. A TETRAXONIDA 317 arranged in linear series on ridge-like portions of surface, or at apices of lobular outgrowths; pores apparently arranged generally over surface; texture compressible but elastic; colour, in spirit, very dark brown; main ^^ ^,<y^ skeleton an isodictyal reticulation of smooth styli | \ [ forming multispicular primary fibres, about six spi- cules thick, running vertically to surface, connected at intervals by irregularly arranged single spicules; Fig. 28. SteMoryx discovereyi, dermal skeleton composed of irregular brushes of Examples of variation in ends of tor- tor
. A TETRAXONIDA 317 arranged in linear series on ridge-like portions of surface, or at apices of lobular outgrowths; pores apparently arranged generally over surface; texture compressible but elastic; colour, in spirit, very dark brown; main ^^ ^,<y^ skeleton an isodictyal reticulation of smooth styli | \ [ forming multispicular primary fibres, about six spi- cules thick, running vertically to surface, connected at intervals by irregularly arranged single spicules; Fig. 28. SteMoryx discovereyi, dermal skeleton composed of irregular brushes of Examples of variation in ends of tor- tornota arranged more or less at right angles to sur- ""^^' ' '°°°' face; megascleres smooth, often slightly curved, styli, 0-225 by o-oo6 mm., and straight tornota, with ends mucronate, strongylote or truncate and sparingly spined, occasionally asymmetrical, 0-165 by 0-005 "^i"-! microscleres, polydentate isochelae, with usually five teeth, 0-035-0-045 mm. long. Remarks. The present species differs from the genotype in the absence of a pedicel and the smaller size of the styli, from S. dcntata in having smooth styli, instead of acanthostyli, from S. diversiancorata in having only one sort of isochela, and from S. pliiridentata, which it most nearly resembles, in the smaller size of the isochelae. Genus Kirkpatrickia, Topsent. Kirkpatrickia variolosa (Kirkpatrick). Tedania variolosa, Kirkpatrick, 1907, p. 279; /(/., 1908, p. 32, pi. xxi, fig. i, pi. xxv, fig. i; Kirkpatrickia variolosa, Topsent, 1912, p. 3. Occurrence. St. 149: South Georgia, 200-234 'ii-! St. 175: South Shetlands, 200 in.; St. WS 27: South Georgia, 106-109 n^- Remarks. The specimens in life were coloured bright crimson or deep magenta red. Distribution. Victoria Land. Kirkpatrickia coulmani (Kirkpatrick) (Plate LV, fig. 5). Tedania coulmani, Kirkpatrick, 1907, p. 280; /(/., 1908, p. 33, pi. xxi, fig. 2, pi. xxv, fig. 2; Kirkpatrickia coulmani, Topsent, 1912, p. 3. Occurrence. St. 42: South
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