52 ARKIV FÖR ZOOLOGI. BAND 2. NIO 19. 



Ahdomen brown, clothed with grayish brown pubescence. 

 Anterior shoulders of abdomen black. The back with three 

 pairs of small yellowish spöts, of which two are situated just 

 above the spinners. Sides of abdomen marked with nume- 

 rous very small black spöts. The venter brown with four 

 very narrow backwards convergent yellow stripes. 



Vulva. This species is very near allied to A. bogotensis 

 Keys. and brunnens Cb.^ but is readily distinguishable by the 

 form of the vulva. The central tongue of the vulva has a 

 high and narrow carina in the centre and on each side of tliat 

 a distinct tubercle. The central tongue is truncated ante- 

 riorly, broadest in the middle and rounded behind though a 

 Httle attenuate. Conf. the fig. 24. 



Of this species the collection contains several adult and 

 young specimens from Tatarenda in Bolivia. 



Aglaoctenus n. g. 



It has been impossible to me to refer the species descri- 

 bed below to any genus before known or righter to any ge- 

 nus published by Simon in his Histoire naturelle des Araig- 

 nées and therefore I describe this as a new one. This genus 

 belongs to the transition-forms between the families Pisauridae 

 and Lycosidse and offers connection-points to the groups Do- 

 lomedesp and Hippasese. From several reasons I refer it to 

 the family Pisauridae, especially on account of the shape of 

 the tarsal claws. The superior claws are furnished with 14 

 long denticles and the inferior one has 3 very small ones. 



^ Cambridge, F. O. P., On cteniform spiders from the lower Amazons 

 and other regions of North and South America etc. in An. Mag. Nat. 

 Hist. Ser. 6, Vol. 19, 1897, p. 97 and 98. Pl. IV, fig. 2, a— d. 



