180 
MARINE SHELLS OF WEST COAST OF NORTH AMERICA 
and the pearly interior. Shell nearly twice the size of the typical, and 
more elevated. Height of type, 40; of the base, 36 mm. (Oldroyd.) 
Type in collection of Rev. G. W. Taylor, Stanford University. Type 
locality, Hope Island at the north end of Vancouver Island. 
Range. Known only from the type locality. 
Subgenus Omphalius Philippi, 1847 
Tegula aureotincta Forbes, 1850 
Proceedings, Zoological Society of London, 271; PI. 11, fig. 7. Tryon and Pilsbry, 
Manual of Conchology, 11:172; PI. 27, figs. 31, 32, 33. 
T. testa obtuse pyramidali, crassa, spira mediocri, anfractibus 4 vel 5, 
convexiusculis, obtuse, angulatis, subcanaliculatis, spiraliter 1-2 late sul- 
catis, striis spiralibus minutis, longitudinalibus minutissimis sculptis, colore 
nigro obscure minutissimeque griseo-lineato, ultimo anfractu basi sub- 
planato 4-5 sulcis profundis spiralibus sculpto, margine obtuse subangulato, 
umbilico profunde perforato, laete aurantio, apertura subrotunda, labro 
externo tenui, nigro marginato, labro columellari albo 1-2 dentato, dentibus 
inaequalibus munitis, dente inferiore minimo, fauce albo-margaritaceo. 
Alt-, Vio; Ut. max., 1; alt. apert., 4 / 10 unc. (Forbes.) 
Shell umbilicate, conoidal, thick, solid, black or cinereous; spire conical, 
apex generally eroded; sutures impressed; whorls about five, convex, 
spirally coarsely ridged below, radiately plicate above; the revolving 
ridges five in number, the folds of the upper surface disappearing with 
age; base rounded, concave round the umbilicus; periphery rounded; aper¬ 
ture oblique; columella with a blunt tubercle in the middle and a smaller 
one below it, slightly reflexed above, joined to the upper margin by a 
heavy white callus extending across the parietal wall; umbilicus wide, 
deep, bright orange-colored within. Alt., 38; diam., 35; alt., 22; diam., 
26 mm. (Tryon and Pilsbry, Manual of Conchology.) 
Type in? Type locality ? 
Range. Santa Barbara Islands, California, to Magdalena Bay, Lower 
California. Fossil: Santa Barbara and San Pedro. 
Tegula impressa Jonas, 1848 
Conchylicn Cabinet, 2d ed., “Trochus,” 318; PI. 45, fig. 6. Tryon and Pilsbry, Manual 
of Conchology, 11:185; PI. 63, figs. 8, 9. 
Tr. testa conica, perforata, nigra; anfractibus planiusculis, in parte 
superiore undatoplicatis, ct, praesertim in interstitiis transverse sulcatis, 
ultimo rotundato-undulato; basi tenuiter et confertim concentrice striata; 
apertura suborbiculari; columella arcuata, basi dentibus duobus terminata, 
superius in lobum brevem, partem umbilici cingentem, contenuata. 
1 782] 
