152 Annals of the South African Museum. 



equally separated from each other, the intervals heing scarcely more 

 than a diameter interval apart, and the length of the line formed 

 by the fore-central pair of eyes being rather less than that of the 

 hind-central pair. The genital aperture differs a little in form from 

 that of E. molesta, but bears a general resemblance to it. 



Examples received from "Ceres Village" and Clanwilliam Village, 

 Cape Town. 



GENUS LATRODECTUS. 



LATRODECTUS CONCINNUS, sp. n. (PI. X., fig. 4 3 ; PL X., fig. 3 5 .) 



This spider is in its markings very much like L. geometricus, 

 G. L. Koch, but on comparing typical specimens (in my possession) 

 of that species figured and described, from Minas Geraes. S. Anier.), 

 by the late Count Keyserling, in " Spinnen Amerikas," p. 148, 

 pi. vii. fig. 92, it appears to be quite distinct. It is very much 

 larger, and the palpi of the male as well as the genital aperture 

 of the female are different. 



Adult male length rather over 1|- lines ; adult female from 4 to 

 5 lines. 



(The measurements of L. geometricus, C. L. Koch-Keys., are 

 <? 1^ lines ; ? from 2 to 3 lines.) 



In the male the colour of the cephalothorax is yellow-brown with 

 a rather diffused central longitudinal and lateral marginal stripes on 

 each side of a darker hue ; the legs are pale yellowish with a brown 

 tinge at the fore-extremities of the joints. 



The abdomen is oval, of a dark brownish grey colour, along the 

 central line are three round-oval, white spots margined with black, 

 the hinder spot produced backwards into a stripe which reaches the 

 spinners ; on each side of the central stripe and spots is a longi- 

 tudinal row of four round, black spots, each of which is included in 

 and close to the beginning of a long, nearly vertical lateral tapering 

 white stripe edged with black ; these oblique stripes are parallel to 

 each other and end at the margin of the under side of the abdomen. 

 This last is black or blackish, and has a large dicebox-shaped white 

 central marking, and the spinners are encircled by several white 

 spots. 



The palpi are short, the radial joint very short, spreading on its 

 outer side, and with a marginal row of bristly hairs ; the digital joint 

 is oval, rather large, the palpal organs have a long, closely coiled 

 filiform black spine at their extremity, and one large separated 

 coil running completely round the base of the digital joint and palpal 



