740, MR. F, 0. PICKARD CAMBRIDGE ON [June 16, 
11 mm. long, 7 mm. broad, elongate oval; with four pairs of 
sigilla visible—lst pair at base of labial plate, 2nd marginal, 
3rd submarginal, 4th remote from margin. Labiwm broader than 
long, apex armed along its entire width with cuspules. Cowa of 
pedipalp scarcely twice its width; anterior distal angle slightly 
produced ; anterior basal angle armed with cuspules, becoming 
fewer and more scattered towards the disc. 
Legs spinose ; fourth pair longest. Tarsi and three-fourths of 
protarsi i. and ii. scopulate; of ili. tarsi and half protarsi, of iv. 
tarsi and very slightly at the apex of protarsi, scopulate. Femur 
iv. with velvet pad on inner side. Tarsal claws 2; inner with 7 
denticles, outer with 6. Spinners 4; posterior pair as long as 
tibia il. 
This species is very much smaller than A. geniculata, from which 
it differs, first in the relative length of the first and fourth pairs of 
legs, secondly in the proportion of the anterior eyes. Its tarsi and 
protarsi, too, are much less broadly padded with scopular hairs. 
A single female from Para; from a native palm-thatched hut. 
T have much pleasure in connecting this fine species with the name 
of Mr. Brocklehurst, to whom we are indebted not only for this 
specimen and many others, but also for great courtesy in rendering 
every assistance in his power to further the success of the expe- 
dition. This species is an addition to the National collection. 
The following species have been described and their differential 
characters diagnosed by M. Simon (Ann. Soc. Ent. Fr. 1892, 
. 280) :-— 
? A. musculosa, E. Sim., 3, op. cit. p. 281. San Mateo, Bolivia 
(Garlepp). 
A, maga, HB. Sim., 3, op. cit. p. 280. America Meridionalis. 
A. minor, Auss., 6, Verhandlungen &c., 1871, p. 206. Guiana. 
A. insubtils, E. Sim., 3, op. cit. p. 282. San Mateo, Bolivia 
(Garlepp). 
A, ferina, HE. Sim., ¢, op. cit. p. 282. Teffe, Amazonas. 
Genus AvicuLARrtaA, Lamarck, 1818. 
Avicularia, Lamarck, Anim. sans Vert. v. 1818, p. 107. 
Syn. Aranea, Linneus; DeGeer; Kleemann (in part). 
Mygale, Latreille; Walckenaer ; Hahn; Lucas (in part). 
Type.—Figures of two males in ‘ Dissert. Gen. Metamorph. 
Insect. Surinam.’ pl. xiii. (1726): Madame M. 8. Merian. 
Generic Characters. 
Anterior row of eyes strongly procurved. Legs of first pair shorter 
than those of fourth. Four pairs of sternal sigilla visible—1st at 
base of labial plate; 2nd marginal; 3rd marginal; 4th sub- 
marginal. Posterior pair of spinners longer than width of sternum: 
Carapace nearly straight (in profile) behind the eyes. Patella and 
tibia iv. longer than carapace. Protarsus and tarsi i., li., lil., and 
