BULLA. 335 



( Group of B. solidci). 

 B. PERDiciNA Menke. Unfigured. 



Shell elliptical-ovate, somewhat narrowed below, narrowly um- 

 bilicated above, solid, opaque, nearly smooth, the longitudinal striae 

 scarcely seen, spiral stripe wanting; lip subarcuate, with obtuse mar- 

 gin. Bright rufous-reddish, everywhere with whitish blotches and 

 brown dots articulated and somewhat banded. 



Alt. 10, diam. G-5 lines. (Mke.). 



Guinea; Sierra Leone ; Benguela. 



Bulla {Bullea) perdiclna Mke., Mai. Bl. 1853, p. 140.— Dkr., 

 Ind. Moll.Guin. Inf., p. 5. 



The quite egg-shaped form, solidity, opaqueness, smoothness and 

 light coloring of the shell, distinguish this species from others. 



{Mke.). 



B. SOLIDA Gmel. PL 43, figs. 1, 2; pi. 38, fig. 54; pi. 37, figs. 

 36, 37, 38. 



Shell oval, solid and strong, clouded with purple on a diffused 

 light ground-tint of purple and white, spotted tcith darker dots shad- 

 ing on the left side, bordered with ivhite on the right side. Surface 

 smooth with no spiral grooves whatever, but showing under a strong 

 lens, very dense and minxde, spiral sir ice, much waved and crenulated. 

 Vertex rounded, with a moderate apical umbilicus, showing more or 

 less spiral liration within. Outer lip rising but little above the ver- 

 tex, its outer margin a little arcuate, base widely curved ; columella 

 arcuate, with a wide, reflexed whitish or tinted crescentic callus ; 

 parietal callus strong. Interior rather livid, the lip-edge reddish. 



Alt. 35, diam. 25 mill. 



Giilf of Maracaiho (Oapt. A. P. Foster !) ; Vera Cruz, Mexico 

 (Heilprin Exped., 1890!); St. Thomas (Krebs ; Riise) ; Cuba 

 (Orb.) ; Martiniqtie (Cande) ; Guadeloupe (Hotess.). 



Bulla solida Gmel., Syst. Nat. (13;, p. 3434, founded upon the 

 Violetfdrbiges Kibitz Ey of Knoee, Vergniigen der Augen und des. 

 Gemiiths, pt. 6, p. 40, pi. 21, f. 2.— Morch, Mai. Bl. xxii, p. 173.— 

 B. ampulla Orb., Moll. Cuba, p. 121 ; not of Linne. 



This is very distinct from other West Indian species in its solid- 

 ity, rounded contour, entire lack of spiral grooves at base or top, 

 etc. The identification of Gmelin's very inaccurate description is 



