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the ventral side, particularly outside a line between the base of the antennule and the first 
pair of trunk-legs, with peculiar, irregular stripes or with keels and knots. 
OVISACS. Real ovisacs are not found; the eggs are laid in one free lump or in 
two (or three) lumps. 
LARVA. Is only known of one species. Antenne about the length of the anten- 
nule. The maxillule have a short but distinct basal part and two stout branches, the anterior 
of which is very long. The maxillipeds are situated closely behind the 3-jointed maxille ; 
all joints of both pairs are smooth. The peduncle of the natatory legs is very broad. 
The third segment of the abdomen, together with the broad caudal stylets, which are not 
set off by an articulation, is almost as broad as and nearly double the length of the second 
segment. The longest seta of the caudal stylets is only a little longer than the abdomen 
and not nearly half the length of the cephalothorax. 
POST-LARVAL DEVELOPMENT. Unknown. 
HABITAT. The two species known live each in a species of the genera Metopa 
Boeck and Stenothoé Dana. Hitherto found only in Norway and at the western coast of 
Greenland. 
REMARKS. My material of the Amphipod family of Stenothoide, which contains 
a great multitude of species, being somewhat limited, because I have only seen a few spe- 
cimens of most Greenlandish and Danish species, it may be expected that researches made 
in a large material will lead to the discovery of a number of new species of this inter- 
esting genus. 
Conspectus of the Species. 
The basal joint of the mavxillipeds in both sexes conspicuously longer than that of 
the maxille. The female without median frontal process. The male elongated. 
1. St. egregius 0. Sp. 
The basal joint of the maxillipeds in both sexes almost shorter than that of the 
maxilla. The female has a median frontal process. The male is short and broad. 
2. St. Sarsvi n. sp. 
|. Stenothocheres egregius n. sp. 
(Pl. I, fig. 1 a—11.) 
FEMALE. A very large specimen is “63 mm. long. The specimen represented 
(fig. 1a and fig. 1b) is ab. ‘59 mm. long and -46 mm. broad. The body as a rule a little 
longer than broad, apart from the abdomen evenly rounded; seen laterally (fig. 1 b), the ventral 
side is rather flat, the back strongly convex. No median frontal process between the bases 
of the antennule. The antennz distinctly jointed; the terminal joint furnished with two short 
sete of unequal length. The basal joint of the maxillipeds conspicuously longer than that of the 
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