1882. ] SPIDERS FROM MADAGASCAR. 767 
falces large and powerful, the movable claw curved and tapering to 
a fine point ; palpi short, but with rather long, subcylindrical, slightly 
incurved, pointed, hairy terminal article; legs as usual short and 
hairy, with the femora somewhat flattened; sternum pentagonal, 
scutitorm. Abdomen transverse, unequally hexagonal, the angles 
mammoid, terminating in short acute spines, somewhat ascending ; 
the form of the abdomen, irrespectively of the angles, forms a 
truncated cone rather wider than long ; the anterior margin is con- 
vex in the centre and projects at the anterior angles in the form of 
an obtuse tubercle in front of the anterior spines ; the dorsal surface 
is nearly flat, slightly convex, granulose-punctate, with the impressed 
spots represented by rather large shallow depressions ; the ventral 
surface is strongly granulose, shelving, and deeply pitted at the 
sides, convex and transversely plicated inthe centre. Entire length, 
including the posterior pair of spines, 4 millim. ; width of abdomen, 
including spines, at widest part, 55 millim., at posterior lateral spines 
4 millim. 
Two examples: Central Madagascar. 
It is possible that this may be the male of some species described 
from the female; but if so, the form of the abdomen differs so much 
as to preclude a cabinet-naturalist from determining to which species 
it should be assigned. 
ULOBORIDA. 
Uxogorvs, Latreille. 
7. ULOBORUS VELUTINUS, sp.n. (Plate LVII. figs. 6, 6 a, 6 6.) 
Cephalothorax, sternum, and coxal joirts of legs dull black, covered 
with white pilosity ; when dry the cephalcthorax is brown with a 
white dorsal spot ; remainder of legs whitish, the femora indistinctly 
barred with red-brown, the tibize partly red-brown, the hairy clo- 
thing partly tipped with black ; tarsi yel'owish, with black terminal 
articles ; abdomen dull velvety-black, with four whitish dots in an 
arched series across the front, a broad transverse oblong yellowish 
patch on each side before the middle, two minute white specks in 
the dorsal region between the latter, and two small white spots to- 
wards the posterior extremity, ventral surface greyish. 
Cephalothorax bell-shaped, shelving, slightly depressed behind 
the caput ; eyes arranged much as usual’, but the posterior lateral 
eyes as large as the posterior central pair: abdomen oval, shelving 
obliquely in front and behind ; viewed laterally it is cuneiform with 
the short anterior margin arched ; the edge of the transverse ridge 
is depressed in the middle, leaving two obtuse humps, one on either 
side; ventral surface deeply and transversely depressed behind the 
spinnerets, convex and irregularly plicated behind this depression ; 
legs 1, 4, 2, 3, the anterior pair long, the femoral and tibial ar- 
ticles thick and slightly compressed, the tibize fringed towards the 
distal extremity with hair, tarsi slender ; remaining legs compara- 
tively weak, cylindrical. Entire length 5 millim. 
East coast of Madagascar. 
1 See Simon, Hist. Nat. des Araignées, p. 244. 
Proc. Zoou. Soc.—1882, No. LI. 51 
