P I iN N A. 



Species 14. (Mus. Cuming.) 



Pinna papyracea. Finn, testa svielongato-trigond, fe- 

 nui, .tubpellucidd, livulo-cinered, postke costatd, coUis 

 diitaidibm, nonnuUin obsolete squantatis, mferstUiis 

 concavit, antice oblique undato-corrugatd. 



The paper Pinna. Shell elongately triangular, thiu, 

 somewhat transparent, livid-ash, posteriorly ribbed, 

 ribs distant, some obsoletely scaled, interstices con- 

 cave, anteriorly obliquely wave-wrinkled. 



Chemnitz, Conch. Cab. vol. viii. p. 243. pi. 9;!. f. 786. 



Hah. ? 



(Jhiefly distinguished by its widely-spread ribs, with 



their regular concave interstices. 



Pinna Hani 



Species 15. (Mus. Cuming.) 

 EYI. Finn, testa oblongo-trigond, fubventri- 



cosd, livid-o-olivaced, corned, postici liratd, liris nume- 

 rosis, irregularibm, interstitiis serratis, antice oblique 

 rude corrugatd, mperficie uiidique pecvliariter decus- 

 satim malleatd, margine postico incurvato, muricato- 

 squamaid. 



Hanley's Pinna. Shell oblong-triangular, somewhat 

 veiitricose, livid-olive, horny, posteriorly ridged, 

 ridges numerous, irregular, interstices serrated, ante- 

 riorly obliquely rud^y wrinkled, with the surface 

 curiously decussately malleated throughout, posterior 

 margin incurved, prickly-scaled. 



Ifab. Amboyna. 



A curiously-sculptured species, which gives me an op- 

 portunity of acknowledging the valuable assistance kindly 

 afforded me by Mr. Hanley in the examination of this 

 genus. 



April, 18.58. 



