49 



Art. VI. Lamarck's Genera of Sheds 



[Continued from Vol. XV. p. 258.] 



2nd Division. 

 A constant vara on the right lip, in all the species. 



8. Struthiolaria*. 



Shell oval, spire elevated. Aperture oval, sinuous, terminated 

 at the base by a very short, straight canal without any fissure. 

 Left lip callous, expanded ; right lip sinuous, reflected, with an ex- 

 ternal varix. 



The struthiolaria is distinguished from buccinum, by having no 

 notch at the base of the canal, and by the varix on the right lip. 

 It has no other varix. 



Type. Struthiolaria nodulosaf. (Murex stramineus. Gmel.) 



Shell ovate-conical, thick, transversely striated, white, with 

 small wavy, longitudinal, yellow streaks ; whorls angular at the 

 top, flattened at the upper part, and nodular at the angle ; sutures 

 simple; interior of the lip reddish yellow. New Zealand. PI. v. 

 Fig. 130. 2 Species. 



9. RanellaJ. 



Shell oval or oblong, subdepressed, channelled at the base; two 

 rows of external varices. Aperture rounded, or sub-oval. Varices 

 straight, or oblique, situated at the distance of half a whorl from 

 each other and forming a longitudinal row on each side of the 

 shell. They are sometimes smooth, sometimes tubercular, or 

 spinous. 



Distinguished from struthiolaria and murex, by the position of 

 the varices, and the somewhat flattened form of the shell. 



Type. Ranella yigantea\. (Murex reticularis. Linn.) 



• From <rl(«69f, passer, which signifies both a sparrow and ait ostrUli. The 

 trivial French iiume for this shell is pied d'uutruche, ostrich's loot. 

 f Sodutar. 

 J Dim. from rami, hftvgi $ Gigantir. 



Vol. XVI. E 



