THE NAUTILUS. 93 



introduced one as it has not yet been noticed in any part of 

 Vancouver Island other than in Victoria, and the specimens 

 resemble British ones in every respect save that the milky slime is 

 not nearly so copious. The principal varieties occurring here are 

 those that Mr. Cockerell would call sylvaticus and varians. I have 

 appended to this note a list of the Terrestrial Mollusca of Vancouver 

 Island as at present known to me. Further information concerning 

 their occurrence may be found in my paper above referred to, a copy 

 of which I shall forward with pleasure to any conchologist who may 

 desire it, so long at least as my stock holds out. 



GENERAL NOTES. 



Pupa Holzingeri Sterki, in Ohio. Three, specimens of this 

 species occurred among other small species collected last spring at 

 Put-in-Bay Island, Lake Erie. A comparison with specimens 

 received from Dr. Sterki leaves no doubt in my mind as to the 

 identification. — Bryant Walker, Detroit, Micji. 



Unio complanatus Sol. in Northern Michigan. In the 

 Nautilus for June 1889 (vol. 3, p. 16) I recorded the discovery of 

 an isolated colony of this species at Ocqueoe Lake, in the northern 

 part of the lower peninsula, and queried as to how it got there. 

 Since then I have found the species in the St. Mary's river at Lime 

 Island, Michigan. The occurrence of the species at this locality 

 would seem to make it probable that it will be found quite generally 

 distributed through the upper peninsula and also affords an expla- 

 nation f(jr the existence of the Ocqueoe colony. — Bryant Walker, 

 Detroit. 



New Japanese Shells. Terehra Stearnsii, n. sp. Shell large, 

 much elongated, having 22 whorls remaining, the apical portion 

 (probably i the entire length) being broken oft'. The whorls are 

 narrowly but distinctly shouldered just below the suture. The sur- 

 face of the body-whorl is divided into three subequal j^arts by two 

 spiral grooves, and below the lowest of these grooves there are sev- 

 eral others. Base cut by about 15 unequal impressed lines ; growth- 

 stride faint. Whitish, with a single series of brown spots. Total 

 length 105, breadth ITJ mm. ; length of aperture 12, breadth 7 

 mm. 



Thylacodes medime n. sp. Shells large, generally clustered, 

 resembling Thylacodes polyphragma Sassi, of the Mediterranean, but 



