PINNA. 



Species 20. (Mils. Cuming.) 



Pinna Philippinensis. Finn, testa clongato-trigmiS, 

 lateribvs rectis vet subincurms, medio subacute augti- 

 lato, uirinqne declim, undique la-mgatd, mibmargari- 

 taced ; Hvido-chiereu. fumm-nigricante radiatd et itn- 

 data. 



The Philippine Pinna. Siiell elongately triangular, 

 sides straight or slightly incurved, middle rather 

 sharply angled, sloping down each side, everywhere 

 smooth and somewhat pearly ; livid-asL, rayed and 

 waved with smoky-black. 



Hanley, Pro. Zool. Soc. 1858. 



Hab. Philippine Islands ; Cuming. 



A tine, elongately triangular shell, conspicuously angu- 

 larly raised in the middle, and everywhere peculiarly 



smooth and pearly. In colour it is a dull livid-ash, pro- 

 miscuously rayed and waved with smoky-black. 



Species 21. (Mus. Cuming.) 

 Pinna Gouldii. Pinn. testa rude fiabelliformi, antice 

 rotundatd, subventricosd, olivaceo-corned, sex-costatd, 

 costis valde irregularibus, subjlexuosis, nunc rude ser- 

 ratis, nunc tubtdoso-sqiiamatis. 

 Gould's Pinna. Shell rudely fan-shaped, anteriorly 

 rounded, slightly ventricose, olive-horny, six-ribbed, 

 ribs very irregular, rather flexuous, now rudely ser- 

 rated, now tubularly scaled. 

 Hanley, Pro. Zool. Soc. 1858. 



IM. ? 



Of very in-egular growth, and ambiguous siiecitic cha- 

 racter. 



