( TAB. LXXV. ) 
PARTIS Q^^ARTAE CLASSIS PRIMAE 
S E C T I 0 N I S SECFND^E. 
GENVSQ,VARTVM. 
CONCHA PECTINIFORMIS AEdVILATERA A CARDINE 
AD ORAM MAGIS CONTRACTA - 
A. /^Oncha Pedliniformis aequilatera , flriata ftriis granulatis , aliquando bifidis , albida, 
aliquibus maculis fubrubris punflata . 
B. Concha Pe£tiniformis aequilatera , parva , tenuis , ftriis cancellatis , fubrubro colore de- 
pi6la . 
c. Concha Pedllniformis aequilatera, ftriis cancellatis elegantifTime diftinfta 3 ftriae vero a 
cardinc ad oram ut plurimum craffiores funt ; iliac autem , quae dorfum circumdant, 
minutiffimac, & acutae , in decuflatione quafi imbricatae exafperantur, & undatim diri- 
guntur 5 in margine interno tenuilTimae, & argutiinme eft denticulata. Tota eft Ia£tea . 
D. Concha Pe£\iniformis aequiiatera , deprefta , ftriis raris complanatis , & aliquibus lineis 
circumdata , Candida . 
S E C T 1 0 TERTIS. 
CONCHA H MARINAE VALVIS AEQ.VALTBVS AEQ^VILATERAE 
NOTABILITER VMBONATAE ET OBLIQVE INCVRVATAE , 
G E N V S P R 2 M V M. 
CONCHA MARINA VALVIS AEaVALIBVS AEaVILATERA NOTABILITER VMBONATA 
ET OBLiaVE iNCVRVATA SVBROTVNDA VVLGARIS . 
1 
E. A^Oncha marina valvis aequalibus aequiiatera, notabiliter umbonata , & oblique in- 
curvata , fubrotunda , vulgaris , ftriis circularibus minutifsime fignata , & cin£ta , 
fulvida. 
F. Concha marina valvis aequalibus aequiiatera , notabiliter umbonata , & oblique incurva- 
ta 5 fubrotunda , vulgaris , ftriis denfiffimis , & profundis tranfverfim ftriata , & exa- 
fperata , Candida, leviter ex fufco variegata , & radiata. 
G. Concha marina valvis aequalibus aequiiatera , notabiliter umbonata, & oblique incurva- 
ta , fubrotunda , vulgaris , tranfverfim ftriata, ex albido, & fufco fignata, & lineata. 
H. Concha marina valvis aequalibus aequiiatera , notabiliter umbonata , 6 c oblique incur- 
vata , fubrotunda , vulgaris , ftriis circularibus profundis , elatis , bullatis exafperata , 
& circumdata , trafla , fubalbida , 
G E N F S SECFNDFM, 
CHAMA AEQ.VILATERA. 
Chama j^equ'tlatera , efl Concha marina vdlvh aequalibus aequiiatera , notabiliter umbonata , 
(5* oblique incurvata , ventricofa , umbone eminentiore , acutiore , CT jenjibtliter incurvafo , 
fuaque incurvatura e latere folJulam cordiformem oblongam efformant 
L. A^Hama Aequiiatera, ftriata, parva, Candida . 
M. Chama Aequiiatera , tranfverfim leviter lineata , fufea . 
N. Chama Aequiiatera , tranfverfim ftriata , fubviridis , ex albo fafeiata . 
o. Chama Aequiiatera, tranfverfim ftriata, fubalbida, lineis rubicundis undatim , & diver- 
fimode punftata , & variegata . 
p. Chama Aequiiatera, tranfverfim ftriata, albida, lineis, & maculis purpureis undatim fi- 
gnata . 
a* Chama Aequiiatera , laevis ponderofa , triangularis , Candida , aliquibus fulvis maculis 
obfeure notata . 
R. Chama Aequiiatera , tranfverfim ftriata , ex albldo-rofeo colore depifla . 
s. Chama Aequiiatera , tranfverfim ftriata , ex fulvido rubefeens . 
