42 CONTENTS. 



Melania varicosa (Ward), Bulimus vermetus (Ant.), Mel. 

 iuflata, M. curta, Physa concolor, Anculosa affinis. 



No. 4, pp. IT 32, pi. 610, Jan., 1842, with short charac- 

 ters on the cover, of Anculosa crassa, Melania aequalis, un- 

 cialis, symmetrica, bellacrenata, gracilisvelpulchella(Ant.), 

 approxima, intersita, Limnea vitrea, Physa globosa, Amni- 

 cola attenuata, pallida, galbana, sayana. Pal. carinata 

 (Val.) is changed to multicarinata, and carinata (Sw.) to 

 unicarinata. 



Sig. Kl 4, and 4 plates of PLANORBIS. 



No. 7, pp. 1 32, pi. 1 4, Jan. 1844, including Ancylus. 

 The cover has characters of Amnicola tenuipes (Couper), 

 and Melania substricta. 



Sig. LI 2, and 1 plate. INDEX, commenc- 

 ing with the word Acella. 



Title of 1845. 



Sig. El 3, and 1 plate of AMNICOLA. 



No. 8, June, 1845, including Ampullaria and Valvata. 



Sig. Fl 5, and 11 plates of PALUDINA. 



No. 1, pp. 1 16, pi. 1 5, July, 1840, with characters on 

 the cover of Anculosa littorina, Potamis californica, Cyclas 

 elevata, Clepsina scabra, Cercaria hyalocauda. 



No. 2, pp. 17 32, pi. 610, Jan., 1841, with characters 

 on the cover of Mel. rufula, costifera, Physa fontana, oscu- 

 lans, Ancylus parallelus, and Angitreuia proposed for Me- 

 lania armigera. 



