( TAB. LXXXVII. ) 
PARTIS Q^V A R T A E C L A S S i S . S E C V N D A R 
s E c r I 0 N I s r E K r I ^ E. 
GENVS TERTIVM. 
CONCHA RHOMBOIDALIS. 
QqNCHA Hbomboidalis ejl Concha marina valvif aequalibus inaequilatera ^ notabiliter umbonata^ 
^ oblique incurvata y quafi quadrilatera , njentricofa ^ cardine a baji reShlinea dencata 
ajjurgente f O' oblique njerfus laftis brenjius fenfibiliter incurvato , 
ac rejlexo nee non diduClo . 
A. /^Oncha Rhomboidalis , ftriata , altero latere ftriis imbricatis donate, fubalbida. 
B. V_^ Concha Rhomboidalis , ftriata ftriis craflis rotundis , Candida . 
c. Concha Rhomboidalis , ilriis latis notata , Candida , & veluti cuticula c]uadam rufa 
velhta. 
D. Concha Rhomboidalis, ftriis lati/Timls complanatis , & raris divifa , cralTa , ponderofa , 
candidifTima . ( RumpE Tab, XLIF, lit- i. ) 
E. Concha Rhomboidalis, ftriis profundis identidem in fiimmitate bullatls exafperata , glo- 
bofa , Candida . ( Bonan, Claff, 11. mm. 73. ) 
F. Concha Rhomboidalis fubrotunda , dorfo fatis lato , & expanfo , umbonis cardine de- 
preflb, & infigniter didudo ; oris rima notabiliter hlante , Rriata flriis aliquando tranf- 
verfis , aliquando circularibus , vel undatis, ex atro-iulco fubalbida ,, 
G. Concha Rhomboidalis parva , ftriata ftriis granulatis , & In marginis extremitate ali- 
quantulum emiffis , & fubtiliffimo bylTo donatis , fufea . 
H. Concha Rhomboidalis elongata , naviculam exprimens dlverfimode , denfiffime flriata, & 
cancellata , ex albido fulvida, maculis fufeis , circumdata, pundata, & notata. (^AU 
dovrand. de Tejlaceis lib. 3. pag. 513', Rumph. Tab. XLIV. lit. p. , Bonan. Clalf. 11. 
mm. 31* ) 
U Concha Rhomboidalis cadem cum fuperiori , fed ftriata flriis infigniter craffis , raris ^ & 
fubrotundis . 
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