130 
habitation of the Pinnotheres*. The byssus of pinna squa- 
mosa is often manufac aia into’ gloves at Palermo and 
» 
on 
Naples. 
Pinne seem to be dhbject to very'*considerable variety, 
both in form and sculpture, even in {the different stages of 
growth, which causes the, p pericmtte be but little under- 
stood. 
r TAB. LVII. 
PINNA SACCATA. 
P: testa saccata levi (antice salter a) costata, externe 
subabrupte producta subdistorta. 
ap alba. Rumph. Amboin. t. 46, f. Nn. 
r. saccata. Linn. Syst. Nat. xii. 1400, 268. 
— Gmel. 5 yst. Nat. 
Habitat in. oceano Indico. 
Ce BAG PINNA. 
Shell smooth, bag-shaped (antebont at least), ribbed, 
externally abruptly produced, somewhat distorted. 
This rare pinna is readily distinguished from all other 
species by its distorted irregular form. Some specimens 
are ribbed from on base to the point, others only ante- 
riorly. i 
Inhabits the Indian seas, and is eatggaried ey a 
species. 
* For an account of the Pinnotheres, of which genus many species are 
known, see Leach’s Malacostraca poduphthalmata Britannia, No. I. 
