274 bulletin: museum of comparative zoology. 



Locality. — Conservidayo River, August. (Type M. C. Z. 261, 

 one female). 



QuECHUELLA, gen. nov. 



Cephalo thorax ovate with the frons moderately broad; stria 

 thoracica fine but distinct, of moderate length. 



Posterior eyes subequal (in type the lateral a little the larger), 

 nearly equidistant, in a weakly proeurved row. Lateral eyes on each 

 side separated by less than their diameter. Anterior eyes in a re- 

 curved row; median eyes much smaller than the laterals, separated 

 from each other but nearly contiguous with the laterals. 



Clypeus much narrower than the anterior median eyes. 



Lower margin of furrow of chelicera armed with four small teeth. 



Labium extending beyond middle of endites; longer than wide 

 though not greatly so; distally truncate. 



Anterior tibiae (compressed in type) without spines. 



Furrow of posterior spiracle well in front of middle. 



Distal article of superior spinnerets short, conical. 



Genotype. — Quechuella lampra, sp. nov. 



Distinguished from xVnyphaena and related genera similarly having 

 the furrow of the posterior spiracle in front of middle in wholly lack- 

 ing of spines on the anterior tibiae and by its very narrow clypeus. 



QuECHUELLA LAMPRA,^ sp. noV. 



Plate 21, fig. 5-8. 



Carapace pale yellowish brown, dusky over sides and eye-region. 

 Sternum, endites, and labium yellow. Coxae of legs beneath and 

 proximal portions of femora yellow; legs more distad, especially 

 the tibiae and metatarsi, dusky to nearly black, the tarsi again paler. 

 Abdomen ventrally and over lower portion of sides a dilute yellowish 

 white; dorsum a very dilute brownish, marked at the base in the 

 median line with a darker narrow stripe which is followed caudad by a 

 series of paired dark dots extending to the spinnerets and on each side 

 of dorsum and upper part of sides also darker, (Plate 21, fig. 7). 



Posterior row of eyes very slightly proeurved; medians slightly 

 smaller than the laterals (ad. 5:6), a little less than their diameter 



1 Xafiwpos, distinct. 



