160 PEOF. J. W. JFDD ON THE OLIGOCENE 



a Cerithium duplex, Bow. 



ventricosum, Bow. 



contiguum, Desk. ? 



multispiratum, Besh. 



parvulum, Edw. MS. 



cavatum, Edw. MS. 



speculatum, Edw. MS. 



Cojcum Morrisii, Edw. MS. 



Lacuna clausa, Ed.w. MS. 



Eissoa carinata, Edw. MS. 

 a , var. denticulata, Edw. MS. 



ditropis, Edw. MS. 



Hydrobia polita, Edw. MS. 

 a, X anceps, B. Wood. 



Dubinsoni, Boidllot, var. rimata, Edw, 



subangulata, Edw. MS. 



a, X Nematura parvula, Desk. 



lubricella, A. Brmm. 



Trochus pictus, Edw. MS. 



Adeorbis aestuarina, Edw. MS. 



aperta, Edw. MS. 



a Nerita aperta, Sow. 



a asstuarina, Edw. MS. 



a ISTeritina coneava, Sow. 



neritopsidea, Edw. MS. 



a Act£eon limneiformis, Sandb. 



Eingicula ringens, Lam. 

 a Bulla sestuarina, Edw. MS. 

 a Lamarckii, Besh. 



tenuicula, Edw. MS. 



X Anomia tenuistriata, Besh. 

 a Ostrea velata, S. Wood. 

 a Avicula media. Sow. 

 a Dreissena unguiculus, Sandb. 

 a, X Mytilus affinis, Sow. 



a, X strigillatus, S. Wood. 



X Modiola elegans, Sow. 



, var. elegantior, S. Wood. 



a Area Igevigata, Caill. 

 a, X Trigonocoelia deltoid ea, Lam. 

 a Nuoula headonensis, Forbes. 



tmnescens, Edw. MS. 



ampla, Edw. MS. 



X lissa, Edw. MS. 



a nudata, S. Wood. 



a Cardita oblonga, Sow., var. transversa, Edw, MS. 



, var. serratina, Edw. MS. 



X Lucina inflata, Edw. MS. 



«, X obesa, Edw. MS. 



X coneava, Befr. 



a pulvinata, Edw. MS. 



X gibbosula, Lam. 



pratensis, Edw. MS. 



a Strigilla colvellensis, Edw. MS. 



pulchella, Agass. 



a, X Cardium obliquum, Lam. 

 a, X Scintilla angusta, S. Wood. 



nitidulum, S. Wood. 



a, X Cytherea incrassata, Sow. 



partim sulcata, Edw. MS. 



a suborbicularis, Edw. MS. 



