UNIDENTIFIED LIMPETS. 157 



28, breadth 22 mill. (H. & J. Ann. Sci. Nat. (2), xvi, p. 190, 



1841.) 



Island of Mangareve. 



P. OBSCURA Hombron & Jacquinot. 



Shell elevated-elliptical, convex, obliquely conical, blackish-brown, 

 lightly tessellated with whitish. 



Inside bluish- white, the cavity reddish-black. Vertex excentral, 

 subobtuse. Margin entire, encircled by a black zone within. Length 

 26, breadth 20 mill. (H. & J. in Ann. des Sci. Nat. (2) xvi, p. 191, 

 1841.) 



Talcahuano, Chili. 



Evidently an Acmcea or a Scurria. 

 P. LUCTUOSA Hombron & Jacquinot. 



Shell very angular, star-shaped, elliptical, rough, brown-black; 

 with separated radiating ribs, of which 5 are principal and 9 or 10 

 adjunct, all extending beyond the margin. Vertex obtuse, excen- 

 tral. Inside shining, white-bluish; margin angular, black-zoned. 

 Length 33, width 28 mill. (H. & J. in Ann. Sci. Nat. (2) xvi, p. 



191, 1841). 



Mindanao. 



May be the same as Acmcea saccharina. 

 P. CRUENTATA Hombron & Jacquinot. 



Shell oval, convex-depressed, white, painted with white and brown 

 radiating bands, ribs close, numerous, radiating; vertex brown- 

 blackish, acute, central : margin unequally undulating, subdenticu- 

 late ; inside pearly, deeply blood-stained. Length 24, breadth 19 

 mill. (H. & J., Ann. Sci. Nat. (2), xvi, p. 191, 1841.) 



New Guinea. 



PATELLOIDES ANTARCTICA Hombron & Jacquinot. 



Shell convex-oval, smooth, brownish-olive, painted around the 

 margin with greenish-white bands. Vertex incumbent; inside 

 white in front, sooty behind, the cavity rufo-castaneous ; edge entire, 

 encircled by a black zone spotted with white. Length 31, breadth 

 23 mill. (H. & J. in Ann. Sci. Nat. (2), xvi, p. 192, 1841.) 



Auckland Is. 



P. CALLOSA Hombron & Jacquinot. 



Shell oval, depressed ; radiately painted with black and white 

 bands ; inside white, the depth thickened, callous, white. Apex ele- 



