. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. 5mm Fig. 1. Psolidium vitrewn Ohshima. Spicules and calcareous ring. A. Scales from dorsal wall. B. Deposits from sole. C. End plate and other perforated plates from ventral podia. D. Plates and rods from dorsal podia. E. Tentacle plates. F. One radial and two interradial plates of calcareous ring. A—scale a; B-E—scale b. Description Form cylindrical, dorsal surface arched, ventral flattened, damaged. Length 10 mm, width in mid-body 3 mm. Colour white, in alcohol. Anterior and posterior ends turned u
. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. 5mm Fig. 1. Psolidium vitrewn Ohshima. Spicules and calcareous ring. A. Scales from dorsal wall. B. Deposits from sole. C. End plate and other perforated plates from ventral podia. D. Plates and rods from dorsal podia. E. Tentacle plates. F. One radial and two interradial plates of calcareous ring. A—scale a; B-E—scale b. Description Form cylindrical, dorsal surface arched, ventral flattened, damaged. Length 10 mm, width in mid-body 3 mm. Colour white, in alcohol. Anterior and posterior ends turned up, mouth and anus dorsal, oral and anal cones not conspicuous; anus surrounded by five calcareous plates, each flanked by anal papillae. Tentacles 10, eight large and bushy, ventralmost two very much reduced. Sole displaced anteriorly, oval, mm in length, bordered by a rim of well-developed pedicels in a single zigzag row in each ventrolateral ambulacrum, none detected in damaged odd ambulacrum; total number of ventral pedicels 18. Dorsal pedicels minute, scarce. Alimentary canal lost; polian vesicle and stone canal not seen. Calcareous ring (Fig. IF) simple, radial and interradial plates with pointed anterior projections, interradial plates about two-thirds the size of radial plates, latter with anterior depression for insertion of retractor muscle; posterior surface of radial plates deeply notched, that of interradial plates concave. Gonad. 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
