1896.] SPIDERS FROM THE LOWER AMAZONS. 739 
though the Avicularias certainly scarcely had a chance, for I 
usually caught them under a handkerchief or glove, when the legs 
could not be used in the way described above. Still it is quite 
possible that they also act in the same way, for the abdomen of 
Avicularia was in many cases entirely devoid of pubescence. Santa- 
remia pocockii, however, had plenty of chances, but never made 
use of this method of defence, so far as I observed, nor were their 
abdomens in any case bare of pubescence. 
This handsome Spider is probably the Bird-eating Spider described 
and figured by Bates in his ‘ Naturalist on the Amazons,’ though 
I found nothing save beetle relics (Longicorns chiefly) in the bottom 
of the hollow where A. geniculata lived. So far as I know no 
account of the whisking off of irritating hairs by A. geniculata or 
any “ Mygale” has ever been published, if ever observed. 
There can be little doubt but that the A. geniculata here described 
is identical with the specimen in the Berlin Museum. This, a 
male, has been figured by Koch, and a male specimen in the British 
Museum of Natural History agrees well with the figure. The 
annulations on the legs are its chief characteristic. Whether 
Ausserer saw the type male or not, I cannot say, but he may have 
taken his descriptions from Natterer’s specimen from the Rio 
Branco, Brazil. The female of this species is an addition to the 
National collection. 
ACANTHOSCURRIA BROCKLEHURSTI, n.sp. (Plate XXXIV. fig. 18.) 
Q. Hab. Para. Type in coll. Brit. Mus. Nat. Hist. 1896. 
Length 60 mm., including base of mandibles. 
2 .—Colour. Carapace deep brown, clothed with grey-brown 
velvety pubescence. Margin of clypeus fringed with fine pink- 
tipped grey hairs. Base of mandibles thickly clothed with short 
grey pubescence and longer scattered rufous hairs. Abdomen 
clothed with deep brown velvety pubescence and long scattered 
rufous hairs; ventral surface velvet-black. Sternum and coxe of 
legs velvety, clothed with rich chocolate-brown pubescence. Labium 
and coxa of pedipalp pink, clothed with long pale-orange hairs, 
mner margin fringed with fiery-red hairs. Underside of base of 
mandibles pink; margins of fang-groove fringed with fiery-red 
hairs. Legs clothed entirely with rich chocolate-brown pubescence 
and long scattered rufous hairs, apex of each segment fringed with 
short cream-pink hairs. Patelle of i., ii., iii., and iv. exhibiting 
two longitudinal lines of short rufous hairs. 
Carapace 22 mm. long, 20 mm. broad; gibbous behind eyes, 
with a depression on either side. Central fovea deep, transverse- 
procurved. Hye-twmulus a little longer than broad, oval, promi- 
nent. Anterior row of eyes almost straight, procurved ; centrals 
searcely one diameter apart (a little less from laterals), their 
diameter distinctly greater than axis of laterals. Mandibles 
13 mm. long. Fang short, incrassate about the middle. Fang- 
groove with a row of teeth along inner margin; both margins 
fringed with red hairs, outer thickly, inner thinly. Sternum 
