The three incongruous forms assorted as _Myæ_ were not so united in the
MS.; the second being very properly placed with the _Mussels_, the other
two ascribed to _Solen_.
M. LUTRARIA. _Sol._ ovali-oblongus, cardine laterali dilatato
semiorbiculato.
In lieu of the reference to Lister (whose work does not appear to have
been consulted by our author at the period when this portion of his
manuscript was written), plate 45, figure N, of Rumphius was quoted as
illustrative. The published account of the hinge is much more complete
than the written one, which was apparently drawn up from a worn
specimen; it ran as follows: "Cardo extus vix gibbus, intus constans
laminis 2 semiorbiculatis concavis introrsum spectantibus."
By a slip of the pen, in my "Ipsa Linnæi Conchylia," I had termed
Brown's figure of the Linnean _Mya lutraria_, _L. oblonga_, instead of
_L. elliptica_.