CLASS GASTROPODA 
233 
nodules, reddish; spire small; outer lip at the top gibbous; inner lip 
narrow; perforations elevated, remote, only three or four open. In pro¬ 
portion as the back of the shell is worn down, the color becomes a brighter 
red. It attains to a very large size, and when in perfection is a beautiful 
species. Inhabits the Galapagos and California. (Swainson.) 
Shell large, heavy and solid, oval, not very convex; sculpture con¬ 
sisting of unequal spiral cords and threads and wide, low, radiating waves; 
color dull red; holes three or four. The shell is very large, sometimes 
attaining a length of nine inches; it is thick and heavy, covered outside 
with a thick, brick-red layer which projects at the edge of the lip forming 
a narrow, coral-red edge. The spiral cords are unequal in size, and finer 
than in H. fulgcns; the waves of the surface are large and oblique. Below 
the row of holes there is a depression, followed by a low ridge bearing 
usually large, obtuse tubercles. The spire does not project above the 
general curve of the back. Inside the nacre is lighter than in either 
H. fulgens or corrugata, and the play of tints not so much broken. The 
colors are chiefly pink and light green, with here and there a small area 
of prussian blue. The muscle scar is large, peculiarly and variously striped 
with olive-brown, green, and blue; a portion of it is roughened by coarse 
raised cords which take a spiral direction. The columellar plate is rather 
narrow, its lower part sloping inward somewhat. Perforations large, some¬ 
what tubular, three or four open. Length, 185; width, 150; convexity, 
40 mm. (Tryon and Pilsbry, Manual of Conchology.) 
Type in Bligh Collection. Type locality, California. 
Range. Bodega Bay, California, to La Paz, Lower California. 
Haliotis fulgens Philippi, 1845 
Zeitschrift fur Malakozoologie, 150. Conchologia Iconica, Haliotis, fig. 9. 
H. testa maxima, ovata, convexa, sulcis transversis superficialibus ex- 
arata, rubra; spira parva, laterali; foraminibus parum tuberlosis, sates 
magnus; margine sinistra baud prominente; margarita pulcherrima, viridi, 
fusco mixta. Long., 7; lat., 5j/$ ; alt., 2*4 poll. (Philippi.) 
Ab affini H . gigantea Chemnitzii distinguitur testa magis convexa, 
foraminibus parum tuberlosis et margarita pulcherrima viridi, quae mar- 
garitam H. iris superat, cum H. gigantea margaritam albam, argenteam 
habitata, H. iris margine sinistro ptominente, spira perpendiculari, sculp- 
tura et colore dorsi differt. (Philippi.) 
Shell large, oval, quite convex, sculptured all over with equal rounded 
cords or lirae; of a reddish-brown color. Generally five holes are open. 
The form is oval, as in the other American Haliotis, the back quite convex. 
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