13 



20 Venus Chemnitzii app. 



21 



22 

 23 

 24 

 25 

 26 

 27 

 28 

 29 

 30 



31 

 32 



33 



118 



Lyra app. 

 Decipiens app. 

 Lacerata app. 

 Scabra app. 

 Roborata app. 

 Calophylla app. 

 Impressa app. 

 Kochii[notepl27] 

 Multicostata p . 1 2 8 

 Crenifera Var. p. 



Histrionica p. 119 

 Tricolor p. 1 1 9 

 Aphrodina Var. p. 



126 



#* 





34 Venus Aspersa 



35 Deshayesii app.-J- 



36 



37 



Marmorata p. 123 



Tristis Variety 



Elegantina p. 125 



38 Hiantina p. 120 



39 Crassicosta p. 118 



40 



41 



42 



43 

 44 

 45 



46 



47 



Intermedia p. 127 



Zelandica p. 127 



Gallina p. 115 J 



Peronii p. 126 



Spissa p. 117 



Crassicosta young 



p. 118 



Nuttallii p. 113 



Kelletii app. 



* By an error, the description of V Sulcaria (which is a good 

 and distinct species) has been appended to V Aspersa. This will 

 be rectified in the appendix in which it is intended to give de- 

 scriptions of those shells which have been figured but not noticed 

 in the text, many having only appeared since its publication. 



■f This is the V Litterata which (previously confused with 

 Aspersa, (the Reticulata of Ch. f. 439,) was first noticed as dis- 

 tinct by M. Deshayes. If the genus pullastra be admitted, it 

 must resume the name of P. Radiata, by which the figure is quoted 

 in Anton's Verzeichniss. 



J This is the Mediterranean species so designated by Linnaeus 



