Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum . segment. All spines relatively slender. Origin of terminalseta almost equidistant between two subterminal spines. Second segment with anumber of rows of fine spinules, their relative positions illustrated in Figure General body form similar to female, but smaller in size (Fig. 3C). Totallength 0,49-0,53 mm (mean of eight specimens 0,51 mm). Urosome slender, fivesegmented. Anal segment and caudal furcae as in female. Antennule of about thirteen segments (Fig. 3D), prehensile. Segmentsdifficult to define. Struc
Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum . segment. All spines relatively slender. Origin of terminalseta almost equidistant between two subterminal spines. Second segment with anumber of rows of fine spinules, their relative positions illustrated in Figure General body form similar to female, but smaller in size (Fig. 3C). Totallength 0,49-0,53 mm (mean of eight specimens 0,51 mm). Urosome slender, fivesegmented. Anal segment and caudal furcae as in female. Antennule of about thirteen segments (Fig. 3D), prehensile. Segmentsdifficult to define. Structure and arrangement of setae illustrated in Figure cephalic appendages and legs 1-4 as in female. Leg 5 first segment and ornamentation similar to female (Fig. 3E). Secondsegment about twice as long as wide, inner margin straight, with two slenderplumose setae in distal half. Setae slightly longer than second segment. Terminalsetae distinctly plumose and almost twice as long as second segment. Rounded NEW SPECIES OF HALICYCLOPS FROM ESTUARIES IN TRANSKEI 367. Fig. 3. A-B. Female. A. Leg 4. B. Leg 5. C-F. Male. C. 0,49 mm male. D. Antennule. E. Leg 5. F. Leg 6. ? ?!????? ill -»• 368 ANNALS OF THE SOUTH AFRICAN MUSEUM outer lateral margin with two short, finely serrated, slender spines. Length ofspines about half the length of lateral setae on the inner border of of segment with a number of fine spinules. Leg 6 (Fig. 3F) with a plumose outer seta almost equal in length to terminalseta of leg 5, borne on a produced lobe. Inner lobe broad, bearing a sharpserrated spine and a short spine-like seta. DISCUSSION The genus Halicyclops Norman, 1903 is widely scattered geographically andis known from forty-seven described species. A key to the species by Lindberg(1957) and a paper by Wilson (1958) were valuable aids to workers and did much toemphasize important diagnostic characteristics. At the time of Lindbergs (1957)publication, thirty-three
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Keywords: ., bookcentury1800, bookdecade1890, booki, booksubjectnaturalhistory
