Trap-door Spider from South Africa. 319 



Moggridgea Dyeri, sp. n. 



Adult female, length 4§ lines ; length of cephalo thorax 

 2 j lines; breadth of cephalothorax, in the thoracic region, nearly 

 2 lines ; breadth of caput, at the fore margin, If line. 



The cephalothorax has a very slightly and gradually curved 

 slope from the eyes to the hinder margin, so that the caput 

 does not rise abruptly from the thorax as in Cteniza and 

 many spiders of the genus Nemesia ; the thoracic junction 

 is marked by a small but deepish subangular indentation, 

 the angle directed forwards ; the oblique indentation on 

 either side of the caput, next to the thorax, is pretty strong, 

 the thoracic indentations slight : the surface of the cephalo- 

 thorax is smooth, glossy, and of a deep brownish black colour ; 

 a few long bristly hairs stand up, nearly erect, from the ocular 

 area ; and two long ones, in a transverse line, are directed a little 

 forwards from a point close to the thoracic junction : the height 

 of the clypeus does not much exceed the longest diameter of 

 the fore lateral eyes ; immediately in front of each of these 

 latter is a deepish curved indentation, the curve of which is 

 directed forwards. 



The eyes are rather small ; they may be described as in the 

 four usual pairs, or else in two transverse curved rows, the 

 curves opposed to each other, forming very nearly the figure 

 of the letter W : the fore lateral eyes are the largest of the eight, 

 seated on tubercles, and rather of an oval form ; each of these 

 is separated from the fore central eye on its side by an interval 

 a little exceeding its own longest diameter, and in front of 

 each, rather on the inner side, is a strongish curved inden- 

 tation ; the fore centrals are round and separated by rather 

 more than a diameter's distance from each other, and close 

 behind them is a small transverse indentation : the hind lateral 

 eyes are also seated on slight tubercles, and each, with the 

 fore lateral and fore central eye on its side, forms very nearly 

 an equilateral triangle ; the hind central eyes are of some- 

 what irregular shape, smallest of the eight, of a shining pearly 

 lustre, and very near (but not quite contiguous) to the hind 

 laterals. 



The legs are short and strong ; they do not differ greatly in 

 length, their relative length being 4, 1 , 2, 3 ; they are of a 

 dark brown colour tinged with olive, the basal joints being 

 the lightest, the outer and under sides of the metatarsi of the 

 second pair, however, are nearly white : the tarsi and meta- 

 tarsi of the first and second pairs are broad and flattened on 

 the under or lower sides; each lateral margin of the lower 

 side is armed with a series of strong, slightly curved spines 



