. Bulletin - United States National Museum. La science. BATHYTEUTHIS 105 CALMAR BATHYPÉLAGIQUE. Figure 22.-section verticale, 25°W, 55°-63° S salimty ;°/oo, sigma-t. Points de capture de Balhyteuthis abyssicola. 600 m et à 58°30'S il plonge à environ 1000 m, bien que la valeur est assez élevé. Au sud de la convergence en-dessous de 1000 m la concen- tration d'oxygène est toujours au-dessus de 4,80 ml/L et augmente avec la profondeur à plus de 5,25 ml/L. Au nord de la convergence les plus faibles, 4.26-4.29 ml/L ; la couche minimale est à 350-600 m. Eltanin 8 croisière croisière a été le seul à travailler les eaux visées par le 2

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. Bulletin - United States National Museum. Science. BATHYPELAGIC SQUID BATHYTEUTHIS 105. Figure 22.—Vertical section, 25°W, 55°-63°S; salimty°/oo, sigma-t. Capture points of Balhyteuthis abyssicola. 600 m and at 58°30'S it dips to about 1000 m, although the value is quite high. South of the convergence below 1000 m the oxygen concen- tration is always above 4.80 ml/L and increases with depth to well over 5.25 ml/L. North of the convergence the lowest concentrations are 4.26-4.29 ml/L; the minimum layer lies at 350-600 m. Eltanin Cruise 8 was the only cruise to work the waters covered by the 25°W sections. During that cruise twenty-five 3-meter IKMT tows were made below 500 m in depths normally inhabited by B. abyssicola. Of these, six tows were successful in capturing this species. These captures, made between 22° and 29°W, are plotted on the 25°W sec- tions. Four captures, with five specimens, were taken between 1490 and 1922 m; two specimens were taken in nets that fished below 2500 m: one larva at 2562 m and one adult at 2743 m. These two specimens probably were taken somewhat shallower. All captures were made in water of less than 1° C: one between 0.5° and 1° C, three between 0° and 0.5° C and two below 0° C. All captures were in salinities less than 34.70%o, in densities greater than sigma-t=27.85, and in oxygen concentrations. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. United States National Museum; Smithsonian Institution; United States. Dept. of the Interior. Washington : Smithsonian Institution Press, [etc. ]; for sale by the Supt. of Docs. , U. S. Govt Print. Off.

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