54 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 4 



Sertularia cornlcina (McCrady) 



Dynamena cornicina McCrady, Gymno. Charleston Han, 1859, p. 



204. 

 Sertularia cornicina Nutting^ Am. Hyd., Part II, 1904, p. 58. 



Distribution. — North of White Friars, 5-10 fathoms. 



Sertularia desmoldes Torrey 



Sertularia desmoides ToRREY^ Hyd. Pac. Coast, 1902, p. 65. 



Nutting, Am. Hyd., Part II, 1904, p. 56. 



Distribution. — Between Charles and Indefatigable islands, 60 fath- 

 oms; off Black Beach, 25-40 fathoms; Tangola-Tangola, low tide; 

 Santa Maria Bay, 10 fathoms. 



Sertularia dispar, new species 

 Plate 13, Fig. 62 



Trophosome. — Colony unbranched, 10 mm. high; stem divided into 

 rather short internodes, on each of which a pair of hydrothecae is nearly 

 medially placed, the pair in contact for a short distance at the base, 

 on the face of the stem, but distinctly separated throughout, on the 

 back of the stem. Hydrothecae stout for their length, tapering distally 

 to a margin with two teeth, placed in such a position that the one flap 

 of the operculum is much larger than the other. 



Gonosome. — Gonangium arising from the face of the stem, in its 

 proximal portion, from the central part of the internode, nearly at 

 right angles to the stem; 1.2 mm. long, 0.8 mm. in diameter; pedicel 

 short and stout. Gonangium strongly corrugated, distally truncated, 

 with a full sized opening. 



Distribution. — Santa Elena Bay, 10 fathoms; San Francisco Bay, 

 2 fathoms; Santa Maria Bay, 10 fathoms; South Bay, Cerros Island, 

 low tide. 



Sertularia exigua Allman 



Sertularia exigua Allman, Hyd. Gulf Stream, 1877, p. 24. 

 Fraser, Jap. Hyd., II, 1936, p. 50. 



Distribution. — Port Culebra, low tide; Tangola-Tangola, low tide; 

 Santa Maria Bay, 10 fathoms; off Thurloe Point, 8-10 fathoms. 



