HAMATALIWA.—SENOCULUS. 349 
1. Hamataliwa facilis. (Tab. XXXII. figg. 36, 36 a, b, 2.) 
ae facile, O. P.-Cambr. Biol. Centr.-Amer., Arachn. Aran. i. p. 140, t. 16. figg. 6 
6G a-c (?)’. 
Type, 2, in coll. Godman & Salvin. Total length 9 millim. 
Hab. Mexico, Chilpancingo in Guerrero (H. H. Smith 1). 
Fam. SENOCULIDA, 
Eye-formula somewhat resembling that of Ctenus: anterior row very strongly recurved, the centrals situated 
close to the anterior margin of the clypeus, the laterals just in front of the posterior laterals, scarcely 
visible ; posterior row slightly recurved, eyes larger, centrals nearer to each other than to the laterals. 
Protarsi i. and ii. without central apical spines beneath. Tarsi with three claws, not scopulate beneath, 
and without claw-tufts. Tibie i. and ii. with from 4-10 (Stenoctenus, Keys.), protarsi i. and ii. with 5-9 
pairs of long spines beneath. 
Thirteen species only belonging to this family have been described, nearly all from 
Tropical America. The spiders themselves have the habit of lying quite flat on the 
bark of trees, moving with great rapidity, being remarkably Sparassiform in appearance, 
and they make an elongate silken egg-cocoon. 
SENOCULUS. 
Senoculus, Taczanowski, Hore Soc. Ent. Ross. ix. p. 108 (1872). 
Labdacus, O. P.-Cambridge, P. Z.S. p. 118 (1873). 
Stenoctenus, Keyserling, Verh. zool.-bot. Ges. Wien, xxix. p. 340 (1880). 
Neothereutes, Holmberg, Bol. Acad. Nac. Cienc. Cordoba, v. p. 35 (1883). 
Type of Senoculus, S. maronicus, Tacz., Guiana; of Labdacus, L. monastoides, O. P.-Cambr., Brazil; of 
Stenoctenus, S. gracilis, Keys., Peru; of Neothereutes, N. darwini, Holmb., Argentine Republic. 
There is but this one genus belonging to the family Senoculide, unless the species 
described under Stenoctenus, possessing 9-10 long spines beneath tibie i. and ii., be 
regarded as forming a convenient generic group. 
The Central-American forms known to me can be recognized as follows :— 
Males. 
a, Apex of lamina round the inner anterior portion of the bulb of the 
palpus much broader and more evidently bifurcate . . . . prolatus, O. P.-Cambr. 
6. Apex of lamina round the inner anterior portion of the bulb of the 
palpus much narrower and slightly bifid, but simply canaliculate . canaliculatus, sp. nu. 
Females. 
Tibie i. and ii, with 4—4, and protarsi i. and ii. with 5—5, long 
spines beneath. 
