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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), hut the anterior part of these frames is scarcely 

 correct in drawing, as it is not likely to reach up to the »pore de fecondation« (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. 



