PINNA. 



Species 37. (Fig. 37, 38, Mus. Cuming.) 

 Pinna euglypta. Finn, elongato-trigond, postici in- 

 carvd, versus mnbones medio angulaio-devatd, el 

 iilrinque liratd, l/evigatd, plus minus peUucidd, minu- 

 tissime concmtrice striata, livido-cinered, versus urn- 

 bones plus minus vivide olivaceo-flavescenU funuo- 

 fusco ant iinctd aut undato-radiatd. 

 The carved Pinna. Shell elongately triangular, in- 

 curved posteriorly, angularly raised in the middle 

 and ridged on each side towards the umboes, smooth, 

 more or less transparent, very minutely concentri- 



cally striated ; livid-ash, more or less bright olive- 

 yellow towards the umboes, stained or wave-rayed 

 with smoky-brown. 

 Hanley, Pro. Zool. Soc. 1858. 

 Hob. Amboyna. 



A very characteristic species, allied to P. Jumata. In 

 the young specimen, it is a delicate translucid texture, 

 coloured towards the umboes with a bright olivaceous 

 amber, and the peculiar smoky-brown which is not un- 

 common to this genus is disposed in gracefully waved rays. 



