242 
pelago is entirely formed of volcanic rocks; a 
few fragments of granite curiously glazed and 
altered by the heat, can hardly be considered 
as an exception.” Mr. Walter Rothschild 
gave me special facilities for getting photo- 
graphs of these extraordinary lizards, and I 
am sure he will excuse my quoting a portion 
of one of his letters to me on the subject 
of these reptiles, his great authority being 
universally acknowledged: “ The Iguanas are 
Conolophus subcristatus, sub-species pictus, 
described by myself in a footnote in my 
article on the Galapagos in Vol. 6 of the 
‘Novitates Zoologicae, and subsequent vol- 
umes. They are entirely terrestrial as 
opposed to 
the famous 
Marine igu- 
anas (Am- 
blyrhynchus 
cristatus) of 
the Galapa- 
gos, and live 
in subter- 
ranean bur- 
rows. Their 
food consists 
of cactus 
shoots and 
fruit entirely, 
and they were 
brought by 
Mr. R. 4H. 
Beck, on his 
last voyage, 
having had 
them on board the vessel for nine months 
before reaching San Francisco.” 
“ce RTTNT 
We 
A vERY healthy male specimen of Bennett’s 
Tree Kangaroo has lately been 
added to the menagerie at the 
Zoo. During the repairs to 
“Mickie’s” old quarters (the sloths’ house) 
this animal was caged in the gallery above, 
and, as if is a very sprightly creature and 
the borrowed autumn light in the gallery is 
very weak, a good photograph was impossible, 
the animal being never still for a second. 
The lower photograph was taken to show the 
Bennett’s 
Tree 
Kangaroo. 
BENNETT'S TREE KANGAROO. 
Animal Life 
tail, which, it will be observed, differs from 
that of the ordinary kangaroo or wallaby ; 
the fore-lmbs also are longer, enabling the 
animal to climb, and in the true arboreal 
species the original form of the foot persists. 
Huxley believed that the kangaroos and 
wallabys were of arboreal origin, and that 
the foot as well as the hand was originally 
of a prehensile type. The kangaroo foot, as 
we now know it, consists practically of a 
single digit, the fourth (with which it can 
inflict very severe injuries), the other digits 
being remnants of former toes. On the 
hand of the fore-feet, however, the five toes 
still remain. Bennett's tree kangaroo is a 
striking  in- 
stance of 
adaptation 
in the one 
case to tree 
life, and the 
ordinary 
kangaroo or 
wallaby in 
the other to 
existence on 
the ground. 
Ws 
Five  differ- 
ent varieties 
of wild geese 
are given as 
illustrations 
of the differ- 
ence in the 
markings of these birds; and when it is 
considered that there are 933 
varieties at the Zoo, the num- 
ber shown will only convey a 
broad idea of their beauty—one can hardly 
say grace. The wild goose is supposed to 
breed in the northern parts of Hurope, and 
in the beginning of winter to descend into 
more temperate regions. They are often 
seen flying at very great heights in flocks 
of from fifty to a hundred, and seldom 
resting by day. The Bean goose, or, as it 
is frequently called, wild goose, is common 
in many parts of the country from autumn 
until late in spring, and is said to exhibit 
A variety of 
Geese 
