Pictonorchestia, a new genus of riparian-hopper from New Zealand (Crustacea, Amphipoda, Senticaudata, Talitridae).

Pictonorchestia, a new genus of talitrid amphipod is established for Orchestia dentata Filhol, 1885, from New Zealand. It is characterised by the dactylus of gnathopod 2 which has a well-developed projection on the posterior margin which interlocks with a shallow sinus on the palm and a proximal spine which defines the palm. It differs from other talitrid genera in having gnathopod 1 carpus and propodus with palmate lobes, gnathopod 2 dactylus not modified distally, pleopods all well-developed, uropod 1 exopod with marginal setae in one row.

Carpentaria gen. nov., a new talitrid genus from tropical Australia (Amphipoda, Senticaudata, Talitroidea, Protorchestiidae).

The new talitrid genus Carpentaria gen. nov. is described from tropical Australia.

Talitrid amphipods from India, East Africa and the Red Sea (Amphipoda, Senticaudata, Talitroidea, Talitridae).

Two new coastal talitrid genera are described, Austropacifica gen. nov., known from tropical Australia, Papua New Guinea and the south-western Pacific Ocean and Gazia gen.

Coastal Talitridae (Amphipoda: Talitroidea) from north-western Australia to Darwin with a revision of the genus Cochinorchestia Lowry & Peart, 2010.

Three species of coastal talitrids are reported from north-western Western Australia: Australorchestia tantabiddyensis sp. nov., from Tantabiddy Rockholes Cave, Cape Range National Park; Talorchestia dampieri sp.

The tropical talitrid genus Floresorchestia (Crustacea, Amphipoda, Talitridae).

Floresorchestia floresiana (Weber, 1892) from Flores, F. anomala (Chevreux, 1901) from the Seychelles, F. malayensis (Tattersall, 1922) from Singapore and F.