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Shell: — Length: According to C. CLAUS, 1,5—1,8 mm. (no difference in this character
between male and female is given). The male investigated by me was 1,75 mm. long. Length:
height about 2,2 : 1; length : breadth about 2,3 : 1. Seen from the side it is of about
the type reproduced by C. CLAUS; the posterior margin of the shell is perhaps not quite so straight.
Seen from b e 1 o w it is of about the type described and reproduced above for C. Haddoni;
the anterior j)art perhaps does not
dominate quite so much over the
posterior part as in the figure of
the species mentioned. In other
respects it resembles C. Haddoni.
First antenna: — This
is of the same type as in C. Haddoni
except that the e-bristle is
furnish-ed with only about 30—32 spines
in each row; tliere are sparse short
secondary bristles on the anterior
side of this bristle.
Second antenna: —
This is of quite the same type as is
described and reproduced above for
C. Haddoni; the clasping organ on
the left endopodite was perhaps
somewhat more rounded proximally
in the specimen investigated by
me than in my hg. 5 of the species
just mentioned.
Man di ble: — Of the
same type as in C. Haddoni, but
the number of teeth on the distal tooth-list is somewhat less (about the same as in my tig. 17
of C. symmetrica). The proximal tooth-list varies somewhat in type.
The maxilla, the f i f t h, s i x t h and seventh li mb s, the fure a, the
rod-shaped organ and the upper 1 i p are of the same type as in C. Haddoni.
The penis on the specimen investigated by me agreed well with the one reproduced
by C. Claus, 1891 a, pl. V, tig. 4 (consequently also with this organ in C. Haddoni; the copulatory
appendage is, however, not toothed at the edge as in my tig. 6 of the species in question).
Female: —
Shell: — Length: The specimens investigated by me measured 1,6—1,95 mm.
Length : height about 2,2 : 1; length : breadth about 2,5 : 1. Seen from the side
(tig. 1) it is of the same type as that of the male, but the shoulder vault is somewhat less
developed. Seen fro m b e 1 o w (tig. 2) it is about the same as in C. Haddoni. In other
respects it is like that of the male.
Fig. CXXVIII. — Conclwecia bispinosa C. Claus.— 1. Shell seen from
the side, ?; 50 X. 2. Shell seen from below, $; 42 X. 3. Pad on the
b-bristle of the first antenna, <J; 1200 X. 4. Distal part of the
rod-shaped organ and the first antenna, $; 187 X. (Fig. 3 from a
specimen from station 6 b, the other figures are from specimens from
station 20 b.)
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