466 Mr. J. Blackwall on new Species of Spiders 



row behind the eyes, and is densely clothed with hoary hairs; 

 the falces are short, very powerful, subconical, vertical, and 

 armed with teeth on the inner surface ; the maxillae are short, 

 strong, straight, and greatly enlarged and rounded at the extre- 

 mity ; the lip is semicircular ; and the sternum is heart-shaped, 

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

 parts are of a brownish-black colour, the base and lateral mar- 

 gins of the cephalothorax being tinged with red. The legs are 

 moderately long and robust, the genua, tibiae, and' metatarsi 

 being somewhat depressed ; they have a very dark brown hue, 

 are provided with hoary hairs on the upper surface, and have a 

 patch [of white hairs at the base of the tibiae, and at the base 

 and extremity of the metatarsi on the under side; the fourth 

 pair, which is the longest, very slightly surpasses the first pair, 

 and the third pair is the shortest ; the tarsi are terminated by 

 claws of the usual number and structure. The palpi are rather 

 short, somewhat depressed, of a very dark brown hue, provided 

 with hoary hairs intermixed with some of a brownish-red colour 

 on the upper surface, and have a curved, pectinated claw at their 

 extremity. The abdomen is circular, without spines, truncated 

 in front, moderately convex above, and projects greatly over the 

 base of the cephalothorax; the upper part is of a brownish- 

 yellow colour; three conspicuous, depressed, brown spots form 

 a row on each side of the medial line, and numerous smaller 

 depressed spots of the same hue occur in front and on the sides; 

 four conical tubercles form a curved row on each side of the 

 anterior part, the anterior one being much the smallest ; three 

 other tubercles form a transverse row between the posterior ones 

 of the two curved rows; two others are placed wide apart on 

 the posterior half, and four more, nearly describing a square, 

 are situated above the spinners ; the sides and front are paler 

 than the upper part, and are densely clothed with hoary hairs ; 

 the under part has a brown hue, the sexual organs and spinners 

 being the darkest, and the branchial opercula the palest, and 

 there is a transverse pale-buff band immediately behind the 

 sexual organs, which are well developed, with a convex protube- 

 rance on each side, and between them a fine, pointed process 

 connected with their anterior margin. 



The collection contained a single adult female of this fine 

 Eurysoma, which is very closely allied to the Epeira imperialis 

 of Walckenaer, ' Hist. Nat. des Insect. Apt.' tom. ii. p. 147 

 {Eurysoma sexcuspidata, Koch, Uebers. des Arachn. Syst., fiinftes 

 Heft, p. 10), but differs from it in various particulars, and espe- 

 cially in the number and disposition of the tubercles on the 

 abdomen. 



