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Sy no ny my
Asterope Grimaldi n. sp. var. vicina n. var.
Cylindroleberis oblonga. G. W. MÜLLER, 1894, p. 219, pl. 4, figs. 14—18, 39, 41, 44.
49—55, pl. 5, figs. 1, 4, 5, 13. 14. 23, 33. 41—44, pl. 8. fig. 4.
Asterope Mariae (part.), G. W. MÜLLER, 1912, p. 45.
Description: — F e male: —
Shell: — Lengtli, 1,54—2 mm. (the type-specimen, from Villefranche-sur-mer.
measured 1,93 mm.). It agrees very closely with the type species except with regard to the
fine pores on the part between the spine-bearing list and the posterior margin of the shell; these
are considerably fewer than in the type species, about four to six near each broad pore, fig. 1.
First antenna: — The f-bristle lias five, the c- and g-bristles six sensorial filaments.
M audible: — The second protopodite joint has dorsally only the two distal
bristles that are characteristic of the Asteropidae; on the other hand there are no bristles at all
at the middle of the dorsal side. En do pod i te: Second joint: The female examined had
the following number of cleaning bristles: The right mandible had six bristles in a distinct
lower row, one bristle close to the main bristle b and one obliquely distally inside the
last-mentioned one. The left mandible had six bristles in a distinct lower row. one between the
main bristles b and c and one somewhat inside the main bristle b.
The s i X t h 1 i m b has 27—28 posterior ventral bristles.
In other respects it agrees with the type species.
Male: — See G. W. Müller loc. eit.
Remarks: — In order to make a verificatory examination I applied to Professor
G. W. Müller for a mature female of the species from the Bay of Naples, which he has dealt
with on p. 219 of his large Ostracod monograph, 1894, under the name of Cylindr oleberis oblonga.
Professor Müller kindly sent me a Naples specimen of this form. Although unfortunately this
specimen was not mature—it was a male in the last larval stage — yet my synonymization given
above, the result of a eareful examination of this specimen, may be considered, if not as
abso-lutely certain, at least as being fairly certain. The only character in which the Naples specimen
difiered from the form investigated by me was that its right mandible had three, not two, dwarf
bristles on the backward pointing process on the second protopodite joint. As all the other
species in this group of forms — A. Grimaldi, norvegica and oculata — have two dwarf bristles
on this process it does not seem impossible that we are concerned here with an accidentai variation
At any rate it did not seem to me that this character ouglit to prevent this synonymization.
It follows from this synonymization that G. W. MÜLLER’s description and figures of this
species are in a number <>f respects — even in the characters of the genus — somewhat incorrect.
The mistakes will be seen by a comparison with the information I have given above.
G. W. Müller in his Work of 1912, p. 45 includes a species Asterope Mariae (W. BaIRD).
The following forms are synonymized with it: Cypridina Mariae, \V. Baird, 1850 c, Cypridina
oblonga, E. Grlbe, 1859, Cylindr oleberis Mariae, G. S. Brady, 1808 b, Copechaete elongata + ?
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