. Discovery reports. Discovery (Ship); Scientific expeditions; Ocean; Antarctica; Falkland Islands. 98 DISCOVERY REPORTS Proboscis very robust, almost three-fourths of trunk; maximum width near the apex (Fig. 46). Abdomen reaching a short distance beyond fourth lateral process, slightly elevated. Chelophore very well developed in all three adult specimens, almost as long as proboscis. Scape long and rather stout, length approximately four times the distal width. Chela short and thick set, length of palm twice the width; fingers widely gaping when closed. Palp nine-jointed^ as in the majority o
. Discovery reports. Discovery (Ship); Scientific expeditions; Ocean; Antarctica; Falkland Islands. 98 DISCOVERY REPORTS Proboscis very robust, almost three-fourths of trunk; maximum width near the apex (Fig. 46). Abdomen reaching a short distance beyond fourth lateral process, slightly elevated. Chelophore very well developed in all three adult specimens, almost as long as proboscis. Scape long and rather stout, length approximately four times the distal width. Chela short and thick set, length of palm twice the width; fingers widely gaping when closed. Palp nine-jointed^ as in the majority of the species of Amniothea; fourth segment rather longer than second (1-24 : i); seg- ments 1-4 together as long as proboscis; terminal segments rather setose. Ovigers each carrying a large mass of de- veloping ova and larvae; segments 6-10 of the usual type; segments 2-4 subequal and each slightly shorter than segment 5. Third leg long and siont; femur the longest segment; second coxa slightly longer than the sum of first and third. Terminal seg- ments as represented in Fig. 47 a and similar in all four limbs. Setides arranged in distinct longitudinal bands on the legs; they also occur on the abdomen, the transverse trunk ridges, lateral processes and chelophores. The female shows the usual sexual differ- ences of oviger and walking legs; the femur is more robust, being scarcely more than seven times as long as wide as against nine times in the male. The setules are also fewer in number. Measurements [mm.). Fig. 47. Terminal segments of third leg of: a. Ammothea gigantea, : x 6. b. A. striata (Mobius): x 8. J (holotype) ? Length of proboscis ... 167 19-2 Greatest width of proboscis .. 6-9 7-9 Length of trunk 21-8 23-0 Length of cephalic 9-2 10-4 Width of anterior cephalic lob es ... 7-8 7-8 Width across second lateral processes 18-9 19-2 Length of abdomen ... 6-9 7-3 Third leg: First coxa 5-0 44 Second coxa 10-6 ii-o Third coxa 4-2 5-4 Femur 34-0 41-2 First tibi
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Keywords: ., bookcentury1900, booksubjectocean, booksubjectscientificexpediti
