25 



suborbiculari, postice angulau ; umhilico magno, profundo : 



long. 0-1, lat. 0-15. poll. Conch. lUustr. f. 13. 



Hab: ad littora Britannica. 



Syn. Turbo Margarita, Lowe in Zool. Journ. II., p. 107. 



tab. v., f. 10. 11. 11. b. 



Helix margarita, Laskey. 



6. Margarita carnea, Lowe. Testa subconica, spira brevi, apice 



elevato, acuto ; anfractibus- quatuor, striis elevatis, regularibus 

 subdistantibus cinctis; apertura magna, suborbiculari, antice sub- 

 angulata; umbilico magno, profundo : Conch. Illustr. Marg. f. 9. 

 Hab : ad littora Scotica. (Oban) 



Syn. Turbo carneus, Lowe in Zool. Journ. II. p. 107. tab. V. 

 f. 12. 13. 13. b. 



7. Margarita striata. Testa conoidea, anfractibus sex rotundatis, spira- 



liter striatis, striis elevatis, posticis distantibus, anticis approxi- 

 matis, umbilico parvo ; long. 0*85, lat. 0*9, poll. Conch. 

 I*iustr. Marg. f. 3. 18. 



Syn. Margarita striata, Bred. & Sowerby in Zool. Journ. IV. 

 p. 371. 



Hab, in Oceano boreali. 



Obs. This shell has a dull surface ; its longitudinal striae are 

 decussated by very fine and close-set lines of growth. 



8. Margarita arctica Leach. Testa orbiculari, subdepressa, tenui, nitida, 



olivacea : anfractibus quatuor, tumidis, ultimo majori ; sutura 

 profunda ; apertura orbiculari, magna ; umbilico magno ; pro- 

 fundo ; long. 0-15, lat. 0-2, poll. Conch. Illustr. Marg, f. 6. 



Syn. Margarita arctica, Leach in Ross's Voyage of Discovery} 

 1819. 8vo. 



• helicoides. Beck, MS. 



Hab, in mari artico (Baffin's Bay, Sabine ; Greenland, Beck.) 



9. Margarita Graenlandica, Beck, Tesla orbiculari, tenui, nitida, pallida, 



spira elevatiuscula ; anfractibus quinque rotundatis, lineis incre- 

 menti tenuissimis solum sculptis ; sutura distinct^ ; apertur4 sub- — "-*«>. 



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