182 
MARINE SHELLS OF WEST COAST OF NORTH AMERICA 
Tegula reticulata Wood, 1828 
Index Testaccologicus, Supplement. Tryon and Pilsbry, Manual of Conchology, 
11:176; PI. 29, figs. 63, 64, 68, 69. 
This form is more depressed than C. viridulum and smaller; the base 
is flatter; the periphery carinate; the lirae of the upper surface more 
regular, more distinctly beaded, the interliral interstices with fewer spiral 
striae, often with minute beaded lirulae. Coloration as in C. viridulum, 
consisting of radiating stripes. Aperture and columella tinged with green 
or white. Alt., 15; diam., 18-19 mm. (Tryon and Pilsbry, Manual of 
Conchology .) 
Type in ? Type locality, Gulf of California. 
Range. San Pedro, California, to Panama. 
Tegula mariana Dali, 1919 
Proceedings of the United States National Museum, 56:359. Tryon and Pilsbry, 
Manual of Conchology, 11; Pi. 24, figs. 80-83. 
This is O. coronatus Pilsbry, 1889, not of C. B. Adams, 1852, and 
O. turbinatus Pease, 1869, not of A. Adams, 1851. A new name for the 
species being needed, the above is proposed. (Dali.) 
Type in United States National Museum, No. 4033. Type locality ? 
Range. Santa Barbara Island to Payta, Peru. 
Described as Omphalitis. 
Genus CALLIOSTOMA Swainson, 1840 
Shell imperforate or rarely umbilicate, conical, rather thin; whorls 
smooth, spirally ridged or granular, the last angulated at the periphery; 
aperture quadrangular; columella simple, usually ending anteriorly in a 
slight tooth. (Tryon and Pilsbry, Manual of Conchology .) 
Type. C. ziziphinum L. 
Range. Universally distributed. 
Calliostoma splendens Carpenter, 1864 
Plate 98, fig. 1 
Supplementary Report, British Association for the Advancement of Science, 653. 
Tryon and Pilsbry, Manual of Conchology, 11. Proceedings of the California 
Academy of Sciences, 3:156. 
Orange-chestnut, with fleshy nacre; small, rather flattened, base glossy. 
(Carpenter.) 
C. t. parva, latiore, tenuiore; exquisite rufo-castaneo et purpureo, inter- 
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