Filellum serratum ( Clarke, 1879 )

Watson, Jeanette E., 2012, Some hydroids (Hydrozoa: Hydroidolina) from Dampier, Western Australia: annotated list with description of two new species., Memoirs of Museum Victoria 69, pp. 355-363 : 356

Filellum serratum ( Clarke, 1879)

Figure 1B

Lafoëa serrata Clarke, 1879: 242 .

Reticularia serrata . – Ralph, 1958: 312.

Filellum serratum . – Millard, 1975: 178.– Gravier–Bonnet, 1979: 22.– Hirohito, 1995: 110.– Watson, 2000: 5, fig. 2C.

Material examined. WAM Z31858, microslide, malinol mount. One s mall infertile colony creeping on stem of Eudendrium racemosum .

Description. Hydrothecae long, tubiform, base adnate to substrate, distal two thirds of body erect, diameter narrower on adnate section, abcauline surface closely transversely striated above adnate adcauline wall. Margin circular, rim slightly everted, some with some marginal replications.

Figures

Figure 1A–G. A. Eudendrium racemosum from photograph of whole colony. B. Filellum serratum, regenerated hydrotheca. C, D. Lafoeina amirantensis. C, small hydrotheca and nematotheca on hydrorhiza. D, large hydrotheca. E–G. Halecium?tenellum. E, unbranched stem. F, basally annulated hydrophore. G, hydrotheca with strongly everted rim and desmocytes. Scale bar, mm: A, 20. B, C, E, F, G, 0.2. D. 0.1.