66 bulletin: museum of comparative zoology. 



at its base as shown in the figure but not truly bifid and not at all 

 retrorse as in yi. geniculafa. 



Male (type). Length, 38 mm. 



Cephalothorax: length, 19 mm.; width, 17 mm. 



fem. tib. +pat. met. lar. total 



Leg I 18 nun. 23.2 mm. 14.2 mm. 8 mm. 63.4 mm 



Leg II 16.7 21 13.2 8 58.9 



Leg III 14.2 18 14.5 7.4 54.1 



Leg IV 17 21 19.5 9 66.5 



ACANTHOSCURRIA FRACTA,^ Sp. nOV. 



Plate 5, fig. 1. 



Type.— M. C. Z. 87. d". Brazil: Para; Para. Nathaniel 

 Thayer Exped. 



Integument of cephalothorax and appendages chestnut with the 

 reddish element pronounced. Pubescence of entire body dense and 

 velvety, mouse colored, more greyish on ventral surface of femora 

 especially. Bristles numerous, rust-brown. 



Anterior row of eyes procurved in such degree that a line tangent 

 to anterior edges of median eyes passes through or very near to middle 

 of the laterals. Anterior median eyes slightly smaller than the laterals 

 (diameters as 16: 17); scarcely three fourths their diameter apart and 

 not fully their radius from the laterals. Posterior lateral eyes with 

 diameter only about three fourths that of the anterior ones. Poste- 

 rior median eyes with long diameter about equal to that of the anterior 

 medians; very close to lateral eyes, farther from the anterior medians. 



Labium and endites of palpi as usual. 



Metatarsus I scopulate very nearly to base; II scopulate about 

 five sixths of length; III about one half of length; and metatarsus IV 

 less densely scopulate only at distal end. 



Process on tibia I in the male curving and distally becoming parallel 

 with axis of joint; in the type the process is distally partite with four 

 long stout acute teeth with dorsad of these and also on mesal surface 

 a number of stiff bristle-like bodies as shown in figures. 



Tibia of palpus of male inflated, moderately narrowing distad; 

 its exterior tubercle stout, short, with anterior edge concave and the 



^Jrango, break. 



