CONCHOLOGY. 



CONTENTS. 



LESSON I. 



General Considerations. Mollusca in general Organization Nervous 

 System General Form Skin Mantle Shell Formation of Shell 

 Digestive Apparatus Circulation of the Blood Respiration Senses 

 Eggs Classification. 



LESSON II. 



Class of Cephalopoda. General Form Respiration Circulation Organa 

 of Digestion Cephalic Cartilage Organs of Locomotion Organs of 

 the Senses Nervous System Habits Division into two Families. 



Family of Cephalopoda Dibranchiata. Octopus Vulgaris, or Poulpe Argo- 

 naut Calmaries Cuttle-fishes. 



Family of Cephalopoda Tetrabranchiata. Nautilus Ammonites Belem 

 nites Foraminifera. 



LESSON III. 



Class of Gasteropoda. General Conformation Classification. 



Order of Gasteropoda Pulmonea. Organization Division into two Families. 



Family of Terrestrial Pulmonea. Limax Vaginulus Helix Bulimus 



Pupa Chondrus Clausilia Achatina. 

 Family of Aquatic Pulmonea. Onchidium Planorbis Limnaea Physa 



Auricula. 



Order of Gasteropoda Pectinibranchiata. Organization Classification. 

 Family of Trochoides. Trochus Turbo Delphmula Turritella Cyclo- 



stoma Valvata Paludina Littorina Monodon Phasianella Am. 



pullaria Janthina Nerita. 



LESSON IV. 



Family of Buccinoides. Buccinum Buccinum properly so called Harpa 

 Purpura Cassis Cerithium Murex Strombus Voluta Ovula 

 Cyprsea Conus. 



Family of Pectinibranchiata Capuloida. Pileopsis Hipponyx Crepidula 

 Calyptraea Siphonaria Sigaretus. 



Order of Gasteropoda Tubulibranchiata. 



Order of Gasteropoda Scutibranchiata. Haliotis Fissurella Emarginula. 



