The Actiniae of the Plate Collection. 247 



in size and a re-examination of the "Albatross" specimens denion- 

 strated the existence of capitnlar ridges which I had previoiisly 

 overlooked. I feel dubious however, as to the Identification of the 

 "Albatross" forms with Ädinia lineolafa of Couthouy. In neither 

 the small "Albatioss" specimens nor in the larger one here described 

 was there the flattening of the column to the extent described and 

 figured by Dana (1846), nor does it seem likely that it could occur 

 on accoimt of the thickness of the mesogloea. And, furthermore, 

 there is no indication of the dark purple-brown coloration of the 

 disc which Dana's figures show. In the meantime, however, it seems 

 just as well to retain for the form here described the specific name 

 first applied to it, leaving open for the present the question of its 

 identity with Couthouy's species. 



Genus Actinostola Verrill, 1883. 



Pamcfidae usually of large size, with a tirm leathery wall, which 

 may be corrugated or folded but is not furnished with Verrucae; 

 margin not lobed, tentaculate; tentacles short, and stout, fluted and 

 not enlarged at the base ; the individual mesenteries of each pair in 

 certain cycles unequally developed. 



10. Actinostola chilensis n, sp, 



No. 220. Calbuco. 16 — 20 fathoms. 1 specimen. 



The base in somewhat concave and is adherent. The column 

 is practically cylindrical (Fig. 30), diminishing slightly in diametei' 

 from the base to immediately below the margin where it undergoes 

 a sudden but slight enlargement. It measured about 3.7 cm in 

 height, but, the limbus beiiig somewhat irregulär, measurements 

 taken along different lines varied somewhat, the extremes being 

 4.7 cm and 3.0 cm. Its diameter just above the limbus was nearly 

 5 cm, while at the margin it feil to 3.8 cm. The surface has a 

 rugose appearance due to slight longitudinal and transverse furrows, 

 probably produced by contraction; the consistency of the column 

 wall is firm and leathery and there are no Verrucae or tubercles. 



The tentacles are completely exposed and are arranged in about 

 four cycles, the innermost one consisting of twenty-four tentacles. 

 Tliis would make a total of one hundred and ninety-two provided 

 that all the cycles were fuUy developed, a condition which, however, 

 does not seem to be fulfllled, since an enumeration of the outer cycle 



Zool. Jahrb., Supplement. Bd. VI. (Fauna Chilensis. Bd. III.) Heft 2. 17 



