22 GLABELLA. 



Petit changed the name of this species to M. fieeveana, because 

 splendens had been previously used by Grateloup for a fossil 

 species; but as that shell proved to be synonymous with M. 

 eburnea, Lam., a still earlier name, I restore splendens. 



M. GUILLAINI, Petit. PI. 6, fig. 94. 



Longitudinally plicate ; light violaceous, with revolving series 

 of square brown spots. Length, 18 mill. 



Abd-el Goury, near Red Sea. 

 M. MUSICA, Hinds. PL 6, fig. 95. 



Yellowish or light gray, with a few narrow revolving brown 

 bands, between which are undulated grayish markings. 



Length, '75 inch. 



Cape Blanco, W. Africa; 12 to 15 fathoms. 



M. Tyermani, Marrat, an unfigured species, appears from the 

 description to be closely allied to, if not identical with M. musica. 



M. DIADOCHUS, Ad. and Reeve. PL 6, figs, 96, -97. 



Pale ash-color, tinged with orange, with black revolving lines. 

 Length, 1 inch. 



Straits of Sunda (Ad. and Reeve) ; W. Africa (Marrat;. 

 Spire more elevated than in M. musica. 



M. BELCHERI, Hinds. PL 6, figs. 98, 99. 



Yellowish brown, delicately penciled throughout, but espec- 

 ially in the middle, with longitudinal brown markings, forming 

 revolving bands. Length, -8 inch. 



Cape filanco, W. Africa ; 12 to 15 fathoms. 



The spire is more elevated than in M. musica, and the pattern 

 of painting is different ; yet the two are very closely allied. 



M. VEXILLUM, Redfield. PL 6, fig. 100. 



Yellowish, with broad and narrow purple-chestnut revolving 

 bands ; lip-margin spotted with chestnut. Length, '75 inch. 



Cape Palmas, W. Africa. 



M. HARP^EFORMIS, Beck. PL 6, fig 1. 



Fulvous white, sometimes faintly banded with ash, with rows 

 of minute brown dots, and occasionally interrupted superior and 



inferior brown bands. Length, *7-*8 inch. 



Senegal, W. Africa. 



