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by J. LUBBOCK, 1860. G. 0. Sars was mistaken about the genus Halocypris; this writer included
in this genus not only the species placed in it by J. I). Dana but also Conchoecia
obtusata G. O. Sars and C. curta .). LUBBOCK [= C. Clausii (G. O. Sars)], two forms which do
not belong liere at all; cf. also G. O. Sars 18.90, p, 53. G. S. Bradv, 1880 again combined these
forms in one genus, Conchoecia, as he could not find in J. 1). Dana’s descriptions „any differences
sufficient, in my opinion, to form grounds of generic distinction“. Til. SCOTT, 1894, used the
generic name Halocypris for all the species of this group that were investigated bv him. The
difference between these two genera had, however, already been pretty well settled in C. Claus’s
works, 1874 a and b.
G. O. Sars, 1865, employed the same classification as J. I). Dana, but with the difference
that the latter investigator’s fa mily Halocypridae was denoted as the sub-order Myodocopa
and the sub-families Cypridininae and Halocyprinae as the families Cypridinidae and
Conchoc-ciadae; cf. p. 155 above. The H a 1 o c y p r i d s are denoted by all other writers as a family;
most of them use the name Halocypridae; cf. p. 555 above.
C. Claus, 1874 a, established a new genus Halocypria and G. W. MÜLLER 1890 a another.
Euconchoecia, but apart from this these writers did not undertake any further division of this
group in the works mentioned.
In C. Claus’s work of 1890 we find the following far-reaching classification of this group:
Sub-family
Conchoecinae
Conchoecia J. D. Dana.
Paraconchoecia n. g.
Conchoecetta n. g.
Conchoecilla n. g.
Conchoecissa n. g.
Pseudoconchoecia n. g.
Mileroconchoecia n. g.
Sub-family ( Halocypris J. D. Dana.
Halocyprinae \ Halocypria C. Claus.
This author uses the same classification in his following works (1891 a and 1894). His
example was followed by several investiga tors: G. S. Brady and A. M. Norman, 1896. G. S.
Brady, 1897, 1902 a, 1903, 1907, P. T. Cleve, 1900, 1905. A. M. Norman. 1905 and A. Scott.
1905. (The last-mentioned writer only partly, as he denotes Mikroconchoecia as Conchoecia).
G. W. Müller in his great Naples monograph, 1894. established a new genus of this
group, Archiconchoecia. This writer strongly opposed C. Claüs’s classification just mentioned.
On p. 223 of the work just referret! to he pointed out, first, that of the seven genera into which
C. CLAUS divided the genus Conchoecia no less than five were represented only by a single species
and, secondly, that the differences that exist between these genera are rather sliglit. With
regard to the classification of the sub-families Conchoecinae and Halocyprinae this author writes:
„Da beide Formen“ (Halocypris and Halocypria) „näher mit einander verwandt sind als mit
Euconchoecia oder Archiconchoecia. oder als diese unter einander, so würde sich als Consequenz
ergeben, daß wir für diese beiden durch je 1 Art vertretenen Gattungen je eine besondere Familie
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