IMPOETANT SCIENTIFIC WORKS 



A 



Title, and Index are then issued, for the use of 

 to keep the genera in separate Monographs, for 

 nience of reference. 



The following is a List of the Genera completed 

 any of wliich may be purchased separately :— 



The genera Miwex and Pleurotoma will be shortly completed. 



The Publishers intend to issue a proper Title and Index on the com- 

 pletion of each Family ; and propose that the entire work be ultimately 

 bound in seven volumes in the following order : — 



Vol. I. — Families. — Tnbicola, Pholadaria, Solenacea, Myaria, 

 Mactracea, LltJiophaga, Nymj^liacea. 



Vol. II Conchacea, Cardlacea, Arcacea, Tncjonacea, 



Naiades, CJiamacea. 



Vol. Ill Tridacnacea, Mi/tilacea, Avicidacea, Pecti- 



iiacea, Ostracea, BracJiiopoda, Dentaliacea, 

 Chitonacea, Fissnracea, Capulacea. 



Vol. IV Macrostomata, Tubispiracea, Bnllacea, Se))ii- 



phjUidiana, Aplysiana, Carinariacea, Li- 

 macinea, Colimacea. 



Vol. V Cyclostomacea, Auricidacea, Lymnceana, Me- 



lauiana, Peristomata, Nerilacea, lantldnm, 

 PUcacea, Tnrhinacea. 



Vol. VI Parasitica, Canalifem, Alata, Piirpurifera. 



Vol. VII Cohoiiclhita, Comohita, Pteropoda, Cepha- 

 lopoda. 



