indigenous to the Salvages. 177 



the design formed by their distribution, and also in the relative 

 length and proportions of its legs, that the description of one 

 might well serve for that of the other, were it not for the re- 

 markable difference in the structure of their spinners, Drassus 

 Bewickii having the superior pair of those organs very long, 

 cyhndrical, and triarticulate, with the spinning-tubes distributed 

 on the extremity of the short terminal joint ; the extraordinary 

 length of the middle joint of these spinners constitutes an im- 

 portant and conspicuous character, by which it may be readily 

 distinguished, not only from Drassus Paivani, but also from 

 every other known species of the genus. 



This and the preceding species belong to Walckenaer's family 

 LithophiLp, of the genus Drassus. There were eight specimens 

 of this spider in the collection, all of which were either adult or 

 immature females. 



I have conferred on this remarkable species the name of Mr. 

 Bewicke, a zealous and careful observer of nature, who, having 

 collected numerous specimens of spiders in the island of Madeira, 

 transmitted them to Mr. Wollaston, by whom they were kindly 

 placed at my disposal. In describing the new species comprised 

 in that collection in the 'Annals and Mag. of Nat. Hist.,' third 

 series, vol. ix. page 370, my omission to acknowledge the obliga- 

 tion 1 was under to those gentlemen must be attributed to my 

 not having received information of the circumstance at that 

 time. 



Family AoBLENiDiB. 



Genus Teoenaria, Walck. 



Tegenaria dubia. 



Length of an immature female (not including the spinners) 

 ■jJ^ths of an inchj length of the cephalothorax |; breadth J^; 

 breadth of the abdomen y\y ; length of an anterior leg ^' ; 

 length of a leg of the third pair |. 



The eyes are seated on black spots, and are disposed on the 

 anterior part of the cephalothorax in two transverse rows ; the 

 posterior row, which is rather the longer, is slightly cur\ed, with 

 its convexity directed backwards, and the anterior row is almost 

 straight ; the four intermediate eyes describe a trapezoid whose 

 shortest side is before, the two posterior ones being the largest 

 and the two anterior ones the smallest of the eight ; the eyes of 

 each lateral pair are placed obliquely on a tubercle, but are not 

 in contact. The cephalothorax is convex, glossy, compressed 

 before, and rounded on the sides, which are depressed, and 

 marked with furrows converging towards a narrow, oblong in- 

 dentation in the medial line of the posterior region ; it has a 

 brownish-yellow hue, with a broad, irregular, faint soot-coloured 



Ann. i^ Mag. N. Hist. Ser.3. Vol. ids. 12 



