new and obscure British Spiders. 397 



EXPLANATION OF THE PLATES. 

 Plate XX. 



Fir/. \. Lophocarenum Mengei, Sim. 



a. Profile of male. 



b. Cephalic eminence from above. 



c. Left palpus of male. 



d. Epig>Tie of female. 



Fig. 2. Leptgphantes plumiger, F. Cb. Palpu3 of male. 



a. Falciform process. 



b. Lower branch of lateral styliim, enlarged. 



c. LTpper branch of ditto, enlarged. 



Fig. 3. Zilla atrica. Epigyne of female from above. 

 Fig. 4. Leptyphantes ericceus, Blk. 



a. Left palpus of male: (1) falciform process; (2) lateral stylum ; 



(3) apical spines, 



b. Epigyne of female from above. 



c. Lateral view of ditto. 

 Fig. 5. Tmeticus simplex, F. Cb. 



A. Profile of female, highly magnified. 



B. Caput and falces of male from in front. 



C. Left falx of female. 



D. Epigyne of female. 



E. Palpus of male from above : («) outer spur of radial joint. 



F. Palpus from outer side : («) spur of radial joint ; (Jb) falciform 



process of palpal organs, very small in this species j (c) spirali- 

 form membrane. 



G. Left palpus from above. 



Plate XXI. 



Fig. 6. Bathyphantes gracilis, Blk. 



a. Left palpus of male from the outside : (1) falciform process ; 



(2) spiral spine ; (3) lateral coil. 



b. Ditto, exhibiting apex of palpal organs: (1) spiral spine; 



(2) termination of lateral coil. 



c. Epigyne of female. 



d. Lateral view. 



Fig. 7. Bathyphantes parvulus, Wstr. 



a. Left palpu3 of male from the outside : («) falciform process ; 



(b) spiral spine. 



b. Epigyne of female from above. 

 Fig. 8. Zilla x-notata, Clerck. 



a. Right palpus of male. 



h. Epigyne of female from above. 

 Fig. 9. Zilla atrica, C. K. 



a. Left palpus of male. 

 Fig. 10. Amawobius similis, Blk. 



a. Female ; legs and palpi truncated. 



h. Epigynal area from above. 



c. Epigyual area — taken from a less mature specimen. 

 Fig. 11. Amaurobius fenesf ralis, Stroem. 



a. Female ; legs and palpi truncated. 



b. Epigynal area from above. 



c. Female and cocoon within silken nest constructed beneath a stone. 



[The above figures are all nmru nr less highly (enlarged.] 



