20 BIVALVE SHELLS. 



50. DOSINIA BILUNULATA. B.M. 



D, testa subtrigono-orbiculari, superne attenuata, comjiresso- 

 planata, concentrice tenuissime striata, striis ad latera subpro- 

 minentioribus, in squamis lamellaeformibus terminatis, ad latus 

 anticum ante marginem lunulam secundam formantibus ; area 

 ligamenti latissima, excavata, lasvigata ; lunula prima cordata, 

 subprofunde impressa, secunda oblongo-cordata, multo majore; 

 alba, radiis pallide roseis interruptis concinne picta. 



Artemis bilunulata, Hanley, Desc. Cat. p. 106 ; in Wood, Sup. 

 pl. 19. f. 44. 



Gray, Anal. 1838, t. viii. p. 309. 

 Reeve, Conch. Icon. pl. 4. f. 22. 

 Artemis bilunata, Sow.jun. Thes. Conch. p. 670. pl. 143. f. ^{^. 



Hab. Mare Japonicum. 



Sinus pallii triangularis, brevis, apice acutissimus, suba^qui- 

 lateralis. 



51. DOSINIA CUMINGII. 



D. testa vix orbiculari, postice conspicue angulato-producta et 

 truncata, concentrice subtilissime et creberrime striata ; striis ad 

 latera convergentibus, extremitatibus per marginem posticum 

 squamato-laminatis ; area ligamenti perampla, lata, parum ex- 

 cavata; lunula cordata, impressa; albida, ferrugineo-fusco 

 eximie tincta et radiata. 



Artemis Cumingii, Reeve, Conch. Icon. pl. 9. f. 30. 

 Sow. jun. Thes. Conch. p. 670. pl. 143. f. 64. 



Hah. Insula Zebu Philippinarum. 



c. Area dorsali excavata. 



52. DOSINIA EXASPERATA. ~ B.M. 



D. testa subquadrato-orbiculari, lactea, concentrice irregulariter 

 sulcata.liris subundatis,hic illic convergentibus, ad latera promi- 

 nentioribus, interruptis et corrugatis, ad marginem conspicue 

 squamato-lamellatis, erectis ; area ligamenti late excavp.ta, lae- 

 vigata ; lunula cordata, linea profunde impressa circumscripta. 



Cvtherea ( Artemis) exasperata, Phil.Abhild. Conch. Cyther. p. 36. 

 'no. 4. pl. 8. f. 4. 



Reeve, Conch. Icon. pl. 4. f. 21. 



Sow. jun. Thes. Conch. p. 670. pl. 143. f. 62 ? 



Hah. India orientaUs, sinus Manillae, insulse Philippinse. 



