xlvi 



DIV. II. MOLLUSCA. 



CLASS I.— CEPHALOPODA {continued). 



Genus. Subgenus. 



in. Belemnites 

 IV. Actinocamax, Miller 



/ 1. Ammonites 



Example of Species. 



V. Ammonites, 5ri<o-. 



VI. Camerines,Z)V?<.g. 

 Nummulites, 

 Lam 



prop. 

 Lam. 



2. Ceratites, Haan 



3. Orbitulites, Lam. 



4. Scaphites, Sowerh. 



5. Baculites, Lam. 

 G. Hamites, Soiverb. 



, 7. Turrilites, Montf. 



1. Siderolithes, Lam. 



2. Helicostega 

 Hel. nautiloida 

 Hel. tiubinoida 

 Hel. ammonoida 



3. Stygostega 



4. Enallostega 



5. Agathistega 



Tliese genera, ivith their 

 subdivisions, are all fossil. 



CLASS II.— PTEROPODA. 



The feet, so to speak, or rather the organs of locomotion of this 

 class, have the appearance of wings or fins. It constitutes, like the 

 last, but one order. 



Genus. Subgenus. Example of Species. 



I. Clio, Lin Clio borealis, Lin. 



II. Cymbulia, Peron 



III. Pneumodermon, Cuv Pu. Peronii, Cuv. 



IV. Limacina, Cuv Clio helidna, Phips. ^ Gm. 



V. Hyalea, Lam Anomia trideutata, Forskal! 



f 1. Cleodora, prop. 

 \ 2. Creseis 



VI. Cleodora, Peron. < 3. Cuvierics 



J 4. Psyche 

 (. 5. Eurybia 



VII. Pyrgo Defrance c Fossil 



