i31 
P. Pe.iucipa. Lin. 1260.—D. p. 1042-—Lam. 42. 
—Inst. t. 543. f. 27.—Pen. 4. p. 143.—Born. t. 18: 
S.9.—Ch. f. 1620.—F. p. 287.—Elliptic, smooth, 
polished, pellucid, olive, with interrupted sky-blue 
radiating lines; apex near the margin, often obsolete; 
margin entire. Var. (P. Lavis. F. p, 287.—D. p. 
1043.—Pen. 4. p. 144. ¢. 90. f. 151.—List. t. 542. 
f. 26.—P. Ca@rutera. Mont. Sup. p. 152.) coarser, 
thicker, ochraceous with azure lines .0,80. The variety 
is found on the roots, the type, on the leaves of Fuci ; 
common. 
P. VirGIneA. Muller. Z. Dan. t. 12. f. 2,3.—D., p. 
1052.—F. p. 287.— Desh. in Lam. 7. p. 544.—Gimel. 
3711.—P. Parva. Mont. p. 480.—Oval, obtusely 
conical, small, pink, wita numerous reddish radiating 
lines, smooth, more or less pellucid (becoming by age 
opaque and of an uniform colour); apex obtuse, not 
central; margin entire. 0,40...0,30, On stones near 
low water mark, not uncommon. 
P. Testupinauis. Muller and Desh. in Lam.— 
P. Cryprus. Brown, Ill.—P. CuEauannp1. Sow. Lin. 
T. 13. p. 621.—F. p. 287.—Oval, white with red 
brown or purple spots, faintly striated longitudinally 
and still more faintly transversely ; summit obtuse, 
