Syllinae (Syllidae: Polychaeta) from Australia. Part 4. The genus Haplosyllis Langerhans, 1879 Author Lattig, Patricia Centre d’Estudis Avançats de Blanes (CEAB-CSIC), Carrer d’accés a la Cala Sant Francesc 14, 17300 Blanes (Girona), Catalunya, Spain. E-mail: plattig @ gmail. com; dani @ ceab. csic. es & Departamento de Biología (Zoología), Laboratorio de Biología Marina e Invertebrados, Facultad de Ciencias, Universidad Autónoma de Madrid, calle Darwin 2, 28049 Canto Blanco, Madrid, Spain. E-mail: guillermo. santmartin @ uam. es plattig@gmail.com Author Martin, Daniel Centre d’Estudis Avançats de Blanes (CEAB-CSIC), Carrer d’accés a la Cala Sant Francesc 14, 17300 Blanes (Girona), Catalunya, Spain. E-mail: plattig @ gmail. com; dani @ ceab. csic. es plattig@gmail.com Author Martín, Guillermo San Departamento de Biología (Zoología), Laboratorio de Biología Marina e Invertebrados, Facultad de Ciencias, Universidad Autónoma de Madrid, calle Darwin 2, 28049 Canto Blanco, Madrid, Spain. E-mail: guillermo. santmartin @ uam. es text Zootaxa 2010 2010-07-29 2552 1 1 36 https://biotaxa.org/Zootaxa/article/view/zootaxa.2552.1.1 journal article 10.11646/zootaxa.2552.1.1 1175-5326 5303431 Genus Haplosyllis Langerhans, 1879 Haplosyllis Langerhans, 1879: 527 Trypanosyllis ( Trypanoseta ) Imajima & Hartman, 1964: 129 . Geminosyllis Imajima, 1966: 233 .— Kudenov & Harris, 1995: 71 , fig. 1.26.— Lattig et al . 2007: 561–562 . Type species. Syllis spongicola Grube, 1855 Diagnosis . Body cylindrical. Prostomium with four eyes. Three antennae. Palps robust, fused at bases. Two pairs of tentacular cirri. Antennae, tentacular cirri and dorsal cirri distinctly moniliform, the latter sometimes with a single small article on posterior parapodia (giving a smooth appearance). Ventral cirri digitiform. Pharynx with one anterior tooth surrounded by crown of 10–12 soft papillae and ring of cilia, occasionally a trepan of small teeth. Chaetae all simple, with bi- or unidentate tips, 1–12 per parapodia. Capillary chaetae absent. Reproduction by sexual stolons (schizogamic scissiparity).