24 THE NAUTILUS. 



three of the second and one of the last species, represent all the 

 Melanellas taken during the four seasons spent on the island. 

 They were all dredged. 



2urbonilla lordi E. A. Smith. Dredged occasionally in 25-50 

 fathoms. 



Turbonilla canadensis Bartsch (Proc. U. S. N. M., Vol. 52, 

 p. 640). The type and eight more specimens dredged in 25-50 

 fathoms. 



Odostomia satura Cpr. Odostomia cookeana Bartsch. Odos- 

 tomia amtchitkana Dall. Odostomia vancouverensis D. & B. 

 Odostomia stephensi D. & B. Odostomia columbiana D. & B. 

 Specimens of all of these forms were dredged, though in small 

 numbers. Satura and Amtchitkana were seemingly the most 

 common. At Waterfall I also secured specimens of 0. talpa 

 D. & B., grippiana Bartsch, and willetti Bartsch (Proc. U. S. 

 N. M., Vol. 52, p. 666). 



Priene oregonense Redf. Common from the low tide line to 

 about 15 fathoms. Specimens in former locality are shorter 

 and heavier than those found in deeper water. 



Ceriihiopsis stephensae Bartsch. A few dredged. Specimens 

 of two other, apparently unnamed, species were also taken. 



Bittium filosum Gld. Bittium attenuatum Cpr. Common, the 

 former a little above low tide line and the latter in 10-20 

 fathoms. 



Alvania dinora Bartsch (Proc. U. S. N. M., Vol. 52, p. 678). 

 The type and four additional specimens dredged. 



Alvania carpenteri Wein. Dredged occasionally. 



Rissoina newcombei Dall. Dredged with last. 



Trichotropis cancellata Conr. Rather common from low tide 

 line to about 20 fathoms. 



Trichotropis conica Moll. Two specimens dredged in 50 

 fathoms. Dr, Dall informs me that this is the first record for 

 the Pacific coast. 



Caecum crebricinctum Cpr. Dredged abundantly in 20-30 

 fathoms. 



Veremetus squamigerua Cpr. Abundant on rocks near low 

 tide line. 



Tachyrhynchus lacteolus Cpr. Rather common 50-60 fathoms. 



