58 VERRILL, SYNOPSIS OF 



SAGARTIA sp. 



An extremely simple species. Color pale brown, in- 

 clining to olive around the margin of the disk. 



Port Lloyd, Bonin Islands, under stones in the lower 

 part of the littoral zone, October, 1854. Dr. William 

 Stimpson. 



SAGARTIA (?) NAPENSIS Verrill. 



Actinia napensis Stimpson^ 1. c., p. 376, 1855. 



Plate 2, figures 4, 4a. 



Base wider than column, which is smooth, elongated 

 and subcylindrical in full expansion ; in contraction form- 

 ing an elevated cone, broadly rounded at top. Disk 

 broad, about equal to diameter of column. Tentacles 

 not very numerous and rather large, pointed, arranged in 

 two rows near the margin. Mouth protruded, with the 

 lips strongly lobed ; margin of disk crenulated. Height 

 of column 1.5 inches. Color of column fawn-colored be- 

 low, greenish above. Disk around mouth mottled with 

 yellowish and spotted with white. Mouth within streaked 

 with yellowish. Tentacles dark green with rhomboidal 

 white spots on the inner surface. 



Napa-Kiang, Loo Choo Islands, attached to pebbles 

 beneath the sand, and expanding its tentacles at the sur- 

 face, in the second region of the littoral zone. Common, 

 November, 1854. Dr. Wm. Stimpson. 



CANCRISOCIA Stimpson, 1. c., p. 376, 1855. 



Base dilated, secreting a firm, thin, horn-like or chit- 

 inous membrane, which covers the carapax of Dorippe, 

 and is held in place by the posterior legs of the crab. 

 Column elevated in expansion, contracting into a very 

 thin disk. Tentacles numerous, long and slender, crowcted 

 near the margin. Cinclidse not observed. 



This genus is closely allied to Adamsia and Cereus. 

 From the latter it differs in the presence of a basal secre- 

 tion and the more marginal position of the nearly equal 



