SATRICUM. 99 
SATRICUM, gen. nov. 
Nearly allied to Drassus. 
Cephalothorax: male, length and breadth equal ; female, breadth not much more than two-thirds of the length ; 
oblong-oval in the latter, broad-oval in the former ; lateral marginal constrictions at the caput moderate, 
nearly squarely truncated at the caput. The profile slopes a little downwards in a very slight convex curve 
from the hinder slope to the anterior eyes, with a slight depression at the thoracic junction ; hinder slope 
abrupt. Height of the clypeus less than half that of the facial space. 
Eyes small, almost equal in size; in two transverse rows, the anterior row straight, the posterior row slightly 
curved, the convexity of the curve directed backwards; rather near together. The eyes of the hind central 
pair are much nearer together than each is to the hind lateral eye on its side, and with the fore central 
pair they form very nearly a square, whose posterior side is slightly longer than the others—at any rate 
in the female. The eyes of each lateral pair are near together but not contiguous to each other. 
Legs strong, moderately long, 4, 1, 2, 3, but little difference between 4 and 1, furnished with hairs and 
spines ; a scopula beneath the tarsi and metatarsi of the first two pairs, but only beneath the tarsi of 
the third and fourth pairs. A claw-tuft beneath the two terminal tarsal claws. . 
Mazille long, strong, straight, broadest and rounded at the extremities on the outer side, somewhat obliquely 
truncated on the inner side, especially in the male. 
Labium oblong, truncated at the apex, and about two-thirds as long as the maxille, rather shorter in 
proportion in the male. 
Sternum oblong-oval, slightly pointed behind. 
Spinners short, compact, the four outer ones of very nearly the same length. 
Satricum gnaphosoides, sp. n. 
Adult male, length 73 lines ; female, length 92 lines. 
Cephalothorax yellow-brown, of a rather deeper hue on the caput, clothed pretty thickly with pale grey fine hairs. 
The eyes of the hind central pair are separated by as nearly as possible a diameter’s interval, and each is 
about two diameters distant from the hind lateral eye on its side. 
The legs are similar to the cephalothorax in colour. The spines are tolerably strong, and are disposed chiefly 
on the tibie and metatarsi; five pairs beneath the tibie and two pairs beneath the metatarsi of 
the first pair of legs, but only four pairs beneath the tibia and two beneath the metatarsi of the second 
pair. 
The falces are strong, straight, rather roundly prominent in front, of a deeper hue than the cephalothorax, 
and furnished with numerous hairs and bristles. 
The labium and mawille are a little paler than the falces ; and the sternum is similar in colour to the legs. 
The abdomen is oval, densely clothed with hairs and greyish pubescence, and of a yellowish-brown hue. 
The genital aperture of the female is conspicuous, of characteristic form, somewhat subtriangular, and of 
a deep reddish-brown colour. 
The sexes do not differ much in colour. The armature of the legs of the only male specimen obtained is defec- 
tive; but it appears to be a little different from that of the female, as I can only trace four pairs of spines 
beneath the metatarsi of the first pair of legs, similar in fact to those of the second pair. 
The palpi of the male are moderately long, similar to the legs in colour; the radial and cubital joints are 
furnished thickly with long, coarse hairs, and are nearly equal in length, the latter rather the shortest and 
strongest, with a single black slender spine on the inner side near the base; the humeral joint has near 
its extremity on the upperside three strongish black spines in a transverse row, and a single one behind 
them; the radial joint has a small, tapering, sharp-pointed, rather prominent apophysis at its extremity 
on the outer side, the blackish point a little bent inwards. The digital joint is large, oval. The palpal 
organs are highly developed, prominent, with, among others, a small hooked corneous process at the 
middle of the most prominent part. 
Hab. Guatemala, Tactic (Sarg). 
Mr. Sarg speaks of these as “‘ ground spiders.” 
