the Actiniarian Family Aliciide. 7 
to regard the two as distinct. It is not likely that the 
two distinguished zoophytologists would have neglected the 
elongated capitulum had it been present in their form. 
Bunodeopsis antilliensis, sp. n. (Pl. I. figs. 1-4.) 
Form (Pl. I. figs. 1, 2).—Base adherent, rarely free, irre- 
gular in outline, generally oval-shaped, thin-walled, and 
transparent, so that the mesenteries and internal organs can 
be seen through, margin crenate, surface thrown into ridges 
and grooves corresponding with the attachment of the perfect 
and imperfect mesenteries. 
Proximal part of column covered with pedunculate irregu- 
larly arranged outgrowths or vesicles of various sizes com- 
municating with the ccelenteron ; most are large, compound, 
and shortly clavate, having a narrow peduncle; others are 
spheroidal or papillate; the larger may bear digitiform out- 
growths, others are merely tuberculate, and others again have 
only thickened ridges. ‘These may almost disappear when the 
vesicles are fully inflated, the surface being then nearly 
smooth, the ridges and tubercles showing as slightly thickened 
more opaque bands. ‘T’he tubercles and bands on microscopic 
examination are seen to be batteries of large nematocysts. 
Column-wall expanded and short proximally, not readily seen 
owing to the presence of the abundant vesicles; upper part 
or capitulum only visible when the animal is extended, long, 
cylindrical, and smooth, much less in diameter than the 
vesicular area, but enlarging towards the disk; walls ex- 
tremely thin throughout, pellucid, the darker coloured 
cesophagus clearly seen through. 
Tentacles completely and readily retractile, elongate, 
smooth, entacmzous, subulate, thin-walled, transparent, 
variable in number, arranged in several cycles according to 
the formula 6, 6, 12, 24. Examples with 12, 18, 24, 30, 36, 
48, and higher numbers are met with; outer arise directly 
from the margin of the disk ; capable of great extension ; over- 
hang the column-wall; covered with minute urticating spots. 
In full extension they are very delicate structures, readily 
detaching when handled. Disk larger in diameter than the 
capitulum, very thin-walled, the attachment of the mesenteries 
showing through ; peristome generally elevated into a cone 
with the oral aperture at the apex ; mouth oval-shaped, six 
well-marked ridges and grooves on each side; no gonidial 
groove. ‘The disk, tentacles, and naked portion of the column- 
wall are usually completely infolded, so that no external 
indication of them is left. 
