THE CAMPANULAEID^ AND THE BONNEVIELLID-ffi. 45 



bears a hydrotheca on a shoulder-like process near its distal end. The hydrothecse are very 

 large, thick-walled and almost sessile, about 1.5 mm. in height. Their shape approaches the 

 obconoid, but there is some curve to the lateral profile. In some cases, however, they are 

 almost tubular. They are ordinarily about two-thirds as wide as deep, with margins smooth 

 and encircled by what appears to be a narrow impressed band. The hydrothecse are slightly 

 unsymmetrical, basally bending slightly toward the proximal end of the branch, the interior of the 

 curved portion constituting the basal chamber. The diaphi-agm is evident, but the passage 

 from the hydrothecal to the basal chamber is rather broad. There is often, but not usually, a 

 single very short annulation between the basal chamber and the shoulder of the stem internode' 

 which bears the hydrotheca. The hydranth has numerous tentacles, 24 or more, and a hypo- 

 stome which appears to be of the usual trumpet-shaped character of this family; but which is so 

 strongly retracted in preserved specimens as to be a mere disk resting upon the body above the 

 tentacle bases. 



Gonosome.^ — "I found two types of gonothec^, the one was cylindrical and divided into 

 about five lobes by regular and broad furrows, the other form was ovoid with a constricted 

 opening and a single male gonophore." 



Distribution. — The type-locality is Loggerhead Key, off the Florida Coast, 9 fathoms. 

 Other localities, mostly West Indian, are as follows: 10 miles north of Zoblos Island (Clarke); 

 Sand Key (Fewkes); off Bermudas (AUman); near the Tortugas, 11 meters (Versluys); 

 Anguilla, Antilles, 100-150 fathoms (Jaderholm); Bermudas (Ritchie, Congdon); off Florida 

 Coast (Nutting). Albatross station 2334, lat. 23° 10' 42" N.; long. 82° 18' 24" W., 67 fathoms; 

 Albatross station 2406, lat. 28° 46' N.; long. 84° 49' W., 26 fathoms; Albatross station 2408, 

 lat. 28° 28' N.; long. 84° 25' W., 21 fathoms; Albatross station 2413, lat. 26° N.; long. 82° 57' 

 30" W., 24 fathoms; Albatross station 2415, lat. 30° 44' N.; long. 79° 26' W., 440 fathoms; 

 Albatross station 2767, lat. 43° 03' N.; long. 58° 56' W., 52 fathoms. 



Bathymetric distribution. — Shallow water to 440 fathoms. 



This species has given rise to considerable controversy. Billard ^ contends that it is the 

 same as 0. juncea of Allman; Ritchie, 1909, considers the two species distinct and Billard 

 (Hydroides du British Museum, 1910, p. 8) concedes the point after further consideration. The 

 present writer after the comparison of the two species feels confident that these later writers 

 were correct in their conclusions. 



CAMPANULARIA FLEXUOSA (Hincks). 



Plate 7, figs. 1-6. 



Laomedea gelatinosa var. a Johnston, Brit. Hydroid Zooph., 1847, p. 104. 



LaoTnedea gelatinosa var. a Ghay, List Brit. Anim., vol. 1, London, 1848, p. 85. 



Laomedea fiexuosa Alder, Ann. Mag. Nat. Hist., ser. 2, vol. 18, 1856, p. 440. 



Laomedea flexuosa Alder (Hincks MSS.) Cat. Zooph. Northumb. and Durham, 1857, p. 32. 



Laovnedea fiexuoaa Allman, Ann. Mag. Nat. Hist., ser. 3, voL 4, 1857, p. 137. 



Laomedea flexuosa Hincks, Ann. Mag. Nat. Hist., ser. 3, vol. 8, 1861, p. 260. 



Laomedea flexuosa Kirchenpauer, Abh. Gebiete Naturwiss. Verein, Hamburg, vol. 4, pt. 3, 1862, p. 17. 



Laomedea flexuosa Norman, Report 31st meeting Brit. Ass. Adv. Sci., 1862, p. 152. 



Laomedea flexuosa Allman, Report on the present state of our knowledge of the reproductive system in the Hydroids, 



1864, p. 364. 

 Laomedea flexuosa Allman, Ann. Mag. Nat. Hist., ser. 3, voLlS, 1864, p. 273. 

 Campanularia flexuosa Hincks, British Hydroid Zoophytes, 1868, p. 168. 

 Campanularia flexuosa Verrill, Proc. Amer. Ass. Adv. Sci., 1873, p. 364. 

 Campanularia flexuosa Verrill, Invertebrate Animals of Vineyard Sound, 1873, p. 726. 

 Campanularia flexuosa Verrill, Amer. Jour, Sci., voL 7, 1873, pp. 44, 133. 

 Campanularia flexuosa Schulze, Nordsee-Exped. Coelenteraten, 1874, p. 129. 

 Campanularia flexuosa McIntosh, Ann. Mag. Nat. Hist., ser. 4, vol. 13, 1874, p. 208. 

 Campanularia flexuosa Verrill, Check- list Marine Invert., 1879, p. 17. 



Campanularia flexuosa Winther, Fortegnelse over de i Danmark Hydroide Zoophyter, 1880, p. 238. 

 Campanularia flexuosa de Varenne, Sur la Reproduction des Polypes Hydraires, 1882, pp. 11-57. 



' Description taken from Congdon, Hydroids of Bermuda, 1907, p. 469. 



'' Sur les Haleciidae, Campanulariidse et Sertulariidse de la Collection du Challenger, 1908, p. 1356. 

 55968°— 15 4 



