. Fig. 40. Ophiurolepis partita (Koehler). Part of oral side (a). xi8. Dorsal side {b). Ag. Part of arm, side view (c). <i8. diameter. This larger size may account for the conspicuous difference noted in the size of the primary disk plates, these being represented in Koehler's pi. x, fig. 94, as quite small, widely separated by a considerable number of small plates, whereas in the present specimens they are much larger, separated by only a few small plates, or even contiguous. The shape of the radial shields is also somewhat different from that shown in the figure quoted. They may be irregu
. Fig. 40. Ophiurolepis partita (Koehler). Part of oral side (a). xi8. Dorsal side {b). Ag. Part of arm, side view (c). <i8. diameter. This larger size may account for the conspicuous difference noted in the size of the primary disk plates, these being represented in Koehler's pi. x, fig. 94, as quite small, widely separated by a considerable number of small plates, whereas in the present specimens they are much larger, separated by only a few small plates, or even contiguous. The shape of the radial shields is also somewhat different from that shown in the figure quoted. They may be irregularly subdivided (Fig. 40 b). Koehler states that the plates of the disk are " tres fortement granuleuses ". This is rather exaggerated, con- veying the impression that they are covered with separate granules, which they are not. It is only the usual calcareous substance of the plates which is rather coarse, giving the surface of the plates a more or less conspicuous granular appearance.
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Keywords: ., bookcentury1900, booksubjectocean, booksubjectscientificexpediti
