. OCTOPODIDAE 393 Dimefisions {in mm.). Dorsal mantle, length ... ... 36 Head, width, % mantle length ... 86 Mantle, width, % mantle length ... iii Arms, % total length ... ... 57 Suckers, diameter, % mantle length 8-3 Web, index ... ... ... 60 The body is globular, and the head distinctly narrower than the body. It is, however, rather broader than is usual in charcoti. The eyes are distinctly larger than in most examples of the latter. The arms (see above) are very short for an adult Octopod, being amongst the shortest recorded. The suckers are small and close set. The sectors of the web are,
. OCTOPODIDAE 393 Dimefisions {in mm.). Dorsal mantle, length ... ... 36 Head, width, % mantle length ... 86 Mantle, width, % mantle length ... iii Arms, % total length ... ... 57 Suckers, diameter, % mantle length 8-3 Web, index ... ... ... 60 The body is globular, and the head distinctly narrower than the body. It is, however, rather broader than is usual in charcoti. The eyes are distinctly larger than in most examples of the latter. The arms (see above) are very short for an adult Octopod, being amongst the shortest recorded. The suckers are small and close set. The sectors of the web are, I think, subequal, C and D being slightly deeper than the others. The web is very large, and attains the great depth of 60 per cent of the arms. The surface is rather a rich, light purple dorsally, becoming paler ventrally. It is covered dorsally and laterally by a number of close-set warts. These are very curious, and Fig. 16. Thaumeledone gunteri. Radula. (The confer on the animal a rather mossy appear- remains of the degenerate second laterals are ance. On the sides of the web and on the arms they tend to be circular and bubble-like. On the anterior surface of the web, head and body, they are branched and irregular, and it is here that they are seen to stand out very clean-cut from the surface. They remind me of the similarly clean-cut warts in Octopus pallida, though they are not stellate in gimteri. It is possible that they may be like those of a form of charcoti. Joubin (1906, p. 6) says that in the latter some of the warts were probably branched. From the figure {loc. cit. pi. i, figs. 1-2) it is quite evident that, in charcoti, the warts on the head and body are in contact with each other, while in gunteri they are quite separate. In Joubin's later figure (i9i4[?], p. 36) and in one of the ' Terra Nova' specimens the warts are quite separate but, in the former, they are granular, and in the latter, they are mammiform, both very unlike those in gimteri. The funnel is sh
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectscientificexpedition
