. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. 20 ANNALS OF THE SOUTH AFRICAN MUSEUM. 0 200 ? dromedaria 400 'punctate' 600 800 m * 'smooth' Fig. 8. Latitudinal water-depth distribution of sites with Cytherella dromedaria and C. namibensis sp. nov. Field outlines: solid line = 'punctate' variety of C. namiben- sis; dashed line = 'smooth' variety of C. namibensis. Distribution Brady (1880) originally recorded this species from 'Challenger' Station 104 in False Bay. The present data indicate that it is confined to the west and south coast continent
. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. 20 ANNALS OF THE SOUTH AFRICAN MUSEUM. 0 200 ? dromedaria 400 'punctate' 600 800 m * 'smooth' Fig. 8. Latitudinal water-depth distribution of sites with Cytherella dromedaria and C. namibensis sp. nov. Field outlines: solid line = 'punctate' variety of C. namiben- sis; dashed line = 'smooth' variety of C. namibensis. Distribution Brady (1880) originally recorded this species from 'Challenger' Station 104 in False Bay. The present data indicate that it is confined to the west and south coast continental margins south of 29,5°S (Fig. 7). Modern specimens were recovered from two sites: west of Hout Bay (94 m) and west of Cape Agulhas (73 m). Relict populations are confined to two areas. The northernmost lies on the middle to outer shelf (170-300 m—Fig. 8) between the Orange and Olifants rivers, where abundances are generally low (>5% at one of four sites). A southern population (central Cape Peninsula to the eastern Agulhas Bank) has UDL and LDL of 40-220 m, and includes the two modern sites. Abundances in the southern sector are relatively high (>5% at four of eleven sites), and the preferred water depth of the relict populations of Cytherella dromedaria was c. 100 m (Fig. 11). Cytherella namibensis sp. nov. Figs 6E-F, 9A-D, 10A ?Cytherella sordida Muller, 1894. Bold, 1966: 158-159, pi. 1 (fig. 10). ?Cytherella aff. C. sordida Muller, 1894. Dingle, 1976: 39, fig. 12 (39). Cytherella spp. Boomer, 1985: 12-13, pi. 1 (figs 16-17). Derivation of name From the type locality of the species adjacent to the Namib Desert, south-western 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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Keywords: ., bookcentury1800, bookdecade1890, booksubjectnaturalhistory, booky
