48 AMERICAN HYDKOIDS. 



? CAMPANULARIA SPECIOSA Clark. 



Plate 8, fig. 5. 



Campanularia speciosa Clark, Alaskan Hydroids, 1876, p. 214. 



Campanularia crenata Allman, New Genera and Species of Hydroids, 1876, p. 258. 



Campanularia speciosa Levinsen, Meduser, Ctenophorer og Hydroider fra Gronlands Vestkyst, 1893, p. 25. 



Campanularia speciosa Nutting, Harriman Alaska Exped., 1901, p. 171. 



Campanularia speciosa Broch, Die Hydroiden der arktisehen Meere, 1909, p. 171. 



Campanularia speciosa Jaderholm, Northern and Arctic Invert., pt. 4, Hydroiden, 1909, p. 188. 



Campanularia speciosa Frasbr, West Coast Hydroids, 1911, p. 33. 



Tro-phosome} — Colony consisting of a creeping rootstock, from which unbranched pedicels 

 arise. Kootstocks not annulated, with thick perisarc. Pedicels of varying length, sometimes 

 as much as twice as long as the hydrotheca, at others considerably shorter than the hydrotheca, 

 usually regularly annulated throughout, the annulations being often obhque and thus giving 

 the spirally twisted appearance mentioned by Levinsen. There is a single considerably smaller 

 annulation just below the hydrotheca. Hydrothecse -urceolate-elongate, about 2 mm. in height and 

 about 2^ times as high as wide. The lower portion is gibbous, the walls gradually narrowing until 

 the least diameter is found about one-fourth the height of the hydrotheca below the margin ; the 

 upper part of the hydrotheca expands gracefully to the margin which is bordered with 8 to 14 

 crenulations which appear evident when viewed from above. The walls are plicated longitudinally 

 for almost their upper third, the ridges of the plications passing downward from the rounded 

 convex portions of the crenulations. The diaphragm is quite inconspicuous and down close 

 to the hydrothecal base, and the opening between the hydrotheca and basal chamber rather 

 broad. 



Gonosome. — The gonangia are relatively small, only about half the height of the hydro- 

 theca, obconic in shape, subtriangular in outUne with the opening occupying the whole of the 

 broad distal end. The whole might be described as bowl-shaped, the bowl having rather straight 

 flaring sides, and standing in its natural position. 



Distribution. — Tjrpe-locahty, Yukon Harbor, Big Koniushi, ShumagLn Islands, 6 to 20 

 fathoms. Reported also from Yakutat Bay, Alaska (Nutting); Greenland (Levinsen); Japan 

 (Allman) ; Arctic Sea (Broch) ; and Spitzbergen (Jaderholm). 120 fathoms is the greatest depth, 

 reported by Broch. 



This species is also doubtfully assigned to the genus Campanularia, the shape of the pro- 

 boscis and contents of the gonangia being unknown. 



CAMPANDLARIA EXIGUA (Sars). 



Plate 8, figs. 6-8. 



Lammdea exigua Saes, Bidrag til Kundskaben om Middelhavets Littoral-Fauna, 1857, p. 159. 



Laomedea exigua Allman, Construction and Limitation of Genera among the Hydroids, Ann. Mag. Nat. Hist., ser. 3, 



vol. 13, 1864, p. 373. 

 Campanularia exigua van Beneden, R^cherches sur la Faune littorale de Belgique, 1867, p. 163. 

 Campanularia exigua Hincks, British Hydroid Zoophytes, 1868, p. 172. 

 Campanularia exigua Calkins, Some Hydroids from Puget Sound, 1876, p. 353. 

 Campanularia exigua Hartlaub, Hydroiden aus dem Stillen Ocean, 1901, p. 353. 

 Campanularia exigua Praser, West Coast Hydroids, 1911, p. 30. 



Trophosome.- — Colony consisting of several stems growing from a creeping rootstock. The 

 stems are flexuose and bear a group of 3 to 5 annulations above the origin of each pedicel. Pedi- 

 cels regularly alternate, varymg considerably in length, usually about twice the length of the 

 hydrotheca but often not longer than the latter. When comparatively long they are annulated at 

 both ends ; but when short they are annulated throughout, their diameter decreasing distaUy . The 



' Description of a specimen collected at the Shumagin Islands, Alaska, by Dr. W. H. Dall. 



^ Description of a specimen mounted on a slide kindly loaned the author by Dr. G. N. Calkins, marked "Puget 

 Sound " 



