In working up considerable material which the writer collected in the western United States certain new species of Hadronema have been recognized, with the result that a key is provided for the thirteen known species of which five are described as new. In 1918, Mr. E. H. Gibson published a key (Can. Ent., xl, pp. 81-84) to the species known to him, describing two new species. The writer examined these types in the U. S. National Museum during 1926 and found that Hadronema confraterna Gib. is in fact a good species of Lopidea, allied to Lopidea lepidii Kngt., but smaller and the left clasper somewhat differently shaped.