No.412.] MWORTH-AMERICAN INVERTEBRATES. 309 
Eudendrium ramosum Linn. 
Trophosome : Colony arborescent, much branched, attaining a height of 
from four to six inches. Branches rather symmetrical, pinnate and some- 
what alternate, with similar sub-branches. Hydranths somewhat ovoid, 
with trumpet-shaped hypostome, and with 
fo Ne single verticil of about twenty tentacles, 
el j some of which are often atrophied in male. 
Gonosome: Sexes distinct, though often 
growing in approximate colonies. Gono- 
phores of female somewhat pyriform and 
scattered, springing from body of hydranth 
7% % clusters, each from three to four chambered. 
pete Color of male reddish, of 
female orange. Abundant 
on piles of docks, on racks, 
etc., in shallower waters. 
Eudendrium dispar Ag. 
(Cont. Nat. Hist. U.S., vol. iv.) 
Trophosome : Colony large, 
Fic. 5. 
E height, stems more slender 
(After Allman.) than in former, somewhat 
Fic. 5.— Colon fascicled, extensively and 
Fh Goo Ry dranth with eooo p oret; variously branched and an- 
nulated. Hydranths vasiform, with about twenty-eight tentacles. 
Gonosome: Sexes distinct. Gonophores of female of pinkish orange 
hue, variously clustered about the base of the more or less atrophied 
hydranth and from distal portion of stem. Habitat in deeper waters in 
Vineyard Sound, attached to rocks, shells, etc. 
Eudendrium tenue A. Ag. 
(No. Am. Acalephe, p. 160.) 
Trophosome: Colony very small, rarely exceeding an inch in height, 
branching irregularly, hydranths vasiform, borne on slender pedicels. 
Gonosome: Male gonophores from two to four chambered, of pinkish 
Color, clustered from bases of tentacles. Female gonophores bright orange 
in color, scattered over the branches and stem. Habitat on seaweed, etc., 
in shallower waters. Not abundant. 
