chamberlin: new spiders of the family aviculariidae. 53 



Parati/pct. — M. C. Z. 50. Ten immature specimens. Nicaragua: 

 Polvon. John A. ]McXeil. 



Integument of eephalothorax, legs and palpi from light to very 

 dark chestnut; chelicerae darker, in some individuals nearly black 

 above at base, paler beneath as usual. Pubescence of carapace 

 brown of a bronze lustre to more golden brown. Pubescence of legs 

 darker brown; patellae and tibiae dorsally with two longitudinal 

 stripes of bristles free light hair and the metatarsus with a similar 

 single stripe at proximal end; bristles short, from dark reddish brown 

 (male) to light brown (female). The femora with more grey pubes- 

 cence intermixed ventrally. Pubescence of sternum and coxae of 

 legs beneath brown. Entire dorsum of abdomen black, the sides and 

 venter abruptly paler, brown. Bristles of dorsum of abdomen reddish 

 brown proximad becoming cinereous distad. 



Eye-tubercle moderate in height. Ocular area (female) just twice 

 as wide as long; the anterior and posterior rows equal in length. In 

 anterior view a line tangent to lower edges of anterior median eyes 

 passes but slightly above the lateral eyes; in dorsal view a line tangent 

 to anterior edges of median eyes passes near or a little in front of 

 middle of surface of each lateral eye. Anterior median eyes with 

 diameter less than the longitudinal diameter of the laterals in ratio 

 5:7; four fifths their diameter apart and about their radius from 

 the lateral eyes. Posterior lateral eyes with longitudinal diameter 

 smaller than that of the anterior laterals in ratio 6:7; one third their 

 diameter from the latter. Posterior lateral eyes but little elongate; 

 their longitudinal diameter fully five sLxths as great as that of the 

 laterals; nearer the laterals than to the anterior medians. 



Labium densely spinulose across distal border as usual. 



Metatarsi I and II scopulate to base, III to middle and IV sparsely 

 scopulate at very end only. 



First leg of male with metatarsus straight, not bowed dorsad, a 

 little shorter than the tibia. Superior process of tibia stout, acumi- 

 nate from base. Inferior process less than twice as long as the supe- 

 rior, curving mesad as well as dorsad, the two processes scarcely 

 divergent. 



Tibia of male palpus moderately thickened. Bull) of palpal organ 

 on ectal side reddish brown while either the proximal portion of or 

 the entire stylus is black. Stylus in side view bent at right angles 

 to its base, curving a little forward toward middle and vcntrad; in 

 anterior view bent moderately ectad at middle; compressed but 

 narrow, gradually attenuated distad. 



