28 PROCEEDINGS OF THE MALACOLGGICA L SOCIETY. 



collectively, the name Sistrum can still be applied as lieretofore for 

 the smaller series of species with simple peristomatal processes. 

 I take tlie tvpe, or first species mentioned in the Museum Bultenianum 

 under Drupa ' as D. morum, to be identical with the old Murex ricinus 

 of Linnaeus {Ricimda ricinus) = R. arachioides, Larak., var. alholahris, 

 Blainville, of the typical section. It is well figured by Knorr,- and 

 Bolten refers both to his representations and those of Martini 

 (iii, tab. ci, figs. 972, 978). 



1 Mus. Bolten., 1798, p. 55. 



- "Les delices des yeuxet de I'esprit," 1764, tab. xxv, figs. 5, 6. 



