chamberlin: new spiders of the family aviculariidae. 29 



ACTINOPODINAE. 



AcTiNOPUS xenus ' sp. nov. 

 Plate 1, fig. 5. 



Type.— M. C. Z. 3. 9 . South America? 



Paratypcs.— M. C. Z. 4. Tliree 9 9 . South America? 



Integument of carapace and femora of legs dark shining chestnut, 

 the chelicerae darker. The legs distad of the femora may be uniform 

 in color with these or more or less abruptly lighter, more testaceous. 

 Sternum and coxae of legs beneath more brown, of less reddish cast; 

 the labium and coxae of pedipalps darker. Abdomen dark brown. 



Pars cephalica anteriorly broad and convex; strongly narrowing 

 caudad, the limiting furrows distinct. Fovea thoracica less than 

 one third the width of the carapace. Pars thoracica depressed; a 

 little in front of each caudolateral corner is a very deep and sharply 

 defined depression which is typically elongate as a furrow subparallel 

 with the caudal margin; a shallower continuation of the mesal end of 

 the furrow sometimes bending cephalad and uniting with a median 

 longitudinal depression of varying depth, this being contiguous ante- 

 riorly with the fovea thoracica. 



Anterior row of eyes distinctly longer than the posterior. Anterior 

 median eyes their diameter apart; three and a fourth times their 

 diameter from the laterals. Anterior lateral eyes with diameter 

 between 1.2 times that of the medians; twice their diameter from 

 posterior laterals and 1.66 times their diameter from anterior margin 

 of clypeus. Posterior median eyes with long diameter about .9 that 

 of the anterior medians, smaller than that of the posterior laterals in 

 ratio 6 :7 ; only about .55 their diameter from laterals. 



Sternum longer than wide (10:9). Anterior median depression 

 distinct, with a weaker second depression caudad of it, or the two 

 depressions continuous and deep. The usual three pairs of foveae 

 converging to the depressed median area caudad of the primary ante- 

 rior median depression. Hairs rather numerous on borders and 

 anteriorly toward and over the labium. 



Labium a little longer than wide; conspicuously narrowed distad; 

 distally with numerous cuspules as usual. 



' Jtfos, strange, foreign. 



