The Isopods of Abyssal Depths in the Atlantic Ocean

150 ROBERT J. MENZIES
Figure 39. Storthyngura vemae, n. sp. A: dorsal view male holotype; B: sixth peraeopod;
C: uropod; D: first antenna; E: third pleopod; F: first peraeopod; G: second
pleopod; H: maxilliped; I: maxillipedal epipod; J: first pleopod; K: ventral view anus
and uropod; L: mandible.
Distribution: Known only from type locality.
Affinities: This species is close to S. truncata
Richardson, from which it differs in having the pleonal
apex rounded, not straight.
Storthyngura species indeterminable
Fragments of Storthyngura were taken from L.G.O.
Biotrawl No. 47, one female fragment, and L.G.O.
Bio trawl No. 214 one juvenile related to S. symmetrica.
Genus: SYNEURYCOPE Hansen
Synonyms: Syneurycope Hansen, 1916, pp. 130-
131; —Menzies, 1956a, pp. 5-6; Ilychthonos Barnard,
1920, pp. 414-415.
Diagnosis: Eurycopidae with pleon consisting of
(one? or) two somites. Last three peraeonal somites
fused into a solid piece. Uropoda biramous. Coxal
plates visible in dorsal view on peraeonal somites 2-4
inclusive. Third article of maxillipedal palp with
characteristic denticles along inner margin. Lateral
border of pleon without spine-like extensions.
(Modified from Menzies, 1956a, p. 5, with corrections.)
Type species: Syneurycope parallela Hansen, 1916, pp.
131-132.
Composition: The species belonging to this genus
are all markedly attenuate. Three described species
are known from bathyal to abyssal depths.
parallela Hansen 3474 meters
hanseni Menzies 5104-5122 meters
capensis Barnard 1280 meters