THE NAUTILUS. 23 



Columbella californiana Gask. One living specimen taken 

 from root of kelp washed ashore in storm. Common under 

 rocks at Waterfall. 



Amphissa corrugata Rve. Common on rocks near low tide 

 line. 



Amphissa versicolor reticulata Dall. Abundant 15-20 fathoms. 



Purpura foliata Mart. Rather common on rocks near low 

 tide line. Most specimens on Forrester Island are much worn 

 by heavy seas. 



Boreotrophon stuarti Smith. Boreotrophon tenuiscidptus. Cpr. 

 Both of these forms dredged occasionally in various depths, the 

 latter the most plentiful. 



Boreotrophon padficus Dall. Occasional on rocks near low tide 

 line, much more abundant at waterfall. 



Ocinebra interfossa Cpr. Ocinebra lurida aspera Baird. Fairly 

 common on rocks near low tide line. 



Thais emarginata projecta Dall. Locally on rocks well up to- 

 ward high tide mark. Extremely variable in color, running 

 from gray through brown, purple and green into yellow and 

 red. Practically all seem to have drawn-out spire typical of 

 this form. 



Thais lima Mart. Thais canaliculata Duel. Both these species 

 are common on the rocks near low tide line. The former is the 

 more gregarious and appears to favor the smoother rocks, while 

 the latter is more scattered and is found mostly among short 

 moss or in mussel beds. T. lamellosa Gmel., abundant in in- 

 side waters, apparently does not occur on Forrester Island. 



Epitonium wroblemski Morch. Epitonium pluricostatum Dall. 

 Both dredged at various depths, the former common, the latter 

 rare. 



Epitonium gronlaudicum Perry. Only noted from fragment 

 dredged. 



Epitonium indianorum Cpr. Epitonium columbianum Dall. 

 Epitonium catalinae Dall. The first dredged quite commonly in 

 25-60 fathoms. The latter two taken in about same depths but 

 much less frequently. 



Melanella micans borealis Bartsch. Melanella macra Bartsch. 

 Melanella tacomaensis Bartsch. Four specimens of the first, 



