. Annals of tropical medicine and parasitology. Parasites. 252 long, and passes dorsal to the ventral water vessel and median nerve to reach the-edge of the segment (figs, i and 2). The cirrus is long, slightly coiled, and is armed with very minute spines. Packets of spermatozoa of various shapes and sizes, but usually oval with pointed extremities, are abundant in both the outer and inner seminal vesicles. In the majority of mature segments, the measurements of these various structures are approximately as follows: — Length of outer vesicula seminalis Greatest breadth of vesicula seminalis Le
. Annals of tropical medicine and parasitology. Parasites. 252 long, and passes dorsal to the ventral water vessel and median nerve to reach the-edge of the segment (figs, i and 2). The cirrus is long, slightly coiled, and is armed with very minute spines. Packets of spermatozoa of various shapes and sizes, but usually oval with pointed extremities, are abundant in both the outer and inner seminal vesicles. In the majority of mature segments, the measurements of these various structures are approximately as follows: — Length of outer vesicula seminalis Greatest breadth of vesicula seminalis Length of inner vesicula seminalis Greatest breadth of vesicula seminalis Total length of cirrus pouch Greatest breadth of cirrus pouch 550/t 15°/' ?joo/x ZOOft 1,000^ lOO/i. m n. Fig. I. A. rbodesierm^. Segment, viewed anteriorly, showing male genitalia. , cirrus sac ; , external vesicula seminalis ; , internal vesicular seminalis ; , longitudinal muscles ; /.«., lateral nerves; , median nerve ; , receptaculum seminis; /.. testes; f., vagina ; ventral excretory vessel; z'.e., vitelline glands, x 40. Ovtiry. This first appears about segment 24 and disappears about segment 34; it attains its maximum development about segment 30. The poral wing has a lateral diameter of about i mm. and the aporal wing of 2'2 mm. The median axis of the ovary is slightly en the pore side. The ovary consists of a series of vertical, club-shaped columns arising from a ventral horizontal base. The largest column measures about 170n dorso-ventrally and 60ft laterally. The columns decrease m size towards the periphery of the ovary (ftg. 2). In the antero-posterior direction they are never more than two 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 Liverpool Sch
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectparasites, bookyear19
