103 



79. medium, Linn. 103. 



80. Mindanense, Reeve. 104. 



81. rnodestum, Adams. 105. 



82. Mortoni, Conr. 106. 



83. multipunctatum, Sow. 10 7. 



84. multispinosum, id. 108. 



85. mundum, Reeve. 109. 



86. muricatum, Linn. 110. 



87. muticum, Reeve. 111. 



88. nebulosum, id. 112. 



89. nivale, id. 113. 



90. nodosum, Mont. 114. 



91. Nuttallii, Conr. 115. 



92. oblongum, Z/wm. 116. 



93. obovale, Sow. 117. 



94. orbita, id. 118. 



95. ovale, id. 119. 



96. oviputamen, Reeve. 120. 



97. ovuloides, m?. 121. 



98. oxygonum, Sow. 122. 



99. pallidum, Reeve. 123. 



100. papillosum, Poll. 124. 



101. paucicostatum, Sow. 125. 



102. Panamense, irf. 126. 



papyraeeum, Chemn. 

 pectinatum, TAnn. 

 Pennantii, Beck. 

 pinnulatum, Conr. 

 planicostatum, Sow. 

 plicata, Eich. 

 procerum, id. 

 pseudocardia, Desh. 

 pseudo-fossile, Reeve. 

 pseudo-lima, Lam. 

 pulchellum, Reeve. 

 pulclmvm, id. 

 pubcarium, id. 

 quadrarium, id. 

 radiatum, id. 

 retusum, Linn. 

 rigidum, Wood. 

 ringens, Cliem. 

 ringiculum, Sow. 

 rubicimdum, Reeve. 

 rubrum, Mont. 

 rugatura, Gron. 

 rugosum, Lam. 

 rusticum, Linn. 



127. senticosum, Sow. 



128. sen'atum, Linn. 



129. setosum, Red/. 



130. Sinense, Sow. 



131. speciosa, Adams. 



132. stellatum, Reeve. 



133. striatulum, Soio. 



134. subelongatum, id. 



135. sub retusum, id. 



136. subrugosum, id. 



137. substriatum, Conr. 



138. Suedieuse, Reeve* 



139. sulcatum, Cmel. 



140. tenuicostatum, Lam. 



141. trigonoides, Pall. 



142. tumoriferum, Lam. 



143. unedo, Linn. 



144. unicolor, Sow. 



145. miimaculatum, id. 



146. variegatum, id. 



147. vertebratum, Jonas. 



148. virgo, Reeve. 



149. vitrea, Fieh. 



150. vitellinum, id. 



Figure. 



Cardium echinatum. PI. P. Shell, with animal, showing the large 

 geniculate foot and short pouting siphonal orifices. 



Cardium Asiaticum. PI. 36. Pig. 194. Shell, illustrative of the glo- 

 bose ribbed form of the genus, showing the cardinal and wide-spread 

 lateral teeth. 



Genus 4. ISOCARDIA, Lamarck. 



Animal; globose, rather small compared with the shell, open in 

 front for the passage of a compressed triangularly pointed foot, 

 and behind for two sessile orifices edged with a ciliary fringe. 



* Having been the first to describe this species, which forms part of our British Fauna, I re- 

 gret that Professor Loven, followed by Forbes and Hanley and by the Messrs. Adams, have con- 

 sidered it necessary to alter my name of Suediense to Suecicum. If they had turned to their 

 Ainsworth they would have found that Suedia is as good Latin for Sweden as Suecia, and Sue- 

 diense, therefore, as Suecicum. 



