NO. 4 FRASER : HYDROIDS 11 



Sertularia inflata (Versluys) 



Desmoscyphus inflatus Versluys, Mem. Soc. Zool. France, 1899, p. 42. 

 Sertularia inflata Fraser, Atlantic Hyd., 1944, p. 283. 

 Distribution. — Tortuga Island, 2-5 fathoms. 



Sertularia notabilis, new species 

 Plate 2, Fig. 5 



Trophosome. — Colony small, 5 mm, unbranched. Stem is divided 

 into regular, rather long, internodes by well marked transverse nodes; 

 each internode bears a pair of hydrothecae near its proximal end. The 

 hydrothecae adhere for about half of their length in front, and for the 

 same distance in the back they are definitely apart but parallel; the 

 distal portion is turned sharply outward. There are 3 rather incon- 

 spicuous teeth on the margin. 



Gonosome. — The gonangium is quite notable; it is long, over 2 mm, 

 somewhat curved, nearly cylindrical, but somewhat tumid in the proxi- 

 mal portion ; it is truncate distally, but tapers proximally to form a very 

 short pedicel. It is transversely corrugated throughout, each corruga- 

 tion having a distinct ridge. In some cases, but one gonangium grows 

 from the face of the stem just at the base of the proximal pair of hydro- 

 thecae, but often there is another one at the base of the second pair. 



Distribution. — Station A22-39. Tortuga Island, 2-5 fathoms. 



Remarks. — The hydrothecae of S. notabilis are somewhat similar in 

 shape and similarly placed to those in S. pourtalesi Nutting, but that 

 species is much larger and is branched; the hydrothecae appear near the 

 distal end of the internodes. The gonosome of S. pourtalesi has not been 

 described, so further comparison is out of the question. 



Sertularia stookeyi Nutting 



Sertularia stookeyi Nutting, Amer. Hyd. II, 1904, p. 59. 

 Fraser, Atlantic Hyd., 1944, p. 288. 



Distribution. — Caledonia Bay, on floating sargassum; Cubagua 

 Island, shore. 



These two locations extend the range westward from Maguaripe 

 Bay, Trinidad, in the direction of the various locations in which the 

 species has been collected in the Eastern Pacific. 



Sertularia turbinata (Lamouroux) 

 Dynamena turbinata Lamouroux, Hist. Polyp. Flex., 1816, p. 180. 

 Sertularia turbinata Fraser, Atlantic Hyd., 1944, p. 290. 



Distribution. — Caledonia Bay, on floating sargassum; Tortuga 

 Island, 2-5 fathoms. 



