398 Tra n unctions. 



Molis gracilis, T. W. Kirk. 



Trans. N.Z. Inst., vol. xv, p. 217. 



Chromodoris aureomarginata, Cheeseman. 



Trans. N.Z. Inst., vol. xiii. p. 203. 

 (Ten other distinct species.) 



Order PULMONATA. 



Fam. Auric ulid^;. 



Marinula fUho l i, Hutton. 



One dead shell from shell-sand. 



Leuconopsis obsolela, Hutton. 



Common under stones at high water. 



Fam. Amphibolid;e. 

 Amphibola crenata, Martyn. 

 Abundant on mud-flats. 



Fam. SlPHONARIIDiE. 



Siphonaria obliquata, Sowerby. 



On rocks about high-water mark ; abundant. 



Siphonaria australis, Quoy and Gaimard. 

 zealandica, Quoy and Gaimard. 

 Both species common ; on rocks between tide-marks and 

 on seaweeds in rock-pools. 



Fam. Gadtniid^;. 

 Gadinia nivea, Hutton. 



On rocks about high- water mark ; rare. 



Fam. Onoibuo^. 



Onchidella patelloides, Quoy and Gaimard. 

 nigricans, Quoy snd Gaimard. 

 Common on rocks about high-water mark. 



Class LAMELLIBRANCHIA. 



Order PROTOBRANCUIA. 



Fam. Solenomyid^;. 



Solenomya parkinsoni, E A. Smith. 

 Have only met with dead shells. 



Fam. NuculidjB. 



Xiicn/a nitidula, A. Adams. 

 lacunosa, Hutton. 

 Have dredged live shells in shallow water. 



