58 SPECIES OF THE SYSTEMA. 
HMlactrva soliva. 
The Mactra solida of British writers (Brown, Ill. Conch. 
G. B. pl. 41, f. 3) still remains in its marked receptacle in the 
Linnean cabinet, and aptly corresponds with the characters 
attributed to it. Our author has corrected his erroneous 
reference to the third (instead of the second) part of Bonanni. 
“Penn. Zool. iv. t. 51, f. 43, A,” and “Tast. Conch. 4. 2as8 
f. 87,” are appended to the synonyms in the copy of the 
‘Systema’ which belonged to the younger Linné. 
Tactva lutrarta. 
The Lutraria oblonga (Brown, Ill. Conch. G. B. pl. 48, f. 2) 
of authors is marked for this species in the Linnean collection. 
The references to Lister and Bonanni are correct; the M in 
that to Rumphius is a typographical blunder for N ? (as in 
ed. 10, where a further description of the toothing is appended). 
“Penn. Zool. iv! t. 42, f. 44,’ and “ List: 415, f. 259,” are an- 
nexed to the synonymy in the copy of the ‘Systema’ which 
belonged to the younger Linné. 
DONAX. 
DMonax scorteun. 
This shell was originally located in Venus by our author. 
Its identity with the succeeding species appears, from the 
following inscription upon a specimen of it (Donax scortum, 
Chemn. Conch. Cab. vol. vi. pl. 25, f. 245 to 247), “ Donaxz 
