A Detailed Description of the Long-Overlooked Tunicate Ascidia protecta (Ascidiacea), Based on the Type and Non-Type Specimens from the Gulf of California
Teruaki Nishikawa, Hiroshi Namikawa
2021 Volume 26 Number 1 Pages 1-5

Sea Stars of Families Ophidiasteridae and Goniasteridae (Echinodermata: Asteroidea) from the Mesophotic Zone of the Ogasawara Islands, Including Two New Species
Mikihito Arai, Toshihiko Fujita
2021 Volume 26 Number 1 Pages 7-21

Redescription of the Snailfish Careproctus rhodomelas (Cottoidei: Liparidae), with Ontogenetic and Distributional Notes
Kenta Murasaki, Yoshiaki Kai, Hiromitsu Endo, Atsushi Fukui
2021 Volume 26 Number 1 Pages 23-29

First Japanese records of Anguilla luzonensis (Osteichthyes: Anguilliformes: Anguillidae) glass eels from Okinawa-jima Island, Ryukyu Archipelago, Japan
Tomohiro Kita, Kazuki Matsushige, Shunsuke Endo, Noritaka Mochioka, Katsunori Tachihara
2021 Volume 26 Number 1 Pages 31-36

Northernmost Record of Stiphodon multisquamus (Gobiiformes: Oxudercidae) Based on a Specimen from Wakayama, Japan
Taiga Kunishima, Ryosuke Tanaka, Kentarou Hirashima, Ken Maeda
2021 Volume 26 Number 1 Pages 37-41

Northernmost Record of the Surgeonfish Acanthurus nigros (Teleostei: Acanthuridae) from Minamidaitojima Island, Southern Japan
Nozomi Hanahara, Kei Miyamoto, Shin-ichiro Oka
2021 Volume 26 Number 1 Pages 43-47

Two New Species of Free-living Marine Nematodes (Nematoda: Axonolaimidae and Tripyloididae) from the Coast of Antarctica
Daisuke Shimada, Atsushi C. Suzuki, Megumu Tsujimoto, Satoshi Imura, Keiichi Kakui
2021 Volume 26 Number 1 Pages 49-63

A New Species of the Sand-burrowing Dogielinotidae, Haustorioides furotai, from Tokyo Bay, Japan (Crustacea: Amphipoda)

Hiroshi Ogawa, Yoshitake Takada, Kay Sakuma

2021 Volume 26 Number 1 Pages 65-78

Two Species of Paracalliopiidae from the Ryukyu Archipelago in Japan, with the Description of a New Species (Crustacea: Amphipoda)

Hiroyuki Ariyama

2021 Volume 26 Number 1 Pages 79-91

Ameronothrus twitter sp. nov. (Acari, Oribatida) a New Coastal Species of Oribatid Mite from Japan

Tobias Pfingstl, Shimpei F. Hiruta, Takamasa Nemoto, Wataru Hagino, Satoshi Shimano

2021 Volume 26 Number 1 Pages 93-99

Hirsutocrinus duplex, a New Genus and Species of Sea Lilies (Crinoidea, Comatulida, Bathycrinidae) from the Western North Pacific

Alexandr N. Mironov, Toshihiko Fujita

2021 Volume 26 Number 1 Pages 101-110

Three New Species of the Family Eosentomidae (Protura) from the Nasu Imperial Villa, Central Japan

Osami Nakamura

2021 Volume 26 Number 1 Pages 111-125

Correction

Travisia sanrikuensis, a New Species of Travisiidae (Annelida) from the Lower Bathyal Zone of the Northwestern Pacific

Genki Kobayashi, Shigeaki Kojima

2021 Volume 26 Number 2 Pages 131-136

Two Copepods Salmincola edwardsii and Salmincola markewitschi (Lernaeopodidae) Parasitic on Chars (Salvelinus spp.) Reared in a Salmon Museum, Northern Japan

Kazuya Nagasawa

2021 Volume 26 Number 2 Pages 137-143

A New Species of the Genus Eucorydia (Blattodea: Corydiidae) from the Miyako-jima Island in Southwest Japan

Shizuma Yanagisawa, Shimpei F. Hiruta, Yositaka Sakamaki, Satoshi Shimano

2021 Volume 26 Number 2 Pages 145-151

Redescription of the Sea Anemone Capnea japonica (Cnidaria: Anthozoa: Actiniaria)

Kensuke Yanagi, Takato Izumi

2021 Volume 26 Number 2 Pages 153-163

A New Spider of the Genus Yunohamella (Araneae: Theridiidae) from Korea

Sue Yeon Lee, Seung Tae Kim

2021 Volume 26 Number 2 Pages 165-169

Neotypification of Difflugia biwae (Amoebozoa: Tubulinea: Arcellinida) from the Lake Biwa, Japan

Satoshi Ichise, Yositaka Sakamaki, Satoshi D. Shimano

2021 Volume 26 Number 2 Pages 171-186

First Record of the Rare Deepwater Assfish Bassozetus mozambiquensis (Ophidiiformes: Ophidiidae) from the Western South Atlantic

Shinichi Tomiyama, Atsushi Fukui

2021 Volume 26 Number 2 Pages 187-190

A New Species of the Genus Eucorydia (Blattodea: Corydiidae) from Chiang Mai in Northern Thailand

Shizuma Yanagisawa, Yositaka Sakamaki, Sopark Jantarit, Satoshi Shimano

2021 Volume 26 Number 2 Pages 191-195

First Japanese Specimen-based Records of Sardinella gibbosa (Teleostei: Clupeiformes: Clupeidae) from Okinawa Island

Harutaka Hata, Hiroyuki Motomura

2021 Volume 26 Number 2 Pages 197-204

The Original Spelling of the Specific Name of Cybaeus monticolus (Araneae: Cybaeidae) Should be Reinstated

Takafumi Nakano 

2021 Volume 26 Number 2 Pages 205-206

Description of a Small-headed Gnathiid Isopod (Crustacea), Gnathia capitellum sp. nov., from Coastal Japan

Yuzo Ota, Hisanori Kohtsuka, Katsuhiko Tanaka 

2021 Volume 26 Number 2 Pages 207-216

A New Cleaning Method for Accurate Examination of Freshwater Gastropod Shell Specimens Covered with Iron-rich Deposits

Naoto Sawada, Haruhiko Toyohara, Takafumi Nakano 

2021 Volume 26 Number 2 Pages 217-224

A New Species of the Genus Caprella (Crustacea: Amphipoda: Caprellidae) Collected from a Gorgonian at 1497 m Depth off Boso Peninsula, Central Japan

Ichiro Takeuchi, Momoko Shiraishi, Ryosuke Mimori 

2021 Volume 26 Number 2 Pages 225-233

A New Species of the Subfamily Coelotinae (Araneae: Agelenidae) from Shiga and Fukui Prefectures, Japan

Ken-ichi Okumura, Zhe Zhao

2021 Volume 26 Number 2 Pages 235-240

The Largest Cnidae Among the Sea Anemones; Description of a New Haloclavid Species from Japan, Haloclava hercules (Cnidaria: Actiniaria: Enthemonae: Haloclavidae)

Takato Izumi

2021 Volume 26 Number 2 Pages 241-247

A New Species of Pseudanthessius (Copepoda: Cyclopoida: Pseudanthessiidae) on Epinephelus sp. (Actinopterygii: Perciformes: Serranidae) from Chuuk Lagoon, Federated States of Micronesia

Daisuke Uyeno, Enjoy Rain

2021 Volume 26 Number 2 Pages 249-254

Cestode fauna of murid and cricetid rodents in Hokkaido, Japan, with assignment of DNA barcodes

Mizuki Sasaki, Jason Lee Anders, Minoru Nakao

2021 Volume 26 Number 2 Pages 255-272

The First Report of the Feather Mite Pseudalloptinus milvulinus (Acariformes: Pterolichidae) from the Black Kite Milvus migrans in Japan

Tsukasa Waki, Mizuki Sasaki, Hajime Matsubara, Satoshi Shimano

2021 Volume 26 Number 2 Pages 273-279

Revised Diagnosis and First Japanese Records of the Waspfish Ocosia spinosa (Teleostei: Tetrarogidae)

Kentaro Mochizuki, Yoshiaki Kai, Hiromitsu Endo, Hiroyuki Motomura 

2021 Volume 26 Number 2 Pages 281-287

Marine Fish Parasite Argulus caecus (Crustacea: Branchiura: Argulidae) Accidentally Collected from a Fixed Net Caught Squid in Northern Japan

Kazuya Nagasawa, Masato Hirose 

2021 Volume 26 Number 2 Pages 289-296

A Report on Coralliidae (Cnidaria: Octocorallia) Specimens Collected from the Emperor Seamounts with Descriptions of Three New Species

Masanori Nonaka, Takeshi Hayashibara

2021 Volume 26 Number 2 Pages 297-342

First Japanese Record of Muraenichthys gymnopterus (Anguilliformes, Ophichthidae) from Ishigaki-jima Island, Ryukyu Archipelago

Taiga Kunishima, Ken Maeda, Ryutei Inui, Yusuke Hibino

2021 Volume 26 Number 2 Pages 343-349