Argiope, or Megathyris. 



Fig. 



20. T. caput-serpentis, Linn. (Anomia.) — A. and T. retusa,pubescens, 



costata, and aurita. — Oban, Skye, etc., 20 to 50 fath., Mr. 



21. A. cistellula, S. Wood. {Terebratula.) — A. seminulum?, T. 



22. A. decollata, Chemn. — A. detmncata. —-Guernsey, R. 



23. A. seminulum, PMlippi. — Croulin, near Skye, Jeffreys, 



Crania. 



24. C. anomala, Muller. {Patella.) — Pat. Anomia, Discina, and Criqpus 



distorta, ostreoides, per sonata, and rostrata, — Zetland, Arran, 

 Lerwick, Cork, Mr. 





