144 ZOOPHYTES. 



Minutely tuberculate or papillose, at middle 2 inches in diameter ; 

 upper and lower extremities much dilated (3| 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. 



Plate 4, fig. 30, animal natural size ; a, part of the surface of one 

 of the varieties. 



From rocks, island of San Lorenzo, Callao, Peru. 



This Actinia varies much in colour. Some are bright orange 

 throughout, with the tentacles a little darker, and the disk paler. In 

 others, the tentacles are of a dull red : others, a very pale red, with 

 the mouth a very deep red. In others, the ground colour of the body 

 is a dark brownish-green, papillae bright orange, tipped with small 

 white beads or dots (fig. 30 b). The tentacles are over a line thick at 

 base. The orange or salrnon-coloured species, on an attempt being 

 made to detach it from the rocks, ejected the water from all its ten- 

 tacles to a distance of 2 or 3 feet. J. P. CDUTHOUY. 



ACTINIA KETICULATA. (Couthouy.) 



A. extus kvis et reticulate corrugata, subcylindrica, li" alta et 2J" 

 crassa, cum disco valde dilatato (3"), margine kviter 5-lobato, non 

 tuber culato ; tentaculis numerosis, brevibus (3'"), non turgidis, por- 

 tionemque disci majorem tegentibus, internis paululo majoribus, ore 

 prominulo, 6-8'" oblongo. 



Exterior smooth and reticulately corrugate, subcylindrical, one and a 

 half inches high, and two and a half thick, with the disk very much 

 dilated (3J inches in breadth), and margin somewhat five-lobed, 

 not tuberculate ; tentacles very numerous, quite short (3 lines), 

 not turgid, and covering the larger part of the disk, the inner a 

 little the largest; mouth somewhat prominent, 6 to 8 lines long. 



Plate 4, fig. 31, the expanded animal, natural size ; a, the same 

 contracted, of nearly a hemispherical form. 



Orange Harbour, Terra del Fuego. Exp. Exp. 



