THE NAUTILUS. 119 



GENERAL NOTES. 



ZoNiToiDES ARBOREUS (Say) IX Japan. — In a recent lot of shells 

 sent by Mr. Hirase, there are specimens of this common North Amer- 

 ican species, from Tokyo. The shells are quite indistinguishable 

 from American specimens. One with the soft parts dried in enabled 

 me to compare the dentition, which proves to be substantially that of 

 the American species, the formula being 20.6.1.6.20. In a Philadel- 

 phia arboreiis examined there are 19.6.1.6.19 teeth, the shapes of the 

 individual teeth being the same in both. A slender, nearly straight 

 dart, in a club-shaped sack, was found in the Tokyo specimen. 



The form described by me as Z. subarboreus, from Hachijo island, 

 Izu, is distinguishable chiefly by the somewhat larger size, and the 

 same seems to be true of II. yessoensis Reinh., described from Hako- 

 date, which is probably also a Zonitoides, but I have not yet seen 

 specimens H. A. Pilsbry. 



1 have recently found a very fine reversed specimen of Polygyra 

 profunda Say in Hamilton Co., Ohio, not far from Laurenceburg. — 



A. C. BiLLUPS. 



At the December meeting of the Section on Conchology of the 

 Brooklyn Institute, the president of the Section, Dr. R. Ellsworth 

 Call, exhibited a reversed specimen of Mesodon exoleta, which is very 

 rare in that form. 



Mr. Wm. H. Weeks, Jr., reported on a collecting trip on the coast 

 of Maine, as follows : 



" Shell Collecting on Cliff Island, Cusco Bay, Maine. — So much 

 has been said regarding the conchologist at Casco Bay that little can 

 be added. The writer spent a most delightful ten days at Cliff Is- 

 land during last August and much of that time was spent in hunting 

 mollusks. Shore collecting gave fine suites of Purpura lapilhts, Lit- 

 torina palliata, Littorina littorea, Littorea rudis, Acmaea testudinalis 

 and Macoma fusca. A diligent search on shore for the famous 

 Buccinum undatum revealed only dead specimens, but fishermen 

 brought in fine suites found in lobster traps, also fine specimens of 

 Neptunea deceincostata and Sipho islandicus found well out to sea. 

 Dredging gave sparingly such forms as Astarte sulcata, Nucida prox- 

 ima, Lyonsia hyalina, Nassa trivittata, Pecten magellanicus, Modiola 

 modiolus, etc. Polinices heros was obtained at low tide well off shore 



