5 



smooth ; within wliite witli an unilidated margin ; dorsal 



aperture very small, elliptical ; internal margin broad j 



length 2-0, breadth 1-5 inches. Conch, lllust. f. 28, 



ISt. Jago. 

 41 Fissurella olivacea, Gray in Brit. iNIus. Conch, lllust. 



f. 57. 

 42 Scutellum, Gray iu Brit. Mus. Conch, lllust. f. 



84, Cape of Good Hope. 

 Obs. This is F. Trapezina mihi, in Zool. Proc. p. 1'26. 

 43 Europaea, mihi, Conch, lllust. f. 43. JShores of 



the British Channel, &c. 

 Obs. This is the Patella grcDca of British Concholo- 



gical writers, and the F. caucellata of Gray in Annals of 



Philos. new series, vol. Vt, The Patella apertura of Mon- k 



tagu is the young of it. 

 44 Mediterranea, Gray iu Brit. Mus. Conch. lllust. 



f. 30, Mediterranean. 

 45 macroschisma Humphrey, Conchology. Conch. 



lllust. f. 39, New South Wales, var. f. 39,* Swan River. 

 Obs. This forms the Genus Macroschisma of Gray. 

 46 Noachina mihi, Conch. lllust. f. 15. Leach's 



British Shells, Tab. x, f. 4, 5 (Cemoria Flemitiyii). 

 Obs. This is Patella Fissurella, MiiU. Zool. Dan. t. 



24, f. 4 — 6. Patella Noachina, Chemn, t. 197, f. 1927 



1928, who says it is British ; and the Genus Punctmella 



of Lowe, Zool. Journ. iii. p. 77, who found it at Obau, 



in Argyleshire. 

 47 Chemuitzii mihi. Conch. lllust. f. 55. Zool. Proc. 



p. 126. 



