72 VERRILL, SYNOPSIS OF 



way to the centre and others much less. The marginal 

 tentacles can scarcely be distinguished from the other 

 tubercles in the alcoholic specimen, but in life are "longer, 

 flattened, with broad, white, imperforate tips." Mouth 

 large, with thickened lips, which have many small folds, 

 with two rounded tubercles at one angle. Height, in 

 alcohol, .5 of an inch; diameter .1 of an inch. 



Sides of column, in life, greenish gray, streaked with 

 pinkish brown towards the base. Disk greenish gray, 

 with the margin of the mouth white. Marginal tentacles 

 with white tips. 



Hong Kong, attached in crevices of the rocks in the 

 fourth region of the littoral zone, March, 1855. Dr. Wm. 

 Stimpsou. 



STEPHANACTIS Verrill, gen. nov. 



Column subcylindrical, somewhat elongated, not verru- 

 cose, substance firm and dense. Disk exceeding the 

 column, covered with regular radiating lines of short, 

 unequal tubercles. The outer tubercles or tentacles are 

 largest and divided into several ( three to five ) short 

 rounded lobes ; those next within are two or three lobed ; 

 the innermost are simple, rounded or papilliform verrucae. 

 The disk and tentacle-like organs do not appear to be 

 capable of contraction, being fully expanded in alcohol. 



This genus resembles in general appearance Actinopo- 

 rus Duch. and Mich., but does not have the tentacular 

 organs subdivided as in that genus, nor the Avails perfora- 

 ted by vertical rows of pores (suckers?). The tentacle- 

 like tubercles resemble, in form and arrangement, those 

 of Aureliania Gosse, but are more numerous, and the 

 latter is said to be highly contractile in all parts, and ap- 

 pears to differ in other characters from the present form. 

 It may, however, eventually prove to be the same genus. 



STEPHANACTIS INDICA Verrill, sp. nov. 



In alcohol the base is narrower than column, the latter 

 is largest in the middle, decreasing towards the summit, 



