Sululana buta new genus, new species is described from deep water in the Sulu Sea, Philippines. The new genus shows weak affinities to Metacirolana Kussakin, 1979, and no clear affinities to other cirolanid genera. The genus is defined by the unicuspid mandible incisor; maxilla with two simple lobes with endopod less than half size of exopod; all pereopods with haptorial pereopods (i.e., dactylus longer than propodus); pereopod dactylus lacking secondary unguis; pleopod 1 exopod opercular and indurate; and all endopods less than half size of exopods. Sululana buta new genus, new species is known only from the type locality in the Sulu Sea, at a depth of 1,016 m.

A new genus and new species of semiterrestrial potamid crab, Dacuomon quynhi, is described from Phu Yên Province in central Vietnam. In its prominently setose third maxillipeds and first ambulatory leg, the new genus is similar to species of Pilosamon Ng, 1996, from Laos and northern Thailand but can be distinguished by the structures of the male thoracic sternum, male pleon and gonopods. Two new species of Indochinamon Yeo & Ng, 2007, I. lanae and I. signum, are described from Quang Ninh Province in northern Vietnam, and can be distinguished from congeners by features of the carapace, male pleon and gonopods.

Malihkaia aligera, new genus, new species, is described from the Mali Hka River in the northernmost Kachin State, Myanmar. It is distinguished by strongly furrowed lips and a type of sexual dimorphism new in Nemacheilidae: the pectoral fin of males is greatly elongated as a ‘wing’, rigid and curled, with the first branched ray the longest, and with all branches and sub-branches adjacent and without membranes between them. Schistura nubigena, new species, is described from the same locality. It is distinguished by its colour pattern that evolves from 4 broad bars in juveniles about 20 mm SL, to a pattern of 8 bars that become coalescent along the flank and along the back, leaving a row of pale spots between them. Schistura wanlainensis, new species, is described from the Mon Lan Chaung, a tributary of the Mali Hka. It is distinguished by its unique colour pattern of a pale grey to whitish background with 18–32 narrow, regularly shaped black bars, extending from dorsal midline and reaching downwards to below level of pectoral fins, continuous over back with contralaterals, wider than interspaces anteriorly, narrower than interspaces on caudal peduncle; some of anterior bars fused at their dorsal extremity.

A new genus Swennenia is proposed for Gascoignella jabae, a small, atypical sacoglossan slug that was described based on a single specimen and provisionally placed in the Platyhedylidae. This species has no rhinophores or oral tentacles, and is unique in having a pair of prominent cerata on its posterior end. Dissections showed the arrangement of the internal organs to be more similar to that of the Limapontiidae. Notes on its live colouration, morphology, anatomy, ecology, and biology are provided