108 MR. H. W. KEW ON THE 
easily obtained; but since it requires constantly moist con- 
ditions there are difficulties in keeping it for long periods. 
However, a few were maintained in health for several months; 
and two females made brood-nests both attached in part to the 
glass. It had been supposed that the differences in the chelicere, 
more particularly the absence of galez, would correspond with 
differences of method; but the animal’s proceedings appeared to 
be identical with those of Chelifer. As with those animals, the 
framework of the nest was rapidly constructed, the extraneous 
matters being carried in the chelicere ; and no differences were 
observed in the manner of spinning or in the tissue. The silk 
was seen to proceed from the tubercle in several very fine threads, 
which, more especially during the earlier part of the work, were 
apt to coalesce, those from each tubercle often forming a single 
thread. At other times, that is during the formation of the 
dense tissue, the threads more often remained separate, fusing 
thus to the substratum, and those deposited on the glass ran in 
irregularly parallel series, usually six together, presumably one 
from each of the pores of the tubercle. 
Tt will have been noticed that the number of spinning-openings 
appears to have been six on each chelicera, twelve in all, in all 
three species, the presence or absence of the galea counting for 
nothing in this respect; but this number is not necessarily 
universal. The branching of the galea, for instance, is a variable 
feature from group to group. For the rest, however, it may be 
predicted that the general lines now indicated are those on which 
all the animals of this Order, whether possessing the galea or not, 
set about the construction of their nests. 
NARUE 
Summary.—Pseudoscorpiones make nests in part or wholly of 
silk from their own bodies. They enclose themselves in them for 
moulting, for brood-purposes, and in some cases for hibernation. 
Such nests are closed cells of spun-tissue with or without an 
external covering of extraneous matters. They are roughly 
circular, but their form differs with the build and habitat of the 
animal. They may be attached above and below to the solid 
surfaces of narrow crevices and thus flattened, or they may be 
attached below only, in which case they have a free convex roof, 
or, again, they may be fixed here and there to surrounding objects 
and roughly globular. The external covering, when it exists, 
consists of earthy or vegetable fragments, which are not bound 
on to the structure but firmly attached to it. The interior is 
always free from foreign matters and smooth. The spun-tissue 
is thin and dense, almost like silk-paper. It is composed of 
innumerable threads crossed and re-crossed and coalesced in 
irregular confusion and without interspaces. The material is 
derived from glands in the cephalothorax, whose ducts traverse 
the chelicer to near the apex of the movable finger, and open at 
