430 Dr. E. von Martens on new Species of Shells. 



5. Tellina Moluccensis. 



T. testa transversim oblongo-ovata, insequilatera, insequivalvi (valva 

 dextra inagis convexa), tenui, concentrice leviter striata, alba, ad 

 margines epidermide brunnea vestita, antice rotundata, postice 

 breviore, angustata, extremitate subperpendiculariter truncata; 

 flexura distiucta, carinula nulla ; dentes cardinales in utraque 

 valva bini, anterior valvse dextrse parvus ; ligamentum infossum ; 

 sinus palliaris latus, ascendens, magna parte a linea palliari solutus. 



Long. 22, alt. 16, crass. 7 mill. ; vertices in f longitudinis. 



Island of Batjan, Moluccas. 



Allied to T. angulata, Chemn., but smaller and without keel. 



6. Tellina prmtexta. 



T. testa transverse ovata, compressa, insequilatera, subinsequivalvi, 

 concentrice tenuiter striata, nitida, rosea, zonis pallidioribus con- 

 centricis picta, margine albo, antice rotundata, postice breviore, 

 subrostrata, margine ventrali paulum ascendente, dorsali recti- 

 lineo, valde declivi ; flexura distincta ; dentes cardinales in utraque 

 valva bini, laterales nuUi; area ligamenti excavata, carinula cincta; 

 sinus palliaris modicus, transversus, superne angulatus, antice 

 acutus, a musculo antico longe remotus, per | longitudinis suae 

 cum linea palliari concretus. 



Long, 3 J, alt. 20, crass. 8 mill. ; vertices inf-^ longitudinis. 

 Yokohama, Japan. 

 At first sight nearly allied to T. tenuis, Maton; on closer 



inspection, more nearly to T. nitida, Poli. 



7. Tellina dissimilis. 



T. testa trigono-oblonga, convexinscula, solidula, striis concentricis 

 subtilibus sculpta, opaca, alba, vertice et zonis nonnuUis ochraceis, 

 ad margines epidermide fusco-grisea vestita, antice rotundata, 

 postice acuminata ; margo ventralis medio subrectilineus ; flexura 

 distincta ; ligamentum superficiale, dimidium fere marginis dorsalis 

 postici occupans ; carinula in utraque valva a vertice prope mar- 

 ginem superum usque ad extremitatem posticam excurrens. Dentes 

 cardinales valvse dextrse duo, anterior minor simplex, posterior 

 validus bifidus ; valvse sinistrse unicus, validus, bifidus, interdum 

 adjecto altero posteriore minore simplici ; dentes laterales nulli. 

 Sinus palliaris magnus, primum versus verticem ascendens, dein 

 angulatim deflexus, lineam palliarem petens et cum hac aut angulo 

 recto conjunctus, aut antea paulum recurrens, in valva sinistra 

 musculo antico approximatus, in dextra inde sat remotus. 



Long. 49, alt. 33^, crass. 14^ mill.; vertices ad \ longitudinis. 

 Yeddo Bay, Japan. 

 Contours like those of T. laceridens, Hani. 



8. Tellina incongrua. '^ 



T. testa trigono-rotundata, convexa, solidula, obsolete concentrice 



