1063-0740/03/2903- $25.00 © 2003
Russian Journal of Marine Biology, Vol. 29, No. 3, 2003, pp. 175–179.
Original Russian Text Copyright © 2003 by Biologiya Morya, Levin.
Until recently, only three species of
been described from the northern Paciﬁc, namely
ered as a species widely distributed in the meridional
direction and inhabiting an area from the Bering Sea to
southern Kyushu Island (Japan). However, in recent
years doubt has been cast on an opinion about the dis-
tribution of this species to the north of the south Kuril
Islands and descriptions of new species of this genus
have been published from this area:
. However, accord-
ing to our materials, the biodiversity of Far-Eastern
members of the genus
is greater, even tak-
ing into account the recent descriptions. The target of
this paper is to provide a description of a new species of
inhabiting the eastern Sea of
The permanent preparations of spicules were pre-
pared using a common technique, washing the pieces of
surface tissues of the holothurians with Javel water. The
preparations were then examined with an Axiostar
microscope (Carl Zeiss). The preparations were photo-
graphed with a digital camera AxioCam and uploaded
into a computer using Axio Vision software. The cir-
cumpharyngeal ring was examined with a Stemi 2000-
C dissection microscope, and the images were captured
and digitized with the same AxioCam camera. The
measurements of spicules were performed with an ocu-
The type material is deposited at the Paciﬁc Institute
of Bioorganic Chemistry FEB RAS, Vladivostok.
Order Dendrochirota Grube, 1840
F. Lambert described this species in his paper on holothurians of
western North America  as a subspecies of
C. frondosa japonica
Family Cucumariidae Ludwig, 1894
Levin et Stepanov sp. nov.
The holotype is 185 mm long (the refer-
ence number is PIBOC-WC-01); it was collected on
August 8, 2001, from aboard the RV “MRS-268,” at
E (Sea of Okhotsk), from 28 m
deep; coll. V.G. Stepanov; with a dredge designed bythe
“Nevod” engineering ofﬁce; from ground of pebble
with sand. Paratypes 1 and 2 (reference numbers
PIBOC-WC-02 and PIBOC-WC-03), specimens 170
and 120 mm long respectively, were collected at the
same point as the holotype.
This is a large holothurian, the body is
up to 190 mm. The body is in the form of a cucumber,
elongated, the posterior part of the body is expanded,
with an acute extremity.
Podia are arranged along the trivium into three
bands, a transverse row in the bands usually consists of
three (rarely of up to ﬁve) podia. Along the bivium
(Echinodermata: Holothuroidea)—A New
Species of Holothurians from the Sea of Okhotsk
V. S. Levin
Paciﬁc Institute of Bioorganic Chemistry, Far East Division, Russian Academy of Sciences, Vladivostok, 690022 Russia
Received December 6, 2002
—This paper presents a description of
sp. nov. from the shelf of western Kam-
chatka. The new species is characterized by large elongated plates on the dorsal side of the body that have radi-
ating holes on one side of the spicule; a light coloration of tentacles; and, in adult animals, extended sclerites
on the processes interconnecting the radial and interradial plates of the circumpharyngeal calcareous ring.
, new species, Sea of Okhotsk.
Calcareous pharyngeal ring (scale—5 mm).