. Fig. 33. S. corniculum A. a, Mastigopus i moulted from Acanthosoma; b, telson of Acanthosoma; c, telson of Mastigopus. size but unsegmented. Maxillipede 3 and leg 3 nearly the same length. Legs 2 and 3 chelate. Legs with long twisted vestiges of exopods. Pleopods long; pleopods 3-5 with setose endopods, the fifth the longest; pleopod 2 with rudimentary, non-setose endopod. Uropods slender, about 11 times as long as wide; setose margin nearly, or quite, twice the bare part. There is some variation in the number of setae on the telson and in degree of development of the pleopods. Also the vest
. Fig. 33. S. corniculum A. a, Mastigopus i moulted from Acanthosoma; b, telson of Acanthosoma; c, telson of Mastigopus. size but unsegmented. Maxillipede 3 and leg 3 nearly the same length. Legs 2 and 3 chelate. Legs with long twisted vestiges of exopods. Pleopods long; pleopods 3-5 with setose endopods, the fifth the longest; pleopod 2 with rudimentary, non-setose endopod. Uropods slender, about 11 times as long as wide; setose margin nearly, or quite, twice the bare part. There is some variation in the number of setae on the telson and in degree of development of the pleopods. Also the vestiges of the exopods of the legs may be much reduced. Colour. Red in thorax as in Acanthosoma. The legs may be colourless or with red distally. Later stages become more and more red, especially on the legs (Fig. 35). Mastigopus 2 was obtained by moult from stage i. Stage 2 differs very little from
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Keywords: ., bookcentury1900, booksubjectocean, booksubjectscientificexpediti
