. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. 48 ANNALS OF THE SOUTH AFRICAN MUSEUM 1979-transect data. Seen against a background of an extensive distribution, particularly in the South Atlantic (Fig. 18), Electrona risso should be excluded from the Eastern Pattern and be considered a widespread species within the apparent ecological constraints. Hygophum benoiti has been described as a temperate-semisubtropical species by Backus et al. (1977), and as a temperate-subtropical species, but within the Northern Temperate Pattern, by Hulley (1981). T
. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. 48 ANNALS OF THE SOUTH AFRICAN MUSEUM 1979-transect data. Seen against a background of an extensive distribution, particularly in the South Atlantic (Fig. 18), Electrona risso should be excluded from the Eastern Pattern and be considered a widespread species within the apparent ecological constraints. Hygophum benoiti has been described as a temperate-semisubtropical species by Backus et al. (1977), and as a temperate-subtropical species, but within the Northern Temperate Pattern, by Hulley (1981). The present transect data and indicator analyses suggest that, while Hygophum benoiti is indeed distributed in both temperate and subtropical regions (Fig. 19) and attains sexual maturity throughout its distributional range, it shows a closer affinity to the Subtropical. 50 40 30 Fig. 19. Distribution of Hygophum benoiti. Region than to the Temperate Region (Table 5). This suggestion was recently confirmed during the 1982-Mid-Atlantic Ridge Expedition, north of the Azores, where the species was taken in any quantity only south of about 44°S (unpublished data). This means that the distribution pattern of H. benoiti may be different from those of other species presently included in the Temprate- subtropical Pattern, namely Ceratoscopelus maderensis, Diaphus rafinesquii, Notoscopelus bolini, and Symbolophorus veranyi. This warrants a closer examination both of the above-mentioned temperate-subtropical species, and the species currently held under the North Subtropical Subpattern, Lampadena urophaos 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 South African Museum. Cape Town : The Museum
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