453 Ml*. J. Blackwall on new Species of Spiders 



armed witli teetli on the inner surface ; the maxillse are straight, 

 enlarged at the extremity, which is rounded on the outer side 

 and obliquely truncated on the inner side, where it is supplied 

 with long hairs ; the lip is short, broad, and somewhat quadrate, 

 but rounded on the sides ; the sternum has a broad oval form, 

 with small eminences on the sides, opposite to the legs. These 

 parts are of a dark-brown colour, the falces, which are much 

 the darkest, being supplied with red hairs at the base, in front. 

 The legs are* long, robust, provided with brownish-yellow hairs 

 and strong sessile spines, and are of a red-brown colour; the 

 fii'st pair is the longest, then the fourth, and the third pair is 

 the shortest ; the metatarsi and tarsi have brown hair-like papillae 

 on their inferior surface, and the latter are terminated by two 

 curved claws, pectinated at their base. The palpi are long, 

 and rather lighter-coloured than the legs, with the exception of 

 the digital joint, which has a brown hue. The abdomen is ovi- 

 form, densely covered with brownish-yellow hairs, convex above, 

 and projects a little over the base of the cephalothorax ; a series 

 of broad, curved, angular lines of a brown colour, having their 

 convex sides towards each other and their vertices directed for- 

 wards, extends along the middle of the upper part; and on each 

 side of it there is a row of four depressed dark- brown spots: 

 the sexual organs, which are well developed, and of a red- brown 

 colour, have a large process directed backwards from their an- 

 terior margin, whose extremity is dilated. 



This large Ctenus was the only individual of the species in- 

 cluded in the collection. 



Genus Sphasus, Walck. 

 Sphasus pulchellus, n. sip. 



Length of the female | of an inch; length of the cephalo- 

 thorax -pV> breadth -^ ; breadth of the abdomen -^\ ; length of 

 an anterior leg -f ; length of a leg of the third pair -^. 



The abdomen is oviform, somewhat pointed at the spinners, 

 very convex above, and projects over the base of the cephalo- 

 thorax ; it is clothed with adpressed hairs, and is of a red-brown 

 colour mingled with yellowish white ; the under part, which is 

 of a yellowish-white hue, has a dark-brown band extending 

 along the middle; the sexual organs are moderately developed, 

 with a longitudinal septum in the middle; they are of a dark 

 red-brown colour, the posterior margin being much the palest, 

 and that of the branchial opercula is brown. The eyes are dis- 

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

 frontal margin; the four posterior ones form a greatly curved 

 transverse row, whose convexity is directed upwards and some- 

 what backwards, and the other four describe a trapezoid whose 



