NO. 1 FRASER: HYDROIDS 47 



Scandia mutabilis (Ritchie) 



Campanularia mutabilis Ritchie^ Hyd. from Cape de Verde Is., 1907, 



p. 504. 



Scandia mutabilis Fraser^ Beaufort Hyd., 1912, p. 372. 



Distribution. — North of Wenman Island, low tide; Tagus Cove, 

 30 fathoms; Black Beach, low tide; San Francisco Bay, 2 fathoms; 

 Santa Maria Bay, 10 fathoms. 



Family Lafoeidae 



Genus FILELLUM 

 Filellum serpens (Hassall) 



Campanularia serpens Hassall^ Trans. Micr. Soc, 1852, p. 163. 

 Filellum serpens Fraser, Hyd. of Vancouver Island, 1914, p. 172. 



Distribution. — Post Office Bay, 12-15 fathoms; James Bay, 20 

 fathoms, and 50-70 fathoms; Gardner Bay, 25-35 fathoms; Santa Elena 

 Bay, 10-12 fathoms; Jicaron Island, 25-30 fathoms; Pacora Island, 

 15-25 fathoms; Secas Islands, 15 and 25 fathoms; Tangola-Tangola, 

 15-25 fathoms; White Friars Islands, 25 fathoms; east of islands off 

 Navidad Head, 25-35 fathoms; Thurloe Point, 30 fathoms. 



Genus LAFOEA 



Lafoea intermedia, new species 

 Plate 11, Fig. 53 



Trophosome. — Stem and portions of the principal branches fascicled ; 

 branches not numerous, irregularly arranged, making an angle of 

 nearly 90° with the stem. Hydrotheca tubular, tapering to the base, 

 but little curved ; pedicels with one or two slight twists, coming out 

 from the stem at an angle that is usually nearly 90°, but may be con- 

 siderably less, near the tip of the branch. 



Gonosome. — Coppinia mass elongate, elliptical, with the separate 

 gonangia but rarely hexagonal ; they are much more often nearly circu- 

 lar in cross section, not regularly arranged. Each gonangium with a 

 distinct collar, much less in diameter than the main portion of the 

 gonangium. The hydrothecal tubes are not numerous but they vary 

 much in size and length. 



