SICARIOIDES. 49 
The genus Sicarius may eventually be found in Central America, and we have 
therefore figured the details of structure of S. thomisoides, Walck., from Chilian 
specimens in the British Museum. (See Tab. III. figg. 11, lla-s, ¢.) 
A. Sternum longer than broad, rather produced behind, narrowed and 
finely bilobate. Legs furnished beneath with rows of numerous long 
spines, in addition to the lines of smaller ones. Carapace convex, 
smooth, without warts or prominences, with simple convergent lines 
of fine bristles. Femora with simple spines only. . . . . . [Sicarrus, Walck.*], 
B. Sternum broader than long, not produced or so much narrowed behind, 
broadly bilobate. Legs without rows of long spines in addition to 
the smaller ones. Carapace compressed, bearing warts set with 
bacilliform hairs. Femora with tufts of bacilliform hairs on the . 
dorsal side . . . . 2. ee we we ee ew ee ee) 6« )6SICARIONDES, GER. NOV. 
SICARIOIDES, gen. nov. 
1. Sicarioides rugosus, sp.n. (Tab. III. figg. 12, 12a, 6, 2.) 
Type, 2, in Mus. Brit. 
. Total length 10-5 millim. ; carapace 4°5 x 5 millim. 
Q. Colour. Body and legs entirely rich chocolate-brown, marked with black obseure blotches. 
Q. Structure. Carapace very broad, quite flat, rugulose, with distinct warts, bearing bacilliform hairs. Legs 
clothed with numerous short stout hairs, the femora bearing dorsally numerous tufts of three or four 
white bacilliform hairs. The tibie, protarsi, and tarsi with numerous short sharp spines arranged in 
longitudinal rows, but no long spines as in Sicarivs. Sternum broader than long, entirely clothed with 
short, closely-clustered, bacilliform spines. Eyes as in Sicarvus. 
Hab. Costa Rica, Bebedero. 
Subfam. SCYTODIN. 
Colulus present between the anterior spinners. Anterior rows of eyes very strongly recurved. Lateral eyes in 
contact. Tarsal claws three (inferior claw often obsolete), set on a long, very distinct onychium. Clypeus 
narrow, oblique. External side of mandible finely striate (less closely than in the three other subfamilies 
of Filistatide). Inner side of the femur of the palpus set with one short stridulatory spine. Mandibles 
with a membranous lip on the outer side at the apex (less developed than in the Loxosceline and 
Sicariine). Palpus of female with two or three claw-like appendages at the apex. Anterior margin of 
maxille strengthened by a chitinous rim, finely serrulate. Carapace very eonvex and raised posteriorly. 
Thoracic stria present, but no groove. Body and legs clothed with shorter and longer fine hairs. 
‘The species belonging to this subfamily are very widely distributed, being found in 
every quarter of the globe; they are, however, confined to the tropical and subtropical 
regions, gradually disappearing in the temperate zones. ‘These spiders are found under 
* It is unfortunate that one eannot restore to this genus the name Z’homisoides, given to it by Nicolet. 
Walckenaer had seen Nicolet’s unpublished figures, but, on the ground that the name given to the genus was 
unsuitable, substituted Sicarius. 
BIOL. CENTR.-AMER., Arachn. Aran., Vol. II., June 1899. ay 
