. Bulletin of the Natural History Museum Zoology. I. Fig. 8a-b Kotorella pronosoma {Nybelinia herdmani). a. metabasal tentacular armature, external surface, b. basal tentacular armature, external surface. Scale bars=10 um. proglottids: 71-85 in diameter). Testes encircle the female genital complex (Fig. 9). Female genital complex median. Remarks. In 1906, Shipley & Hornell described Tetrarhynchus herdmani from the alimentary canal of Himantura imbricata and Rhynchobatus djeddensis from the Gulf of Mannar (Sri Lanka). However, only a few measurements were given and the tentacular hooks were
. Bulletin of the Natural History Museum Zoology. I. Fig. 8a-b Kotorella pronosoma {Nybelinia herdmani). a. metabasal tentacular armature, external surface, b. basal tentacular armature, external surface. Scale bars=10 um. proglottids: 71-85 in diameter). Testes encircle the female genital complex (Fig. 9). Female genital complex median. Remarks. In 1906, Shipley & Hornell described Tetrarhynchus herdmani from the alimentary canal of Himantura imbricata and Rhynchobatus djeddensis from the Gulf of Mannar (Sri Lanka). However, only a few measurements were given and the tentacular hooks were de- scribed as being similar and of the same size (10 um) along the tentacle. Southwell (1929a) cited Shipley and Hornell (1906) and listed T. herdmani with T. perideraeus as a species with extremely minute (practically equal in size) hooks arranged in spirals (Southwell, 1929b). Pintner( 1930) re-described the type material of T. herdmani and reported a homeoacanthous, heteromorphous arma- ture. His description of the tentacles with about 10 small hooks per row, tightly arranged and forming a mosaic on one side, was emended by Dollfus (1942), who reported 14 um large hooks with a large base. The drawings of Pintner (1930, Figs 67a-b') also give a metabasal hook size between 10-11 um on the lateral (antibothridial) and 10-14 um on the medial (bothridial) tentacle surface (7-8 um of basal antibothridial hooks and 10-14 urn of basal bothridial hooks? / Fig. 67a'and 67b'). Thus, the drawings of the tentacular armature as given by Pintner (1930) correspond to the armature of the type material as described above. Our scolex measurements of the types oiN. herdmani also correspond to those given by Pintner (1930) and Dollfus (1942) for N. herdmani (Table 1). Euzet & Radujkovic (1989) re-described Kotorella pronosoma (Stossich, 1901) from the spiral valve of Dasyatis pastinaca L. from the Mediterranean Sea. Though the absolute values of their scolex measurements are about l/3rd sm
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