222 



ARACHNOIDEA, 



CASE Cepheus vulgaris {Nic). — 21. Magnified sketch of ditto, copied from M. 

 XIII- Nicolet's figure. 



Very common everywhere near Paris. 



Genus Erem^us [KocH). 



Cephalothorax simple, without lamellar appendages ; tarsi with 

 three claws, heterodactyl. 



No. 2?. Erem^us tibialis (iVzV.).— 22. Magnified sketch of larval form of ditto, 

 after Nicolet's figure. 



The species of this genus are rare, 

 but are interesting from the form of the 

 larva, from their having concave backs 

 like Nothrus, and from their general 

 resemblance to Hoplophora. 



A species (E. lineatus, Thorell) has 

 been found in Spitzbergen. 



Larva nf Eremneu tibi ilis. 

 Copied from Nico.et's %ure. 



r.remaeus tibialis. 

 Copied from iNicolet's figure. 



Genus Hoplophora {Koch). 

 Cephalothorax articulated to the abdom^en, and folding upon 

 the body ; tarsi monodactyl. 



Nos. Hoplophora contractilis {Clap.), (Hoplophora nitens, Nic.\ Phthiracarus 

 "*%?• contractihs, Peytz.).—2Z, Magnified sketch of nymph ; 21 Ditto perfect 



