REV. O. P. CAMBRIDGE ON NEW BRITISH SPIDERS. 461 
Palpi moderately long, slender; radial joint rather shorter, but much stronger than 
the cubital; its extremity is strongly emarginate, forming three short pointed projections, 
two above and one underneath; that on the outer side above is rather stouter than that 
on the inner side; the digital joint is small, oval; the palpal organs are prominent, and 
not very complex; they have a small, slender, curved, black spine at their extremity, 
near which is a prominent semitransparent mass of a membranous substance. 
Maxille long, strong, almost meeting at the extremities, over the labiwm, which is 
short and semicircular; these parts are similar in colour to the falces. 
Sternum broad, heart-shaped, glossy, convex, and punctuose, like the cephalothorax, to 
which it is also similar in colour. 
Abdomen longish-oval, moderately convex above, projecting a little over the base of the 
cephalothorax. Colour pale sooty brown-black, shining and sparingly furnished with hairs. 
An adult male of this spider was received from the late Mr. Richard Beck, by whom 
it was captured in the neighbourhood of London in 1864. It is most nearly allied to 
JW. borealis (Camb.); but the elevation of the caput is not so great, and the form of the 
palpi and palpal organs is strikingly dissimilar. In naming it after its discoverer, I have 
paid a slight tribute to the memory of a kind friend, and one zealous in the study of 
araneology, which he had followed out in some of its details, microscopically, with great 
diligence for some little time previous to his lamented death. 
WALCKENAÉRA NUDIPALPIS. 
Walckenaéra nudipalpis, Westr. Ar. Suecicæ, p. 201. 
Adult examples of both sexes were forwarded to me in 1866 by Mr. Morris Young, of 
Paisley, Scotland, by whom they were captured near that city. Its occurrence as a 
British spider is now recorded for the first time. 
WALCKENAÉRA CUCULLATA. | 
Micryphantes cucullatus, Koch, Die Arachn. Bd. iv. p. 45, pl. 89. figs. 200, 201. 
An adult male of this remarkable and fine species was given me by the late Mr. Richard 
Beck, by whom it was taken in Caen Wood, near London, in April 1863. It is now 
recorded for the first time as a British spider. 
Fam. EPEÍRIDES. 
Genus EPEÍRA. 
Errira YOUNGII, n. sp. 
Male, immature, length + of an inch. 
Cephalothorax broad behind; caput narrow and rather elongate; the colour of the 
thorax is red chestnut-brown, that of the caput yellowish; both are tolerably thickly 
clothed with hoary grey hairs; the height of the clypeus is equal to the space between 
the middle anterior and posterior eyes. 
The eyes are all in the normal position; 
the anteriors, and the largest of the eight. 
Legs not very long, moderately strong ; 
the middle posteriors are much larger than 
they are of a yellowish colour, the femora of 
