PLATE XXXl. 



Trigonia Dawsoni, Whiteaves, (page 231). 



Figure 1. Left valve of a specimen from the Iltasyouco Eiver, B.C. 



" 1 «. Right valve of a specimen from the south side of Alliford Bay. 

 Note. — This species, as stated on page 261, appears to be synonymous with. 

 Trigonia intermedia, Fahrenkohl. 



Trigonia Maudensis (page 230). 



Figure 2. Side view of a right valve of the most perfect specimen collected by 

 Dr. G. M. Dawson, from the north side of Maud Island. 



NucuLA soLiTARiA, Gabb, (page 232). 



Figure 3. Side view of a cast of the interior with a small portion of the test 

 remaining, slightly enlarged. From the south side of Alli- 

 ford Bay. 

 " 3 a. Outline of the same specimen as viewed in front. 



YoLDiA ARATA (page 233). 



Figure 4. Lateral view of a specimen from South Island, somewhat enlarged , 

 and showing the right valve. 

 " 4 a. Anotlier individual, from the same locality, in which the posterior 

 extremity is more narrowly cuspidate. 



Nemodon Fischeri, d'Oi'bigny, (page 234). 

 Figure 5. Side view of a perfect left valve from the east end of Maud Island. 



Trigonoaroa tumida (page 235). 



Figure 6. A perfect right valve of this species from the east end of Maud 

 Island. 



Mytilus lanceolatus, J. Sowerby, (page 236). 



Figure 7. Lateral view of a cast of the interior, from Shingle Bay, showing 

 the left valve. 

 Outline of the base of tlie same specimen. 



Grammatodon inornatus, Meek & Hayden, (page 235). 



Figure 8. Side view of a specimen from Cushewa Inlet. 



" 8 a. " " " the south side of Alliford Bay, in 



Skidegate Inlet. 

 " 8 h. Do. 



OxYTOMA MUCRONATA, Meek, (page 238). 

 Figure 9. A left valve from the east side of Alliford Bay. 



