captured in Rio Janeiro. 349 



specimens it contained, which were preserved in spirit, I have 

 selected the following species for description, under the impres- 

 sion that they will be found new to arachnologists. 



Tribe Octonocnlina. 



Family Lycosid.e. 



Genus Lycosa, Latr. 



Lycosa inornata. 



Length of the female § ths of an inch ; length of the cephalo- 

 thorax f\; breadth ~ v ; breadth of the abdomen J-; length of 

 a posterior leg ^y ; length of a leg of the third pair ^. 



The ccphalothorax is large, compressed before, rounded and 

 somewhat depressed on the sides, which are marked with furrows 

 converging towards a narrow longitudinal indentation in the 

 medial line ; it is densely clothed with short hairs, and of a dark- 

 brown colour, with broad yellowish-grey margins, and a band of 

 the same hue extending along the middle, whose anterior part is 

 the broadest and comprises a dark-brown line directed backwards 

 from each posterior eye. The four small anterior eyes form a 

 straight transverse row near the frontal margin of the cephalo- 

 thorax, and the two intermediate ones are larger than the lateral 

 ones. The fakes are powerful, conical, vertical, armed with 

 teeth on the inner surface, and of a brown-black colour, with 

 yellow-grey hairs in front. The maxilla; are enlarged at the 

 extremity, which is obliquely truncated on the inner side, and 

 are slightly curved towards the lip ; the latter organ is short, 

 and broader in the middle than at the base or apex, which is 

 truncated and hollowed. These parts have a reddish-brown hue, 

 that of their extremities being yellowish brown. The sternum 

 is oval and hairy, with minute prominences on the sides oppo- 

 site to the legs, and is of a yellowish-brown colour. The legs 

 are robust, provided with hairs and sessile spines, and of a 

 yellow-brown hue ; 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 small and inflected at its base ; the meta- 

 tarsi and tarsi are provided on the under side with hair-like 

 papilla? constituting a climbing apparatus. The palpi resemble 

 the legs in colour, and the digital joint, which is tinged with 

 brown, has a curved pectinated claw at its extremity. The ab- 

 domen is oviform, hairy, convex above, and projects over the 

 base of the cephalothorax ; the upper part is of a greyish-yellow 

 colour, and has a brownish-black spot on each side of its ante- 

 rior extremity; a pale-brown band, obscurely bordered with 

 black, extends from the anterior part along the middle, nearly 



