Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum . 45, pi. 2 (fig. 8). Naumov & Stepaniants, 1972:47, fig. 9. Symplectoscyphus mawsoni E. A. Briggs, 1939: 35, fig. 2, pi. 16 (figs 1-2). Naumov & Stepani-ants, 1972: 46, fig. 8. Stations 10/30-A; 8/24-B. Description The first colony (10/30-A) consists of two stems 56 mm in maximumlength, and a number of fragments. Basal part of stem lightly fascicled for16-30 mm, the rest unfascicled and straight. Stem divided into internodes bydistinct oblique nodes sloping in alternate directions. Each internode with adistal apophysis
Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum . 45, pi. 2 (fig. 8). Naumov & Stepaniants, 1972:47, fig. 9. Symplectoscyphus mawsoni E. A. Briggs, 1939: 35, fig. 2, pi. 16 (figs 1-2). Naumov & Stepani-ants, 1972: 46, fig. 8. Stations 10/30-A; 8/24-B. Description The first colony (10/30-A) consists of two stems 56 mm in maximumlength, and a number of fragments. Basal part of stem lightly fascicled for16-30 mm, the rest unfascicled and straight. Stem divided into internodes bydistinct oblique nodes sloping in alternate directions. Each internode with adistal apophysis, alternately on the left and right, which bears a hydrothecaand two hydrocladia, one on each side of the hydrotheca, the two rows ofhydrothecae in one plane. Many of the hydrocladia and hydrothecae of thelower half of the stem missing or damaged, those in the upper half betterpreserved. Each pair of hydrocladia forming an angle of about 40° with thestem and about 90° with each other. Hydrocladium divided into regular inter- 30 ANNALS OF THE SOUTH AFRICAN MUSEUM. Fig. 8. Symplectoscyphus mawsoni Briggs. A. Thick part of stem in side view showing origins ofhydrocladia. B. Hydrotheca. C. Gonotheca with external marsupium. D. Part of hydro-cladium showing bifurcation. E. A hydrotheca from Tottons material (BM )attributed by him to Sertularella biformis, here included in S. mawsoni. Scale in mm/10. HYDROIDS FROM THE KERGUELEN AND CROZET SHELVES 31 nodes by straight nodes, each bearing a hydrotheca near the distal end; dividingdichotomously at the distal end of the fourth internode, one limb of the dicho-tomy being slightly thicker than the other; both limbs sometimes dividingdichotomously once or twice more. The two rows of hydrothecae on the hydro-cladium not in one plane but forming an acute angle between them. Hydrothecacompletely free from internode, very delicate and often crumpled in basal part,curved outwards, widening towards aperture, with three well-develo
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Keywords: ., bookcentury1800, bookdecade1890, booki, booksubjectnaturalhistory
