105 



Genus 5. PYRULA, Lamar ch. 



Animal ; similar to that of Triton and Murex. 



Shell; somewhat pyriform, spire sometimes exserted, sometimes 

 fiatly depressed; columella smooth, canal more or less 

 elongated ; lip simple, interior of the aperture sometimes 

 smooth, sometimes radiately ridged or striated. Operculum 

 horny. 



The TyrulcR were separated from the genus Fums of Bruguierej 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 cocMidium so nearly aUied, even in respect to species, were referred 

 by Lamarck, one to Pi/rula the other to Fttstts ; the P. carica, canaliculata 

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

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

 F.papyracea and Mawa form a division of the group allied to Purpura 

 by their very close relation with the P. grdea and Scalar if ormis. 



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

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

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

 discovery of the Kving animal, wliich proves to be allied rather to Harpa 

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



The Pyrula. thus restricted are somewhat limited in number; they 

 inhabit cliiefly 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 So?v. 



2. arauna {Murex), Lmn. 13. elongata, Lamarck. 22. perversa, Lamarck. 



3. Belclieri(ifMr.), Hinds. 13. galeodes, Lamarck. 23. pugilina(l/?o-e.f),Brn. 



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



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



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



7. bulbosa(iIf«reA'), Solan. 17. Mawae, Ciray. 27. subrostrata, Gray. 



8. Cdi\\?i\\c\A3Xdi{Murex),L. 18. melongena {Murex), L. 28. Ternatana {Murex)(jm.. 



9. clavella, Reeve. 19. moxio {Murex), Linn. 29. tuba {Mnrex), Gmelin. 

 10. coc]\\\A\ma.{Murex), L. 20. Paradisiaca, Reeve. 



