208 ARANEIDEA. 
Abdomen large, very convex above, looked at from above and a little behind of a somewhat pentagonal form, 
truncated in front, much the broadest near the hind part; hinder slope abrupt, with a slight roundish 
prominence in the middle. It is of a pale somewhat golden-metallic hue, with a longitudinal central dull 
brownish stripe on the upperside, across the middle of which is a short black linear spot with a short black 
transverse stripe from each side near the end; looked at from behind the posterior slope presents a black 
spot on each side a little above the spinners, and from each spot a black curved line runs upwards. 
The genital aperture is of a characteristic form. Looked at sideways the abdomen forms nearly an 
equilateral triangle, the spinners forming the apex and the upper, strongly but not quite regularly 
curved, side the base. 
Hab. Mexico, Teapa in Tabasco (H. H. Smith). 
THERIDULA, Emerton. 
Theridula tricornis, sp. n. 
Female (scarcely adult), length 1} line; breadth of abdomen 1} line. 
This spider is closely allied to Theridula multiguttata, Keys., and also to 7. triangularis, Keys. Its colours 
and markings distinguish it readily from the latter, and the shape of the abdomen from the former. 
The cephalothorax is yellow, with a broken black marginal line and a broad central longitudinal band as wide 
as and including the ocular area, and widening as it runs backwards; this band is clearly and well defined, 
but at its posterior part its margins are obscured by a blackish suffused patch on the sides of the thorax. 
The eyes are on a strong prominence of the fore part of the caput; the clypeus is greatly impressed beneath 
them, and prominent at its lower margin, and it appears to somewhat exceed half the height of the facial 
space. The central quadrangle is longer than broad and narrower behind than in front. The fore- 
central eyes are the largest, and separated by an eye’s diameter, each being nearly contiguous to the fore- 
lateral on its side; the hind-centrals are separated by less than a diameter from each other, and by more 
than that from the hind-laterals. The eyes of each lateral pair are contiguous to each other. The 
posterior row has the convexity of its very slight curve directed forwards. The anterior row is greatly 
curved, owing to the prominence of the fore part of the ocular area. 
Legs short; yellow in colour, furnished, but not very thickly, with prominent bristly hairs. 
Falces moderately strong, straight, roundly prominent at their base in front. Colour yellow, suffused in front 
at their base with blackish. 
Mawille, labium, and sternum yellow, slightly suffused with yellow-brown. 
Abdomen large, broader than long, diamond-shaped, the lateral and posterior angles produced into rather fine, 
but not corneous, points. The lateral points are sharper than the posterior; under a strongish lens these 
points have a segmented appearance. Its colour is dull luteous-brown, marked with white; a large 
transverse slightly curved patch near the fore extremity and five large spots (three behind in a transverse 
row and two smaller in front), the hinder end, the rest of the upper surface, and the hinder slope being 
also speckled with minute white spots; the three angular points are blackish. ‘Spinners short, compact. 
Hab. Mexico, Teapa in Tabasco (H. H. Smith). 
EPISINUS, Walckenaer. 
Episinus bigibbosus, Cambr. 
Since the publication of the description of the female of this species (anted, p. 167, 
t. 20. fig. 8), I have come across the adult male of it, a description of which is now 
subjoined :— 
Adult male, length 2 lines, 
In general characters, form, and markings the male resembles the female. In the only example seen, however, 
of the male the colours are all paler, probably owing to its having more recently effected its final moult. 
The legs are much longer and slenderer, 1, 4, 2, 3, and their annulations scarcely perceptible. 
