202 SPECIES OF THE SYSTEMA. 
faintly indicated, is expressly enumerated in both editions, 
among the very few specific features of the definition. 
Bulla verrucosa. 
The Ovula verrucosa (Sowerby, Gen. Shells, Ov. f. 2) of 
authors is present in the Linnean cabinet, and alone agrees with 
the definition of the species. The synonymy is correct, except 
the misprinted reference to Petiver 99, f. 2 (a botanical speci- 
men); it should have been 97, f. 22. The description in the 
‘Museum Ulrice’ is characteristic. Linneus, in his revised 
copy of the ‘Systema,’ has substituted “t. 712” for his neces- 
sary long reference to the books, sections and chapters in the 
first edition of Lister, and added, likewise, “ Pet. 97, f. 22,” 
eMart. Syst. 322, t. 2oateeo0,ee0 le 
Bulla gthdosa. 
The well-known, Ovula gibbosa (Sowerby, Genera Shells, Ov. 
f. 4) is present in the Linnean cabinet, and alone of its contents 
agrees with the description of a species which it was impossible 
for naturalists not to recognise from the account of it in the 
‘Museum Ulrice,’ and from its fair synonymy. In the revised 
copy of the ‘Systema’ “ List. 711, f. 64” has been substituted 
for the former circuitous mode of reference to the ‘ Historie,’ 
and “ Mart. Syst. 288, t. 22, f. 200, 201” has been quoted as 
illustrative. 
Bulla waucwun, 
In the box marked for this species in the Linnean cabinet is 
still preserved a specimen of the Bulla naucum (Sow. Conch. 
Man. f. 250) of authors. The reference to Lister “t. 1, f. ult.” 
might mislead us; it was the bottom figure on the second cop- 
per-plate of the first page of engravings which was really 
meant. The synonymy otherwise seems correct ; some of the 
