224 



EXPLANATION OF PLATE 13 

 Figure Page 



74. Papjridea soleniformis (Bruguiere) 68 



75. Laevicardiuin laevigrntum (Linne) 68 



76. Laevicardiuin mortoni (Conrad) 68 



Fig. a. Interior view of both valves. Fig. b. Exterior view. 



77. Dosiiiia elegans (Conrad) 70 



78. Transeiielbi conradiana Dall 70 



79. Transenella cubaniana (d'Orbigny) 70 



79a. Transenella stiiiipsoni Dall 71 



80. Gafrarium cerina (C. B. Adams) 71 



81. Macrocallista nimbosa (Solander) 71 



82. Macrocallista maculata (Linn6) 72 



