BULLETIN OF THE 
Halecium tenellum ۰ 
This well-known species is represented in the collection by a small specimen 
from Lat. 24° 34! N., Long. 83? 16' W. Depth, 36 fathoms. 
Cryptolaria longitheca ALLMAN. 
Plate XI. Figs. 7-10. 
Very good representatives of this species were collected in Lat. 25° 33! N., 
and Long. 84° 21 W., at a depth of 101 fathoms. 
The hydrothece differ from Professor Allman's description and figure, but 
agree with his type-specimen in tapering towards the base. See Plate II., 
Figs. 7 to 10. 
Some of the hydrothecos are extended to twice their original length by the 
addition of a number of annular processes ; in some cases as many as twenty 
being found upon one hydrotheca. 
Clustered upon the upper portions of the stem of one of the finest specimens 
were a number of peculiar bodies, very like in character to the similar bodies 
described by Professor Allman as occurring on the stems of C. conferta. They 
are polygonal in form, largest at the distal end, tapering to the base, crowded 
so closely together that the walls of adjoining bodies are in contact through- 
out their length, and are provided with a small tubular orifice arising from 
the centre of the distal end; at the base they are connected by branching 
stolons, but I was unable to make out any connection between these remark- 
able bodies and the stems of Cryptolaria upon which they were growing. 
The fact of these two slightly different forms of these peculiar colonies hav- 
ing been found upon these two closely allied forms of Cryptolaria is an argu- 
ment in favor of the suggestion of Professor Allman, that these bodies are the 
gonangia of the species of Cryptolaria to which they are attached, and that 
there may exist some communication between them as yet undiscovered, I 
worked with great care on sections, transverse, longitudinal, and oblique, of 
cleaned and stained specimens, but was unable to detect any connection between 
them. 
There is the same method of lateral communication between the stems in 
this species as is described in C. conferta. 
Cryptolaria conferta ALLMAN. 
Plate III. Figs. 14 - 20. 
A few specimens of this interesting form were obtained in Lat. 25° 33! N. 
and Long. 84° 21, W., at a depth of 101 fathoms. In general outline the 
Specimens from the above-named locality agreed so closely with the figure 
given by Professor Allman from the type specimen, that I had but little doubt 
in regard to their identity ; but with the original description they do not agree 
in structure. After careful study of many specimens, some of which contained 
the coenosarc so well preserved that it greatly assisted me in making out the con- 
