300 
Transactions of the Society. 
Unfortunately 1 have been forced to draw and describe this species 
from balsam preparations, and my memory of what they were when 
living. I prefer drawing and describing from the life, but bad 
mounted these two specimens for preservation, expecting to get 
others. 
Cilliba (Discopoma) pandata * sp. n., plate VI. figs. 3 and 9. 
Length of 9 about .. *35 mm. 
Breadth „ „ .. *32 „ 
This is a very small species, chiefly distinguished by the form of 
the anterior edge of the dorsal shield. 
Colour moderately dark red-brown. 
Texture chitinous, polished, but not highly so. 
Shape nearly round, but a trifle longer than broad. The central 
portion of the anterior edge instead of projecting, as is usual in the 
Uropodinae, is bent downward and backward, thus causing a slight 
incurving of the margin which is characteristic of the species. 
Dorsal surface very convex i quite smooth, without markings or 
large hairs ; there is, however, a row of extremely fine short hairs 
near the periphery, rather far apart, and a few sparse rows of similar 
hairs on the notogaster. These hairs are too small to be shown in 
the figure. 
Palpi rather long, projecting nearly as far as the first pair of 
legs do. 
Ventral surface without true markings ; deeply excavated to 
receive the legs ; the excavations for the fourth tarsi are but little 
wider than the tarsi themselves, and run almost parallel to the edge 
of the body. All the excavations are bordered on the inner side by 
broad chitinous ridges or strengthening-pieces. The genital plate 
(epigynium) of the female and the ridge bordering the aperture which 
it closes occupy the whole space between the ridges bordering the 
depressions for the last three pairs of legs. The epigynium is lanceo- 
late, the anterior end not quite pointed, the posterior end truncated, 
but not nearly so broad as the middle of the plate ; the ridge bordering 
the epigynium is joined anteriorly to that bordering the hinder edge 
of the aperture for the oral tube ; a narrow band of chitin joins the 
anterior edge of the same aperture to the de flexed edge of the dorsal 
shield. I have not found the male. 
Legs short and thin ; the fourth pair is situated rather far back. 
The tarsi of the first pair are thicker than those of the others, and of 
course, in this genus, terminate in long hairs only, without claws or 
caruncles. 
Habitat . — I found this species at Kensworth in Hertfordshire, in 
moss. 
Pandatus , bent downward in the middle. 
