THE CAMPANULAEIDjE AND THE BONNEVIELLIDiE. 95 



Genus BONNEVIELLA Broeh. 



BonneviellaBnocn, Hydroiduntersuchungen, II, Zur Kenntniss derGattungen Bonneviella imd Lictorella, 1909, p. 197. 

 Bonneviella Broch, Die Hydroiden der arktischen Meere, 1909, p. 230. 



Trophosome. — Hydrantla with a single row of tentacles connected by a veloid. Food cavity lined with ectoderm. 

 The branched colony arising from a rhizocaulon. 



Gonosome. — (Gonangia scattered over the stem or in groups on rootstock.') Gonophores sessile. Colonies sex- 

 ually distinct. 



BONira;VIELLA GRANDIS (Allman). 



Plate 26, fig. 1. 



Campanularia grandis Allman, Diagnosis of New Genera and Species of Hydroida, 1876, p. 259. 

 Lafoea gigantea Bonnevie, The Norwegian North Atlantic Exped., Hydroida, 1899, p. 68. 

 Lafoea gigantea Beoch, Bergens Museimis Aarbog, 1905, p. 15. 

 Bonneviella grandis Broch, Hydroidimtersuchungen, II, 1909, p. 198. 

 Bonneviella grandis Broch, Die Hydroiden der arktischen Meere, 1909, p. 230. 

 Campanularia grandis J ADBRB.OLM, Northern and Arctic Invert., pt. 4, Hydroiden, 1909, p. 70. 



Tro-phosome? — Stem compound, consisting of 4 to 6 straight, thick-walled, parallel, smooth- 

 surfaced tubes which seem to be closely adherent throughout and from which the pedicels 

 arise in an entirely irregular manner. The stem remiads one of a magnified stem of Campanu- 

 laria vertidllata. The specimen at hand is iucomplete and broken, but the portion remaining 

 is about 3 inches long. Pedicels short, as compared with the hydrothecse, being 3 mm. in 

 length in the specimen described, and with a single subgiobidar anmdation just below the hy- 

 drotheca. Otherwise the pedicel is practically smooth. Hydrotheca; very large, a tjrpical 

 one being 5 mm. long, and a little more than twice as long as broad, urceolate in shape, with a 

 distinctly flaring margin which is smooth and slightly sinuous. The greatest diameter of the 

 hydrotheca is below its middle and below this it rounds into an approximately hemispherical 

 basal portion. The hydranth is so retracted that its characteristic features can not be ascer- 

 tained. 



Gonosome.^ — Gonangia springing in a dense cluster from the aggregated basal tubes, nearly 

 sessile, lageniform, with strong longitudinal ridges, slightly exceeding a quarter of an inch in 

 height. 



Distrihution. — Type-locality, Cape. St. John, Japan. Otherwise the distribution is ex- 

 ceedingly uncertain, owing to various writers confounding it with B. regia Nutting. North 

 Atlantic Exped., station 164, 800 meters. West of Lofoten, Norway (Bonneyie). Lat. 64° 17' 

 5" N.; long. 14° 44' 75" W., between Iceland and Greenland (Broch). 



According to AUman's description and figures the gonosome is in the form of clusters of 

 spindle-shaped gonangia, while Bonnevie figures it as scattered. 



BONNEVIELLA REGIA (Nutting). 



Plate 26, figs. 2^. 



Campanularia regia Nutting, Hydroids of the Harriman Alaska Exped., 1901, p. 172. 

 Bonneviella grandis (part) Broch, Die Hydroiden der arktischen Meere, 1909, p. 230. 

 Campanularia grandis (part) Jaderholm, Northern and Arctic Invert., pt. 4, Hydroiden, 1909, p. 70. 



Trophosome.^ — Colony consisting of a densely aggregated mass of rootstocks growing 

 over an ascidian stem and a colony of Lafoea fruticosa. Pedicels unbranched, usually shorter 

 than the hydrothecse, but occasionally much longer. There is often a distinct swellmg a short 

 distance below the hydrotheca, otherwise the pedicel is quite smooth. Hydrothecse very large, 

 often attaining a length of 3.5 mm. and about 3.5 times as long as broad. They are tubular 



' Added by the present writer. 



2 Description of a specimen labeled " Campanularia grandis Allman, Tsugar. Str." I believe the specimen is 

 one sent me in exchange by Dr. Elof Jaderholm. 



3 Description taken from the original by Allman. 



* Description of specimens from station 4778, Bering Sea, lat. 52° 12' N.; long. 179° 52' E., 43 fathoms. 



