Arachnida. 



7951 



Blackwall's work on £ British Spiders,' Arachnology will obtain her 

 share of students. No doubt the want of a work on the subject in 

 " the mother tongue " is, among others, one chief hindrance to the 

 study. 



The asterisk affixed to the name of any spider in the above list 

 denotes that some notice of such spider has been given in one of the 

 previous lists (see Zool. 6493, &c). 



O. Pickard-Cambridge. 



Bloxworth, Dorset, 

 February 15, 1862. 



Descriptions of Ten New Species of British Spiders. 

 By the Rev. O. Pickard-Cambridge, M.A. 



Tribe Octonoculina. Family Thomisid^e. 

 Thomisus simplex. 



General colour pale murky yellowish brown. Cephalothorax mottled 

 and marked on the sides and front with brownish black. Abdo- 

 men marked on the upper side with several transverse dark streaks 

 on the hinder half, and a longitudinal fusiform band, bordered 

 with a fine blackish line, reaches nearly two-thirds of the length 

 towards the spinners. In adult males the femoral joints of the 

 legs and the palpi, except the humeral joint, suffused with dark 

 sooty brown. Radial joint of the palpi has a strong projection 

 on the outer side, ending with a long, nearly straight, fine, pointed, 

 black spine, which runs alongside of the digital joint. 



Adult male. Length, 1-eighth of an iuch ; length of cephalothorax, 

 1 -sixteenth. Breadth, 1-sixteenth. Relative length of legs, 

 2, 1, 4, 3. 



Cephalothorax compressed in front, abruptly depressed behind, 

 thinly clothed with short hairs, and some bristles project from 

 the frontal margin. Its colour is pale yellowish brown, in strongly 

 marked males tinged with reddish brown, especially towards the 

 front, and in such specimens the pointed spade-shaped mark so 

 characteristic of the genus is distinctly visible, and contains 

 generally two longitudinal parallel spots of dark brownish black, 

 with which colour the sides and the region of the eyes are more 

 more or less mottled and marked. 



Eyes in two almost concentric, curved rows, the front row being the 

 shortest, the curves directed forwards. The lateral eyes of the 



