28 Rev. 0. P. Cambridge on some view 



A single example of this spider, from Granada, South 

 America, is in the British-Museum collection. Although 

 allied to Idiops, Perty, it appears to me to be generically di- 

 stinct from that as well as from other allied genera, Idiosoma^ 

 Auss., IdioctiSj L. Koch, and Idiommata^ Auss. 



Gen. nov. AGANIPPE. 

 Generic cJiaracters. 



Cephalothorax longer than broad, and its fore extremity 

 rather narrower than the hinder part; caput tolerably and 

 roundly elevated. 



Falces massive, furnished with a group of strong tooth-like 

 spines at the fore extremity. 



Legs short and strong, relatively 4, 3, 2, 1 (?) ; terminal 

 claws three, with scopula beneath the tarsi and metatarsi of 

 the first and second pairs, as well as under the digital joints 

 of the palpi. 



Eyes minute, but occupying a large area, and disposed in 

 three transverse rows, 2, 2, 4, and somewhat like those of 

 Idiops, but more widely separated, and the front row very 

 much longer in comparison to the rest. 



Maxillce moderately long, cylindrical, and slightly curved. 



Labium oblong, its sides nearly parallel, and its apex trun- 

 cate. 



This genus appears to be intermediate between Idiops and 

 others of that group and Eriodon. 



Aganijype subti-istis, sp. n. (PI. VI. fig. 3.) 



Adult female, length 10| lines, including falces rather 

 over 12|. 



The colour of the cephalothorax, falces, legs, and palpi is 

 yellow-brown ; the eyes form a broad transverse oblong figure, 

 whose fore side is shorter, but not very greatly so, than the 

 hinder one ; the middle row is much the shortest ; and the 

 hinder row (consisting of four eyes) is slightly curved, the 

 convexity of the curve directed forwards ; the two central eyes 

 of this row are more than double the distance from each other 

 that each is from the lateral eye on its side of the same row. 



The legs (of which the third and fourth pairs are the 

 strongest) are furnished with hairs and bristles, the genual, 

 tibial, and metatarsal joints of those of the third pair being- 

 armed with numerous short and strong spines on their outer 

 sides. 



The abdomen (much shrunken, but probably of the form 

 given in the figure) is brown and hairy. 



