EAST AMERICAN SCAPHOPOD MOLLUSKS. 13 



Cadidus (Polyschides) quadridentatus quadridentatus Dall 1881, page 99. 

 Cadulus (Polyschides) quadridentatus acompsus, new subspecies, page 100. 

 Cadulus (Polyschides) tetrodon Pilsbry and Sharp, 1897, page 101. 

 Cadulus (Polyschides) carolinensis Bush, 18S5, page 102. 

 Group of C. grandis: 



Cadulus (Platyschides) grandis Verrill, 1884, page 105. 



Cadulus (Platyschides) spectabilis Verrill, 1885, page 106. 



Cadulus (Platyschides) elephas, new species, page 107. 



Cadulus (Platyschides) poculum Dall, 1889, page 108. 



Cadulus (Platyschides) aequalis Dall, 1881, page 109. 

 Group of C. agassizi: 



Cadulus (Platyschides) agassizii Dall 1881, page 110. 



Cadulus (Platyschides) catharus, new species, page 112. 



Cadulus (Platyschides) parvus, new species, page 113. 



Cadulus (Platyschides) foiveyensis, new species, page 114. 



Cadulus (Platyschides) portoricensis, new species, page 115. 

 Group of C. pandionis: 



Cadulus (Platyschides) rushii Pilsbry and Sharp, 1898, page 116. 



Cadulus (Platyschides) rushii arne, new subspecies, page 118. 



Cadulus (Platyschides) pandionis Verrill and Smith, 1880, page 118. 



Cadulus (Platyschides) ivatsoni Dall, 1881, page 120. 

 Cadulus (Platyschides) vulpidens Watson, 1879, page 121. 

 Cadulus Platyschides) providensis, new species, page 122. 

 Cadulus (Platyschides) elongatus, new species, page 122 

 Cadulus (Platyschides) greenlawi, new species, page 123 

 Cadulus (Platyschides) arctus, new species, page 124. 

 Cadulus (Platyschides) braziliensis, new species, page 124 

 Cadulus (Platyschides) hushii Dall, 1889, page 125. 

 Cadulus (Platyschides) lunula Dall, 1881, page 126. 

 Cadulus (Platyschides) simpsoni, new species, page 127. 

 Cadulus (Platyschides) amiantus Dall, 1881, page 128. 

 Cadulus (Platyschides) nitidus, new species, page 129. 

 Cadulus (Platyschides) miamiensis, new species, page 129. 

 Group of C. sauridens: 



Cadulus (Gadila) sauridens Watson, 1879, page 131. 



Cadulus (Gadila) rastridens Watson, 1879, page 132. 



Cadulus (Gadila) mayori, new species, page 133. 

 Group of C. minusculus: 



Cadulus (Gadila) minusculus Dall, 1889, page 134. 



Cadulus (Gadila) iota, new species, page, 134. 



Cadulus (Gadila) subula new species, page 135. 



Cadulus (Gadila) verrilli, new species, page 136. 



Cadulus (Gadila) regularis, new species, page 137. 



Cadulus (Gadila) atlanticus, new species, page 137. 

 Cadulus (Gadila) cylindratus Jeffreys, 1877, page 139. 

 Group of C. acus: 



Cadulus (Gadila) acus Dall, 1889, page 140. 



Cadulus (Gadila) dominguensis Orbigny, 1853, page 141. 

 Cadulus (Cadulus) curtus Watson, 1879, page 142. 

 Cadulus (Cadulus) congruens Watson, 1879, page 142. 

 Cadulus (Cadulus) transitorius , new species, page 143. 

 Cadulus (Cadulus) transitorius barbadensis, new subspecies, page 144. 

 Cadulus (Cadulus) ampullaceus Watson, 1879, page 144. 

 Cadulus (Cadulus) exiguus Watson, 1879, page 145. 

 Cadulus (Cadulus) obesus Watson, 1879, page 146. 

 Cadulus (Cadulus) cucurbitus Dall, 1881, pige 146. 



