Families, Genera and Species of British Spiders, etc. 237 



Fam. Drassid.e. 



A. Fang groove with a raised toothed keel 

 on inner edge. Posterior row of eyes 

 curved strongly forward and the anterior 

 row a little backwards 



B. Fang groove without this keel, hut with 

 isolated teeth. Posterior row of eyes 

 curved slightly backwards or straight. 



I. Palpus inserted much below the middle 



of the maxillae, which are almost 

 straight externally, and very little 

 inclined to the labium. Fang groove 

 very ol)lique, with three unequal teeth 

 on outer edge, and two on inner edge 



II. Palpus inserted at or above the middle 



of the maxillae, w'hich are convex ex- 

 ternally, and inclined to the labium. 

 Fang groove almost transverse (exc. 

 Scotophceiis), without teeth, or only- 

 small ones. 



1. Posterior row of eyes not or hardly 



longer than the anterior row . . 



2. Posterior row considerably longer 



than the anterior row. 



(a) Central anterior eyes much larger 



than the other eyes 



(b) Central anterior eyes not larger 



than the other eyes 



Fam. Clubignid^e. 



A. Tibia^ and metatarsi of legs I. and II. with 

 two rows of long spines beneath. Cephalo- 

 thorax ^\^tl^ a longitudinal impression. 

 Labium as long or a little longer than wide. 



I. Falces with a very strong spine, in front. 



Clypeus wider than an anterior eye . . 



II. Falces without such spine. Clypeus not 



wider than an anterior eye. 



1. Posterior row of eyes curved forward, 



and much wider than the anterior row 



(a) This curve very great 



(b) This curve slight 



2. Posterior eyes curved strongly back- 



wards, and slightly wider than the 

 anterior row 



B. Tibiae and metatarsi I. and II. without 



rows of spines beneath. Labium much 

 longer than wide. 



I. Eyes in two almost concentric rows, 



convexity backwards, Cephalothorax 

 without longitudinal impression. Bodv 

 with brilliant metallic scales 



II. Posterior eyes straight or nearly so. 



Body without metallic scales. 



1. Cephalothorax with a longitudinal 



impression. Legs short and spinose. 

 Legs IV. longest 



2. Cephalothorax without longitudinal 



impression. Legs much longer and 

 much less spinose. Legs I. longest 



Gnaphosa Latr. 



Drassus Walck. 



Piosthesima L. Koch. 



Scotophcetis Sim.* 

 Pheeocedus Sim. 



Alicariosoma Sim. 



Zora C. L. Koch. 

 Liocranuni L. Koch. 



Agvoeca Westr. 



Micaria C. L. Koch. 



Clubioiia Latr. 

 Chiracaiithiiim C.L.Koch 



* Drassus bhickivallii Thor. — B.I.S. 



igio June i. 



