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The Isopods of Abyssal Depths in the Atlantic Ocean

The Isopods of Abyssal Depths in the Atlantic Ocean

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Figure 41. A-E:<br />

C: uropod; D:<br />

male.<br />

Syneurycope multisp<strong>in</strong>a, new species<br />

Figure 42 E-K<br />

Synonyms: None.<br />

Diagnosis: Syneurycope with a row <strong>of</strong> four to six sp<strong>in</strong>es<br />

<strong>in</strong> longitud<strong>in</strong>al row on ei<strong>the</strong>r side <strong>of</strong> midl<strong>in</strong>e <strong>of</strong> dorsum<br />

<strong>of</strong> cephalon. First pleonal somite completely separated<br />

from pleotelson. Maxilliped without coupl<strong>in</strong>g hooks.<br />

Mandibular palp well developed, apical article setiferous.<br />

Outer lobe at apex <strong>of</strong> male first pleopod<br />

shorter than <strong>in</strong>ner lobe.<br />

Measurements: Holotype male length 4.3 mm.,<br />

width pleon 0.6 mm., female allotype length 4.2 mm.,<br />

width pleon 0.6 mm.<br />

Type locality: South <strong>Atlantic</strong>, L.G.O. Biotrawl<br />

No. 52, types plus one female paratype.<br />

Distribution: Known only from type locality.<br />

Aff<strong>in</strong>ities: This species is unique <strong>in</strong> hav<strong>in</strong>g sp<strong>in</strong>es<br />

on <strong>the</strong> dorsum <strong>of</strong> <strong>the</strong> cephalon.<br />

ROBERT J. MENZIES<br />

Syneurycope heezeni, n. sp. A: dorsal view female holotype; B: mandible;<br />

maxilliped; E: gnathopod. F: Syneurycope parallela Hansen, dorsal view<br />

Genus: ACANTHOCOPE Beddard<br />

Synonyms: Acanthocope Beddard, 1885, p. 922; —<br />

Beddard, 1886, pp. 78-79; — Menzies, 1956a, p. 2.<br />

Diagnosis: Eurycopidae with uniramous uropoda.<br />

Dorsum <strong>of</strong> body sp<strong>in</strong>ous. Pleon with lateral sp<strong>in</strong>e-like<br />

projections. Front <strong>of</strong> cephalon well def<strong>in</strong>ed. Last<br />

three peraeonal somites immovable. Pleon with a<br />

s<strong>in</strong>gle somite. Coxal plates not visible <strong>in</strong> dorsal view<br />

on peraeonal somites 2-4 <strong>in</strong>clusive. Pleon completely<br />

fused with peraeon.<br />

Type species: Acanthocope sp<strong>in</strong>icauda Beddard.<br />

Composition: Four species are known from Acanthocope.<br />

<strong>The</strong>se are as follows:<br />

Species<br />

1. sp<strong>in</strong>icauda Beddard<br />

2. acutisp<strong>in</strong>a Beddard<br />

3. atlantica (Beddard)<br />

4. sp<strong>in</strong>osissima Menzies<br />

Depth Range {Meters)<br />

Least Greatest<br />

3290<br />

2650<br />

1646<br />

1169<br />

3290<br />

2650<br />

1646<br />

1169

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