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is of the opinion that each of the genital apertures is provided with a separate frame, of 
which he presents a drawing (fig. 5e), but the anterior part of these frames is scarcely 
correct in drawing, as it is not likely to reach up to the »pore de fécondation« (orifice of 
the receptaculum seminis) which — we see — here for the first time is proved to exist 
in an animal of this family. Neither has he seen the median part of the firm chitine of 
the genital area which unites the two »frames«, but it must be pointed out, that without 
a special dissection — in which, moreover, a certain amount of practice is desirable — 
these details are difficult to discover. The whole description of the two small specimens 
is considerably better than the above-mentioned joint work on this family by the same 
author and Prof. A. Giard. 
