86 ON SOME NEW AND RARE BRITISH ARACHNIDA. 



part of the caput, and most on the clypeus and ocular area. 

 The profile line from the fore-central eyes to the hinder margin 

 forms a pretty nearly even-curved line ; height of clypeus nearly 

 about half that of the facial space. 



Eyes in two very nearly equal and nearly equally-curved 

 transverse rows. The convexity of the slight curve of the hinder 

 row directed backwards, that of the front row forwards. The 

 fore-laterals appear to be rather the largest. The hind-centrals 

 are a little further apart than from the hind-laterals, and the 

 fore-centrals are separated by a diameter's interval from each 

 other, and rather less from the fore-laterals. Those of each 

 lateral pair are seated a little obliquely on a slight tubercular 

 eminence. The four central eyes form a square, whose fore-side 

 is shortest. 



Legs moderately strong, rather short, pale yellow, suffused 

 with darker brown on the upper part of the femora and on the 

 tibiae of the first and second pairs ; these are furnished with hairs 

 and a single short slender bristle near the fore-extremity on the 

 upper side of the tibiae, another near the hinder end, and one on 

 each of the genual joints. 



Fakes rather long, strong, and slightly divergent ; colour like 

 that of the cephalothorax, strongly marked in front, longi- 

 tudinally, with deep blackish brown. 



Maxilla, labium, and sternum deep black-brown. 



Abdomen black, very thinly furnished with short hairs ; 

 spiracular plates pale yellow-whitish ; genital aperture simple, 

 but very distinct and characteristic. 



Received from Mr. W. Falconer, by whom it was found near 

 Leeds. 



Gen. nov. MARO (nom. propr.). 



Cephalothorax oval, longer than broad, obtuse in front ; profile 

 line regularly convex ; marginal lateral impression at caput very 

 slight, broadly, but not deeply excavated in hinder slope. 



Eyes rather large and grouped closely together in form of a 

 regular semi-circle ; lateral and hind-centrals of nearly uniform 



