30 ARANEIDEA. 
side a slender epigyne bends a little over it, and has its very fine thorn-like extremity directed almost 
perpendicularly downwards. This portion of its structure will serve to distinguish Z. aculifera easily from 
all its near congeners known to me. 
Hab. Guatemata, southern slope of the Volcan de Fuego (Sarg). 
Epeira mobilis, sp. n. 
Adult female, length 2 lines. 
In size, form, colours, and general characters of the markings this spider closely resembles the common and 
well-known European and British Epeira acalypha, Walck. It may, however, be easily distinguished by 
the following characters :—The cephalothorax has no marginal black border (I have examined numerous 
English examples and not found one yet in which this is absent), The spines on the legs are much 
longer and stronger. The parallel oblique black stripes on the sides of the abdomen, so constant and 
regular in the European form, are quite irregular in HZ. mobilis. The underside of the abdomen has also 
only one white spot, just in front of the genital process, while in the European spider the underside of 
the abdomen has its lateral margins also marked with a strong broken white stripe or series of spots. 
The genital process also in the two forms differs slightly but distinctly. The pattern on the upperside of 
the abdomen in E. modzlis consists of an undivided central longitudinal black stripe flanked on each side 
of it, over the hinder half, with another parallel to the central stripe (in most of the European forms the 
central stripe becomes broken and irregular over its posterior half); this character, however, may perhaps 
be found to vary in EZ. mobilis on examination of a series of specimens. 
Hab. Mexico, Ciudad in Durango (Forrer) ; Guatemaa, Motagua valley, Chicoyoito 
(Sarg). 
An example found at Chicoyoito on bushes and another from the Motagua valley 
were contained in Mr. Sarg’s collection. It has also been found in Mexico by 
Mr. Forrer. 
Epeira lineatipes, sp. n. 
Adult female, length 14 line ; adult male, 13 line. 
The whole of the fore part of this small spider is pale yellow, with two converging black lines on the cephalo- 
thorax indicating the indentations between the caput and thorax, and meeting at the thoracic junction, 
and longitudinal black lines in front of the first and second pairs of legs; three lines on the femora, one 
on the femoral and tibial joints. The sternum also has some dusky marginal spots opposite the insertion 
of the legs, and there are two or three short longitudinal black lines on the basal portion of the falces. 
The eyes are in the usual three groups, somewhat closely placed together; the four centrals form a square, and 
the posterior pair are light amber-coloured, and larger than the anterior pair, which are placed almost 
close on the lower margin of the clypeus. 
The legs are of tolerable length and strength, 1, 4, 2, 3, yellow, with a slight suffusion of reddish-brown at the 
anterior extremities of the tibie. They are furnished with hairs and a very few fine spines. 
The abdomen is of a short-oval form (or subtriangular), being broadest before and pointed behind, and dull 
colour, closely mottled with white ; a tolerably regular white dagger-shaped marking runs along the middle 
of the upperside ; and on each side a longitudinal row of a few black spots converges to the spinners ; a few 
irregular white markings are on the underside. The genital process is characteristic, not very prominent, 
but with a small prominent recurved epigyne. 
In the male the ocular area is more prominent, and the black lines on the caput and legs more complete and 
conspicuous. The spines on the legs are also numerous, long, and rather strong, especially on the tibic 
of the second pair. 
The palpi are short, the cubital joint has two strong prominent tapering black bristles in front, the radial 
joint is strongly and angularly prominent on the outer side, and the palpal bulb is of moderate size. The 
palpal organs are prominent, well developed, and furnished with lobes, corneous points, and spines. 
