PLATE XXXI. 



TRIGONIA DAWSONI, Whiteaves, (page 231). 



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



" 1 a. 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. Another individual, from the same locality, in which the posterior 

 extremity is more narrowly cuspidate. 



NEMODON FISCHERI, d'Orbigny, (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 the 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 b. Do. 



OXYTOMA MUCRONATA, Meek, (page 238). 

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



