Taxonomy of Ciliophora. 1. Shellositon gen. n. from littoral amphipods in the Sea of Japan (Peritricha: Rovinjellidae)
A.W. Jankowski
Abstract. A growing number of colonial genera with shell are described in the literature within both epistylid and operculariid groups of Sessilida. An annotated list is presented, and a new genus Shellositon is added to shelled forms outside the classical taxon Loricata. Unlike all known genera of shelled non-loricate sessilids, Shellositon includes only solitary zooids with a large folded shell and small myoneme merged into the thickened shell basis. Its single species S. branchialis lives on Pacific amphipods.
Zoosystematica Rossica, 1993, 2(2): 211–216 ▪ Published in print 31 December 1993

References
Gajewskaja, N.S. 1933. Zur Ökologie, Morphologie und Systematik der Infusorien des Baikalsees. Zoologica (Stuttgart), 83(1/3): 1-298.
Jankowski, A.W. 1967. Allometric stalk development in peritrich ciliates. Dokl. Akad. Nauk SSSR, 176(3): 725-727. (In Russian).
Jankowski, A.W. 1985. Life cycles and taxonomy of generic groups Scyphidia, Heteropolaria, Zoothamnium and Cothurnia (class Peritricha). Trudy zool. Inst. Akad. Nauk SSSR, 129: 74-100. (In Russian).
Jankowski, A.W. 1994. Taxonomy of Ciliophora. 2. New species of Opercularia, Entziella, Circolagenophrys from the Black Sea and Pacific, and taxonomic notes on other peritrichs (Peritricha). Zoosyst. Rossica, 2(2), 1993: 217-222.
Matthes, D. 1972. Rovinjella sphaeromae nov. gen., nov. sp. (Rovinjellidae nov. fam.), ein mariner Symphoriont. Zool. Anz., 189(3/4): 266-272.
Matthes, D. & Guhl, W. 1974. Kindella pacifica und die Peritrichengattungen Kindella, Allomeron, Discotheca und Nidula. Arch. Protistenk., 116(1/2): 103-105.
Najdenova, N.N. 1978. Two new species of epibiont infusoria in the Black Sea Crustacea. Biol. Morya, 45: 44-49. (In Russian).
Najdenova, N.N. 1985. New genus and new species of Peritrichidea (Sessilida) on Crustacea of the Black Sea. Ekol. Morya, 20: 58-65. (In Russian).
Precht, H. 1935. Epizoen der Kieler Bucht. Nova Acta Leop. Carol., 3: 405-474.
Schodel, H. 1983. Drei neue Peritriche von Gammariden. Arch. Protistenk.,127(1): 115-126. https://doi.org/10.1016/S0003-9365(83)80010-4