105 



Genus 5. PYRULA, Lamarck. 



Animal ; similar to that of Triton and Murex. 



Shell ; somewhat piriform, spire sometimes exserted, sometimes 



flatly depressed ' ; columella smooth, caned more or less 



elongated; lip simple, interior of the aperture sometimes 



smooth, sometimes radiately ridged or striated. Operculum. 



horny. 



The Pyrula were separated from the genus Fusus of Bruguiere, with 

 little to distinguish them beyond their pear-shaped peculiarity of form, 

 which is certainly characteristic in the typical species ; there are, however, 

 many inseparable from these which lead to the confines of the group, and 

 so to Fusus by a continuity of character almost imperceptible. The P.pugi- 

 lina and cochlidlum so nearly allied, even in respect to species, were referred 

 by Lamarck, one to Pyrida the other to Fusus; the P. carica, canaliciihifti 

 and spirata, on the other hand, are very peculiar in form, and ought, without 

 doubt, to be distinguished from any of the proximate genera ; wlulst the 

 P.papyracea and Maivce form a division of the group allied to Purpura 

 by their very close relation witli the P. galea and Scalar iformis. 



One division of the Lamarckian Pyrula, commonly known as the ' Figs ', 

 has been distinguished as a genus by Swainson under the name of Ficula, 

 and the propriety of tins change has been recently confirmed by the 

 discovery of the living animal, which proves to be allied rather to Harpa 

 and Dolium, and ought properly to have been included in the same family. 



The Pyrulre thus restricted are somewhat limited in number; they 

 inhabit chiefly the Eastern Seas, with one or two from Mexico, the West 

 Indies, California and the United States. 



Species. 



1. anomala, Reeve. 11. corona {Murex), Gmel. 21. patula, Brod. and Sou-. 



2. arauna {Murex), Linn. 12. elongata, Lamarck. 22. perversa, Lamarck. 



3. Belcheri(iHf«?-.), Hinds. 13. galeodes, Lamarck. 23. pugilina(J!/Kmi'),Bni. 



4. bezoar {Buc.), Linn. 14. lactea, Reeve. 24. spirata, Lamarck. 



5. bispinosa, Pliilippi. 15. lignaria, Reeve. 25. spirillus {Murex), Lin. 



6. bucephala, Lamarck. 16. lineata, Lam. 26. rapa, {Bulla), Linn. 



7. bulbosa(Jf?<mp), Solan. 17. Mawae, Gray. 27. subrostrata, Gray. 



8. canaliculata(l/M?-^),Z. 18. nielongena {Murex), L. 28. Ternatana {Murex)Gm. 



9. clavella, Reeve. 19. mono (Murex), Linn. 29. tuba {Murex), Gmelin. 

 10. cochlidi \\m{Murex), L. 20. Paradisiaca, Reeve. 



