PYRULA.— Plate IV. (Thes. 421.) 



Fig. 



30. spiRATA, sp. 29, Lamk. Pyr. 20; Murex pyrum, Dilwyn. 



— Gulf of Mexico. 



31. LAMELLOSA, sp. 24, Oould. N. W. CO. of Africa. 



32. 33. PERVERSA, sp. 32, Linnceus. — var. f. 33, candelabra, 



Lamk. — West Indies. 

 34, 35, 36. ARUANA, sp. 31, Linnceus; carica, Gmel. — Aru 

 Island. Gulf of Mexico. 



