348 SMITHSONIAN MISCELLANEOUS COLLECTIONS [voL. 48 
Voluta musica plicata DILLWYN. 
Voluta sulcata Lamarck, Ann. du Mus., xvi, p. 68, 1811; Chemnitz, 
Conch, Cab., x, p. 151, pl. 149, figs. 1403-4, 1788; Sowerby, Thes. 
Conchyl., p. 212, pl. tim, fig. 87, 1847.. Not V. sulcata Gmelin, 1792. 
Voluta plicata Dittwyn, Descr. Cat. Rec. Shells, 1, p. 563, No. 152, 1817. 
“West Indies” (Chamberlain). 
Shell oval, of much the same form as variety carneolata, with 
eight or nine low inconspicuous ribs, not nodulous at the suture, 
white, with nebulous fawn-colored blotches and the spiral brown 
lines obsolete; three narrow white spiral bands articulated sparsely 
with dark brown, and numerous fine brown dots on the body ; whole 
surface spirally sulcate, the interspaces having the aspect of flattish 
slightly elevated bands; nucleus yellowish white; aperture whitish 
or yellow, with brown spots on the outer lip and ten or eleven plaits 
on the pillar lip. 
WS Nat, Mus. 131232. 
A well marked variety, but hardly to be considered as a species. 
V oluta musica polypleura Crosse. 
Crosse, Journ. de Conchyl., xxiv, p. 163, pl. v, fig. 6, 1876. 
Antilles ?, Crosse (Coll. Prévost). 
This differs from the other varieties of the species in the total 
absence of the brown lines which mimic a musical manuscript; by 
strong spiral sulcations near the canal and in front of the suture 
but absent from the body of the shell; and by numerous longitudinal 
riblets in the interspaces between the usual ribs. The nucleus is 
horn-color ; there are eleven plaits on the pillar lip, of which three 
are feeble; the aperture is whitish and the shell measures 56 mm. 
in length, with a greatest diameter of 30 mm. 
This form is only known from the specimens which served Crosse 
for his description and of which the provenance is unknown, but 
which may have come from the Antilles. It is possibly referable to 
the V. chlorosina of Lamarck. 
There are several other varieties which have not, so far, been 
reported from the West Indian region. These are the Voluta thia- 
rella Lamarck, based on the Voluta musica elongata of Chemnitz, 
which has the spire abnormally produced, and to a color variety of 
which Lamarck gave the name of Voluta nebulosa. Another is the 
Voluta guiniaca of Lamarck, founded on a: shell brought from 
Guinea and given by a friend to Chemnitz (Conch. Cab. x1, pl. 178, 
figs. 1717-18; 1795), who called it Voluta musica guineensis. 
