650 Mr. Blackwall's Descriptions of new Species of Spiders. 



robust and nearly straight, greatly resembling those of the LinypMce. 

 Lip semicircular and prominent at the extremity. These parts are of a 

 reddish brown colour, the sternum being rather the darkest, and the 

 mandibles, maxillae and lip the reddest. Eyes placed on black spots. 

 Legs and palpi reddish brown ; first and fourth pairs of legs the longest 

 and equal in length, third pair the shortest. Abdomen oviform, thinly 

 covered with hairs, convex above, projecting over the base of the cephalo- 

 thorax ; it is of a dull brown colour, obscurely mottled with darker 

 brown. A depressed, oval, flesh-coloured protuberance is connected 

 with the sexual organs. Plates of the spiracles yellowish white. 



The male, which is rather smaller than the female, has the cephalo- 

 thorax, legs, palpi, mandibles, maxillae and lip red, with a slight tinge 

 of brown ; moreover, the abdomen is darker coloured than that of the 

 female. The relative length of the legs, also, is different in the sexes, the 

 male having the first pair longer than the fourth. Third and fourth 

 joints of the palpi short, the latter being much the stronger and some- 

 what produced in front ; fifth joint of an irregular, oval form, having a 

 large lobe on the outer side ; it is convex and hairy externally, concave 

 within, comprising the palpal organs, which are prominent, highly deve- 

 loped, complicated in structure, exhibiting several strong, corneous pro- 

 cesses ; one of which, situated at the extremity, is curved, pointed and 

 enveloped in a semitransparent membrane, and a lai'ge one, at the upper 

 part, projects two branches, one directed upwards, extending nearly to 

 the articulation of the third and fourth joints, and the other directed 

 downwards ; both are pointed and curved outwards, an obtuse promi- 

 nence occurring near the base of the latter, within the curve : these 

 organs are of a reddish brown colour. The convex sides of the terminal 

 joints are directed towards each other. 



Adult specimens of this spider, which is very nearly allied to the LinypMce 

 by the structure of the mouth and the disposition and relative size of the eyes, 

 were discovered under stones at Crumpsall Hall, in October 1836. 



37. Neriene variegata. Cephalo-thorace flavescenti-brunneo, marginibus serie 

 macularum parvarum utrinque guttaque triangulari pone oculos nigris ; 



