chamberlin: the arachnida. 201 



Female (Urubamba). Length, 37 mm. Length of cephalothorax, 

 15.8 mm.; width, 13.1 mm. (In a female from Cuzco Valley the 

 cephalothorax is proportionately broader, the ratio of length and 

 breadth being 16:14.3). ' 



fern. tib.+pat. met. tar. total 



Leg I 11.8 mm. 1.5.3 mm. 7.5 mm. 5.6 mm. 40.2 mm. 



Leg II 11.0 13.0 7.1 5.3 36.4 



I^glll 10.0 11.8 8.8 5.5 36.1 



Leg IV 12.5 15.5 13.0 6.4 47.4 



Localities. — Cuzco Valley. (Type, M. C. Z. 142, one male; para- 

 type, M. C. Z. 143, one female) E. D. Flint coll. Urubamba, 9,500 

 feet, July. (M. C. Z. 144, one female). 



Hemirrhagus sp. 



Locality. — Urubamba, 9,500 feet, July. (M. C. Z. 326, several 

 immature females). 



Eurypelma aymara,^ sp. nov. 



Integument of carapace when dry black or nearly so, when wet 

 appearing of slight chestnut tinge. Sternum chestnut, darker cepha- 

 lad. Labium nearly black. Endites chestnut. Legs proximall\' 

 blackish like the carapace, becoming slightly more chestnut distad. 

 Carapace clothed with a coat of sandy grey and light brown hair 

 of a golden lustre. Hair of femora dusky brown of rufous tinge, that 

 of more distal joints with a larger proportion of grey intermixed; 

 bristles numerous and long, of rufous or rust color proximally, paler, 

 greyish yellow distad. Hair of venter of abdomen brown and black 

 intermixed, chiefly the latter. Dorsum with a thick coat of long 

 rufous bristles. 



Pars cephalica moderately high, highest a little caudad of eye- 

 tubercle. 



Eye-tubercle rather high, sharply limited ; highest along the median 

 longitudinal line which descends a little from between the posterior 

 median eyes cephalad. Eye-area considerably less than twice as 

 wide as long (25:16). Anterior row of eyes slightly shorter than 



' Aymara, a tribe of the indigenes of Peru. 



