1896.] SPIDERS FROM THE LOWER AMAZONS. 737 



Genus Aoanthosourbia, Ausserer, 1871. 



Syn. 1842. il/^/firff?^, C. Koch, Die Aracliniden, ix. p. 43, fig. 718. 



1850. Scurria, C. Koch, Uebersicht, v. p. 74. 

 Type. A. genieulaia (C. K.), S . In coll. Imp. Mus. Berlin. 

 Hah. America. 



Generic Characlers. 



Legs spinose. Patella and tibia iv. shorter, or not longer than 

 patella and tibia i. Tibia i. of tj armed with a single spur at apex. 

 Anterior row of eyes more or less slightly procurved. Femora iv. 

 clothed on inner side with thicic short soft hairs, forming a velvety 

 pad. Sternal sigilla visible — \st pair at base of labium; 2nd 

 marginal; 3rd submarginal ; ith remote from margin. 



AOANTHOSCURRIA GBNICULATA (C. Koch). (Plate XXXIV. 



fig. 17.) 



2 . Hah. Santarem. In coll. Brit. Mus. Nat. Hist. 1896. 

 Length 70 mm., including base of mandibles. 



2 ■ — Colour. Carapace mahogany-brown, clothed with short grey 

 velvety pubescence. Clypeus fringed with yellovv-pinjt hairs. 

 Mandibles black, clothed with short grey hairs and long rufous-pink 

 hairs. Abdomen black, velvety, clothed with long rufous-pink 

 hairs ; black, velvety, beneath. Sternum and coxae of legs deep 

 black-brown. Coxse of pedipalp and labium pale red-brown ; 

 inner margins fringed with fiery-red hairs and long rufous hairs. 

 Underside of legs blaclc-brown, clothed with long rufous-pink hairs, 

 the distal end of each segment fringed with cream-pink hairs. 

 Upperside : femora black, with grey pubescence, outer side fi'ingcd 

 with long rufous-pink hairs. Patella, tibia, and protarsus and 

 tarsus of i., ii., iii., iv. rich black-brown ; the distal end of each 

 segment and of the femur broadly tipped with short creamy-pink 

 hairs, forming a richly contrasting annulation. Patella and 

 tibia i. and ii., less so of iii. and iv., marked with a pair of 

 longitudinal rufous-pink hnes of short hairs. Protarsi i., ii., iii., 

 iv. with a short basal central rufous line. The pedipalp is similarly 

 marlied. The legs are everywhere clothed with long silky rufous- 

 pink hairs. 



Carapace 26 mm. long, 24 mm. broad ; gibbous behind eyes, 

 with a depression on either side. Central fovea small, slightly 

 recurved. Eye-tumulus longer than broad (more so than in 

 A. hrocklehursti). Centrals a full diameter apart, nearly a diameter 

 from the laterals ; their diameter distinctly less than axis of anterior 

 laterals. Anterior row of eyes more strongly procurved tlian in 

 A. hrocklehursti. Mandibles 15 mm. long. Fang short, only slightly 

 incrassate in middle below ; fang-groove armed with a single row 

 of teeth on inner side, fringed on both margins with fiery-red Iiairs, 

 thickly on outer side, more thinly on inner side. Sternum 15 mm. 

 long, 10 mm. broad ; elongate oval. Four pairs of sigilla visible : 

 1st at base of labial plate ; 2nd marginal ; 3rd submarginal ; 4th 



