BULLA. 205 
were probably supposed to be representations of immature ex- 
amples. By strictly attending to the postulates of the diag- 
nosis, and ejecting, as erroneous, all such figures as do not 
harmonise with the term “rotundata,’ we exclude at once the 
engravings of B. amygdalus and other elongated species in 
Barrelier, Columna, Lister, Bonanni, Adanson, Petiver (t. 50, 
f. 13), and Gualtier (all except E). The rest of the synonyms 
decidedly indicate the Bulla ampulla of authors (unless, per- 
chance, some few of the great ring of Bulle figured by Seba) ; 
so, too, does “ Mart. Syst. t. 21, f. 189—191,” which reference 
has been added by Linneus in his revised copy of the ‘ Sys- 
tema.’ That shell (Sowerby, Genera Shells, Bulla, f. 4) is pre- 
sent in the Linnean collection, as stated, and alone agrees with 
the description and the purified references. Grewe’s figures 
are not marked 7, 8, but are the seventh and eighth in position 
upon the plate. 
Bulla liqnarta. 
The Bulla lignaria of our own coast (Crouch, Introd. Lam. 
Conch. pl. 14, f. 9) is marked for this species in the Linnean 
cabinet. The figure of Lister, being in harmony with the de- 
scription, enabled naturalists to identify this very peculiar-look- 
_ ing shell with great facility. In the copy of the ‘ Systema’ 
that belonged to Linneus “Mart. Syst. t. 21, f. 194, 195” has 
been rightly added; in that which belonged to his son “ Knorr, 
Gonch: 6): 37j)f-4, 6; Da Costa, “Conc. Ang. 4515 £-9,” 
“Pen. Zool. 4, t. 70, f. 83,” have been likewise correctly ap- 
pended. 
Bulla phvsts. 
The Bulla physis of authors (Mart. Conch. Cab. vol. i. pl. 21, 
f. 196, 197) is marked for this species in the Linnean cabinet, 
and agrees with the description and entire synonymy. The 
above-mentioned figures of Martini are also cited by Linneus 
in his revised copy of the ‘Systema.’ The 1 before 46, in the 
reference to Seba, is a typographical redundancy. 
