18/G.] REV. O. P. CAMBRIDGE ON EGYPTIAN SPIDERS. 599 



angular on each side near the middle and blunt-pointed at its hinder 

 extremity ; on either side of this macula, but free from its margins, are 

 two dark spots in a longitudinal line, furnished with bluish-white 

 hairs, the four spots forming nearly a square ; four or five other 

 similar spots on each side form two longitudinal lines on the hinder 

 half of the abdomen, the lines converging towards the spinners ; 

 these spots are connected into pairs by very faint dusky angular 

 transverse lines, or cbevrons, the apex of that which joins the first two 

 spots touching the hinder extremity of the normal macula on the fore 

 part ; the sides are mottled with small irregular patches and spots 

 of short bluish-white hairs. A series of examples would probably 

 show some variety in the distinctness of the pattern on the abdomen. 

 A single example only was found in a swamp near Alexandria. It 

 is very nearly allied to Pirata piratica, C. Koch, as well as to P. j)is- 

 catoria, C. Koch, and P. hygrophila, Thor. From the first of these 

 the larger size of the spider, as well as the dark colour of the normal 

 macula on the abdomen, will distinguish it at a glance ; from the 

 second, which is of about the same size, the much narrower white 

 marginal border of the cephalothorax, as well as the lateral yellow 

 bands, will, among other differences, serve to distinguish it easily ; 

 while from the third species it is at once separated by its greater size 

 and immaculate (or almost immaculate) legs. It is probably an 

 abundant Spider in the marsh referred to and in others near it ; but 

 I was unfortunately unable to pay this locality another visit after the 

 discovery of the single example now described. 



Gen. Trochosa, Koch. 

 Trochosa partita, sp. n. 



Adult female, length 5 lines. 



The cephalothorax of this handsome Spider is rather drawn out, 

 though not suddenly constricted laterally at the caput ; it is of a 

 yellow-brown colour, margined with a black line and a tolerably 

 regular though not unbroken yellow band ; the middle of the upper- 

 side has a somewhat star-shaped marking, formed by short yellow 

 stripes converging to the thoracic junction; there are also other 

 yellow patches of different sizes on the caput behind the ocular area, 

 which is strongly suffused with black-brown, leaving, however, a 

 clearish yellow space between the eyes of the hinder row. 



The eyes are in the usual position, the ocular area being about 

 equal in its length and breadth ; the fore centrals are nearly, if not 

 quite, as large as the eyes of the hinder row ; the front row is longer 

 than the middle one, and its eyes are separated by as nearly as 

 possible ecpial intervals. 



The legs are moderate in length and strength, their relative length 

 being, as nearly as I could ascertain, 4, 1, 2, 3 ; their colour is 

 yellow, faintly annulated and marked with dusky brown, and 

 furnished with hairs and spines. 



The falces are of a yellowish colour, clouded with yellow-brown 

 towards their extremities ; the maxillas are yellow, and the labium 



