NO. 5 fraser: hydroids 201 



Family Tubularidae 



Genus EGTOPLEURA 



Ectopleura media, new species 

 Plate 22, Fig. 2 



Trophosome. — The solitary zooid grows to a height of 2 cm, but the 

 pedicel is not particularly stout (0,75 mm in diameter) ; it is entirely free 

 of annulations, but there is a constriction at the terminus. The proximal 

 tentacles are long, about 30 in number; the distal tentacles relatively 

 short, but they are more numerous, nearly 50. 



Gonosome. — The peduncle that supports the medusa buds consists of 

 a short main axis from which short, stout pedicels are given oflf, and these 

 are terminated by medusa buds, which, when well developed, are nearly 

 spherical. 



Distribution. — Station 311-35, ofif Bindloe Island, Galapagos, in 20 

 fathoms. 



Remarks. — This is the first species of Ectopleura that has appeared in 

 the Eastern Pacific. It has much the same general appearance as other 

 species of the genus, but in its special features it is quite different. In the 

 relative length of the basal and oral tentacles, it more nearly resembles 

 E. grandis Fraser, but in that species they are much fewer, with the same 

 number in the two series, 14-16. 



Genus TUBULARIA 

 Tubularia crocea (Agassiz) 

 Parypha crocea Agassiz, Contr. Nat. Hist. U. S., IV, 1862, p. 249. 

 Tubularia crocea Fraser, Hyd. Pacific Coast, 1937, p. 51. 

 Fraser, Hancock Hyd., 1, 1938, p. 26. 



Distribution. — Off Fossil Point, Coos Bay, Ore., 4-6 fathoms; Re- 

 dondo Beach, Calif., shore and on anchor chain ; 3 miles SW of Fraser 

 Point, Santa Cruz Island, 15-19 fathoms. 



Tubularia marina Torrey 

 Tubularia marina ToRREY, Hyd. Pacific Coast, 1902, p. 46. 

 Fraser, Hyd. Pacific Coast, 1937, p. 53. 



Distribution. — Floating docks, Balboa, Calif. ; San Diego, shore. 



