RISSOIDJS. 



H. Adams remarks on its resemblance to Stenothyra, &c. ; 

 Barleeia ? microthyra, Martens, from Mauritius, also belongs here ; 

 possibly, however, they may both, as well as A. obesus and 

 A. pellyce prove generically separable from the typical Cali^ 

 fornian species ? 



3. Amphithalmus obesus. 



Amphithalmus obesua, H. Adams, P. Zool. S., 1865, Lord Hood's Island 

 long. J|, diam. % mil. 



I Lord Hood's I. (?) ; ex Mr. Damon. 



4. Amphithalmus pellyse. 



Amphithalmus pellyse, G. Nevill, J. A. S. S., 1881, Adelaide long. 1\, diam. 

 mil. 



1 Adelaide (type) ; coll. Miss Pelly. 



GENUS CINGULA, Fleming. 



Hist. Srit. Animals, 1828, type Turbo cingillus, Mtg. ; sect. = Peringilla, 

 Monterosato. 



1. Cingula cingillus. 



Turbo cingillus, Montagu, Test. Brit., 1803 ; var. rupestris, Forb., Ann. Mag, 

 V" landless." 



2 Weymouth ; coll. G. Nevill, Esq. 



2. Cingula glabrata. 



Turbo glabratus, MilUfeld, Verh. Ges. Nat. Fr. Berlin, 1818 and 1829. 

 20 Algiers; coll. P. Joly, Esq. 



3. Cingula (?) nigra. 



Assiminea nigra, Krauss, Siid-AfriTc. Moll. 1848, Alyoa and Table Bays 

 long. 0'7 t diam. 0'4 lin. 



var. (?) 

 1 Port Natal ; coll. G. Nevill, Esq. 



