PLATE XXIX. 



TEREDO SUCIENSIS (page 218). 

 Figure 1. Side view of a left valve from Cuinshewa Inlet, somewhat enlarged. 



MABTESIA CARINIFERA (page 219). 



Figure 2. A nearly perfect cast of the interior of this shell) from Bear 



Skin Bay in Skidegate Inlet. 



" 2 o. Portion of a mass of the burrows of this species, from the same 

 locality as the last. 



CORBULA CONCINNA (page 219). 



Figure 3. Exterior of a right valve from the south side of Alliford Bay, con- 

 siderably magnified. 

 " 3 a. Left valve of the same specimen, also enlarged. 



PERIPLOMA CUSPIDATUM (page 220). 



Figure 4. View of a specimen from the north side of Maud Island, in which 



both valves are flattened out. 

 " 4 a. Eight valve of another individual from the north side of Maud 



Island. 

 " 4 b. Left valve of a third specimen from the same locality, 



THRACIA SEMIPLANATA (page 221). 



Figure 5. Exterior of a right valve from the south side of Alliford Bay. 

 " 5 a. " " left " " " " 



" 5 6. " " another right valve from the south side of Alliford 



Bay. 

 " 5 c. Left valve of the same. 



PLEUROMYA SUBCOMPRESSA, typical form, (page 222). 

 Figure 6. A small right valve from the south side of Alliford Bay. 



PLEUROMYA SUBCOMPRESSA, var. CARLOTTENSIS, (page 223). 



Figure 7. Side view of an imperfect specimen from the south side of Alliford 



Bay, showing part of the left valve. 



7 a. Side view of another specimen from the same locality, showing 

 most of the right valve. 



