PLATE 17 



115. Aullca cymhiola (Chemnitz), p. 55 



114. Aullca sophla (Gray), p. 42 



115. Aullca deshayesl (Reeve), p. 36 



116. Aullca deshayesl (Reeve), Abnormal specimen, p, 36 



117. Aullca norrlsl (Gray), p. 39 



118. Aullca scafa (Solander), p. 4l 



119. Aullca Innexa (Reeve), p. 37 



120. Aullca scafa (Solander), p. 4l 



121. Aullca nlvosa (Lamarck), p. 38 



