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Show 320 m MR. CYRIL CROSSLAND OX THE [Feb. 16, nearly colourless but for the red gills and blood-vessels and, posteriorly, the gut. Others, including specimens from Wasin Harbour, of nearly the same size, were of a light brown colour anteriorly, somewhat darker in the intersegmental grooves, but nearly all the preserved specimens are now practically colourless. One specimen shows mottling of brown pigment anteriorly as far back as the middle of the gill-region. The prostomium is normally somewhat conical in shape, with a very small notch in its anterior border, though it is deeply grooved below (PL X X I . figs. 9 & 10 and text-fig. 62, b). In two out of the ten large African specimens specially examined it was, however, as broad distally as at its base, and in two others, as in one of the Text-fig. 62. Heads of three specimens of E. indica, two of which (a and c) are of abnormal shape. The figure shows also variations in the peristomium and in the thickness of the tentacles. small Malclivan examples, its margin was quite entire. Compare the drawings in text-fig. 62. The eyes are large and of the form of a rounded triangle. The tentacles in all examples are quite smooth, without trace of ringing. The smooth tentacular cirri are remarkably long, extending usually beyond the anterior border of the buccal segment, and in some cases even to the front of the prostomium. These proportions are shown in text-fig. 62 and in PL X X I . fig. 9. The jaw-apparatus is characterised by the small size, delicacy and calcareous composition of its plates, and by the asymmetry of the great dentals. As in E. antennata, E. vittata, and certain |
