NEW AND RARE BRITISH SPIDERS. 37 



Gen. nov. EVANSIA. 



Cephalothorax, moderate in general convexity ; hinder slope 

 long ; caput distinctly elevated, in a blunt conical form, lateral 

 marginal indentations at caput scarcely defined ; height of 

 clypeus distinctly exceeds half that of the facial space, and its 

 profile follows on the slope of the fore part of the ocular area, its 

 lower margin well rounded. A little way behind each lateral pair 

 of eyes is a large oval cavity or indentation, its pointed end 

 directed backwards. 



Eyes small, sub-equal, on small black spots, occupying the 

 whole fore side of the upper part of the caput, in two transverse 

 rows, the hinder row almost semi-circularly curved, the convexity 

 of the curve directed backwards, its eyes equal in size or nearly 

 so and equi-distant from each other, the laterals perhaps slightly 

 the smallest, the intervals nearly equal to two diameters. The 

 anterior row is slightly curved, its convexity directed backwards, 

 laterals contiguous and slightly obliquely placed. The fore- 

 laterals are very slightly larger than those of the hinder row ; 

 fore-centrals smallest, about half the size of the fore-laterals, 

 dark grey, the rest pearly white ; fore-centrals less than half a 

 diameter apart. The four central eyes form a quadrangle a little 

 longer than broad ; its fore side much the shortest. 



Ltgs moderate in length, slender, sub-equal, i, 4, 2, 3, 

 furnished with coarse, rather bristly hairs ; a single short nearly 

 erect spine towards the hinder extremity of the tibiae of the first 

 and second pairs ; beneath the femora the hairs are somewhat 

 spiniferous and form two longitudinal parallel rows. Tarsal 

 claws on a claw-joint, superior claws slender, pectinations very 

 minute near the middle, almost sessile ; inferior claw very small ; 

 metatarsi of 4th pair much shorter than the tarsi. 



Fakes moderately long and strong, straight and tapering, 

 about equal to the facial space in length ; the fore-margin of 

 the fang-grooves has a close set row of 6 7 minute teeth. 



Maxilla short, strong, greatly inclined to the labium, very 

 slightly curved, obliquely truncate at extremities, which do not 

 nearly meet over the labium. 



