PLATE XXII. 



PAGE 



Fig. 115. Martesta clausa. Magnified. 145 



Fig. 116. Turnus plenus. Natural size. 146 



Fig. 117. Solen paralleltjs. Natural size. 146 



Fig. 118. Pharella alta. Magnified. 147 



Fig. 119. Panop^ea concentrica. Natural size. 148 



Fig. 120 ? Corbula primorsa. Magnified. 148 



Fig. 121. C. Traskii. Magnified. 149 



Fig. 122. C. cultriformis. Magnified. 149 



Fig. 123. Pholadomya Brewerii. Natural size. 152 



Fig. 125. Ne*:ra dolabr^eformis. Magnified. 153 



Fig. 126. Anatina lata. Natural size. 151 



Fig. 127. Mactra Ashburnerii. Natural size. 153 



Fig. 128. Ltjtraria truncata. Natural size. 154 



Fig. 129. Asaphis undulata. Magnified. 154 



Fig. 130. ? Gari texta. Natural size. 155 



Fig. 131. Tellina longa. Natural size. 155 



Fig. 132. T. Remondii. Natural size. 156 



Fig. 133, a. T. Hoffmanniana. Natural size. 156 



Fig. 134. T. monilifera. Natural size. 157 

 a. Magnified view of posterior end. 



Fig. 135. T. ooides. Natural size Martinez. 157 

 135, a. Cast of same species from Pence's ranch. 



