34 TULLGREN, SPIDERS COLLECTED IN SOUTH-CHILE BY P. DUSEN. 



terizing for this species is a number of small brushes of long 

 upturned yellow hristlcs on tlic hach of the abdomen. These 

 brushes are arranged in five longitudinal rows and are about 

 five in each row. — • By a young specimen there is in the 

 middle of the back a nearly triangulär dark spöt, limited by 

 a narrow black waved stripe. In the middle of this spöt 

 some longitudinally arranged light spöts. 

 Vulva conf. Pl. III, fig. 4 a — c. 



Measurements : 



total length 13,6 mm. 



length of the cephalothorax 6 » 



breadth » » » 4,2 » 



length » » abdomen 10 » 



breadth » » » 8,2 » 



length » » 1st leg 17,2 » 



» » » 2d » 16 s 



» » » 3d » 10 » 



» » » 4th » 15,2 » 



Three ad. females from the upper, a single young one from 

 the lower part of the Aysen Valley. 



A. mammiferus n. sp. 



Female. — Cephalothorax oval, more long than broad; 

 the front is about half as broad as the broad est part of the 

 pars thoracica. It is slightly convex, the pars cephalica is 

 distinctly separated from the pars thoracica. The transverse 

 impression distinct. On the sides of pars thoracica shallow 

 radiating furrows. The colour of the pars thoracica is påle 

 yellowish, that of the pars cephalica blackish-brown. The 

 clypeus is about as high as the diameter of the anterior 

 middle-eyes. Especially the pars cephalica is clothed with 

 long adpressed thick snow-white hairs. 



Eijes. — The front-row is very little recurved; the middle- 

 eyes are separated by an interval nearly as broad as the 

 diameter of the eyes and the distance from the lateral eyes 

 about IV2 as long. The two lateral eyes are nearly conti- 

 guous, obliquely situated on a low tubercle. The hind-row 

 slightly recurved; the middle-eyes separated by an interval 

 nearly as long as the diameter of the eyes and the distance 

 from the lateral ones more than twice as long. The area of 



