Families, Genera and Species of BritisJi Spiders, etc. 



(ii.) Anterior centrals equal to 

 the posterior centrals. 

 Thoracic impression long, 

 deep, and longitudinal . . Mangara Cb. 



1 8. Fam. Thomisidak. 



A. Clypeus inclined, as wide as ocular area. 

 Lateral eyes on anterior lace of a common 



conical tubercle Thomisiis Walck. 



B. Clypeus vertical, not .so wide as ocular area. 

 I. Central eyes forming a group as wide 



or wider than long. Caput obtuse, but 

 not produced. Lateral eyes on low 

 obtuse tubercles. 



1. Posterior eyes equal. Anterior eyes 



nearly equal, equidistant, and in a 



Hne strongly curved forward. 



Tubercles merging into each other . . iMisnniciui Sin-.. 



2. Laterals of posterior eyes larger than 



the centrals. Anterior row straight 

 or nearly so, centrals smaller than 



the laterals. Tubercles separate . . Xysticiis C. I,. Koch. 

 IL Central eyes forming a group longer 

 than wide. 



1. Posterior ej-es \ery strongh- cur\ed 



forward, nearly forming a semi- 

 circle, centrals much closer to each 

 other than to' laterals. Tubercles 

 well separated Oxvptilo Sim. 



2. Posterior eyes equidistant, slightly 



cur\ed forward. 



[a] Anterior eyes strongly curved 

 forward. Lateral eyes on the 

 side of a very obtuse oblique 

 angular projection of the caput . . Pistius Sim 



{b) Anterior row of eyes nearly straight. 

 Lateral eyes on separate, verv ob- 

 tuse, round tubercles, the anterior 

 ones being \ery strong . . . . Dioea Thor. 



19. Fam. Philodromidae. 



A. Cephalothorax a little longer than wide. 



Legs IV. longest Tlianatus C. L. Kocii. 



B. Cephalothorax as long or longer than 

 wide. Legs II. longest. 



I. Cephalothorax as long as wide. Posterior 



eyes equidistant or nearly so . . . . Phi/oJyouiiis Walrk. 



II. Cephalothorax much longer than wide. 



Posterior central eyes much closer 



to each other than to laterals . . . . TibcUiis Sim. 



20. Fam. Spar.\ssidae. 



A. Central eyes forming a group much longer 



than wide. Clypeus low. IMaxillae straight Micrommata Latr. 



21. Fam. Oxyopidae. 



Sufficiently characterised by the arrangement 

 of its eyes in four rows, those of the second 

 being the largest and those of the third the 

 most widely separated Oxvopes Latr. 



22. F.\m. Pisauridae. 



A. Central eye space longer than wide. 

 Anterior central eves smaller than the 



laterals ' Pisaura Sim. 



igto Sept. I. 



