324 t VERKILL, SYNOPSIS OF 



opening at the tips. The column is very short, with 

 a fold below the margin, and separated from it by a 

 "fosse." On the outer edge of the fold the tubercles 

 form a simple row. They are prominent, round, smooth, 

 and nearly equal. 



SUBFAMILY, PHELLIN^E Verrill. 



Capnece Duch. and Mich., Corall. des Antilles (non Capneadce Gosse). 



Column elongated, the basal portion, and often the 

 greater part of the length, covered with a persistent epi- 

 dermal layer, coated with mud or sand, etc. ; the upper 

 portion naked, sometimes papillose. "Acontia" few and 

 thrown out sparingly and reluctantly ; unobserved and 

 perhaps wanting in many species. 



The presence of a persistent and often tough epidermal 

 deposit in this group would seem to be incompatible with 

 the presence of loop-holes (cindidce) and acontia, and 

 such organs have, indeed, been observed only in very few 

 species. But Gosse mentions, as throwing out acontia 

 sparingly from the base, the typical species of Phellia, 

 and another species (_P. Brodricii Gosse) is said to emit 

 them reluctantly from the mouth. 



AMMONACTIS Verrill, these Proceedings, IV, p. 150, 

 1865. 



AMMONACTIS RUBRICOLLTJM Verrill, loc. cit. p. 151. 



Edwardsia rubricollum Stimpson, Proc. Philadelphia Acad. Natural 

 Science, Vol. 7, 1855, p. 376. 



Plate 3, figure 5, 5 a. 



Column much elongated in expansion, covered to near 

 the top with a loose, dirt-colored epidermis ; above this 

 naked, and minutely wrinkled. Just below the tentacles 

 the margin is surrounded by a row of prominent, bead- 

 like, perforated tubercles, which during contraction eject 

 water. Tentacles stout, elongated, tapering to a point, 

 about forty in number, arranged close to the margin, in 



