﻿138 LEIDY ON THE MARINE INVERTEBRATE FAUNA OF 



They are attached by a narrow pedicle, are oval in form, and white in color, with 

 four longitudinal bands of purplish red. They have four short, conical tentaculse 

 and measure about half a line in length by one-third of a line in breadth. 



In one instance, I found a small bunch of Eucoryne elegans, in which the polypes 

 had only two circles of tentaculse : the long cylindrical ones and a circle of the short 

 ones. 



Since writing the foregoing, Mr. Ashmead has given to me several dried specimens 

 of Eucoryne elegans, from Great Egg Harbor. The bunches are not so profuse as 

 those of Point Judith, but one of them has a branch six inches in length. 



6. Laomedea gelatinosa, Lamouroux. Small polypidoms attached to Mytilus 

 edulis, Laminaria saccharina, the rocks, &c. Point Judith. 



7. Laomedea dichotoma, Lamouroux. (PI. XI. fig. 36.) Polypidom very much 

 branched ; branches alternate, annulated at their commencement, the larger ones 

 brown, the smaller ones light-yellow ; branchlets annulated throughout, or at their 

 commencement and termination, from one to three times the length of the polype 

 cells ; the latter campanulate, with an even margin. Ovarian cells axillary, pedicled, 

 two or three times the length of the polype cells, urn-shaped, with the pedicles an- 

 nulated. Found abundantly, growing in profuse bunches, three inches in length, 

 attached to a submerged wreck on Absecom Beach. Specimens obtained by Mr. 

 Ashmead. 



The nettling cells of the tentaculae of Laomedea are numerous, and are arranged in 

 circles. They are elliptical in form, often curved, and minute; measuring from -0067 

 mm. to '0089 mm. long by # 0022 mm. broad; and they contain a central style ex- 

 tending from one pole of the cell half through its length. These cells, of which two 

 are represented in figure 8, plate X, I saw at no time emitting threads. 



8. Campanularia volubilis, Lamarck. Point Judith. 



9. Campanularia dumosa, Flemming. Point Judith. I found small specimens of 

 what I suspect to be this and the preceding species, but had not the opportunity of 

 carefully examining their characters. 



10. Sertularia. Polypidoms, with opposite, tubular cells, the mouth divergent, 

 growing to about three-fourths of an inch in length, are very abundant at Point 

 Judith, attached to the roots of Eucus vesiculosus and E. nodosus, to the surface of 

 the rocks beneath these fuci, and to mytili, but I did not ascertain the species to 

 which they belong. 



11. Sertularia cuPRESSiNAjfLin. Found abundantly, thrown up on Absecom 

 Beach. Some of the bunches measure six inches in length. 



