EPEIRA. 25 
radial joints are greatly produced on the outer side. The digital joint has its hinder extremity prolonged 
by a strong, curved, tapering, obtusely ending process. The palpal bulb is large, and the palpal organs 
prominent and complex, with some strong spines and corneous processes at their extremity. 
The abdomen is similarly marked to that of the female, but more distinctly so. 
Hab. Mexico, Ciudad in Durango (Jforrer). 
This spider in the abdominal pattern reminds one much of £. wmbratica, Clk. 
Epeira solersioides, sp. n. 
Adult male, length 2 lines. 
The whole of the fore part of this spider is of a pale yellow colour, excepting part of the tibis of the first and 
second pairs of legs, which are yellowish-brown (from the appearance of the specimen, however, it had 
not long attained maturity, and therefore the true colours were probably not yet developed). In general 
form and appearance it is very like a scarce variety of the common European (and British) Z. solers, 
Walck., but may be distinguished by differences in the structure of the palpal organs, as well as by much 
shorter legs and a different spiny armature, especially on the femora of the first and second pairs. 
The eyes differ slightly in position from those of #. solers, the fore central pair forming a rather longer line in 
proportion to that of the hind centrals. 
The legs of the first pair have the femora (besides a few other spines) armed in front with three longitudinal 
rows of spines, the outer row most numerous and regular, but not the strongest; on the femora of the 
second pair there is only one row, towards the outer side; the tibiz of the second pair are rather incras- 
sated, and armed with stronger spines. 
The palpi are short ; the cubital joint has two long, strong, tapering, prominent bristles in front. The palpal 
bulb is not very large, the palpal organs well developed, not very complex, with corneous lobes and pro- 
cesses, one of which ends on their outer side, at the extremity, with a short pointed claw-like spine. 
The abdomen is short, broad, oval, blunt-pointed behind ; its colour is brownish, closely mottled with yellowish- 
white cretaceous-looking spots above and on the sides. On the fore half of the upperside almost the 
whole area is occupied by a subtriangular white marking, the angle directed forwards, and divided into 
four quarters by a dark-brown cruciform figure; following the outer margin of this white area and con- 
verging towards the spinners are, on each side, several black spots, and traces of transverse brownish bars ; 
a patch underneath, just in front of the spinners, is sparingly covered with small white spots. 
Hab. Panama, Bugaba (Champion). 
Epeira expleta, sp. n. 
Adult female, length 33 lines. 
In general form and structure this spider is of the normal type. The colour of the cephalothoraa, falces, 
sternum, maxille, and labium is deep rich black-brown, the two latter having their extremities margined 
with yellow. The caput and sides of the thorax are thinly clothed with greyish hairs, 
The eyes do not differ greatly in size; they are placed on tubercles in the usual three groups; the posterior 
pair of the central group are much closer to each other, and so form a much shorter line than the anterior 
pair; the four form a square whose hinder side is the shortest. 
The legs are moderate in length and straight, 1, 2, 4,3; they are of a yellowish colour, annulated with deep 
brown, the femora being almost entirely of the latter hue, and are furnished with hairs and a few spines. 
The palpi resemble the legs in colour. 
The abdomen is of a short, broad, roundish-oval form, very like that of the European £. solers; its upperside is 
a dark drab-brown, completely surrounded with a broad marginal black band, the inner edge of the fore 
part dull yellowish, and irregular, or deeply indented all round. On the hinder half is a central broad, 
dentated, slightly tapering, black band, the points of the denticulations on either side being continued as 
BIOL. CENTR.-AMER., Arachn. Aran., August 1889. ET 
