3 
ad umbones tenuibus, in medio et ad margines crassioribus, 
inflexis, sulcis longitudinalibus decussatis et crenulatis, antice 
posticeque eminentioribus et dentatis ; umbonibus tumidis, de- 
pressiusculis ; lunuld fuscescente, elongato-cordatd ; valvis intus 
in fornice croceis ; sinu pallii latissimo, profundo ; marginibus 
tenuissime et regulariter crenatis ; ligamento profunde immerso. 
Venus Listeri, var. Sow. Jun., Thes. Conch. p. 705. pl. 152. f. 7. 
Hab. ? Coll. Gray & Cuming. 
9. Venus cLATHRATA, Desh. JV. testd magnd, ponderosdfsolidd, 
ovato-transversd, inequilaterali, crassa, cordiformi, albd, rufo 
pallido irregulariter maculatd et subradiatd, postice rufa, 
transversim sulcato-laminosd, longitudinaliter multi-sulcatd, 
decussatd, costis transversis numerosis, longitudinales decus- 
santibus ; latere antico obtuso, postico latiore truncato, supe- 
riore fere recto, inferiore arcuato ; valvis intus albis vel pallide 
flavis, marginibus obsolete crenulatis ; sinu palli lato, profundo, 
apice obtusissimo ; lunuld ovatd, pallide rufescente, in medio 
prominuld, subcarinatd. 
Venus Listeri, var. Sow. Jun., Thes. Conch. p. 705. 
Hab. ? Coll. Cuming. 
10. Venus consosprina, Desh. V. testd ovato-subquadratd, 
valde inequilaterali, lateraliter compressd, rufo flavd, aliquantis- 
per fusco biradiatd, antice rotundato-obtusd, postice truncatd, 
superne inferneque convexd, transversim profunde et late sul- 
catd; sulcis antice brevioribus, sensim in medio elatioribus, pos- 
tice laminatis et prominentibus, sulco minore majoribus inter- 
jecto; lunuld ovato-cordiformi, in medio elatiore, subcarinata ; 
ared elongato-angustd, valve dextre lamellosd, sinistre levi- 
gatd; cardine lato, crasso; sinu pallii minimo, brevi, angusto, 
acute triangulari. 
Venus casina, Chemn. Conch. pl. 29. f. 301, 302. 
Hab. ? Coll. Cuming. 
11. Venus scuupTa, Desh. V. testd orbiculart, globosd, sub- 
equilateral, turgidd, solidd, crassd, alba, transversim regulart- 
ter plicato-sulcatd ; sulcis antice posticeque attenuatis, granu- 
loso-crenulatis, granulis antice irregularibus, postice majoribus, 
in medio costis crenulatis ; umbonibus tumidis; lunuld cordi- 
formi, paululum excavatd ; ared angustd, elongato-lanceolatd, 
uno latere fuscd ; cardine lato; sihu pallii brevi, angusto, acu- 
minato. 
Hab. 
12. VenrRupis picona, Desh. V. testd ovato-quadratd, trans- 
versd, inequilaterali, compressd, tenui, fragili, candide hya- 
lind, antice obtusd, postice late et perpendiculariter truncatd, 
marginibus dorsali et ventrali parallelis, longitudinaliter ob- 
soletissime striatd, transversim regulariter lamellosd, lamellis 
tenuissimis erectis, postice latioribus, angulum rectum formanti- 
? Coll. Cuming. 
