334 Variation in Shells. [ ZOE 
Var. bicolor. Color very dark horn or brownish, flecked with 
numerous revolving very fine dots or irregular lines, with or with- 
out a very faint band at the periphery. 
Var. tricolor. Irregularly painted with numerous revolving, 
whitish, brownish and chestnut flecks, blotches and stains, with and 
without a band at the periphery. 
Var. albida. Shell of a beautiful translucent milk white, with- 
out stain or blotch. 
Var. albida a. Milk white ground color, very faintly stained 
with light horn, and with poorly defined and fading lines. 
Flelix Kelletti var. redimita Binney. San Clemente Island. 
I call this a variety of A Kelletti on account of the similarity in 
the form and sculpture of the two shells. Mr. Binney, however, 
calls it a variety of A. inéercisa. I believe he bases his opinion on 
the dentition and genitalia. 
Color, reddish brown. It is restricted in its range to San Cle- 
mente Island. . 
Largest specimen: greatest diameter, 25 mm.; altitude, 20 mm. 
‘Smallest specimen: greatest diameter, 16 mm.; altitude, 11 mm. 
Colored varieties of H. redimita. 
B.— Var. casfaneus. Uniform polished chestnut color, darker 
band at the periphery, spire sprinkled with fine ashen specks. 
Var. hybérida. Uniform ash-white color, anda datk band at the 
periphery, flecked with transverse markings and specks of dark 
brown and light chestnut. 
This closes the list of species and varieties restricted in their 
geographical range to the islands. I now add the measurements of 
two species inhabiting the main land and restricted in their distribu- 
tion to the immediate vicinity of Monterey, California : 
Flelix Dupetithouarsi Desh. 
Largest elevated specimen : greatest diameter, 27 mm.; altitude, 
20 mm. 
Largest depressed specimen: greatest diameter, 27 mm.; altitude, 
15 mm. 
Sinallest Specimen : greatest diameter, 19 mm.; altitude, 12 mm. 
Rigid in its dark chestnut coloring, but the band is sometimes ab- 
sent, and in its place a broad fulvus zone encircles the shell at the 
periphery. One of the most variable of our Californian shells in 
size. | 
