Mr. J. Blackwall on new Sjpecies of Sjnders. 409 



Adult and immature males of this singular Drassus were 

 captured in the Island of Teneriife. 



Genus Clotho, Walck. 

 Clotho Paivanij n. sp. 



Length of the female (not including the spinners) f of an 

 inch ; length of the cephalothorax -^^ breadth -^ ; breadth of 

 the abdomen |- ; length of an anterior leg -W ; length of a leg 

 of the third pair -^. 



The cephalothorax is reniform, convex, glossy, with a large 

 indentation in the medial line, and is of a dark -brown colour, 

 the margins being rather the palest. The eyes are disposed 

 on the anterior part of the cephalothorax, high above the frontal 

 margin ; three on each side describe a cm've whose convexity 

 is directed outwards, the posterior one being the smallest, and 

 two, situated transversely between the curves, are much the 

 largest of the eight. The falces are slender, subconical, and 

 vertical ; the maxillae are very convex near the base, depressed, 

 oval, and somewhat pointed at the extremity, and greatly in- 

 clined towards the lip, which is triangular and pointed at the 

 apex ; the sternum is flat and reniform. These parts are of a 

 dark-brown hue, the extremity of the falces and the apex of 

 the lip, which are the palest, having a tinge of red. The legs 

 are strong, hairy, nearly equal in length, the third pair being 

 slightly the shortest, and are somewhat paler than the cephalo- 

 thorax ; each tarsus is terminated by three claws ; the two 

 superior ones are curved and minutely pectinated, and the in- 

 ferior one is inflected near its base. The palpi, which are 

 robust and hairy, resemble the legs in colour ; they mask the 

 falces, and have a curved claw at their extremity. The abdo- 

 men is oviform, glossy, sparingly clothed with short hairs, 

 and projects over the base of the cephalothorax ; it is of a dull- 

 brown colour, the under part being the palest, and has an ob- 

 scure yellowish-white oval zone on the upper part, whose 

 inner margin projects a point on each side into the intermediate 

 brown space, near its middle ; the superior spinners are tri- 

 articulate, and have the spinning-tubes distributed on the in- 

 ferior sm-face of their long terminal joint ; they are directed 

 upwards, and are curved towards the anus, which is oval and 

 is encompassed by a dense fringe of long hairs, except at its 

 posterior extremity: the sexual organs are nearly circular, 

 and have a reddish-brown hue. 



The male is smaller than the female, and the colour of its 

 cephalothorax, falces, maxillae, lip, sternum, legs, and palpi is 

 yellowish-brown. The abdomen is of a dark-brown hue 



Ann, & Mag, N. Hist, Ser.4. Fo^.ii. 29 



