. Discovery reports. Discovery (Ship); Scientific expeditions; Ocean; Antarctica; Falkland Islands. 346 DISCOVERY REPORTS DEVELOPMENTAL PHASES It was possible to glean some information on the developmental phases of four of the species encountered. This is presented below. Nyctiphanes capensis Hansen Egg. Size range 0-34-0-38 mm. in formalin. The eggs are carried in two pear-shaped sacs attached by their anterior broad sides to the endopodites of the sixth and seventh cormopods, and by their narrow posterior ends to the exopodites of the eighth cormopods (precisely as in N. simplex). Only one
. Discovery reports. Discovery (Ship); Scientific expeditions; Ocean; Antarctica; Falkland Islands. 346 DISCOVERY REPORTS DEVELOPMENTAL PHASES It was possible to glean some information on the developmental phases of four of the species encountered. This is presented below. Nyctiphanes capensis Hansen Egg. Size range 0-34-0-38 mm. in formalin. The eggs are carried in two pear-shaped sacs attached by their anterior broad sides to the endopodites of the sixth and seventh cormopods, and by their narrow posterior ends to the exopodites of the eighth cormopods (precisely as in N. simplex). Only one female with intact egg-sacs was found in the collection (Fig. 2). There were fourteen eggs in one sac and sixteen in the other. The perivitelline space of the eggs is small (Fig. 3 a).. Fig. 2. Nyctiphanes capensis. Ovigerous female. Nauplius. The nauplius stage (Fig. 36, c) is passed within the egg-sac. The specimens shown in the figure were removed from the unruptured egg-sac of the female. The length of the two specimens examined was 0-42 mm. each. The larva is simple and egg-shaped. It has two small processes at the posterior end, each flanked by one smaller process. The first antenna is uniramous with three terminal setae. The second antenna is biramous, the rami with four and five terminal setae. The mandible is bud-like and naked. Pseudometanauplius. Only one specimen of this stage was found (Fig. 3 d, e). It was removed from the ruptured egg-sac of a female. It is probable that the rest had already hatched out. Length of specimen 0-48 mm. The carapace is oval in dorsal view. The first antenna is unchanged. The second antenna is the same as in the nauplius stage. A median eye has appeared. The anterior lip and buds of three metanaupliar limbs have appeared. There is now a short tail with one pair of postero-lateral and two pairs of terminal spines. The carapace, mandibles, anterior lip, limb-buds and tail are covered by a thin Please note that these images are ext
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