chamberlin: new spiders of the family aviculariidae. 47 



somewhat divergent; inferior process bent dorsad and somewhat 

 mesad at tip. Metatarsus IT scopuUite nearly to base; metatarsus 

 III scopulate nearly to middle; and metatarsus IV scopulate over 

 distal third. 



Spine of the male palpal organ long, very slender and needle-like 

 distally; in lateral view geniculate at beginning of the more slender 

 portion; in anterior view curving conspicuously but nearly evenly 

 ectad. 



Male (type). Length cir. 38 mm. 



Cephalothorax : length, 19 mm.; width, 16.1 mm. 



This species has similarities to G. mallicovium Auss., especially in 

 the stridulating organ. G. maUicomum has also been recorded from 

 Argentina. In the present species the male palpal organ is con- 

 spicuously different, the stylus being much longer, more slender, and 

 more curved. The eyes of the anterior row are larger and closer 

 together and in the male the elevation of the median ones above 

 the laterals in anterior view is distinctly greater. The eye-tubercle 

 in the female is relatively much lower. Tibia I in the male is longer 

 than the metatarsus. The cephalothorax in the male much exceeds 

 metatarsus IV. 



Gr-ajvimostola cala/ sp. nov. 

 Plate 3, fig. 8, 9. 



Tyye. M. C. Z. 39. cf. Chile: Talcahuano. Hassler Exped. 



ParaUjpc.— ^l.C.Z. 40. cf. Chile: Talcahuano. Hassler Ex- 

 ped. 



Integument of carapace, sternum, legs, and chelicerae, excepting 

 sides of coxae and ventral part of chelicerae, black or very nearly so. 

 Pubescence of carapace grey and brown; the longer hairs about 

 margins brown of pink tinge. Legs above with pubescence grey and 



1 KaXos, beautiful. 



