1882. ] REV. 0. P. CAMBRIDGE ON NEW ARANEIDEA. 437 
colour is a pale whitish yellow-brown, clothed with fine greyish 
hairs; on the upperside is a long, tapering, not very distinct, narrow, 
blackish longitudinal central stripe; on each side is a stronger 
blackish-brown one ; the underside has a broad longitudinal blackish- 
brown central band, with a narrower stripe or line on each side of it. 
The spinners are short, those of the inferior pair strongest ; and 
immediately in front of them is the supernumerary spinning-organ 
characteristic of the family and genus. 
Two examples of this very distinct species were contained among 
other Spiders found in Caffraria, and kindly given to me by Mr. J. 
Mansel Weale. 
MIAGRAMMOPES BREVICAUDA, Sp. n. (Plate XXXI. fig. 12 a.) 
Adult female, length 4 lines. 
In its general colouring and appearance this Spider bears close 
resemblance to MW. longicauda; but the shorter production of the 
posterior extremity of the abdomen distinguishes it at a glance. 
The legs also are shorter, though preserving the same relative 
proportions and armature ; and the cephalothoraz is uniformly of a 
deep but dull brown hue, no longitudinal central paler band being 
discernible. The abdomen of both the examples examined were in 
bad condition; but there appeared to be a stronger longitudinal 
dark central stripe on the fore half of the upperside, and the lateral 
bands are wanting; the underside has a longitudinal central 
yellowish-brown band, margined on each side with a strong, deeper 
brown line. Spinners short, compact, and in other respects like 
those of the foregoing species. The interval between the two central 
eyes appears to be slightly greater than in that species, but other- 
wise there is not much difference in this part of their structure. 
Two adult examples were received from Caffraria with those of 
M. longicauda. 
Family PottTrp&. 
Wx, g. n. (nom. propr.). 
Cephalothorax short, broad, sides deep and convex, lateral mar- 
ginal constriction slight, profile (to beginning of hinder slope) level. 
Height of clypeus considerably exceeds half that of the facial space. 
The caput appears to usurp the larger portion of the cephalo- 
thorax. 
Eyes rather small, in three widely separated groups, a central 
one of four forming a small, nearly vertical quadrangle on a slight 
prominence of the upper part of the anterior extremity of the caput. 
Each of the other groups, of two nearly contiguous eyes placed 
horizontally, is situated far below, near the lower fore corner of the 
caput. 
thage short, tolerably strong, not greatly different in length, 1, 2, 
4, 3; furnished with spines on the metatarsi, tibize, and genual 
joints. The tarsi end with three claws, beneath which are one or 
more supernumerary opposed pectinated ones. 
Falces long, powerful, conical and vertical. 
