94 HALIOTIS. 



is continued further than usual around the spire, and is very wide 

 and flat at its junction. The description above applies to Philippi's 

 H. decussata. The typical rosacea is described by Reeve as " mar- 

 bled with deep coral-red punctured with green." Besides the spec- 

 imens figured there are others before me obliquely streaked with 

 green, yellow, red and white, much as in the H. diversicolor of 'Reeve. 

 The original figure of rosacea is given on pi. 24, fig. 65. Figs. 59- 

 64 of the same plate represent color-varieties in the collection of the 

 Academy. Fig* 62 is Philippi's original of decussata. 



This species, as well as others, has been supposed by some authors 

 to represent the H. virginea of Chemnitz. 



Yar. striata Reeve. PI. 50, figs. 3, 4, 5. 



This is the " H tubercidata" of Dunker's Moll. Guin. Infer. It has 

 been referred by TVeinkauff to tubercidata as a variety, but it prob- 

 ably belongs here. It is of a yellowish color, marbled with red and 



spadiceous. 



Lower Guinea. 



" It is Haliotis tubercidata var. striata Martini" of Weiukauff" H 



striata Linn" of Reeve (Conch. Icon., f. 58). The true striata of 



Linnseus cannot be identified. Sowerby calls the variety "marmor- 



ata Linn." — Another unidentifiable form. 



H. rubiginosa Reeve. PL 17, fig. 92. 



Shell ovate, rather convex, radiately plicately wrinkled, spirally 

 ridged, ridges obtusely scaled ; perforations rather approximated, six 

 open. Exterior rusty orange spirally streaked with white. 



Besides the peculiarity of sculpture it is very fairly characterized 

 by its rusty orange painting and silvery interior. (Reeve.) 



Habitat unknown. 



H. rubiginosa Reeve Conch. Icon., f. 45, 1846. — Sowb. Thes. 

 Conch, v, p. 30, f. 71. 



H. astricta Reeve. PL 4, fig. 19. 



Shell ovate, convex, spirally ridged, radiately crossed with ir- 

 regular raised stria? and laminae ; four perforations open. Exterior 

 marbled with white and olive-green, interior iridescent. Dis- 

 tinguished by the strong decussating sculpture of the cross-ridges. 

 (Reeved) 



Habitat unknown. 



H astricta Reeve Conch. Icon., t. 13, f. 41, 1846.— Sowb. Thes. 

 Conch., p. 28, f. 83. 



