A New Genus and Five New Species of Kalyptorhynchia (Platyhelminthes: Rhabdocoela) Discovered in Northern Japan
Naoya Takeda, Hiroshi Kajihara
2018 Volume 23 Number 1 Pages 1-11

Histology-free Descriptions for Seven Species of Interstitial Ribbon Worms in the Genus Ototyphlonemertes (Nemertea: Monostilifera) from Vietnam
Hiroshi Kajihara, Kotaro Tamura, Shinri Tomioka
2018 Volume 23 Number 1 Pages 13-37

A New Species, Lamispina ammophila sp. nov. (Annelida: Flabelligeridae), from Shimoda, Japan
Naoto Jimi, Hiroshi Kajihara
2018 Volume 23 Number 1 Pages 39-42

A New Quadrannulate Species of Orobdella (Hirudinida: Arhynchobdellida: Orobdellidae) from Kii Peninsula, Japan
Takafumi Nakano
2018 Volume 23 Number 1 Pages 43-49

A New Species of Brevitalitrus (Crustacea: Amphipoda: Talitridae) from Malaysia
Ko Tomikawa, Takafumi Nakano, B. H. Ross Othman, Hiroshi Morino
2018 Volume 23 Number 1 Pages 51-59

Tsuranarthrura shinsei, a New Genus and Species in Anarthruridae (Crustacea: Tanaidacea) from the Northwestern Pacific
Keiichi Kakui, Shinri Tomioka
2018 Volume 23 Number 1 Pages 61-68

Japanese Species of the Genus Lasconotus (Coleoptera: Zopheridae: Colydiinae), with Description of a New Species from Ishigaki-jima Island, the Ryukyu Islands
Jun-ichi Aoki
2018 Volume 23 Number 1 Pages 69-74

Identification of Larvae and Recognition of New Synonymy for Two Chinese Onycholyda Sawflies (Insecta: Hymenoptera: Pamphiliidae) based on Molecular Data
Akihiko Shinohara, Takuya Kiyoshi, Meicai Wei, Yuichi Kameda
2018 Volume 23 Number 1 Pages 75-81

Reinstatement of the Lancelet Name Asymmetron lucayanum, Recently Proposed as a Junior Synonym of Branchiostoma pelagicum (Cephalochordata)
Teruaki Nishikawa
2018 Volume 23 Number 1 Pages 83-85

Revised Diagnosis and First Northern Hemisphere Records of the Rare Clingfish Lepadichthys akiko (Gobiesocidae: Diademichthyinae)
Kyoji Fujiwara, Hiroyuki Motomura
2018 Volume 23 Number 1 Pages 87-93

Redescription and Geographic Variations of Pterois antennata and First Record of Pterois paucispinula from French Polynesia (Scorpaenidae: Pteroinae)
Mizuki Matsunuma, Hiroyuki Motomura
2018 Volume 23 Number 1 Pages 95-114

First Specimen-based Record of Ammolabrus dicrus (Perciformes: Labridae) from Japanese Waters, with Notes on Morphological Ontogenetic Changes and Geographic Variation
Yoshino Fukui, Takeshi Uchida, Hiroyuki Motomura
2018 Volume 23 Number 1 Pages 115-120

First Record of the Grenadier Coelorinchus sheni (Actinopterygii: Gadiformes: Macrouridae) from Japan
Naohide Nakayama, Hiroko Takaoka, Kei Miyamoto
2018 Volume 23 Number 1 Pages 121-127

Errata
2018 Volume 23 Number 1 Pages 129

Re-description of Metedwardsia akkeshi (Cnidaria: Anthozoa: Actiniaria: Edwardsiidae), Discovered in Akkeshi, Hokkaido, Almost 80 Years after Original Description, with a Revision of the Diagnosis of Genus Metedwardsia
Takato Izumi, Kensuke Yanagi, Toshihiko Fujita
2018 Volume 23 Number 2 Pages 135-142

Eleven New Species of Dicyemids (Phylum Dicyemida) from Octopus longispadiceus and O. tenuicirrus (Mollusca: Cephalopoda: Octopoda) in Japanese Waters
Hidetaka Furuya
2018 Volume 23 Number 2 Pages 143-179

Tangenarchopsis, a New Replacement Name for the Preoccupied Tangiopsis (Trematoda: Digenea: Hemiuroidea: Derogenidae)
Misako Urabe, Takafumi Nakano
2018 Volume 23 Number 2 Pages 181-182

Marine Macrodasyida (Gastrotricha) from Hokkaido, Northern Japan
Shohei Yamauchi, Hiroshi Kajihara
2018 Volume 23 Number 2 Pages 183-192

Echinoderes antalyaensis sp. nov. (Cyclorhagida: Kinorhyncha) from Antalya, Turkey, Levantine Sea, Eastern Mediterranean Sea
Hiroshi Yamasaki, Furkan Durucan
2018 Volume 23 Number 2 Pages 193-207

A New Species of Tanarctus (Heterotardigrada: Arthrotardigrada: Tanarctidae) from Oku-Matsushima, Japan
Shinta Fujimoto
2018 Volume 23 Number 2 Pages 209-213

First Record of Hemichela nanhaiensis (Pycnogonida: Ammotheidae) from Japanese Waters, with the First Description of Females
Yushi Hosoda, Shinri Tomioka, Keiichi Kakui
2018 Volume 23 Number 2 Pages 215-218

A New Species of Apterichtus (Actinopterygii: Anguilliformes: Ophichthidae) from Tori-shima Island, Southern Japan with Notes on Characters of Supraorbital Canal
Yusuke Hibino
2018 Volume 23 Number 2 Pages 219-223

First Japanese Record of the Speckled Grouper Epinephelus magniscuttis (Perciformes: Serranidae) from the Osumi Islands
Jumpei Nakamura, Mayumi Takayama, Jessica Worthington Wilmer, Jeffrey W. Johnson, Hiroyuki Motomura
2018 Volume 23 Number 2 Pages 225-228

First Confirmed Japanese Record of Suttonia lineata (Perciformes: Serranidae) from Iwo Island, Volcano Islands
Tomohiro Yoshida, Kaoru Kuriiwa, Hiroyuki Motomura
2018 Volume 23 Number 2 Pages 229-232

First Japanese Records of the Jawfish Opistognathus solorensis (Actinopterygii: Perciformes: Opistognathidae) from the Osumi Islands
Satokuni Tashiro, Daisuke Uyeno, Hiroyuki Motomura
2018 Volume 23 Number 2 Pages 233-237

Distributional Range Extension of Xeniamia atrithorax (Perciformes: Apogonidae) in the northern South China Sea
Tomohiro Yoshida, Keita Koeda, Hiroyuki Motomura
2018 Volume 23 Number 2 Pages 239-241

First Records of Two Deepwater Cardinalfishes (Perciformes: Epigonidae), Epigonus lifouensis and E. pectinifer, from Indonesia, Eastern Indian Ocean
Makoto Okamoto
2018 Volume 23 Number 2 Pages 243-248

First Japanese Record of the Black Margined-scale Sergeant Abudefduf nigrimargo (Perciformes: Pomacentridae) from the Tokara Islands
Takuya Uejo, Kunto Wibowo, Hiroyuki Motomura
2018 Volume 23 Number 2 Pages 249-251

Revision of Species in Sicyopterus (Gobiidae: Sicydiinae) Described by de Beaufort (1912), with a First Record of Sicyopterus longifilis from Japan
Ken Maeda, Toshifumi Saeki
2018 Volume 23 Number 2 Pages 253-262