PLATE XV. 



PAGE 



Fig. 113. Chilodon C7icnll7ih(s, x 350, - - - - 72 



Fig. 114. Chilodoi caudalus, x 620, . - . - 73 

 Fig. 115. Chilodon caiidahis, lateral view of posterior ex- 

 tremity, X 800, ------ 73 



Fig. 116. Chilodon fluviatilis, x 620, - - - - 73 



Fig. 117. ^^gyria sp. (?), x 350, ----- 74 



Fig. 118. Tnc/wda ptira, x 1300, ----- 74 



Fig. 119. Lcucop/irys patula, x 250, ----- 75 



