93 
Petrefacta Svecana 
Molluscorum Brachiopodorum: 
Genera: 
/. Cardo dentibus munitus. 
* Nate utriusque valvce imperf orata. 
Cardo compressus , rectilineus, 
saepius latitudinem testae exeedens, 
foveola nulla 1. iiicoiispicua . Leptaena. 
Cardo rectilineus natibus distan- 
'tibus; välva major area basali trans- 
versali, laevi, cum foveola triangulari Ortliis. 
Cardo rectilineus; välva major 
dorso in semi-conum vel pyrami- 
dem dimidiatam elevato, latere car- 
dinali perpendiculariter plana . Cyrtia. 
Cai-do plus minus rotundatus na- 
tibus distantibus, utraque välva con- 
vexa, majoris nate rostrata et foveo- 
la deltoidea , . . . Deltliyris. 
Välva major nate rostrata a car- 
dine immerso remota, canali deltoi- 
^eo magno; intus bilocularis . Gypidia. 
Cardo rotundatus, natibus om- 
nino eonvenientibus ; valvae majoris 
nates basin minoris obtegens, apice 
imperforato . . . . Atrypa. 
Nate alterius 'v alv ob perfor at a Terebratula. 
II. Cardo dentibus destitutus. 
Välva superior retuso-conica, ver- 
tice excentrico; inferior planulata, 
plus minus adfixa . , . Crania. 
