CONCHOLOGY* 147 



M. polygonulus. M. lyratus. 



M. vitulinus. M. concatenatus. 



M. angularis. M. granarius. 



M. crispatus. M. fimbriatus, 



M. fenestratus. M. pulchellus. 



M. cingulatus. M. aciculatus, 



M. crassispina. The thick-spined Murex. PI. 26, fig. 3. 

 Species with tube very long and spiny. 



M. adustus. The burnt Murex. PI. 26, fig. 1. 

 Species with three ramified varices. 



M. Haustellum. The Snipe Murex. PL 26, fig. 4. 

 Species with tube very long, and without spines. 



M. acanthopterus. The prickly Murex. 

 Species with three varices on each whorl. 



M. melanomathos. The black-spined Murex. 

 Species which have whorls with more than three varices ; 

 the tube almost close. 



M. lyratus. The lyre-shaped Murex. 

 Species sub-turreted. 



M. vitulinus. The young Murex. 

 Species sub-globular ; the spire and the canal rather shorty 

 very open ; the aperture sub-effuse. 



11. Triton. Thirty-one species. 



In this genus the varices are in longitudinal rows or se-* 

 ties, but alternating, few in number, sometimes only one on 

 each whorl. They are never spinous or foliated, though 

 frequently plaited or tuberculated. 



The Triton variegaius type of this genus is one of the 

 largest spiral shells. 



Shell oval, with spire and canal straight, middling, gener- 

 ally rough, garnished with varices, rare, scattered, and pre- 

 served in longitudinal rows; aperture sub-oval, elongated, 



