TRIBE I. ASTR^ACEA. 
9 
tuberculiferous and tubercles perforate ; upper margin not tuberculate ; tenta- 
cles f of an inch long, filiform (scarcely i of a line thick), in 3 series, crowded, 
the external a little shorter : when contracted, shape rounded-conical. 
Plate 3, fig. 24, three individuals, one of them contracted and the other ex- 
panded, natural size. — Lagoon of Honden Island, attached to a dead Natica. 
— Exp. Exp. 
c. Tentacles shorter than half the disk. 
Actinia paumotensis (Couthouy). — Depressed, exterior smooth, 6 inches 
thick at middle, above very widely dilated (12 inches), upper margin sublobate 
or plicato-undulate, not tuberculate ; tentacles numerous, subequal, nearly 14 
inches long, stout, subulate, covering the larger part of the disk; disk rather 
strongly marked wfith radiating lines, and below faintly tuberculate ; mouth 
but little prominent. 
Plate 3, fig. 25, animal half the natural size, — From the coral reefs, island 
of Raraka, Paumotu Archipelago. 
Actinia mollis {Couthouy). — Body 1 inch in diameter at middle, at base 
sparingly dilated ; disk much dilated, and unequally 5-iobed ; margin crenu- 
late, tentacles numerous, very short, clavate, arranged in about 20 radiating 
triangular groups ; mouth 4-lobed. 
Plate 3, fig. 26, the expanded animal, natural size ; 27, the same in one of 
its positions ; 6, outline of the mouth showing its form.— Lagoon of Clermont 
Tonnerre. — Exp. Exp. 
Actinia achates [Drayton). — Subcylindrical, about an inch through at 
middle, above dilated and profoundly sinuoso-lobate ; lobes 5 or 6 ; exterior 
smooth; tentacles in 3 series, quite short (2 lines) and slender (4 of aline), 
submarginal; mouth a little prominent, 6-partite. 
Plate .3, fig. 28, expanded animal, natural size; a. the disk showing its lobed 
form.— Dredged up in thirty fathoms, off the east coast of Patagonia. 
Actinia papaver [Drayton). — Animal, with the exterior smooth ; body de- 
pressed, 2f inches thick at middle, much dilated above and below (3 inches in 
breadth) ; margin of base faintly crenulate, upper margin not tuberculate, 
scarcely undulate ; tentacles numerous, nearly f of an inch long, stout, subu- 
late, in 3 series ; mouth f of an inch long, prominent. 
Plate 4, fig. 29, animal natural size.— From the rocks exposed to the suri^ 
Wollongong, Illawarra, New South Wales. — Exp. Exp. 
Actinia pluvia [Drayton). — Minutely tuberculate or papillose, at middle 
24 inches in diameter ; upper and lower extremities much dilated (3f inches 
in breadth), margin of base undulate, upper margin not tuberculate; tentacles 
somewhat crowded, in 3 series, 6 lines long, stout, subulate ; disk strongly 
marked with radiated lines ; mouth a little prominent, 6 to 8 lines long% 
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