284 Mr. J. Blackwall on new species of Lycosa. 



tuft of yellowish hairs ; the under is paler than the upper part, 

 except in the medial line, which has a brown hue, and that of 

 the branchial opercula is brownish-yellow. 



The male of this handsome species does not appear to be 

 known to arachnologists. Having had an opportunity of ex- 

 amining adult individuals of both sexes, found under stones in 

 the island of Porto Santo, by James Yate Johnson, Esq., I am 

 enabled to supply the deficiency. M. Walckenaer has given a 

 very brief description of the female, from a specimen in the col- 

 lection of M. Guerin, but states erroneously that the legs are 

 not provided with spines. 



Lycosa ingens. 



Length of the female 1 inch and ygths j length of the cephalo- 

 thorax -^^ ; breadth -^\ ; breadth of the abdomen | ; length of a 

 posterior leg lyxj ; length of a leg of the third pair Vf, 



The legs are long, robust, densely clothed with hairs, and pro- 

 vided with long, sessile spines ; they are of a brown-black colour, 

 with white annuli and spots ; one of the latter occurs on each side 

 of the extremity of the tibise, and another at the extremity of 

 the metatarsi, on the upper part ; the fourth pair is the longest, 

 then the first, and the third pair is the shortest ; each tarsus 

 is terminated by three claws ; the two superior ones are curved 

 and pectinated, and the inferior one is very small, and inflected 

 at its base ; the metatarsi and tarsi are provided on the under 

 side with hair-like papillae, constituting a climbing apparatus. 

 The palpi are short, and are terminated by a curved, pectinated 

 claw ; they resemble the legs in colour, but the radial and digi- 

 tal joints have neither annuli nor spots. The cephalo-thorax is 

 compressed before, rounded on the sides, convex, thickly clothed 

 with short hairs, and has a slight longitudinal indentation in 

 the medial line ; it is of a dark brownish-grey colour, with an 

 irregular greyish-white band extending along each lateral mar- 

 gin, and another of the same hue along the middle, whose ante- 

 rior part is the broadest, of an elongated oval form, and com- 

 prises two parallel, curved, brownish-grey, longitudinal lines, 

 having their concavity directed towards each other. The four 

 small anterior eyes are nearly equal in size, and form a straight, 

 transverse row near the frontal margin of the cephalo-thorax. 

 The falces are powerful, conical, vertical, convex at the base, 

 armed with a strong, curved fang at the extremity, and a few 

 teeth on the inner surface : the maxillse are straight, and rounded 

 at the extremity, which is enlarged and truncated obliquely at 

 its inner surface : the lip is broader in the middle than either at 

 the base or the extremity, which latter is truncated and hollowed ; 



