chamberlin: the arachnida. 213 



median dorsal accent shaped black stripe with point cephalad and 

 base at middle; enclosing dorsal area is a dark band of elliptical form 

 with a cross connection toward caudal end, also united with anterior 

 band along middle line, and a network of finer dark lines connecting 

 with the median dark mark elsewhere within the ellipse. 



Posterior row of eyes a little recurved ; a little longer than the ante- 

 rior row; median eyes farther from each other than from the laterals; 

 laterals equal to the medians. Anterior row of eyes in dorsal view 

 recurved in such degree that a line tangent to anterior edges of laterals 

 passes through the posterior fourth of medians; in anterior view the 

 row is straight; median eyes but little smaller than the laterals, near 

 their diameter apart and three fourths as far from the laterals. Area 

 of median eyes somewhat trapeziform, the width anteriorly being less 

 than that posteriorly in about ratio 5:6. Anterior lateral eyes their 

 diameter from lower edge of clypeus. 



Epigynum with openings widely separated, protected by laminae, 

 (Plate 8, fig. 8). 



Sternum much longer than wide (18:13). 



Cribellum undivided as in most species. 



Female. Length 3.25 mm. Length of cephalo thorax 1.1 mm.; 



Locality — San Miguel 6,000 feet, July. (Type, M. C. Z. 162, one 

 female). 



Four species, all based similarly upon females, have been previously 

 described from Peru. The present species is most readily separated 

 from these and other South American species through the different 

 form of the epigynum, the eye relations, and the coloration. 



SCYTOTIDAE. 



LOXOSCELES RUFESCENS (Dufour). 



Scytodes rufescens Dufour, Ann. gen. sci. phys., 1820, 4, p. 203, pi. 77, f. 5. 



Numerous specimens of both sexes were taken at Huadquina in 

 July and August, 5,000 feet. (M. C. Z. 163, 164). This species is 

 widespread in both hemispheres. 



