NORTHWEST COAST MARINE SHELLBEARING MOLLUSKS. 215 



Pane 



Figure 9. Aulacofusus trophius Dull, alt. 32 mm 95 



10. Mohnia exquisita var., Dall, alt. 31 mm 92 



11. Mohnia exquisita typical, Dall, alt. 27 mm 92 



12. Mohnia robusta Dall, alt. 33 mm 91 



Figures 6, 7, and 9 drawn by the late Doctor J. C. McConnell, the others 



by Miss Evelyn Mitchell. 



Plate 11. 



Figure 1. Trichotropis kroyeri, Philippi, alt. 30 mm 149 



2. Trichotropis (Iphinoe) coronata Gould, alt. 24 mm i__ 149 



3. Volutomitra alaskana Dall, alt. 43 mm 87 



4. Alectrion (Schizopyga) californiana Conrad, alt. 33 mm 102 



5. Neptunea pacifica Dall, alt. 24 mm 110 



6. Turris (Aforia) circinata Dall, alt. 85 mm. Note the anterior 



sulcus in the outer lip G8 



7. Suavodrillia kennicottii Dall, alt. 21 mm 69 



8. Tritonalia interfossa Carpenter, typical ; alt. 21 mm 108 



9. Amphissa columbiana Dall, dwarfish northern form, alt. 22.5 mm. 105 



10. Amphissa versicolor incisa Dall, alt. 13 mm 105 



11. 'Neptunea tenuisculpta Carpenter, frilled form, alt. 19 mm 111 



12. Neptunea tenuisculpta Carpenter, typical, alt. 22 mm 111 



All these figures drawn by the late Doctor J. C. McConnell. 



Plate 12. 



Figure 1. Buccinum oedematum Dall, alt. 56.2 mm T 99 



2. Buccinum eugrammatum Dall, alt. 55.5 mm 98 



3. Buccinum rondinum Dall, alt. 18 mm 99 



4. Plicifusus elaeodes Dall, alt. 54 mm. (Japan, extralimital?). 



5. Cryptoconus tremperianus Dall, alt. 64 mm 68 



6. Buccinum sigmatopleura Dall, alt. 59 mm 100 



7. Lati-sipJio jordani Dall, alt. 45 mm 90 



8. Volutopsius limatus Dall, not quite mature, alt. 52 mm. (Japan). 



9. Buccinum orotundum Dall, alt. 60 mm 99 



10. Mohnia corbis Dall, alt. 30 mm 91 



11. Mohnia siphonoidea Dall, alt. 37 mm 92 



12. Buccinum fucanum Dall, alt. 45 mm 100 



All these figures drawn by Miss Evelyn Mitchell. 



Plate 13. 



Figure 1. Neptunea multicostata Eschscholtz, alt. 27 mm 110 



2. Iselica fenestrata Carpenter, alt. 6 mm 155 



3. Murex (Triremis) santarosana Dall, lat. 28 mm 106 



4. Murex {Triremis) santarosana Dall, alt. 45 mm 106 



5. Murex (Pteropurpura) carpenteri Dall, alt. 54 mm 106 



6. Neptunea scitula Dall, alt. 40 mm 109 



7. Metzgeria califomica Dall, alt. 14 mm 88 



8. Neptunea smithi Dall, alt. 40 mm 111 



9. Tritonalia interfossa alpha Carpenter, alt. 25 mm 108 



10. Acirsa borealis Beck, alt. 23 mm 114 



11. Opalia varicostata Stearns, alt. 60 mm. (fossil). 



12. Tritonalia lurida aspera Carpenter, alt. 18 mm 107 



Figures 3, 4, and 6 drawn by Miss Evelyn Mitchell, the others by the 



late Doctor J. C. McConnell. 



