On a collection of shallow-water hydroids (Cnidaria: Hydrozoa) from Guadeloupe and Les Saintes, French Lesser Antilles Author Galea, Horia R. text Zootaxa 2008 1878 1 54 journal article 10.5281/zenodo.184149 086e0d63-8af0-4ad1-8884-03fa56b5ea98 1175-5326 184149 Silhouetta uvacarpa Millard & Bouillon, 1973 (fig. 2D) Silhouetta uvacarpa Millard & Bouillon, 1973 : 25 , fig. 3A–D, pls 2–3.— Calder, 1988b : 17 , figs 13–14.— Schuchert, 2007 : 239 , fig. 17. Silhouetta puertoricensis Wedler & Larson, 1986 : 91 , fig. 9Aa–b. Material examined . Stn. 7 : 25.03.2008 —four small stems, each with 1–2 hydranths, one bearing clusters of gonophores, on concretions. Type locality . Silhouette Island , Seychelles . Remarks . The present material is too scarce to allow a new description of this species. Silhouetta uvacarpa is easily recognizable due to the following characters: the tentacles are filiform and arranged in two or more closely-set whorls below the hypostome; the gonophores (medusa buds) arise from both the stem and branches, in clusters borne on quite long pedicels. For descriptions of S. uvacarpa , see Millard & Bouillon (1973) and Calder (1988b) . Schuchert (2007) summarized the actual data available on this species. Additional life cycle studies are necessary in order to describe the mature medusa. FIGURE 2 . A and B: Bougainvillia sp.—fragment of colony (A); nematocysts (B). C: Millardiana longitentaculata Wedler & Larson, 1986 —gastro- and gonozooids. D: Silhouetta uvacarpa Millard & Bouillon, 1973 —colony with hydranths and gonophores. E to H: Rhizogeton sterreri (Calder, 1988b) —hydranth (E); hydranth and male gonophore (F); male gonophore (G); nematocysts (H). I and J: Turritopsis cf. nutricula McCrady, 1857 —polyp (I); nematocysts (J). K and L: Eudendrium capillare Alder, 1856 —stem (K); undischarged (left) and discharged (right) microbasic eurytele (L). M to O: Myrionema amboinense Pictet, 1893 —hydranths with female (M) and male (N) gonophores; nematocysts (O). P: Cladocoryne floccosa Rotch, 1871 —hydranth (some frontal tentacles removed). R to U: Coryne pusilla Gaertner, 1774 —hydranth (R); male (S) and female (T) gonophores; nematocysts (U). Scale bars: 10 µm (B, H, J, L, O, U); 50 µm (K); 100 µm (S, T); 200 µm (G, I); 300 µm (C); 500 µm (P, R); 1 mm (A, D, E, F, M, N). Distribution . Seychelles ( Millard & Bouillon 1973 ), western Atlantic ( Calder 1988b ), western Pacific (Kirkendale & Calder 2003 ).