550 REV. O. P. CAMBRIDGE ON NEW AND RARE BRITISH SPIDERS. 
each hind lateral eye, running backwards to the occiput, is a long, narrow, but deepish 
indentation, tapering to a fine point at its hinder extremity; from two to four bristly 
hairs directed forward form a single row along the centre of the caput. 
An adult male of this small spider, which is very distinct in form and structure from 
any yet recorded British species, was found early in March 1872, upon the lawn at 
Bloxworth Rectory, by my nephew, Frederick Octavius Pickard Cambridge. 
WALCKENAÉRA NODOSA, sp. n. (Pl. XLVI. fig. 21.) 
Male adult, length 12 line. 
The cephalothoraz of this spider is of a pale dull yellowish brown, suffused with dusky 
black, the legs and palpi pale yellowish, and the abdomen of a dull blackish colour ; but as 
the example had evidently not long effected its final change of skin, these colours cannot - 
be relied upon as representing the true adult coloration. In their ultimate condition 
the colours would probably be:—cephalothorax, falces dark yellow-brown, legs bright 
orange-yellow; and abdomen black. In form the cephalothorax is peculiar, differing 
remarkably from every other known British species, but bearing some relationship to 
(Erigone) Lophomma mitratum, Menge (a German species); the point of junction of 
the caput and thoracie segments is elevated slightly, so that the space between it and 
the occiput is hollow or depressed when looked at in profile. The fore part of the caput 
is elevated into a roundish not very large knob or eminence ; this knob is well-defined, 
and divided on the sides and hinder part from the rest of the caput by a deep groove or 
indentation. The clypeus occupies nearly if not quite two thirds the height of the 
facial space; it is slightly impressed below the fore central eyes, but is prominent at 
its lower margin, and slopes generally forwards in that direction. Near the fore part of 
the cephalie knob, on the summit, are the two hind central eyes; below these, on a slight 
prominenee immediately below its base, are the two fore central eyes, near together 
and very minute; nearly in a line with these last are those of the lateral pairs, the eyes 
of which are respectively contiguous to each other. The length of the line formed by 
the lateral and fore central eyes appeared to be double (or nearly so) the length of that 
formed by those of the hind central (or upper) pair. 
The falces are rather strong, divergent, and about equal to the facial space in length. 
The legs are moderately long and strong, their relative length is 1, 4, 2, 3; and they 
are furnished with hairs and a few fine erect bristles on their uppersides. 
The palpi (similar in colour to the legs) are rather long. The cubital joint is long, and 
increases in its size forwards in a somewhat clavate form. The radial is exceedingly short 
and can scarcely be distinguished as separate from the apophysis which issues from its 
extremity ; its point of issue from the cubital is of a very small and narrow neck-like 
form ; and thence it immediately spreads out into three apophyses: these are all strong 
and of a somewhat tapering blunt-pointed form ; the one rather on the inner side in front 
is the largest and longest, and terminates with an (apparently) corneous, curved, sharp- 
pointed spine; on the outer margin of this apophysis, near its base, is a small, black, 
corneous, sharp, tooth-like prominence or point; and inside it is another small one of 
the same nature. The digital joint is of moderate size, and a little irregular in form. 
