MANUAL OF THE MOLLUSCA. 



? Kingena (lima), Dav. Cretaceous, Europe, Guadaloiipe. 

 Valves spinulose ; loop trebly attached. 



Fig. 159. Ter. {Kingena) lima, (after Davidson.) 

 t, dental sockets ; j, cardinal process ; c, crura ; d, diverging processes of loop , r, re- 

 flected portion ; e, third attacliment of loop ; s, dorsal septum. 



? Ismenia (pectunculus), King. Coral rag, Europe. Valves 

 ornamented with corresponding ribs ; loop trebly attached. 



? WaUonia (Valenciennei), Dav., New Zealand. Perhaps 

 the fry of Ter. ruhicunda, with the reflected part of the loop 

 wanting. 



Zellania (Davidsoni), Moore, 1855. {Etymology, ZeUa, a lady's 

 name ?) Shell minute, orthi-form ; texture fibrous ; hinge- 

 area short, foramen angular, encroaching on both valves; interior 

 of dorsal valve as in Thecidium, with a single central septum 

 and broad margin. Fossil. Lias — Great Oolite. 3 species. 

 Britain. 



Fig. 160. Argiope decollata. ^ Fig. 161. A. Neapolitana, Sc* -f- 



Argiope, Eudes Deslongchamps. 

 Etymology, Argiope, a nymph. 

 Synonym, Megathyris, D'Orbigny. 

 Type, A. decollata, PL XV., Fig. 10. Fig. 160, 162. 

 Shell minute, transversely oblong or semi-ovate, smooth or 



* Intei'ior of dorsal valves magnified, from the originals in Coll. Davidson. 



