PINNA. 



Plate XIV. 



Species 25. (Mus. f'liming.) 



Pinna electrina. Finn, testa, anguste flabelliformi, 

 ad latera incurva, versm umbones medio angulato-r>en- 

 tricosd, radialim Jlexuoso-liratd, Uris fere ohoktu, 

 versus marginem squanialls, squamis brevibus, patulis ; 

 electrino-rubenle, varie mtbectdatd. 



The amber Pinna. Shell narrowly fan-shaped, in- 

 curved at the sides, angularly ventricose in the 

 middle towards the umboes, radiately flexuously 

 ridged, ridges almost obsolete, scaled towards the 

 margin, scales short, open ; amber-red, variously 

 clouded. 



Hab. Moluccas. 



This very characteristic species, narrowly incurved at 

 the sides, is of an elegant contour, and of a peculiar 



clouded amber-red colour. The scales also 

 short and widely open. 



Species 26. (Mus. Cuming.) 

 Pinna Zebuensis. Finn, testa elongato-trigond, subjla- 

 belliformi, tenui, pellucido-corned, versus umbones me- 

 dio acute angulatd, deinde liratd, Uris plus minus obao- 

 letis, muticis, undigue obscure nodulntis. 

 TiiE Zebu Pinna. Shell elongately triangular, rather 

 fan-shaped, thin, transparent-horny, sharply angular 

 in the middle towards the umboes, then ridged, 

 ridges more or less obsolete, smooth, everywhere 

 obscurely noduled. 

 Hab. Island of Zebu, Philippines ; Cuming. 



An elegant species of light transparent substance, sculp- 

 tured throughout with faint nodules in the place of scales. 



May, 18.58. 



