8 University of California Publications. | ZooLocy 
EUDENDRIIDAE. 
Gen. Eudendrium, Ehrenberg, 1834. 
3. Eudendrium rameum (Pallas). 
Tubularia ramea, Pallas, 1766, p. 83. 
Eudendrium rameum, Johnston, 1847, p. 45, pl. 5, figs. 1, 2. 
Eudendrium rameum, Torrey, 1902, p. 33. 
Trophosome. ‘‘Hydrocaulus profusely branched, attaining a height 
of from three to six inches, fascicled in the main stem and principal 
branches; main stem attaining a thickness of more than a quarter of an 
inch, and as well as the principal branches, very irregularly ramified; 
branches alternately losing their fasciculation and then consisting of single 
capillary tubes, which may continue to branch before the emission of the 
ultimates or hydranth-bearing ramuli, which are regularly alternate in their 
disposition; perisare rigid, occasionally marked with nearly obsolete annu- 
lations on the smaller branches. Hydranths with about twenty tentacles, 
frequently atrophied in the male after the production of gonophores.’’ 
Gonosome. Male sporosaes two-chambered, borne upon the body of 
the hydranth in a verticil immediately below the tentacles; female sporo- 
sacs oval, scattered on the hydrocaulus for some distance below the 
hydranth.’’ (Allman, ’71.) 
Distribution. Mouth of San Diego Bay, between tides (June 
26, 1903: no gonosome); San Pedro, Cal., on float at surface 
(Dee., 1901; no gonosome). Mediterranean, Norway, Gt. Britain 
(Allman). Jan Mayen (Markt.) Helgoland (Hartlaub). Green- 
land (Levinsen). Northern Asia (Thompson). 
4. Eudendrium .ramosum (Linn.). 
Tubularia ramosa, Linnaeus, 1767, p. 1302. 
Eudendrium ramosum, Ehrenberg, 1834, p. 296. 
Eudendrium ramosum, Torrey, 1902, p. 34. 
Trophosome. Hydrocaulus much branched, fascicled at the base 
and attaining a height of four inches or more; primary ramifications irreg- 
ular, after which the branches become regularly alternate and mostly dis- 
tichous in their arrangement, giving off all along their length, from their 
upper or distal sides, short, usually simple ramuli, which support the 
hydranths on their summits; perisare firm, annulated at the origin of the 
branches, or even along the entire length of the smaller branches. 
Hydranths usually with about twenty tentacles. 
Gonosome. Male sporosacs two-chambered, borne on body of hydranth 
below tentacles which often atrophy. Female sporosacs piriform, scattered 
on body of hydranth and stalk immediately below it. 
Distribution. Mouth of San Diego Bay, in 3 fathoms; Pacifie 
Grove, Cal. Gt. Britain (Allman). Jan Mayen, Adria, Rovigno 
(Markt.). Helgoland (Hartlaub). Greenland (Bétencourt). 
