( TAB. LXXVI. ) 
PARTIS CLV ARTAE CLASSIS PRIMAE. 
S E C r 1 0 N I S r E K T I A 
Sequitur GENVS SECVNDVM. 
CHAMA AEaVILATER-A. 
A. /^Hama aequilatera , tranfverfim firiau , Candida, lincis undatis fufcis variegata , h 
fignata . 
B. Chama aequilatera , papilHs minimis acutis exafperata , feu fcobinata , ad altcrum lacus 
finuofa , albida , umbone rubefcente . ( K^mpb< TaL XLV . lit. g. ) 
c. Chama aequilatera, laevis, candidiffima , fofTuIa cordlformi Tatis confpicua . 
D. Chama aequilatera, tranfverfim profunde , veluti per lamellas firiata , fofiula cordiformi 
magis confpicua , ibique lateraliter infigniter aculeis acutis , & validis muricata, fub- 
albida. ( Kumpb. Tab. LVllL num. 4. ) 
S E C r 1 0 Q^V A KT A . 
CONCHAE MARINAE VALVIS AEQ^VALIEVS A EQ,VIL ATER A E MEDIOCRITER 
VEL LEViTER VMBONATAE ETOBLIQ^VE INCVRVATAE , 
G E V S P K I m V M , 
Concha marina njalvis aequaliht^s ae(^tiilatera , mediocriter , vsl Isviter 
umbonata^ & oblique incurvata , fubrotunda - 
E. /^Oncha marina valvis , aequalibus aequilatera, mediocritcr, vel leviter umbonata , 
& oblique incurvata, fubrotunda , papillis , feu lamellis, veluti depreflis imbricibus 
umbonem verfus fpeftantibus exafperata , feu fcobinata , albida • 
F. Concha marina valvis , aequalibus aequilatera , mediocriter , vei leviter umbonata , & 
oblique incurvata , fubrotunda, ftriis profundis tranfverfis umbonem verfus decrefcen- 
tibus elegantiffime undique cinda , albida , 
G. Concha marina valvis , aequalibus aequilatera , mediocriter , vel leviter umbonata , & 
oblique incurvata , fubrotunda , globofa , ponderofa , cancellatim ftriata , fubalbida , 
ex fulvo obfcure notata , altero latere macula atro-fufca infedo . 
