Zoological Illustrations/VolIII-Pl166



citrinus, (var.)

Citron Bulimus, (3 varieties.)

—See Pl. 4.

—See Pl. 46.


 * A. Yellow, with black lines. Zool. Ill. pl. 46.


 * B. Yellow, with black lines and chesnut stripes. Zool. Ill. p. 47.


 * C. Yellow, variegated with green; inner lip obsolete. Fig. 1. B. virescens. Sw. Bligh Cat. p. 13.


 * D. Green, striped with yellow; inner lip white. Fig. 2. 3.


 * E. Orange, with flame-coloured waved stripes. Fig. 4.


 * F. Pale yellow, with brown waved stripes.


 * Lam. Syst. 6. 2. p. 178. 5.

The beautiful shells here selected as a further illustration of the Citron Bulimus not only show the great variability of the species, but clearly prove that B. virescens is, as I suspected, only a variety of B. citrinus. In the shell at fig. 1. the upper part of the inner lip (like that described in the Bligh Appendix), is entirely wanting; although it bears, in every other respect, the appearance of a full-grown shell; the umbilicus likewise is open; but in the shell at fig. 2. and 3. the inner lip is quite perfect, and consequently folds over the umbilicus; thus the connexion between the green and yellow varieties is completely established.

I have subjoined a slight arrangement of the principal varieties; and have only further to observe, that the specific character I first proposed, appears to me the only one by which this species may be truly distinguished.

Since the description of B. aureus at pl. 47 was written, I have seen several other specimens; all of which tend to confirm my belief that it is distinct from B. citrinus.