200 ENTOMOLOGICAL SOCIETY ON THE GENERA OF THE CLEONYMID^E. By WILLIAM H. ASHMEAD. The Cleonymidce were first separated as a family by Francis Walker, in 1837? kilt ne did not properly define the family or really appreciate the structural characters that separate it from allied groups, since of the ten genera recognized by him as be longing to it, he included no less than five genera which belong to the Encyrtidas (Eupelminae and Encyrtinaa) , and one of these, Macroneura Walker, was based upon a male Eupelmus. Still later, or in 1856, Dr. Arnold Forster recognized this family under the name Cleonymoidce and defines five new genera, viz., Tricoryphus, Heydenia, Plutothrix, and Tetracampe. Forster correctly excluded from the family Stenocera Walker, Calosoter Walker, and Ericydnus Haliday, but included three other genera not included by Walker, namely, Trigonoderus Westw., Platynocheilus W'estw., and Merostenus Walk. Tricoryphus Forster is, as I have already shown, the wingless female of Cerocephalus Westw., and it, as well as Plutothrix, Tetracampe, and Platynocheilus, does not belong to the family, the first named belonging to the S-palangiina, the others to the Entedonidfe. The family Cleonymidce, as now restricted, may be readily distinguished by the large triangular mesepisternum, by having either the anterior or posterior femora much swollen and some times toothed, or both are swollen, with the hind femora dentate or toothed beneath ; if the legs are slender, the hind pair are very long, their coxae long, cylindrical, while the radius in the front wing is very short and the postmarginal is very long, ex tending to the apex of w r ing (Pelecinelld}. The family comes very close to the Encyrtidce, and especially to the subfamily Eupelmince, but the species may always be dis tinguished from any in this family by the absence of a movable or saltatorial middle tibial spur, the impressed mesopleura, the non-impressed mesonotum, and usually by the much longer marginal vein. I have recognized four subfamilies, but one of these, the Colo-trechnince, is, how r ever, provisional or supposititious, since it is based upon Thomson's genus Colotrechnus, which is unknown ,to me, and may or may not belong here. The following tables will aid the student in recognizing the subfamilies and genera :
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