chamberlin: new spiders of the family aviculariidae. 65 



Distinct especially in the proportionate sizes and distances of the 

 eyes; in the more strongly elevated pars cephalica; the complete 

 absence of scopula from metatarsus IV, etc. 



ACANTHOSCURRIA CURSOR/ Sp. nOV. 



Plate 4, fig. 10. 



Type. — M. C. Z. 92. cf. Brazil: Ceara; Maranguape Mts. 

 Stanford 1911 Exped. to Brazil. \V. M. Mann. 



Paratype. — M. C. Z. 90. cf. Brazil: Ceara; Maranguape Mts. 

 Stanford 1911 Exped. to Brazil. W. M. Mann. 



Integument of cephalothorax and legs dark chestnut, in parts 

 almost blackish. Pubescence of body in general dark mouse colored, 

 grey intermixed especially on ventral surfaces of femora as usual. 

 Bristles rufous brown, those forming the fringes on endites and cheli- 

 cerae brighter red. The whitish fringe across distal ends of joints 

 above very narrow. Darker than in most species of the genus. 



-Anterior row of eyes weakly procurved, a line tangent to anterior 

 edges of median eyes in dorsal view passing a little in front of middle 

 of laterals. Anterior median eyes with diameter clearly and con- 

 siderably less than that of the laterals (ratio cir. 13: 17); less than 

 their diameter apart (10: 13), closer to the laterals. Posterior lateral 

 eyes slightly larger in long diameter than the anterior lateral ones 

 (13: 12). Posterior median eyes very close to the laterals and also to 

 the anterior medians from which they are but little farther removed. 



Anterior surface of femur I with plumose hairs over entire length, 

 these becoming more and more numerous proximad, sparse distad; 

 plumose hairs similarly occurring over entire length of caudal surface 

 of femur of palpus. 



Tibial process of leg I in the male large, diverging more than in A. 

 fracta and larger and proportionately narrower than in A. minor; 

 distally presenting 9 or more closely appressed spinous divisions. 



Tibia of palpus of male moderately enlarged, narrowed distad; ectal 

 tubercle low and stout, acute, triangular in outhne with the anterior 

 and caudal sides straight ; higher than in A . minor. Spine of bulb much 

 longer than in A. mifwr, without the conspicuous spiral carinal eleva- 

 tion; a single short spinous tip with a moderate rounded bulging plate 



• cursor, a runner. 



