ARACHlSriDA OF LAKE FEMI. 401 



Grenus Ltcosa, Latr. 



Ltcosa Guentheei, sp. n. (PI. 26. figs. 1, 1 a, 1 1.) 



$ . Colour. Carapace with two broad brown bands extending 

 from tte eyes to the posterior margin on each side of the pedicel, 

 separated by a flavous median band about equal to them in width ; 

 aflayous band of about the same width running along the lateral 

 border ; abdomen yellowish white, with two fuscous bands ex- 

 tending along each side of the upper surface from the anterior to 

 the posterior extremity, and a median dark band between them, 

 distinct on the anterior half of the upper surface but breaking up 

 and becoming obsolete posteriorly; sides and lower surface of 

 abdomen yellowish white, with narrow indistinct abbreviated lines 

 behind the epigastric fold ; legs yellowish, inf uscate distally, 

 sometimes mottled with fuscous spots above ; underside of femora 

 yellow, of tibiae yellow at base, becoming fuscous distally ; tibia 

 of 4th leg with two black bands, one apical and one basal, the 

 basal sometimes obsolete ; tibia of 3rd leg sometimes with apical 

 band ; coxse and sternum flavous ; mandible black in the apical 

 half, yellow above ; palpi flavous, with tarsus black. 



Carapace about as long as patella and tibia of 1st leg and as pro- 

 tarsus of 4th, barely as long as patella and tibia of the 4th ; width 

 of carapace about equal to tibia of 4th and exceeding that of 

 Ist ; posterior median eyes not much more than half a diameter 

 apart ; eyes of anterior line narrower than those of the median 

 line by about half the radius o£ one of the latter on each side, 

 only slightly procurved, the upper edge of the laterals above the 

 centres of the medians, the medians only slightly the larger ; the 

 laterals almost their own diameter below the posterior medians. 



Mandibles clothed above and externally with yellow hairs, black 

 internally and at the apex ; posterior border of sulcus armed with 

 3 subequal teeth. 



Leffs 4, 1, 2, 3 in length, longish and slender ; tibiae of 3rd and 

 4th with two spines above ; patellae of 1st unarmed, of 2nd armed 

 with a minute anterior spine, of 3rd and 4th spined in front and 

 behind ; tarsal scopula of 3rd and 4th divided by a narrow but 

 sharply defined band of setae. 



Vulva as in fig. 1 b, PL 26. 



c? . Carapace barely as long as patella and tibia of 2nd leg, dis- 

 tinctly shorter than those of 1st and of 4th and than protarsus 

 of latter; patellae of all the legs armed with an anterior and a 

 posterior spine. Palpus as in fig. 1 a, PI. 26. 



Measurements in millimetres : — $ . Total length 18 ; length 



