152 NATURAL HISTORY OP 



secondly named species, 8. nivea, forms the variety (b) 

 immaculata of Andres. It is olive-drab in colour, with 

 snowy-white tentacles and opaque white disc. When 

 distended fully the disc appears grey towards the 

 tentacles, which themselves become pellucid. The 

 third species, S. rosea, exhibits the following varie- 

 ties : (c) Viiiosa : Deep brown, with pale orange disc 

 and rose-red tentacles, (d) Pulcherrima : Cream- 

 white, with crimson-lake tentacles. (e) Erythrops : 

 Dark brown, with orange-red disc and rose-lilac ten- 

 tacles, (f) Demetana : Small, red-brown, with crimson 

 disc and tentacles. The tentacles in all these varieties 

 number about 200, arranged in four or five rows. 

 The first row has generally two dusky bars at the base. 

 The upper part of the column contains a number of 

 suckers. 



I have kept many specimens of this species in cap- 

 tivity for lengthened periods. The variety immaculata 

 will emit the acontia very freely. The cnidse are 

 mostly chambered, and project densely-barbed ec- 

 thorea. 



4. H. ORNATA, Holdsworth. 



Actinia ornata {Holds.), Sagartia ornata (P. H. G.). 



Hab. : Dartmouth. Height | in., diam. -|- in. 



Colour, (a) Fusca : Dark orange-brown, with disc 

 pale orange to purplish-brown. Tentacles dark brown, 

 encircled by three white rings, (b) Ruhida : The 

 brown on the tentacles replaced by red. 



There is a white bar across the base of the tentacles, 

 and a white heart-shaped spot in the outer region of 

 the radii. 



Described by Mr. Holdsworth (Zool. Society Proc, 

 Dec. 11, 1855). 



