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



is synonym for Myropsis Backhaiiseni Sim., which Mr. Simon 

 has been so kind as to communicate to me. But not having 

 seen the cribellum or the calamistrum by the female, I refer 

 the species to tbe family Agelenidse. 



An examination of the species shows as said above some 

 difFerences from the genus Myro. The cheliceres have on the 

 inner margin of the claw-fnrrow more than nine teeth, of 

 which the hindmost are very fine and contiguous; the genus 

 Myro is characterised by 3 or 4 very small teeth. By the 

 great number of teeth this species agrees with Cybseus that 

 has 7 or 8, gradually diminishing in length. The genus Myro 

 has the hind-row of eyes much procurved, by this species 

 only slightly procurved. 



M. multidentata n. sp. 



Male. — Cephalothorax is broad oval, a little tapering 

 towards the front; the pars cephalica is very high convex 

 and the side-furrows are distinct. In the middle there is a 

 long and distinct central-furrow. The colour is dark brown, 

 darker on the pars thoracica. It is thinly clothed by long 

 blackish adpressed hairs and in the region of eyes some up- 

 turned long black bristles. The clypeus is nearly as high as 

 the anterior lateral eyes, 



Eyes. — The front-ro w is strongly procurved; the middle- 

 eyes about a third smaller than the lateral ones and the in- 

 terval between them is about as bi^-oad as their radius and 

 the distance from the lateral eyes about twice as long. The 

 two lateral eyes, of which the anterior one is the largest, are 

 very little prominent and separated by a space about as long 

 as the radius of the posterior one. The hind-row is a little 

 procurved; the eyes and the intervals between them nearly 

 equal in size; the intervals a little broader than their diame- 

 ter. The area of the middle-eyes is a little more broad than 

 long, much narrower in front. 



Cheliceres are dark red-brown. The inner margin of the 

 claw-furrow has 9 strong teeth equal in size and after the 

 ninth there are about six very fine and contiguous teeth, of 

 which the foremost one is the longest. 



Maxillce and lahium dark yellow-brown witli jialer ti23S. 

 The labium is a little more long than broad and is about as 

 long as the half maxilla. 



