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



Measurements : 



total length 3,8 mm. 



leugth of the cephalotliorax l,t; >^ 



brodtli » » - 1,20 >. 



leugth v >> abdomeu 2,i >. 



breadth ^ v 1,2 -> 



length >-• >' 1st leg 5,5 » 



» » 2cl >^ 3,7 » 



» » i> 3d » 2,1 » 



» » » 4th » 2,8 » 



Fam. Thomisidae. 

 StephiUiopsis Cambr. 



Cambridge, Ann. Mag. Nat. Hist. 186!'. 



S. ditissima (Nlc). 



Of this species the collection oontains; one ad. feuiale from 

 the npper part of the Aysen Valle}'. 



S. antennata n. sp. 



Female. — CephulothorcLV is about as broad as loug. 

 much longer than the first tibia, suddenly tapering towards 

 the projected front, whioh is verv narrow. not as broad as 

 the half of the breadth of the pars thoracica. The pars ce- 

 phalica is also verv small and the front is high and projected. 

 The side furrows are distinct. The pars thoracica is compara- 

 tively convex. The clypens is about fonr tinies as high as 

 the diameter of the anterior middle-eyes. The coloiir is dark 

 grayish-brown. Tt is densely clothed with short whitish ad- 

 pressed hairs and especially in the region of the eyes there 

 are a number of regiilarly arranged thick clavated hairs. 



Eycs. — The front-row is strongly recurved. The inter- 

 vals are about equal in length. The anterior middle-e3'es 

 are much smaller than the lateral ones. The two latera 1 

 eyes are separated by an interval about twice as long as the 

 diameter of the anterior lateral eye, which is a little larger 

 than the posterior one. The hind-row is recurved; the middle- 

 eyes separated by an interval about thrice as long as the 

 diameter of the eyes and the space from the lateral eyes 

 nearly as loag. In the hind-row the middle-eyes are a little 

 smaller than the lateral one.>«. but all eves are smaller than 



