No. I.] ACTINIARIA OF THE BAHAMAS. 19 
overhanging ledges, or in depressions or cavities in the coral 
rock; it is also one of the forms figured by Uhthoff as occurring 
at Green Turtle Cay. It seems tolerably certain that the form 
described by Duchassaing and Michellotti from St. Thomas as 
Condylactts passifiora is identical with the Bahaman form under 
consideration. The description given by those authors, how- 
ever, is far from perfect, and presents certain differences from 
what I find in the Bahama specimens, which are, however, I 
think, capable of explanation. A discussion of this point will, 
however, be deferred until a description of the specimens stud- 
ied has been given. I would merely point out here that Andres’ 
generic term Cereactis must be replaced by Condylactis, which 
has the priority. 
The column is usually bright scarlet in color, becoming some- 
what brownish above; the disc is pale brown, and the tentacles 
are of the same shade, usually tipped with crimson, and assuming 
when contracted a somewhat greenish hue. In some cases the 
crimson tips are wanting. The color of the column varies 
somewhat ; occasionally it is somewhat darker, more brownish, 
' than in the specimen figured; in other cases the coloring matter 
is arranged in closely approximated minute dots, and in others, 
again, it is uniformly distributed, but much paler, varying to 
orange, or even yellow. 
The base is firmly adherent and somewhat larger than the 
column. The limbus is crenated. The column varies considerably 
in the amount of extension, the same individual measuring, when 
fully extended, about 11 cm. in length and 3.75 cm. in diameter ; 
while when in the condition which may be termed expansion it 
measures only 7 cm. in height by 6.3 cm. in breadth. In the 
preserved specimens the height is about 4 cm. and the diameter 
5.5 cm. In adults the column is apparently smooth, but in 
smaller individuals it is furnished in its upper part with small, 
irregularly scattered verrucz, which, however, do not seem to 
be as adhesive as they are in C. aurantiaca, according to Andres. 
The sphincter muscle is only very slightly developed, and is of 
the diffuse type (PI. III., Fig. 4), and, consequently, the infold- 
ing of the tentacles during contraction is by no means perfect. 
The mesogloea of the column wall is comparatively thick, meas- 
uring about 0.17 mm. The endoderm is richly supplied with 
“yellow cells.” 
