320 TROCHID 2. 
but in the examples I have examined of the 7. magus, T. zizi- 
phinus, T. tenuis and T. lineatus, either in or after the genial 
season, I have failed to discover any other reproductive organ 
than the one attached to the branchial leaf, if it be one. All 
this is so opposed to the dictum of M. Cuvier, that the Trochi 
and all the Pectinibranchiata have the sexes distinct, that 
one cannot help having suspicions that, notwithstanding the 
strong, almost convincing facts adduced, an error lurks some- 
where, though I cannot at present detect it. 
September 1852. 
Since the above was written I have examined numerous 
specimens of Jr. lineatus, with the same result as above 
stated ; and I have to report in addition, that I think a simple, 
short and direct oviduct may be traced from the ovary to the 
canal of the matrix. JI have also compared the contents of 
the ovary with the white masses deposited on the foot, and 
they are identical. On the left side of the body, m which 
the testis is deposited, I think the vas deferens may be seen 
proceeding in a direct line far without that of the branchial 
artery, to its issue at the base of the organ attached to the 
side of the plume, which I have presumed is the organe 
générateur. 
PHASIANELLA, Lamarck. 
P. puttus, Mont. et Auct. 
P. pullus, Brit. Moll. 1. p. 538, pl. 69. f. 1, 2,3; (animal) pl. D.D. f. 5. 
Animal inhabiting a spiral shell of 4—54 tumid volutions 
of singularly elegant variations of colour; mantle grass-green, 
margin plain. The head is a produced muzzle, truncate, but 
not cloven anteriorly ; the orifice of the mouth is beneath, in 
the centre of an area marked with fine darkish radiating 
lines; the back of the head and neck show three longitudinal 
bars of lead-colour, the middle the palest ; the anterior parts 
have close-set transverse lines of the same colour. The tenta- 
cula are long, flat, slender, and setaceous, edged with a brown 
line; the eyes are at the external bases, on short distinct 
pedicles, marked with brown and pale green. The buccal 
