Cylichnoides sp. 1

Chaban, E. M., 2016, Opisthobranch molluscs of « Cylichna occulta group » (Gastropoda: Opisthobranchia: Cylichnidae) from the Chukchi Sea and adjacent waters, The Bulletin of the Russian Far East Malacological Society 20, pp. 5-26 : 21

publication ID

https://doi.org/ 10.5281/zenodo.11087801

DOI

https://doi.org/10.5281/zenodo.11620776

persistent identifier

https://treatment.plazi.org/id/C85AF226-FF9F-FFE3-BF5A-FDE4FE2D1DC4

treatment provided by

Felipe

scientific name

Cylichnoides sp. 1
status

 

Cylichnoides sp. 1 .

Figs 4M View Fig ; 5J–O View Fig

Material studied. Chukchi Sea : Wrangel Isl., icebreaker «Fyodor Litke», 01.IX.1929, station 44 – 1 specimen, collected by P. V. Ushakov .

D e s c r i p t i o n. This shell has an almost straight columellar margin ( Fig. 4M View Fig ), very fine spiral sculpture, pale yellow periostracum and unusual rachidians. Spiral sculpture ( Fig. 5O View Fig ) consists of the weak straight striae equally close over the whole shell, mostly at regular distances from each other. These striae alternate with two more weak striae, which can be seen more clearly at the electron microscopy images. The height of the shell is 7.8 mm. Radula ( Fig. 5J–N View Fig ) has formula 10x2:1:1:1:2, lateral teeth with 20–24 regularly spaced curved denticles, which descend to the base of the tooth. Rachidian teeth equipped with the long curved denticles tapering with 1–4 filiform ends. Cutting edge is a simple rounded form. Lateral edges not rolled.

N o t e s. The species differs from other species of Cylichnoides in shell sculpture and rachidian teeth morphology. Rachidian tooth is equipped with long curved denticles tapering with 1–4 thread ends.

V

Royal British Columbia Museum - Herbarium

GBIF Dataset (for parent article) Darwin Core Archive (for parent article) View in SIBiLS Plain XML RDF