NEW SAWFLIES IN THE COLLECTIONS OF THE UNITED STATES NATIONAL MUSELT^I. By S. A. RoHWER, Bureau of Entomology, United States Department of Agriculture, Washington, D. C. It is believed that the following species are congeneric with the genotypes as defined in the two papers by tlie author deaUng with the subject of genotypes. ^ In the maldng of descriptions a Carl Zeiss binocular and Carl Zeiss hand lens were used. The figures are from camera lucida sketches. The following new species do not exhaust the collections of the United States National Museum, and some other papers dealing with genera not treated in this paper wiU be submitted later. While some of the descriptions are appar-ently brief, they will, it is beheved, suffice to determine the species in question ^^dth certainty. Certain new species in this paper have been described by comparison with an old species. If the reader has a species, differing from the old species in characters not mentioned in the comparison between the old and new species, it may be con-sidered different from the new species. To redescribe characters common to many species is of no value in a description. This paper is a contribution from the Division of Forest Insects of the Bureau of Entomology of the United States Department of Agriculture. Genus ACANTHOLYDA Costa. ACANTHOLYDA (ACANTHOLYDA) PINI, new species. Related to atripes (Cresson), but may be distinguished by the paler legs, the black and pale abdomen, and non-yellowish wings. Female. — Length 13 mm. Head with rather large, separate punctures; lateral supraclypeal area smooth, shining impunctate; clypeus" sliining, with widely separate punctures, the anterior margin not quite straight; antennee 35-jointed, the apical joints small, third joint longer than four, but not as long as four plus five; middle fovea represented only by a line; no ocellar basin; all the furrows of the head wanting; the middle area of the mesonotum with dis-1 The Genotypes of the Sawflies and Woodwasps, or the Superfamily Tenthredinoidea, Bull. Tech. Ser. No. 20, pt. 2, U. S. Dep. Agr., Bur. Ent., pp. i-vi and 69-109, March 4, 1911. Additions and corrections to "The Genotypes of the Sawflies and Woodwasps, or the Superfamily Tenthredinoidea," Ent. News, vol. 22, pp. 218-219, May, 1911. Proceedings U. S. National Museum, Vol. 41— No. 1866. 377
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