38 NEW AND RARE BRITISH SPIDERS. 



Ldbium much broader than high, general form sub-triangular, 

 a prominent transverse ridge across the middle. Between the 

 extremities of the maxillae the tongue (lingua) rostrum (Sim.), is 

 very apparent, occupying the whole space between the maxillae, 

 the apex of the labium and the fangs at rest in their grooves, and 

 its outer surface is clothed thinly with hairs. 



Sternum large, a little longer than broad, of a regular shield 

 form, very convex, its anterior margin nearly straight, its pos- 

 terior extremity a little drawn out into a broad obtuse point, 

 the interval between the coxae of the fourth pair of legs being 

 nearly or quite equal to the length of the coxal joint. 



Abdomen oval, moderately convex above. Thinly covered with 

 short, somewhat bristly, slightly curved hairs. Spinners short, 

 inferiors and superiors equal in length, the former strongest. 

 Immediately in front of these is a transverse prominent rim, 

 probably covering the entrance to tracheal tubes. 



* Evansia merens, sp.n. 

 Adult male, length rather more than one line. 



The whole of the fore-part is of a somewhat pale brownish or 

 tawny yellow colour. The abdomen being of a rather duller darker 

 brown hue, with a slightly deeper-coloured longitudinal central 

 tapering stripe, and several pale angular lines or chevrons on the 

 hinder half of the upper side ; the legs are tinged with orange- 

 yellow. 



The cephalothorax has a few bristly hairs in a longitudinal 

 central line on the upper side of the thorax, and others within the 

 area of the four central eyes. 



Palpi moderately long, cubital joint short, rather larger at the 

 fore-end than behind. Radial joint much broader and stronger, its 

 fore-extremity produced into a long, broad, and obtusely ending 

 curved apophysis, directed rather outward, and on the inner- 



* I hare given this name to the genus in acknowledgment of the great 

 kindness and liberality experienced from Mr. Evans in respect to the many rare 

 and netr spiders he has met with. 



