PINNA. 



Species 27. (Fig. 27, 28, Mus. Cuming.) 

 Pinna fiim.*.ta. Finn, testa elotigato-trigond, radiaiim. 

 liratd, liru tenuibus, lavibus, subflexuosis, interstitiis 

 concavis, lineU concenirick demise decussatis, latere ati- 

 tico subruffoso ; livido-cinered, olivaceo-nigricante fu- 

 matd. 

 The smoky Pinna. Shell elongately triangular, radiately 

 ridged, ridges thin, smooth, rather flexuous, inter- 

 stices concave, densely crossed with concentric lines. 



anterior side rather rugose; livid-nsh, smoked wilii 



olive-black. 

 Hanley, Pro. Zool. Soc. 1858. 

 Hab. San Nicolas, Island of Zebu, Philippines. 



The specific peculiarities of this species are very distinct, 

 the radiating ridges being slight and rather flexuous, with 

 the interstices closely beset with concentric strise. In 

 colour it has a characteristic smokv hue. 



May, 1858. 



