HALIOTIS. 81 



Coast Shells, p. 94. — H. nodosa Philippi, Zeitschr. f. Mai. 1845, p. 

 149 ; Abbild. u. Beschreib. ii, p. 69, t. 5, 6, fig. 1. 



Distinguished by the corrugated-nodose outer surface, orbicular 

 and strongly convex form, and the deep channel revolving below the 

 row of perforations. 



H. fulc4ens Phillippi. PI. 12, figs. 61, 62. 



Shell large, oval, quite convex, sculptured all over with equal 

 rounded cords or lira? ; of a reddish-brown color. Generally five 

 holes are open. 



The form is oval, as in the other American Haliotis, the back 

 quite convex. It is solid, but thinner than H. rufescens. The out- 

 side is a uniform dull reddish-brown. It is sculptured with rounded 

 spiral lira?, nearly equal in size, 30 to 40 in number on the upper 

 surface. At the row of holes there is an angle, the surface below it 

 sloping almost perpendicularly to the columellar edge, and having 

 an obtuse keel about midway. The spire does not project above the 

 general curve of the back. Inside dark, mostly blue and green 

 with dark coppery stains, pinkish within the spire ; the muscle im- 

 pression painted in a peculiar and brilliant pattern, like a peacock's 

 tail. Columellar plate wide, flat, sloping inward. Cavity of the 

 spire small, almost concealed. Perforations rather small, elevated, 

 circular, about 5 in number. 



Length 170, width 130, convexity 48 mill. 



Lower California and California, northward to Monterey Bay. 



H.julgens Phil. Zeitschr. f. Mai. 1845, p. 150 ; Abbild u. Bes- 

 chreib. ii, p. 220, t. 7 ; t. 8, f. 1. — Weinkauff, Conchyl. Cab., p. 

 24, t. 7, 8. — H. splendens Reeve, Conch. Icon., f. 9 ; Proc. Zool. 

 Soc. Lond. 1846, p. 54. And of authors generally. — H. planilirata 

 Rve. Conch. Icon., f. 62 (young). 



This magnificent shell has long been known under the name of H. 

 splendens. Philippi's publication Avas before Reeve's, as the brothers 

 Adams and Weinkauff have already announced. The restoration 

 of the oldest name becomes therefore simply a matter of justice and 

 necessity. 



It is a thinner species than H. rufescens, with darker interior and 

 different sculpture. The mingling of tints upon the great muscle- 

 scar is indescribably rich and effective. 



The H. planilirata of Reeve (pi. 19, fig. 9) is a young shell of 

 this species. 

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