278 SPECIES OF THE SYSTEMA. 
Stronmbus ater. 
‘The exclusively cited engraving of Rumphius, which repre- 
sents a shell (the Pirena terebralis of Lamarck), whose features 
harmonise satisfactorily with the few characters mentioned in 
the too succinct diagnosis, pictorially defines this species in 
the tenth edition of the ‘Systema, where no mention is made 
of the ‘Museum Ulrice.’ Whether the S. ater of that publica- 
tion should also be referred to the same shell may be doubted; 
since “ anfractus rotundati” (in its ordinary sense, at least) can 
scarcely be applied to the flat-surfaced volutions of that well- 
known Pirena, which must reassume its earlier specific appella- 
tion. It does not appear, from the two catalogues of his shells, 
that Linnzeus ever possessed the species. 
Strombus lividus. 
The somewhat meagre account of this shell in the ‘Museum 
Ulric’ does not suffice for any indisputable conclusion. The 
majority of authors have followed the supposed identification 
of it by Chemnitz; yet, perchance, have not remarked the 
doubts which he himself has expressed upon the subject. His 
own recognition was based upon the fact, that he had seen a 
specimen of a shell thus named in the magnificent collection of 
Spengler, a nobleman whose dictum at that period was ob- 
sequiously (and, such was his knowledge, not unreasonably) 
bowed to by the student of conchology. Perhaps it is owing to 
the bad condition of ordinary examples of Plewrotoma auriculi- 
fera (the modern name of the Chemnitzian shell referred to) 
that I have never yet beheld a specimen that harmonised sufii- 
ciently with the following passages: “Color lividus, maculis 
ferrugineis. Anfractus, in medio, serie simplici spinarum, coni- 
carum rectarum, acutarum. Apertura basi non coarctata.” 
Assuredly there are several known Pleuwrotome which answer 
equally well to the published details, so that, although the 
S. lividus of Linneus may be cited (with a “probably” attached) 
