526 REV. O. P. CAMBRIDGE ON NEW AND RARE BRITISH SPIDERS. 
LYCOSA BIUNGUICULATA, sp. nov. (Pl. XLVI. fig. 2.) 
Male adult, length very nearly 4 lines. 
This spider belongs to the L. picta group; the sides of the caput are convex and 
sloping, so that the ocular area, although small compared with that of many other species 
of Lycosa, and occupying a less width than the width of the base of the caput, still 
occupies the full width of its upperside. 
The cephalothorax is of a yellow-brown colour, pretty thickly clothed with hor 
yellowish-grey hairs or pubescence; the groove adjoining the caput is of a blackish hue, 
as also are the ocular area and some indistinct converging lines on the sides of the 
thoracic portion; the caput is furnished with some not very long black bristly hairs, 
and a single longitudinal row of the same runs from the ocular area to the hinder 
slope, which is also furnished with a few more. 
The eyes of the hinder row form a line longer than those of the middle one, which 
last are slightly the largest of the eight; the quadrilateral figure formed by the eyes of 
these two rows has its hinder side the longest and its fore side the shortest; the two 
central eyes of the front or lowest row are rather further from each other than each 
is from the lateral, of the same row, on its side. There appeared to be little, if any, dif- 
_ ference in the size of the eyes of this row. The height of the clypeus equals the space 
between the eyes of the front and middle rows. 
The legs are rather of a lemon-yellow colour, slightly clouded and faintly banded 
with yellow brown, and marked with a few obscure reddish yellow-brown spots and 
lines ; the femora are clouded with red brown at their bases, and have one or two darker 
brown macule on their outer sides. They are moderately long, very strong, and are 
furnished with hairs, bristles, and spines. 
The palpi are similar in colour to the legs; they are strong, not very long, and the 
radial and cubital joints are of about equal length; the humeral joint has three short 
strong black spines, in a transverse row, near the fore margin of its upperside; the 
digital joint is not very long, but longer than the radial; it is hairy, and terminated 
by two strong curved divergent black claws. The palpal organs are neither very pro- 
minent nor complex, having several corneous processes closely compacted ; one near the 
middle is produced into a fine, tapering, sharp-pointed spine, directed outwards, and 
reaching to their outer margin; just above this spine is a smaller and shorter one, 
having the same direction. 
The falces are rather long and strong, with an inclination backwards; their upper 
halves are reddish-yellow brown, the rest nearly black; and they are furnished with 
strong, prominent, black bristles. 
Sternum oval and black. | 
The abdomen was much shrunken; but the normal, oblong, longitudinal marking on 
the fore half of its upperside appeared to be obtuse at its hinder extremity; it is 
bordered by a black line, and thickly clothed with greyish-white hairs, offering a strong 
contrast to the rest, which is of a reddish yellow-brown colour, with several transverse 
curved or slightly angular narrow stripes on the hinder half. The abdomen generally 
