New species and new records of hydroids (Cnidaria: Hydrozoa) from Chile Author Galea, Horia R. Author Schories, Dirk Author Försterra, Günter Author Häussermann, Verena text Zootaxa 2014 3852 1 1 50 journal article 36804 10.11646/zootaxa.3852.1.1 2fb83006-f93c-4492-aed0-f5f0707f553e 1175-5326 286956 7DE3BCBA-E5F0-4F0D-B2FD-B5B59E4DAE51

TABLE 3. Comparison of H. erratum sp. nov. with Halecium fraseri Ralph, 1958.

	Present study, as H. erratum sp. nov.	Fraser (1914, 1937, 1944), as H. flexile Allman, 1888
Colony	Generally tall, up to 20 cm high, fan shaped, coplanar	Of moderate height, judging from Fraser’s (1914) Fig. 111A; regularly pinnate
Stem	Polysiphonic, up to. 1.5 mm wide at base, tapering gradually towards tip	Coarse, strongly polysiphonic, unbranched
Internodes	Long, collinear; primary hydrophores surpassing for a short distance the distal node.	Rather short, slightly geniculate; primary hydrophores and their hydrotheca may reach middle part of internodes (Fraser 1937, Pl. 21 Fig. 111C)
Cladia	Well developed, polysiphonic, becoming monosiphonic distally, normally branched (up to 3rd order), giving rise to multi-pinnate structures like the stem (Galea et al. 2009, Fig. 2C)	Short, polysiphonic basally, usually unbranched
Hydrophore	Well developed, with an unmistakable pseudodiaphragm running obliquely from adaxial to abaxial side (Galea et al. 2009, Fig. 2D, F)	Well developed, apparently devoid of pseudodiaphragm
Male gonotheca	Large, tubular in frontal view, laterally flattened, truncate distally (Galea et al. 2009, Fig. 2J), twice the length of the internode (Galea et al. 2009, Table 1)	Broadly club shaped, about 1.5 times the length of internode (Fraser 1937, Pl. 21 Fig. 111D)