746 MR. F. 0. PICKARD CAMBRIDGE ON [June 16, 
Araignées sont assez différentes de celles des Avicularia; tandis 
que ceux-ci sont assez lents, les Tapinauchenius courent avec une 
excessive rapidité.”—“ Je les ai trouvés sous des écorces d’arbres 
abattus dans les défrichements.” 
This is very interesting, for the habit is evidently totally different 
from those of the genus Santaremia described below, and gives 
an additional warranty to the goodness of the generic distinction. 
In certain Spiders from the Amazons and Trinidad,which resemble 
Tapinauchenius in the straightness of the anterior row of eyes, 
the first pair of legs is longer than the fourth, the sternal sigilla 
iii. and iy. are more removed from the margin, the legs of the ii. 
and iy. pairs are more slender than those of the first two pairs, and 
the legs are not clothed with long fringing hairs. On the ground 
of these differences I have formed a new genus for their reception, 
including two species, Santaremia pococki and S. longipes ; 
Tapinauchenius will include TL. saneti-vincenti; while Avicularia 
will include A. avicularia, A. walckenaeria, A. rutilans, &e. 
The following characters may be found useful in distinguishing 
these three genera :-— 
A. Anterior row of eyes strongly procurved ........5.+ Avicularia, Lam. 
B. Anterior row of eyes straight or nearly so. 
1. First pair of legs equal to the fourth. Legs clothed 
Wat Onpyairsh cosctepeeanPecaes acest ceets once daar Tapinauchenius, Auss. 
2, First pair of legs longer than the fourth. Legs 
clothed with short hairs ............-sssecssessscseeens Santaremia, n. g. 
SANTAREMIA, gen. nov. 
Anterior row of eyes straight or nearly so. Legs of first pair longer 
than those of fourth. Four pairs of sternal sigilla visible: 1st at base 
of labial plate; 2nd marginal ; 3rd submarginal ; 4th remote from 
margin. Posterior pair of spinners not longer than width of sternum. 
Carapace gibbous (in profile) behind the eyes. Patella and tibia iv. 
shorter than carapace. Patella and tibia i. equal to or longer than 
carapace. Legs clothed with short hairs. Protarsus and tarsi ill. 
and iv. much narrower, less spatuliform than i. and iii. Habits 
terrestrial, forming silk-lined burrows in the ground. 
Type. SANTAREMIA POCOCKI’, n. sp., 9 .—Hab. Santarem. Type 
specimen in coll. Brit. Mus. Nat. Hist. 1896. (Plate XX XIII. 
figs. 8, 9, & 13; Plate XXXIV. fig. 20; and Plate XXXYV. 
fig. 12.) 
Colour. Carapace dark brown, clothed with short sandy yellow- 
grey hairs, rufous towards and on posterior margin. Base of 
mandibles clothed with sandy and much darker brown hairs. 
Abdomen rich chocolate-brown, with scattered rufous hairs, more 
numerous towards spinners. Ventral area brown. Sternum, coxe 
1 [ have great pleasure in connecting this species with the name of my friend 
Mr. R. I. Pocock of the Nat. Hist. Museum. He had already named it in MS. 
from specimens taken near Pard by Mr. Bates, but kindly withdrew his claim 
to the species in my favour. 
