414 
PROCEEDINGS OF SECTION D. 
the character of ambulatory legs. The chief segments are still to be 
seen, but the tibia consists of not less than 26 movable segments, 
and the tarsus is composed of smaller segments of the same nature, 
amounting to 49 ; so that the whole leg is composed of 78 segments, 
resembling as nearly as possible the antennae of an insect or of a 
crustaceous animal, ending in a decided point, and presenting every 
appearance of a sensorial organ of feeling, and evidently doing the 
same service as the antennae do to insects, and the palpi to the other 
Arachnids. The Queensland species when walking keeps this first 
pair of legs elevated and stretched out horizontally, moving now and 
then the right or the left one to one or to the other side. 
As the maxillary palpi of the genus Charon are not used for 
feeling or grasping, but only for defence or aggressive purposes, the 
animals of this genus, mostly walking in the dark, have to employ the 
first pair of legs in the capacity of feeling organs, and the first pair of 
legs was transformed into a pair of feelers, of course not from a 
morphological point of view, but only physiologically corresponding to 
feelers of insects. 
I give now the generic and specific characteristics of the new 
species, which I call — 
Charon Annulipes, n. sp. 
Cephalothorax obcordate, with 2 big eyes and 2 small ones on 
each side. Abdomen ovate, with 7 ring segments and 4 tracheae, 
destitute of a stinging tail* Maxillary palpi formed into 2 thick 
claws as long as cephalothorax and abdomen together; the last and 
second last phalanx of these on the medial side provided with 3 
immovable stinging thorns. First pair of ambulatory legs nearly 
double as long as the other pairs; femur much thinner than the 
femur of the other legs, and double as long. Tibia divided into 26, 
tarsus divided into 47, movable lings, 
Charon annulipes measures from the point of the claws to the 
end of the abdomen 29 mm.; length of claws 12 mm,; of the cephalo- 
thorax 5 mm.; of the abdomen 10 mm. Length of first pair of legs 
35 mm.; of second pair 20 mm.; of third pair 22 mm.; of fourth pair 
20 mm. Colour of the body light-brown; of the legs light-brown, 
with dark-brown rings, about 4 on one leg. Habitat under the 
deciduous bark of gum trees. Only one specimen could be obtained 
of this highly interesting animal, the legs of which are quite without 
a parallel in the whole class of Arachnids. 
5.— NOTES ON DENDROLAGUS BENNETTIANUS (De Yis), 
THE TREE KANGAROO. 
By DUDLEY DE SOUEF. 
The general proportions of this animal seem stouter than most 
other members of the family . Its fur is long, rather coarse, and on 
the nape and upper part of the back is directed forward, and forms 
a kind of crest of fur. Its general colour is greyish- brown, being 
darker in the centre of the back; its snout and chin black, face 
greyish, forehead reddish-brown, with light patch of grey above the 
eyes; nape and upper portion of the back light reddish-brown, which 
