TRIBE I. ASTRjEACEA. 139 



infra obsoletis ; tentaculis numerosis, fere 1" longis, subfsquis, validis ; 

 ore promincnte, intus k-partito ; disco lineis pallidis radiato. 



Conico-subhemispherical, sparingly dilated at base, sides concentri- 

 cally wrinkled and tuberculate, tubercles small, suctorial, vertically 

 seriate, obsolete .below ; tentacles numerous, nearly an inch long, 

 subequal, stout ; mouth prominent, four-cleft within ; disk radiated 

 with whitish lines. 



Plate 3, fig. 23, natural size; a, disk with the tentacles. 



Saddle Island, entrance of Orange Bay, Terra del Fuego. Exp. Exp. 



This brilliant species, which for its colour may vie with any of 

 its tropical congeners, was obtained at low water among the rocks, 

 where it was buried in the sand, with its tentacles barely visible. 

 When expanded, its form is subconical, the base being consider- 

 ably more dilated than the disk. In contraction, it resembles in 

 form the upper half of a fig. The ground colour is a faint purplish 

 red, on which are numerous longitudinal lines of darker red, which 

 toward the disk deepen into crimson, with a tinge of purple. Be- 

 tween these lines are a series of small perforate sucker-tubercles of a 

 rose-white colour, most apparent near the disk, and disappearing 

 wholly at the basal margin. To these suckers, the sand and small 

 gravel adhered with considerable tenacity. They had a yellow colour 

 when fully expanded, and were -jV of an inch in diameter. The ten- 

 tacles are numerous, long, subulate, (about forty-six were counted,) 

 of an intense blood-red. From their base to the mouth, the colour 

 is a brownish purple, alternating with narrow pale ochreous lines. 

 The mouth is orange-red at base, deepening towards the summit into 

 the colour of the tentacles. When fully expanded, the mouth ex- 

 hibits four distinct protuberances. J. P. COUTHOUY. 



ACTINIA DECORATA. (Couthouy.) 



A. subcylindrica, medio 1J" crassa, basi late dilatata et sinuose lobata, 

 lateribus supra nudis, infra tuber culiferis, tuberculis perforatis ; 

 margine superno non tuberculato ; tentaculis f " longis, filiformibus, 

 (vix '" crassis), 3-seriatis, confertis, externis brevioribus : contractd, 

 conico-rotundata. 



