102 



12. Cardita bimaculata, Desh. (PI. XVII. fig. 4, 5.) C. 

 testa ovato-subtrigona, inaquilaterali, depressiuscula, utroque la- 

 tere obtusa, sub epidermide squalide fusca albo-grisea, radiatim 

 costata ; costis 17—19 angustis, aqualibus, interstitia non superan- 

 tibus, squamulis regularibus erectis, exasperatis, postice angustio- 

 ribus ; apicibus acutis ; lunula profunda, ovato-lanceolata ; valvis 

 intus albis, utroque latere fusco maculatis. 



Hab. New Zealand. Coll. Cuming. 



13. Cardita crenulata, Desh. C. testa ovato-transversa, ob- 

 lique cordiformi, turgida, incEquilaterali, radiatim costata, albo- 

 lutescente, fusco maculata vel marmorata ; latere antico brevi, 

 angusto, postico laiiore oblique subtruncato ; costis crassis, aqua- 

 libus, nodoso-squamosis ; nodulis transversis, obtusis, approximatis ; 

 lunula depressa, Icevigata, cordata, fuscescente. 



Hab. Borneo. Coll. Cuming. 



14. Cardita vestita, Desh. (PI. XVII. fig. 10.) C. testa ovato- 

 transversa, inaquilaterali, compressa, radiatim costata, epidermide 



fusca spissa vestita ; costis 20 planis ad margines evanescentibus, 

 in latere postico quinque angustioribus ; lunula minima, profunda, 

 lanceolata. 

 Hab. Greenland. Coll. Cuming. 



15. Cardita amabilis, Desh. (PI. XVII. fig. 8, 9.) C. testa 

 suborbiculari, lateraliter compressa, subaquilaterali, radiatim 

 tenue costata, albo-flavicante pallide fusco irregulariter maculata; 

 umbonibus parvis oppositis ; lunula plana, vix excavata, lavigata, 

 ovata ; costis octo et viginti regularibus, interstitia parum superan- 

 tibus, eleganter et regulariter crenato-nodosis ; cardine incrassato, 

 in valvula dextra unidentato, in sinistra bidentato, dente valvce 

 dextra triangulari magna ; valvis intus albis. 



Hab. New Zealand. Coll. Cuming. 



16. Cardita castanea, Desh. (PI. XVII. fig.ll.) C. testa ovato- 

 globosa, subtransversa, incequilaterali, fusco-castanea, radiatim 

 costata; costis latis, depressis, 22—24, septem in latere postico 

 angustioribus, crenulatis, interstitiis scepius albis, angustioribus ; 

 umbonibus tumidis, obliquis ; lunula parva, transversa, profundis- 

 sima ; valvis intus pallide rufescentibus. 



Hab. Austraha. Coll. Cuming. 



17. Cardita Cumingii, Desh. (PI. XVII. fig.l5.) C. testa ovato- 

 transversa, subtrapeziformi, crassa, solida, tumida, antice cordi- 

 formi, radiatim costata, sub epidermide fuscescente tenue striata, 

 albo-flavicante, fusco eleganter maculata et variegata, aliquantisper 

 transverse zonula; costis crassis, planis, ad apices anticeque crenu- 

 latis, posticis angustioribus squamis crassis, paucis, irregulariter 

 sparsis, exasperatis ; umbonibus magnis, oblique spiralibus ; lunula 

 profundissima, angusta. 



Hab. Borneo. Coll. Cuming. 



