244 BULLETIN OF THE 



Halecium tenelliun Hincks. 



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 longitheea Allman. 



Plate II. 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 hydrothecse differ from Professor Allman's description and figure, bnt 

 agi-ee with his type-specimen in tapering towards the base. See Plate II., 

 Figs. 7 to 10. 



Some of the hydrothecse are extended to twice their original length by the 

 addition of a number of annular processes ; in some cases as many as twenty 

 being foimd 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 occui'ring 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 betAveen these remark- 

 able bodies and the stems of Cryptolaria i\pon which they were growing. 



The fact of these two slightly different forms of these peculiar colonies hav- 

 ing been found upon these tM'o 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. 



Plato III. Fies. 14 - 20. 



A few ppecimens 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 

 fipecimens 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 cocnosarc so well preserved that it greatly assisted me in making out the con- 



