32 THE NAUTILUS. 
Whorls 63, somewhat convex; suture well impressed. Aperture 
ovate, a little oblique, of an orange yellow color within; peristome 
simple, acute, not thickened within, extremities united by a thick, 
orange tinted, parietal callosity ; columella orange-yellow, flexuous, 
abruptly terminating in a thin, slightly curved lamellar plait. 
Length, 25; diam. 12 mm. 
Habitat, Island of Lanai. 
Animal when extended in motion as long as the shell. Mantle 
dark slate, margined on the outer edge with reddish-brown. Foot 
above and below very dark-brown, the sides studded with large 
patches of darker hue, the posterior portion tinged with red. The 
head above and tentacles covered with almost black granulations. 
The prominent features of this shell are its elongate form and 
orange colored aperture. 
ISAAC LEA DEPARTMENT. 
[Conducted in the interest of the Isaac Lea Conchological Chapter of the Agassiz Associa- 
tion by its General Secretary, Mrs. M. Burton Williamson. ] 
The first week in May, the vol. of Transactions crossed the Rocky 
Mountains on its way east. Our members in the Eastern States 
have been very patient in awaiting its arrival. The address of Mr. 
James H. Lemon has been changed from 134 Grange Ave., to 270 
Markham St., Toronto, Canada. 
In the January number of THe Navurixus the Editors noted the 
publication of the Reverend George W. Taylor’s, “ Preliminary 
Catalogue of the Marine Mollusks of the Pacific Coast of Canada, 
with notes on their Distribution.” This Catalogue will not only be 
found helpful to members of our chapter residing on the Pacific 
Coast, but useful to all members interested in the Molluscan faunze 
of the coast. The bulletin shows great care in bringing the nomen- 
clature up to date. The classification adopted by Dr. W. H. Dall 
in his “ Marine Mollusks of the S. E. Coast of the United States,” 
has been followed by Mr. Taylor. The Catalogue is for sale by 
John Durie & Son, Ottawa, and The Copp Clark Co., Toronto, 
Canada. 
Another new name is added to our membership roll, Mr. Leon 
Walker, Chelsea, Mass. Members will please notice that additions 
