NO. 5 FRASER : HYDROIDS 225 



Halecium regulare Fiaser 

 Plate 25, Fig. 11 



Halecium reffuiare Yraser, Hancock Hyd., 1, 1938, p. 43. 

 Fraser, ibid., 3, 1938, p. 133. 



Trophosome. — Quite often a pedicillate hydrophore grows out of the 

 sessile hydrophore and much more rarely this may be duplicated. 



Gonosome. — (Not previously described.) The male gonangium usu- 

 ally grows out from the pedicel of the secondary hydrophore or less com- 

 monly directly from the stem, immediately below the sessile hydrophore. 

 It is elongated, obovate, smooth, with scarcely any pedicel. The female 

 gonangium has not yet been observed. 



Distribution. — North of Isla Partida, Gulf of California, 10 fathoms. 



Halecium telescopicum Allman 



Halecium telescopicum Allman, Challenger Hyd., H, 1888, p. 10. 



Eraser, Hyd. Pacific Coast, 1937, p. 110. 

 Distribution. — 10^4 miles west of Point Dume, Calif., 47-48 fathoms. 



Halecium tenellum Hincks 



Halecium tenellum HiNCKS, Ann. and Mag. Nat. Hist., (3), VHI, 



1861, p. 252. 



Eraser, Hyd. Pacific Coast, 1937, p. 110. 



Eraser, Hancock Hyd., 1, 1938, p. 44. 



Eraser, ibid., 2, 1938, p. 110. 



Eraser, ibid., 3, 1938, p. 133. 

 Distribution. — Off San Pedro Nolasco Island, Gulf of California, 

 55-57 fathoms. 



Halecium tenue Eraser 



Halecium tenue Eraser, Hancock Hyd., 3, 1938, p. 139. 



Distribution. — North of Isla Partida, Gulf of California, 10 fathoms. 



Halecium vagans Eraser 

 Halecium vagans Eraser, Hancock Hyd., 1, 1938, p. 44. 



Distribution. — 2^ miles east of South Point, Santa Rosa Island, 

 23-28 fathoms. 



