THE NAUTILUS. 



Whorls 6, 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; eolumella orange-yellow, flexuoiis, 

 abruptly terminating in a thin, slightly curved lamellar plait. 



Length, 25 ; diam. 12 nun. 



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 thr int<'uM nf tlir Isaac Lea Conchological Om^tcr i>f Hir Agassiz Associa- 

 tion by its General Secretary, Mrs. M. Burton Willia 



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 L'TO 

 Markham St., Toronto, Canada. 



In the January number of THE NAUTILUS 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 uill not only be 

 found helpful to members of our chapter residing on the Pacific 

 Coast, but useful to all members interested in the Molluscan fauna' 

 of the coast. The bulletin shows great care in bringing the nomen- 

 clature up to date. The class! firati idopted by Dr. \V. II. Call 



in liis " 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 ( 'lark Co., Toronto, 

 Canada. 



Another new name is added to our membership roll, Mr. Leon 

 Walker, Chelsea, Mass. Members will please notice that additions 



