We report the first record of the scyphomedusa Rhopilema hispidum from the coast of Pakistan. The jellyfish is briefly described and the diagnostic characters are discussed. The morphological features used for the genera identification within the family Rhizostomatidae and various species of the genus Rhopilema are highlighted. We also question the previous record of Rhizostoma pulmo in Pakistan, assuming it to be a Rhopilema jellyfish and possibly the given species.

This report presents the first record of the crowned jellyfish Netrostoma coerulescens from Pakistani waters and establishes its first confirmed record from the Arabian Sea. The jellyfish is briefly described and compared with its congeners. In the region, this is the second record of the genus; the first was Netrostoma setouchianum.

We describe a new species of Crambionella, C. helmbiru, from central Java, Indonesia. The combination of the mean number of lappets per octant (14), presence of foliaceous appendages amongst frills on oral-arms, absence of tubercles on the velar lappets, proportion of terminal club length to oral-arm length (0.28), and the body colour distinguish this species from three previously described congeners. In addition, the analysis of partial sequences of the cytochrome c oxidase subunit I gene indicate substantial genetic differences from both Crambionella orsini and Crambionella stuhlmanni, supporting the validity of this new species. A combination of morphological and genetic approaches determined that the remarkable differences in exumbrellar colours observed in specimens are simply intra-specific variation. Surprisingly, this species has been commercially harvested for more than 20 years and is well-known to the local people in the region, yet it had remained unknown to science until this point. The commercial fisheries targeting this formerly unknown species are also described in detail.

Marivagia stellata, a cepheid jellyfish was previously recorded off Kerala, India in the south-east of the Arabian Sea. Now, the species has been found off the mouth of the River Indus, Pakistan for the first time. This new record greatly extends the range of its distribution to the north-east of the Arabian Sea along the coast of Pakistan.

The present paper reports two scyphozoan species for the coast of Pakistan: the semaeostome Pelagia cf. noctiluca and the rhizostome Catostylus perezi. Both species are described and systematic characters used for identification are discussed for both. We also questioned the previous record of C. mosaicus in Pakistan assuming it to be of C. perezi.

A new record of Crambionella stuhlmanni is reported from the east coast of South Africa. The material is described using quantitative morphological data, and mitochondrial (CO1) and nuclear (ITS-1) sequence data. The species can be diagnosed by a combination of morphological features including the presence of conical projections on velar lappets, the absence of orbicular appendages among mouthlets and the short length of the terminal club on the oral arm. Mitochondrial sequence data unambiguously delineate C. stuhlmanni as a separate species from C. orsini, and phylogenetic analyses support its placement within the monophyletic genus, Crambionella.