First record of the genus (Porifera, Demospongiae, Poecilosclerida, Crambeidae) from Sagami Bay, Japan with description of two new species.

Two new species of are described from Sagami Bay, Japan. has been suggested to have an ancient Tethyan origin according to discovery of their unique pseudoastrose acanthostyles from late Eocene to Oligocene deposits. This is the first record of the genus from the northwest Pacific and first record of the family Crambeidae from Japan.

Global diversification and evolutionary history of onchidiid slugs (Gastropoda, Pulmonata).

Many marine species are specialized to specific parts of a habitat. In a mangrove forest, for instance, species may be restricted to the mud surface, the roots and trunks of mangrove trees, or rotting logs, which can be regarded as distinct microhabitats. Shifts to new microhabitats may be an important driver of sympatric speciation.

Systematic revision of the genus Fleming, 1822 (Gastropoda, Euthyneura, Pulmonata, Onchidiidae).

The genus Fleming, 1822 includes all the onchidiid slugs with dorsal gills. Its taxonomy is revised for the first time based on a large collection of fresh material from the entire Indo-West Pacific, from South Africa to Hawaii. Nine species are supported by mitochondrial (COI and 16S) and nuclear (ITS2 and 28S) sequences as well as comparative anatomy.

A new species and new records of slugs (Gastropoda, Euthyneura, Pulmonata, Onchidiidae) in South-East Asia.

A new species, Dayrat & Goulding, , is described, bringing the total to four known species in the genus Buchannan, 1800. is a rare species with only nine individuals found at three mangrove sites in the Andaman Islands and the Strait of Malacca (western Peninsular Malaysia and eastern Sumatra). The new species is delineated based on mitochondrial (COI and 16S) and nuclear (ITS2 and 28S) DNA sequences as well as comparative anatomy.

First record of Hamacantha (Porifera, Demospongiae, Merliida, Hamacanthidae) from Japan, with description of two new species.

Two new species of thinly encrusting sponge Hamacantha (Demospongiae, Merliida, Hamacanthidae) are described from Japan. Hamacantha (Vomerula) mamoi sp. nov.

A new genus of air-breathing marine slugs from South-East Asia (Gastropoda, Pulmonata, Onchidiidae).

As part of an ongoing effort to revise the taxonomy of air-breathing, marine, onchidiid slugs, a new genus, Dayrat & Goulding, , is described from the mangroves of South-East Asia. It includes two new species, Dayrat & Goulding, , and Dayrat & Goulding, , both distributed from the Malacca Strait to the Philippines and Australia. This study is based on extensive field work in South-East Asia, comparative anatomy, and both mitochondrial (COI and 16S) and nuclear (ITS2 and 28S) DNA sequences.

Integrative taxonomy of a new and highly-diverse genus of onchidiid slugs from the Coral Triangle (Gastropoda, Pulmonata, Onchidiidae).

A new genus of onchidiid slugs, Goulding & Dayrat, , is described, including ten species. Five species were previously described but known only from the type material: (Lesson, 1830), (Semper, 1880), (Plate, 1893), (Stantschinsky, 1907), and (Stantschinsky, 1907), all of which were originally classified in Buchannan, 1800. Many new records are provided for these five species, which greatly expand their known geographic distributions.

A taxonomic revision of the genus (Holothuroidea: Stichopodidae) from Japan.

Complete redescriptions of sea cucumbers in the genus Apostichopus Liao, 1980 are provided using the type specimens and specimens deposited in the National Museum of Nature and Science, Tsukuba, Japan. The genus consists of A. armatus (Selenka, 1867) and A.

Integrative taxonomy of the genus Buchannan, 1800 (Mollusca, Gastropoda, Pulmonata, Onchidiidae).

In an effort to clarify the species diversity of onchidiid slugs, the taxonomy of the genus Buchannan, 1800 is revised using an integrative approach. New, fresh specimens were collected in a large number of places, including type localities. The genus is redefined here as a clade including only three species which are strongly supported by both morphological and molecular data.

Sea cucumbers of the genus Stichopus Brandt, 1835 (Holothuroidea, Stichopodidae) in Straits of Malacca with description of a new species.

Five sea cucumber species including one new species of the genus Stichopus are reported from the shallow coral reefs of Straits of Malacca. The new species Stichopus fusiformiossa has unusual fusiform spicules in the tentacles, which are not found in the other species of the genus. Pseudo-tables and large perforated plates are newly recorded for Stichopus hermanni Semper, 1868 and Stichopus vastus Sluiter, 1887, respectively.