146 J. E. Dusrpren—Jamaican Actiniaria : 
glandular streak, and its German equivalents, Driisenstreif or Nesseldriisenstreif, 
I would restrict to the tissue at the apical region of the middle lobe; ciliated 
streak, or Flimmerstreifen, to the deeply-staining, strongly-ciliated region of the 
lateral lobes ; intermediate streak, to the region on each side, partly developed on 
both the middle and lateral lobes, and separating the two zones already indicated ; 
reticular streak, to the tissue along the basal region of the filament, the term most 
nearly expressing its character in microscopic sections. 
When the ciliated streak disappears proximally, and the filament becomes 
what is known as simple, a trilobed outline in transverse section is nevertheless 
often preserved. Here the lateral enlargements, however, bear no relation 
except that of position, with the true trilobed filament. They are of the same 
significance as those to be described in connexion with Corynactis myrcia (Pl. xv., 
fig. 3), that is, each is simply a swelling of the ordinary mesenterial endoderm, there 
being little histological modification and no special supporting mesogleeal axis. 
Histologically the whole of the terminal lobe in the simple filament appears to 
correspond with the apical tissue of the middle lobe in the trifoliate filament, that 
is, with the glandular streak as here restricted. Nematocysts generally become 
more numerous proximally, and the filaments are branched along with the free 
edge of the mesentery. 
A peculiarity connected with the glandular streak in the present species is 
that the actual apex in some cases becomes deeply grooved, resembling that 
figured by the Hertwigs (1879, pl. v., fig. 14) for one of the lower mesenteries of 
Sagartia parasitica, and recalling the condition in the so-called ‘‘ ectodermal 
filaments” of the Alcyonaria. 
Ripe ova were present on mesenteries of the higher orders, in one specimen 
sectionized. M°Murrich found all the mesenteries, even the directives, to be 
gonophoric. His Bahaman specimens were also hermaphrodite, but none of the 
Jamaican examples show such a combination of gonads, nor was this the case with 
the two species described by Kwietniewski (1898). 
The species is found in considerable numbers, associated with Asteractis, in 
the crevices of coral rock, or on stones embedded in the coral sand, in the shallow 
waters on the south east-shore of Drunkenman Cay, outside Kingston Harbour. 
They are seen with only the dise exposed, the overhanging portion of the 
column resting on the surface of the sand, while the base may be buried toa 
considerable depth. 
The mottled, greyish colours of the younger forms harmonize with their sur- 
roundings, but the brighter colours of the adults offer a great contrast. I 
is among the abundance of specimens occurring at Drunkenman Cay, that the 
forms with smooth tentacles are to be procured. Large examples of the species 
