16 MARIE V. LEBOUR. 
Exopodite with 2 segments, the proximal segment with a bristle inside 
and a thorn outside, the distal segment with 4 bristles inside, a terminal 
blade, and 3 thorns outside. 
Appendage X. 47TH Swimmine Foor (Plate 5, Fig. 14). The proximal 
segment of the basipodite with an inside bristle, the distal segment with 
a thorn outside. 
Endopodite with 2 segments, the proximal segment with one bristle 
inside, the distal segment with 3 bristles inside, 2 terminal bristles, and 
2 bristles outside. 
Exopodite with 2 segments, the proximal segment with an outside 
thorn, the distal segment with 4 bristles inside, a terminal blade, and 3 
thorns outside. 
Appendage XI. 5rxH Swimmine Foor (Plate 5, Fig. 15). 
Endopodite unsegmented, with 6 bristles. 
Ezxzopodite unsegmented, with 3 bristles inside, a terminal blade, and 3 
thorns outside. 
Stace V (Plate 4, Figs. 5 and 9). Body much longer, the full number of 
segments in the thorax and urosome. Antennules, antenne, mandibles, 
maxillules, maxille, and swimming feet I to IV like the adult. The 
maxilliped has not yet the full number of bristles (Plate 5, Fig. 16). Ist 
segment with 5 bristles, 2 with 3, 4 with 2 inside and one outside, terminal 
segment with 4 bristles. The swimming feet (Plate 5, Figs. 17-21) are 
all like the adult with the exception of the last, which, although having 
the full number of bristles, has only 2 segments to the endopodite and 
exopodite. 
Stage VI is the fully developed copepod. 
LITERATURE. 
1902. Gran, H. H.—Das Plankton des Norwegischen Nordmeeres. Report 
on Norwegian Fishery and Marine Investigations. Vol. II, 1902, 
No. 5. 
1881. GropBEn, C.—Die Entwicklungsgeschichte von Cetochilus septen- 
trionalis Goodsir. Arbeiten aus dem Zoologischen Institute der 
Universitat Wien, ete. Vol. III, Part 3. 
1906. Osrre, M.—Die Metamorphose der Plankton-Copepoden der Kieler 
Bucht. Wissenschaftliche Meeresuntersuchungen herausgegeben 
von der Kommission zur Wissenschaftlichen Untersuchung der 
deutschen meer in Kiel, etc. N.S. Vol. 1X. Abt. Kiel. 
1903. Sars, G. O.—An Account of the Crustacea of Norway. Vol. IV, 
Copepoda Calanoida. 
The work on the Copepoda of the Danish Ingolf Expedition, Vol. ITI, 
Part 4, 1915, by Carl With, came to hand after the present paper was in print. 
