STEPHANOPOIDES.—DELOZEUGMA. 105 
yellowish stripes run downwards on each side. Between the genital aperture (which is of simple but 
characteristic form) and the spinners there is on the underside a broad brown longitudinal band, narrowest 
behind and margined with yellowish-white. 
Hab. Panama, Bugaba (Champion), Veraguas (Boucard). 
This spider is nearly allied to S. brasiliana, Keys., and S. simonii, Keys., both from 
Para; but M. Simon has decided it to be distinct. 
PERISSOBLEMMA, Cambridge. 
Perissoblemma approximatum, sp. n. 
fmmature female, length slightly over 1 line. 
In general form and appearance this spider closely resembles P. thomisiforme, Cambr., from the Amazons 
(P. Z. S. 1881, p. 774, t. 66. fig. 6); it differs, however, in its colours and in the position of the lateral 
eyes of the anterior row and their relative size. 
The cephalothorax, falces, maxille, labium, and sternum are dark yellowish-brown. 
The legs are moderately long and strong, armed with spines beneath the tibiw and metatarsi, yellow, with a 
slightly olive-green tinge. They are nearly equal in length, those of the third pair a little the shortest. 
The abdomen is dull sooty-brown, paler underneath, and clothed with short hairs. 
The eyes of the fore-central pair are much larger than the laterals on each side of them, and these last, instead 
of being almost in the same curved line as the two on each side of the posterior row, are placed much 
more in front of them—the four anterior eyes forming, in fact, a straight line, whereas in P. thomisiforme 
the line is curved. The height of the clypeus rather exceeds the diameter of one of the fore-central eyes. 
Hab. Panama, Bugaba (Champion). 
DELOZEUGMA, gen. nov. (Drasside). 
Cephalothorax oval, rounded behind, moderately constricted laterally forwards, truncated in front ; moderately 
convex above, caput fairly rounded and scarcely higher than the thorax, a slight dip only, when looked 
at in profile, between the caput and thorax; thoracic indentation longitudinal, deep, but narrow; hinder 
slope gradual; clypeus low. The middle of the ocular area a little projecting forwards. 
Eyes, looked at from above and behind, in two transverse curved rows, the curves of which are directed away 
from each other. They are of moderate size, subequal; those of the fore-central pair are considerably the 
largest, and their visual axis is directed straight forwards. The four centrals form a square; those of 
each lateral pair are placed slightly obliquely on a very small tubercle, and the eyes: of each are nearly, 
but not quite, contiguous to each other. 
Legs rather long, moderately strong, armed with spines (at least those of the third and fourth pairs, for the 
others are absent, owing to damage before the specimen was received ; their relative length, therefore, 
cannot be ascertained). The tarsal claws appear to be two, with a small but compact thick claw-tuft 
and a thin scopula beneath the tarsi. 
Falces \ong, powerful, cylindrical, divergent, projecting forwards and rather downwards. Fang of great length 
and strength, as long as the falx; articulated horizontally, with a vertical movement, and, when at 
rest, lying straight backwards longitudinally along the middle of the underside of the falx, asin the 
Theraphosidee. 
Maville moderate in length and strength; rounded at the extremity on the outer, and obliquely truncated on 
the inner side, a little inclined towards the labium. 
Labium broader than long; scarcely half the length of the maxille, and somewhat roundly truncate at the 
apex, where it is not so broad as at the base, near which is a fine transverse suture. 
Sternum oval, hollow-truncate at its anterior extremity. (The abdomen is too much shrunken to give any 
certain idea of its form or of the spinners, which last appear to be short and compact, with immediately 
BIOL. CENTR.-AMER., Arachn. Aran., September 1893. pt 
