PLATE XI. 



Drillia nuchata Dall ; 13.5. Page 92. 



Drillia Verrillii Dall ; 5.5. Page 93. 



Drillia lissotropis Dall, young ; 4.5. Page 91. 



Drillia lissotropis Dall, adult ; 7.0. Page 91. 



Drillia havanensis Dall ; 9.0. Page 93. 



Drillia lithocolleta Watson, young ; 12.5. Page 95. 



Drillia smirna Dall ; 15.0. Page 94. 



Drillia oleacina Dall ; 10.0. Page 94. 



Mangilia pclagia Dall ; 10.75. Page 117. 



Leucosyrinx Sigsbcei Dall ; 25.5. Page 76. 



Mangilia antonia Dall, young ; 7.0. Page 116. 



Mangilia comalolropis Dall ; 6.0. Page 116. 



Pleurotomclla leucomata Dall ; 13.5. Page 120. 



Mangilia ipara Dall ; 8.5. Page 115. 



Mangilia quadrata var. monocingulata Dall ; 6.75. Page 114. 



Mangilia quadrata var. ; 7.0. Page 114. 



Mangilia peripla Dall ; 8.0. Page 115. 



Drillia premorra Dall ; 9.5. Page 93. 



