192 
5. Puotina viovacea, King. 
Margarita violacea, King, Zool. Journ. vol. v. p- 346. 
Hab. 2 
6. PHoTiIna LINEATA, Sow. 
Margarita lineata, Sow. Proc. Zool. Soc. 
Hab. 2 
(oh, 1993 7. Puorina nigra, A. Adams. P. testd depresso-conicd, im- 
19 ge " 
hi) 4» (VFS 
perforatd, solidd, nigrd, levi ; anfractibus subrotundatis, trans- 
versim sulcatis ; longitudinaliter oblique substriatd ; anfractu 
ultimo subangulato; regione umbilicali impressd ; callo albo 
obtecto. 
Hab, 
8. Puotina Frusca, A. Adams. P. testd obliqud, subconicd, ni- 
tidd, fusco variegatd ; anfractibus parum convexis, transversim 
sulcatis, ultimo subangulato; aperturd subrotundatd, intus 
viridi tridescenti. 
Hab. ? 
9. PHotina Sanpwicatana, A. Adams. PP. testd orbiculato- 
conicd, imperforatd, levi, albidd, viridi fuscoque maculata ; 
anfractibus rotundatis, ultimo subangulato, apice roseo ; aper- 
turd apertd, orbiculatd, intus viridi margaritaced ; labio albo ; 
umbilico callo albo obtecto. 
Hab. Mataineka, Sandwich Islands. 
? 
Mr. Oswald then communicated the following remarks by Mr. Mack, 
on the fact of black eggs being laid by a white duck of the ordinary 
domestic breed :— 
“« The egg (observes Mr. Mack) which is herewith sent was laid 
by a white duck, one of two belonging to Mr. Dickinson of Mitcham, 
which stray during the day on the common, but are confined at night. 
The drake was lost about a month since, and then one of the ducks 
commenced laying black eggs, the other still continuing to lay white 
ones,—she laid ten or twelve and then ceased for some days ; she has 
again commenced laying black eggs. The ducks are fed once a day 
with barley, at the time the other poultry are fed. 
«* Mr. Dickinson, showing the egg this morning to one of the 
guards on temporary duty on the Brighton rail at Croydon, he said 
he had a duck which laid the same colour, or even blacker, and that 
he had raised (at East Bourne) two broods of ducks from black 
eggs.” 
Haling Cottage, Croydon, May 24, 1851. 
