620 



SYNOPSIS OF ANIMAL KINGDOM. 



B. BEACHIOPOBA. 



Tretenterata Crania, Discina, Lingula, Lingulella, Oholella, 



(or Inarticulata). Siphonotreta. 



Clistenterata 



(or Articulata). 



Teeebeatula (Lamp- shell), Rhtnchonella, 

 Teeebratella, Thecidium, Waldheimia, 

 Athf/ris, Atrypa, Chonetes, Leptmna, Ilagas, 

 Ortln's, Pejitamerns, Product us, Spirifera, 

 Strophomena, Terelrirostris. 



lamellibratichiata 

 (or Pelecypoda). 



Scaphopoda. 

 Polyplacophora. 

 Heteropoda. 

 Gasteropoda. 



a. Pulmogasteropoda. 



b. Branchiogastero- 



poda. 



Pteropoda. 

 Cephalopoda. 



a. Dibranchiata. 



b. Tetrabranchiata. 



2. MOLLUSCA. 



OsTEEA (Oystee), Pecteist (Scallop), Avicula, 

 Lima, Gryphcea, Inoceranms, Pterinea, Posi- 

 donomya. Mttilus (Mussel), CARDitrir 

 (Cockle), Arca, Ctprina, Leda, Mta, 

 ifucuLA, Pholadomya, Tellina, Trigonia, 

 TJnio, Anthracosia, Radiolites{ = Hippurites). 



Dentalium. 



Chiton, Ilelminihochiton. 



Atlanta, Bellerophon, Porcellia. 



Helix (Snail), Limax (Slug), Bulimus, Limn^a, 



Phtsa, Planoebis, Pupa. 

 BucciNUM (Whelk), Cype.i;a, Natica, Patella, 



Pleueotomaeia, Tueritella, Voluta, Emyn- 



phalus, Ilolopella, Ilurchisonia. 

 Htal^a, Conularia, TentacuUtes, Theca. 



Argonanta (Paper-nautilus), Sepia (Cuttle-fisli), 

 Spirilla, Belemnites, Belosepia, Geoteuthis. 



Nautilus, Ammonites, Ancyloceras, ^'Ceratites, 

 Clymenia, Goniatites, Lituites, Orthoceras, 

 Turnlites. \_Aptychus (or Trigo7ieUites), 

 regarded as the operculum of Ammonites.^ 



TI. PHARYNGOPNEUSTAL 8ERIE8. 



Hemichordata (or 

 Enteropneusta). 



Uroehordata (or 

 Tunicata). 



Balanoglossus. (No fossil forms.) 



Ascidium (Sea-squirt), Appendicularia, Botryllus, 

 Leptoclinum. (Eecently found in the Pliocene 

 deposits of St. Erth.) 



