38 AMERICAN HYDROIDS. 



Gonosome. — Gonangia elongate-oval, with a wide truncated distal end and with distinctly 

 but usually irregularly annulated walls, the annulations ordmarily being shallower than in 

 Chjtia joJin^oni, a species which it greatly resembles. The ova are numerous and piled up like 

 balls, forming an elongated central mass. 



American distrihution. — Now England coast (Verrill, Nutting); Pacific coast, Cahfornia, 

 (Ton-ey) ; off Florida coast (Nutting MSS.). 



General distribution. — British Islands (Alder and Hincks), Norway (Bonnevie), North Sea 

 (Broch), Polar Sea (Bergh), Sweden (Segerstedt), Bay of Biscay (Browne), Mediterranean 

 (HeUcr), Morocco (Billard), Azores (Jadcrholm), We^t Africa (Billard), Japan (Stechow). 



BatJiymetric distrihution. — 10 to 444 fathoms. The latter depth is reported by Browne 

 from the Bay of Biscay,' and is the greatest depth reported for any of the Campanularidae. 



The hydrothecse of this species bear a close resemblance to those of C. Tcincaidi Nuttmg. 



CAMPANUIARIA GROENLANDICA Levinsen. 



Plate 3, figs. 1, 2. 



Campanularia grcenlandica Levinsen, Meduser, Ctenophorer og Hydroider fra Gronlands Vestkyst, 1893, p. 63. 



Campanularia lineata Nutting, Hydroids from Alaska and Puget Sound, 1899. 



Campanularia lineata Nutting, Hydroids of the Harriman Alaska Exped., 1901, p. 171. 



Campanularia lineata Haetlaub, Hydroiden aus dem Stillen Ocean, 1901, p. 353. 



Campanularia grcenlandica Jaderholm, Die Hydroiden des Siberischen Eismeeres, 1908, p. 10. 



Campanularia grcenlandica Broch, Hydroidimtersucliungen I, Thecophora Hydroiden von dem nordlicten Norwegen, 



1908, p. 32. 

 Campanularia grcenlandica Broch, Die Hydroiden der arktischen Meere, 1909, p. 187. 

 Campanularia grcenlandica Jaderholm, Northern and Arctic Invert., pt. 4, Hydroiden, 1909, p. 67. 

 Campanularia grcenlandica Eraser, West Coast Hydroids, 1911, p. 31. 



Campanularia grcenlandica Kramp, Report on Hydroids of the Danish Exped. to Northeast Greenland, 1911, p. 390. 

 Campanularia grcenlandica Stechow, Hydroiden den Milnchener Zoologischen Staatssammlung, 1912, p. 356. 

 Campanularia grcenlandica Kkamp, Hydroids collected by the Tjalfe Exped. to the West Coast of Greenland, 1913, 

 p. 29. 



Tro'pJiosome.' — Colony growing from a creeping rootstock which branches profusely and 

 winds around the stem of another hydi'oid, irregularly wavy but not distinctly annulated. 

 The pedicels are rather long for this group, sometimes attainmg a length of over 4 mm. They 

 are closely and regularly annulated throughout then' upper and median portions, and more 

 sparsely annulated or even smooth on then- basal parts. Usually, however, there are a few 

 distinct annulations immediately above the pedicel origin, and sometimes the pedicels are 

 closely annulated throughout. The hydrothecse are large and marked by very strong longi- 

 tudinal fines whicfi originate between the hydrothecal teeth and pass straight downward 

 foUowing the surface of the hydrothecal waU to its bottom. The teeth are remarkably strong 

 and clear cut, evenly rounded and usuaUy 12 in number. The diaphragm is very near the 

 bottom of the hydrotheca and consists of the annular sheK-fike thickening of the hydrothecal 

 waUs so near the true bottom that it might easily escape notice. 



Gonosome. — The gonangia are borne on the rootstock and are usuaUy flask-shaped with 

 a tubular neck and round narrow orifice. A typical one is about 2 mm. in height and about 

 two and a half times as long as wide. The walls are often indistinctly corrugated, but are 

 generally smooth. The gonangia contain fixed sporosacs. 



Distrihution. — The type-locafity for this species is Davis Straits, 46 m. Other localities, 

 Puget Sound (Nutting); Glacier Bay, iilaska (Nutting). 



General distrihution. — Coast of Norway (Broch), Siberian Sea (Jaderholm), Arctic Sea 

 (Broch), West Greenland (Levinsen), White Sea (Schydlowsky), Japan (Stechow). 



' Joum. of Marine Biological Assn., vol. 8, No. 1, Sept. 1907, p. 24. 



- Description of a specimen collected by the Albatross in Bering Sea at station 4777, Semisopoclinoi Island, r. t. S. 

 44° W., 1. t. S. 4° W. about 12 miles (lat. 52° 11' N. ; long. 179° 49' B.). 



