426 Mr. J. Blackwall on newly discovered Spiders 



black lateral margins. The falces ai*e powerful, conical, vertical, 

 and armed with teeth on the inner surface ; the maxillse are 

 strong, convex on the outer side, obliquely truncated at the ex- 

 tremity on the inner side, and curved towards the lip, which is 

 quadrate; the sternum is heart-shaped and glossy, with small 

 prominences on the sides opposite to the legs. These parts have 

 a reddish-brown hue, the falces being the darkest, and the ster- 

 num much the palest. The legs are long, robust, provided with 

 hairs and sessile spines, and are of a yellowish-brown colour; 

 the fourth pair is the longest, then the first, and the third pair 

 is the shortest ; each tarsus is terminated by two curved minutely 

 pectinated claws, below which there is a small scopula. The 

 palpi have a red-brown hue, the radial and digital joints being 

 much the darkest ; the radial is larger than the cubital joint, 

 and projects three apophyses from its extremity on the outer 

 side ; the superior one is slightly curved and pointed, the inter- 

 mediate one is large and crescent-shaped, and the inferior one 

 has a slender process near its termination, which is abruptly 

 curved and pointed at its extremity; the digital joint is of an 

 elongated-oval form, convex and hairy externally, concave within, 

 comprising the palpal organs, which are moderately developed, 

 not very complicated in structure, with a strong curved process 

 at their extremity, which has a small prominent pointed process 

 near its base, and are of a dark reddish-brown colour. The 

 abdomen is oviform, convex above, hairy, with a large dull 

 yellow band extending from its anterior extremity along the 

 middle of the upper part, more than a third of its length ; a 

 large dark brown spot occurs in the middle of the posterior ex- 

 tremity of this band, which is the broadest and trifid, and on 

 each side of the intermediate prolongation, which is the narrowest 

 and most elongated, there is a series of dark brown spots ; these 

 spots converge, and become confluent above the spinners, where 

 they form short transverse bars ; the sides are spotted and 

 streaked with dark brown, and the under part, spinners, and 

 branchial opercula have a pale yellowish-brown hue, the last 

 being the palest. 



After the description of this species was made, an adult male 

 was received from Mr. Eyton Williams, who captured it in 

 Pernambuco. 



Genus Clubiona, Latr. 

 Clubiona subflava. 



Length of the female T 3 ff ths of an inch ; length of the cephalo- 

 thorax ^ ; breadth ^ ; breadth of the abdomen ^ ; length of an 

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



The cephalothorax is compressed before, rounded on the sides, 



