Plate 30 
This plate from Proceedings of the United States National Museum, except 
Nos. 11, 11a, 12, 12a, and 12 b. 
FIGURE PAGE 
1. Mure. r rhyssa Dali. 9 
2. Tritonalia hit erf ossa Carpenter . 21 
Typical. 
3. Trophon tcnuisculptus Carpenter . 39 
4. Trophon pact ficus Dali. 35 
5. Tritonalia barbarensis Gabb . 25 
6. Trophon beringi Dali. 33 
7. Trophon tcnuisculptus Carpenter . 39 
Frilled. 
8. Trophon rotiindatus Dali. 29 
9. Trophon cucymata Dali. 35 
10. Trophon katnehatkanus Dali.41 
11. lltf. Tritonalia frascri 1. Oldroyd . 25 
Marine Shells of Puget Sound and Vicinity. 
12. 12a, 12/;. Purpura nuttallii aciculigcr Valenciennes. 15 
Re figured type figures from the American Museum of Natural History. 
13. C or alii o phi 1 .0. kincaidi Dali. 50 
14. Trophon orphans Gould. 37 
From type. 
Note—U nless otherwise stated the photographs were made by Crandall, Palo Alto, 
and the specimens are in the Stanford Collection. Natural size. 
