Among the Pachyteriae of the Brussels Museum, kindly sent to me for examination by Mr. A. Preudhomme de Borre, was a specimen from Java (coll. Du Bus) under the name Pachyteria bicolor Parry. As it, however, did not quite agree with Parry’s very short description and the accompanying figure ¹), which inter alia do not agree in every respect with each other, I forwarded a detailed description of it to Mr. Alex. Fry, in London, the present owner of Parry’s type specimen, asking him to compare my description carefully with the type. This he did most courteously, and he came to the conclusion that the Brussels specimen, although it must be wonderfully like the bicolor, differs in some respects essentially and cannot be the same species, nor do the differences appear to be sexual. I therefore regard the specimen of the Brussels Museum as belonging to a distinct species, and after having described it under the name Pachyteria Borrei, I will reproduce Mr. Fry’s detailed description of the type specimen of Pachyteria bicolor Parry.