Archive image from page 445 of Discovery reports (1934) Discovery reports discoveryreports08inst Year: 1934 382 DISCOVERY REPORTS The MARGINAL LAPPETS are not pointed and vaulted as somewhat schematically figured by Vanhoeffen (1903, pi. v, fig. 26). In young specimens (fig. 7 a) they are broad and spoon-shaped, and lie side by side. In older individuals they are relatively longer, elongated, and have grown together at their bases so as to form pairs and lie slightly one above the other, Hke scales (Fig. 7 b). The WARTS ON THE LAPPETS shoW aS a rule the number and arrangement described by Va
Archive image from page 445 of Discovery reports (1934) Discovery reports discoveryreports08inst Year: 1934 382 DISCOVERY REPORTS The MARGINAL LAPPETS are not pointed and vaulted as somewhat schematically figured by Vanhoeffen (1903, pi. v, fig. 26). In young specimens (fig. 7 a) they are broad and spoon-shaped, and lie side by side. In older individuals they are relatively longer, elongated, and have grown together at their bases so as to form pairs and lie slightly one above the other, Hke scales (Fig. 7 b). The WARTS ON THE LAPPETS shoW aS a rule the number and arrangement described by Vanhoeffen, but they are larger, much stouter, and do not so much resemble round pearls (' Glas- perlen'), being more like elongated drops. They lose their pigmentation more easily than the deeper lying parts of the lappets and are therefore con- spicuous as white transparent spots between the surrounding dark brown pigment. In many cases I could only distinguish seven warts in the way described by Browne {loc. cit), three on each side, and one in the middle; in these the innermost warts were miss- ing. In other cases there were five on each side, and one in the middle. Some- times the warts on each side of the rhopalium coalesce to a more or less continuous longitudinal irregular ridge or crista (see Fig. 7 a on the left). Sometimes a few irregularly dis- persed 'pearls' are found between Fig. 7. y4;o//a f//««/, Vanhoeffen. Pedalia and marginal lappets with 'glass beads.' a, of a young specimen, x 5. b, of an older specimen, x 5. the regularly arranged ones, two median ones. Sometimes a small longitudinal thickening of the exumbrellar jelly is found above the rhopalium itself. A few specimens have eleven warts, four on each side, two in the middle and one above the rhopalium. In several cases the most distal warts near the end of the lappet are the largest and have properly the form of a drop. The RHOPALIA show no peculiarities except that they are surrounded at the ba
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