry 
NEST OF 
And yet there. 
Animal Life 
Iv is hardly necessary to mention here that 
the Willow-Wren is _ not, 
properly speaking, a wren at 
all, but one of the small Leaf- 
Warblers, scientifically known as Phylloscopus 
trochilus; for it is one of the commonest of 
our summer migrants, found everywhere 
where trees grow, whether in the lonely 
moorland valley or in the smoky suburbs of 
a large manufacture town. Its slender 
graceful form and olive-green and yellow 
plumage make it a pretty bird, and its habits 
present .several points of interest. The 
position of the nest on the ground, as shown 
in the illustration, is one of these, for the 
bird itself is essentially a percher, and seldom 
comes to earth except when nesting; this 
habit of building low bemg usual among 
the leaf-warblers. Another remarkable thing 
about this delicate-looking bird is the great 
distance it traverses on its migrations, for 1m 
spring it reaches the northern extremity of 
the continent of Hurope, and in winter goes 
to the extreme south of Africa, thus crossing 
nearly half the globe. 
Young 
Willow=Wrens. 
YOUNG WILLOW-WRENS. 
