Mr. J. Blackwall on new Species of Spiders. 203 



largest of the eight, and between these groups two round eyes 

 are placed transversely. The legs are long, moderately robust, 

 provided with hairs and spines, and are of a brownish-yellow 

 colour, the tibise, metatarsi, and tarsi having a tinge of red; the 

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

 the shortest ; each tarsus is terminated by three claws ; the two 

 superior ones are curved and pectinated, and the small inferior 

 one is inflected, and has a few fine teeth at its base : the palpi 

 are very long, and resemble the legs in colour ; the radial nearly 

 equals the humeral joint in length, and the short digital joint 

 is terminated by the oval red-brown palpal organs, which have 

 a prominent, spiral, dark red-brown spine at their extremity. 

 The abdomen is oviform, clothed with hairs, slightly convex above, 

 and projects a little over the base of the cephalothorax ; it is of 

 a yellowish-brown colour, the under part being the palest. 



The immature female is rather darker-coloured than the adult 

 male, and its legs are stronger and much shorter, but their 

 relative length is the same ; its palpi, which are comparatively 

 short and robust, have the dark-brown digital joint terminated 

 by a curved claw. 



It is very difficult to determine the position that the spiders of 

 the genus Filistata should occupy in a systematic arrangement 

 of the Araneidea. They possess few characteristics in common 

 with the Mygalidce, in which family they are usually placed by 

 arachnologists. By the disposition of the eyes, the relative 

 length of the legs, and the structure of the falces they are 

 allied to the spiders of the genus Artema ; but by their general 

 structure and economy they appear to have the nearest affinity 

 to the Drassidce, and particularly to certain species of the genus 

 Drassus. 



The adult male described above, and two immature females 

 were captured in the island of Jamaica. 



Family Lycosid^. 



Genus Lycosa, Latr. 



Lycosa ingens. 



Lycosa ingens, Blackw., Ann. & Mag. Nat. Hist. ser. 2. vol. xx. p. 284. 



The male is smaller than the female, but it resembles her in 



colour. Its palpi have a red-brown hue, and arc clothed with 



greyish-brown hairs, the digital joint, which is the darkest, 



having a few white hairs at its base ; the radial is larger than 



the cubital joint, and has some white hairs at its extremity; 



the digital joint is of an oblong-oval figure, slightly convex 



above, compact at the extremity, which is provided with several 



strong spines, and has a concavity at its base, on the underside, 



14* 



