MARGINKLLA. 17 



Typical Group of M. y'lalwlla. 



M. GLABELLA, Linn. PI. 5, figs. 57, 58. 



Polished, reddish or reddish brown, darker at the suture, with 

 irregular flecks of opaque white ; lip yellowish brown. 



Length, 1-52 inches. 



West Coast of Africa; Canary Islands. 



Fossil in the upper tertiary of Italy. One of the most beau- 

 tiful species of Marginella ; occasionally the shell occurs 

 reversed. With this species are to ~be united Pseudomarginella 

 platypus and leptopus, Carriere (ante p. 6). 



M. POUCHETI, Petit. PI. 5, fig. 59. 



Color varying from that of M. glabella to chestnut-brown, 

 without the white flecks ; as in that species, there are obscure 

 indications of two bands of darker color. Length, 1 inch. 



Senegal. 



Possibly only a variety of M. glabella. 



M. IRRORATA, Menke. PL 5, fig. 60. 



Pink or yellowish, closely marked by zig-zag lines of minute 

 white spots. Length, *75-l inch. 



West Africa . 



This also is possibly only a variety of M. glabella, but is 

 smaller, less ventricose, the spire more drawn out, the spots 

 much more numerous and closer, almost forming lines of zig-zag 

 longitudinal direction. 



M. LABIATA, Yal. PL 5, fig. 61. 



Rosy white, sometimes very faintly banded ; lip-margin ex- 

 teriorly orange. Length, 11-2 inches. 



Campeachy, Yucatan, Brazil. 



M. PYRULATA, Redfield. PL 5, fig. 69. 



Like M. labiata, but more elongated, spire more produced. 



Length, 1-1 inches. 



Habitat unknown. 



Described by Sowerby as M. obesa, a natae preoccupied by 

 Redfield, who changed it as above. The species has not been 

 identified with any living. Marginella, since it was described, 

 and I agree with Mr. Redfield that it is possibly a fossil form. 



