NO. 1 fraser: hydroids 15 



Genus GEMMARIA 



Gemmaria costata (Gegenbaur) 



Zanclea costata Gegenbaur, Zeit. fiir Wissen. Zool,, Bd. VIII, 1856, 

 p. 229. 



Gemmaria costata Mayer, The Hydromedusae, I, 1910, p. 49. 



Distribution. — On coral at low tide, Braithwaite Bay. 



Gemmaria gemmosa McCrady 

 Gemmaria gemmosa McCrady, Gymno. Charleston Har., 1859, p. 49. 



Distribution. — On sponge from reef north of Tagus Cove; on gas- 

 tropod shell, Gardner Bay, 25-35 fathoms; Port Utria, 15-20 fathoms. 



Anna B. Hastings has reported a species, Zanclea protecta, (Ann. 

 and Mag. Nat. Hist., (5), X, 1930, pp. 552-560), from James Bay, 

 James Island, from Gorgona Island, and from Taboga Island, but it 

 has not been observed in this collection. 



Genus SYNCORYNE 



Syncoryne flexibilis, new species 

 Plate 2, Fig. 8 



Trophosome. — Zooids growing singly from a creeping stolon ; long 

 and slender, reaching a height of 20 mm. but varying much in height; 

 perisarc thin, hence the pedicel is not rigid; no annulations. Hydranths 

 large, with 50 or more tentacles, more crowded than usual. 



Gonosome. — Medusa-buds thickly clustered above the proximal ten- 

 tacles. 



Distribution. — Gorgona Island, 20 fathoms; Port Utria, on coral 

 at low tide, in 20 fathoms and in 40 fathoms; Jicaron Island, 15 fath- 

 oms; Secas Islands, 15 fathoms; east of islands off Navidad Head, 25-35 

 fathoms. 



Syncoryne mirabilis (L. Agassiz) 



Coryne mirabilis L. Agassiz, Cont. Nat. Hist. U.S., IV, 1862, p. 185. 

 Syncoryne mirabilis Fraser, Hyd. of Vancouver Island, 1914, p. 114. 



Distribution. — Wenman Island; north shore of Tagus Cove; Black 

 Beach; all at low tide. 



