THE CANADIAN ENTOMOLOGIST. 91 



I Two eyes in anterior row i8 



' ( Four eyes in anterior row ...19 



jg ( A high clypeus Oxyopidce 



\ Almost no clypeus Podophthaimid<x. 



r Eyes of second row immensely larger than those of the third row... 



19 -j Dinopidce 



(_ Eyes of second row not much larger than those of third vo-w . Lycosidce 



\ With calamistrum and cribellum, three claws to tarsi. 21 



I Without calamistrum and cribellum 22 



( S. E. not as far apart as M. E., clypeus high Didynidce 



\ S. E. as far or farther apart than M. E., clypeus low Uloboridx 



f Tarsi with two claws 2-1 



22 ■(  • • " • o 



\ Tarsi with three claws .27 



f Second pair of legs longer than the fourth, all eyes similar, cephalo- 



! thorax somewhat roundish. 24 



^ \ Second pair of legs not longer than the fourth, A. M. E. diurnal, 

 [ rest nocturnal, cephalothorax more elongate 25 



( A. M. E. very close to clypeal margin, clypeus low Sparassidcz 



^ ) A. M. E. some distance from margin, clypeus higher Thomisidce 



Mandibles very large, trochanters long Prodidomidce 



^^ ' Mandibles and trochanters normal , 26 



{ 



Maxillae with a concavity or furrow Drassidce 



1 



^ Maxillae convex ClubionidcB 



I But one pair of spinnerets Palpimanidce 



' \ Three pairs of spinnerets 28 



o j Clypeus wider than ocular area 29 



I Clypeus narrower than ocular area 30 



( Lower spinnerets longer than upper, two-jointed Eiiyoidce. 



^ \ All spinnerets equally short Theridiida 



( Superior pair of spinnerets longer than the others, two-jointed, A. M. 



) E. diurnal, S. E. separated, not far from M. E AgakfiidcB 



^° \ All spinnerets short, S. E. often touching, often far from M. E. 



* 



. Epeiridce 



j Legs very long and slender Hypochilidce 



^ \ Legs stout and shorter ; 32 



I Two pairs of lung slits 33 



^ ( But one pair of lung slits Catadysidce 



^ j Palpi arising from the side of maxillae Atypidce 



^•^ \ Palpi arising from the tip of the maxillae T/teraphosidre 



