332 
BULLETIN OF THE UNITED STATES FISH COMMISSION. 
EUDENDRIUM. 
Characters of the family as given above. 
Key to species of Eudendrium found in the Woods Hole region. 
A. Main stem fascicled. (Larger, species.) 
a. Stem and branches extensively annulated throughout. Hydranth body vasiform E. dispar. 
a'. Branches and pedicels annulated at proximal ends only. 
b. Colony large, pinnately branched. Male gonophores with 2 or 3 chambers E. ramosum. 
b’. Colony smaller, less than 3 inches. Male gonophores 4 or 5 chambered and borne on atrophied 
hydranths E. carneum. 
A'. Main stem not fascicled. (Smaller species.) 
a. Hydranth body globular; pedicels long, slender. Male gonophores 4 or 5 chambered E. tenue. 
a'. Hydranth body vasiform, colony bushy; pedicels strong, shorter. Female gonophores on aborted 
hydranths , E. eapillare. 
a". Hydranth body vasiform: colony minute, about one-fourth inch, sparsely branched; pedicels very 
long, slender and pellucid. Gonophores borne on aborted hydranths E. album. 
Eudendrium ramosum (Linn.). Fig. 7. 
(Tubularia ramosa Linn., Syst. Nat., p. 1302.) 
T r ophosome. — Colony 
bushy, attaining a height of 
6 inches; stem fascicled, the 
main branches giving off 
pinnately disposed branch- 
lets; annulations confined to 
the bases of the internodes 
and ends of the pedicels. 
Hydranth body ovoid. 
Gonosome. — Male gono- 
phores borne on bodies of hy- 
dranths that are not often 
completely aborted, 2 or 3 
chambered ; female gono- 
phores borne usually on hy- 
dranths below the tentacles, 
or on the upper part of the 
pedicels. 
Color. — General color greenish. The hydranth 
bodies lined with vermilion pigment. Male gono- 
phores vermilion; female gonophores orange red. 
Distribution. — Growing abundantly on piles of 
U. S. F. C. wharf at Woods Hole. One of the com- 8. Eudendrium dispar Ag. 
rnonest forms flourishing in shallow water. B. Hydranth, enlarged. 
Eudendrium dispar Ag. Fig. 8. 
(Cpnt.Nat. Hist. U.S.,iv, p.285.) 
Trophosome. — Colony large, attaining a height of 5 inches. Stem slender, slightly fascicled, with 
extensively annulated branches and pedicels. Hydranth body vasiform. 
Gonosome. — Gonophores borne on hydranths, which are not aborted and usually not reduced 
in size. 
Color. — General color greenish. Hydranths rose-colored. Male gonophores orange; female 
gonophores pink. 
Distribution. — Found in rather deep, clear water. Naushon (A. Agassiz). U. S. Fish Commission 
station 7060, off Block Island (Nutting). 
