ANIMALS. 



81 



CLASSIFICATION of the vakious GEOUPS constituting the Class PALLIOBRANCHIATA. 



SUB-CLASSES. 



OBDEES. 



FAMILIES. 



GENERA.' 



f Sarcicobrachia 



Helictopoda 



'^Lingulidse 

 OboUdse . 



Craniadse 



Discinidse . 



Calceolidse . 

 Davidsonidse 



Productidae . 



Strophomenidse 



\Sclerobrachia . ' 



Hypothyridae . 



Spiriferidae 



' Strigocephalidse 



Ancylopoda . Ancylohracliia .{ 



Terebratulidse 



Rhynchoridse 



Magasidse . 



Thecidseidse 

 Argiopidse . 



Lingula (unguis), Bruguiere; 



Obolus (ApolLinis), Eichwald. 



Crania (Egnabergensis), Retzius. 



Siphonotreta (unguiculata), De Verneuil. 



Criopus (turbinatus), Poli. 

 [■ Biscina (ostreoides), Lamarck. 

 < Orbiculoidea, A. d'Orbigny. 

 L Trematis (terminalis), Sharpe. 



Calceola (sandalina), Lamarck. 



Davidsonia(Verneuilia),BouchardChanteraux 

 r Prodxictus (Martini), J. Sowerby. 

 \ Strophalosia (excavata). King. 



Strophomena (rugosa), Rafinesque. 



Leptaena (rugosa), Dalman. 



Chonetes (sarcinulata), Fischer. 



Orthis (pecten), Dalman. 



Schizophoria (resupinata), King. 



Streptorhynchus (pelargonatus), King. 



Orthisina (plana), A. d'Orbigny. 



Dicaelosia (biioba). King. 



Platystropliia (biforata), King. 



(Isorhynchus (aequirostris), King. 

 Hypothyris (cuboides), Phillips. 

 Camarophoria (Schlotheimi), King. 

 Uncites (Gryphus), Defrance. 

 Pentamerus (Knightii), J. Sowerby. 



Atrypa (reticularis), Dalman. 



Athyris (concentrica), M'Coy. 



Cleiothyris (pectinifera), Phillips. 



Retzia (Adrieni), King. 



Delthyris (elevata), Dalman. 



Trigonoh'eta (Stokesii), Kcenig. 



Spirifer (cuspidatus), J. Sowerby. 



Martinia (glabra), M'Coy. 



Strigocephalus (Burtini), Defrance. 



Epithyris (elongata), Phillips. 



Terebratella (Chilensis), A. d'Orbigny. 



Terebratula (vitrea), Lamarck. 

 { Pygope (diphya). Link. 



Eudesia (orbicularis), King. 



Megerlia (truncata). King. 



Waldheimia (Australis), King. 

 r Ismenia (pectunculus). King. 

 \ Delthyridaea, M'Coy. 

 LRhynchora (costata), Dalman. 

 rMagas (pumilus), Sowerby. 

 LBouchardia (rosea), Davidson. 



Thecidaea (Mediterranea), Defrance. 



Argiope(detruncata),Eudes-Deslongchamps.^ 



1 The genera in italics are Permian. 



2 I demur to the order Cryptobrachia, proposed hyMr. J. E. Gray for Thecidcea and Argiope, until more 

 is known respecting the molluscs belonging to these genera. From Professor E. Forbes's statements (which 

 I had not seen when my previous remarks on Thecidaea were written), it would appear that Argiope is a 



/ 



