3 
random for the single reason that a genus is comprehensive anti- 
cipates a critical disentangling of the taxonomic questions, which 
must be based on morphological facts obviously stated, and is, to 
speak with Pilsbry in a similar connection, “neither good science 
nor sound ethics” and only encumbers the subject with mean- 
ingless names. 
In illustrating the new species I have had a valuable help in 
Mr. G. Liljevall, whose skilful hånd has drawn plate-figs. 3, 15, 
24, 26, 28 and 36 — 39, as also the text-figures 1, 2, 23. 
The collections belong to the University Museum of Copenhagen. 
List of Localities of Marine Mollusca. 
N orth Island: 
1. Three Kings Islands, 65 fathoms, hard bottom, dredge. 5/1 1915. 
2. Cape Maria van Diemen, 10 miles N.W., 50 fms, hard bot¬ 
tom, dredge. 4/1 1915. 
3. Cape Maria van Diemen, the coast, shaken from algae. 4/1 1915. 
4. 2 miles E of North Cape, 55 fms, hard bottom, dredge. 2/1 1915. 
5. North Cape, the coast, under stones. 3/T 1915. 
6. Bay of Islands, 2 fms, on Fucaceae with Bryozoa and Hy- 
droids. I/l 1915. 
7. Bay of Islands, the coast, under stones. 31/12 1914. 
8. — , muddy estuary. 1/1 1915. 
9. Cape Brett, the coast, on rocks among Corallinae. 31/12 1914. 
10. Little Barrier Island, 30 fms, shell bottom, dredge. 29/12 1914. 
11. Hauraki Gulf (North Channel, Kawaii Isl., Moko Hinau Isl., 
Hen & Chickens Isl., Puhoi Rock). 
1 la. North Channel, Kawaii Isl., 10 fms, hard bottom. 29/12 1914. 
11b. Moko Hinau Isl., 5 fms. 30/1 1914. 
1 Ic. Hen & Chickens Isl., 50 fms, hard bottom, dredge. 30/12 1914. 
Ild. Puhoi Rock, the coast, under stones. 29/12 1914. 
12. Ponui Island, the coast, under stones. 24/12 1914. 
13. Tiri-Tiri, 15 fms, mud, dredge. 29/1 1915. 
14. Takapuna Beach, the coast, under stones. 23/12 1914. 
15. Rangitoto, the coast, under stones. 27/12 1914. 
16. Colville Channel, 35 fms, sand, mud, dredge. 21/12 1914. 
17. Slipper Island, the coast, at low water. 20/12 1914. 
!• 
