Agriotes limosus LeConte is the third North American species of Agriotes Eschscholtz for which the larva definitely is known. It is a woodland form and, therefore, of much less economic importance than the meadow-inhabiting species such as Agriotes mancus Say, the wheat wireworm, but it is of greater taxonomic significance since it lacks the characters that have been universally regarded as definitive of Agriotes larvae.

Two generic names are at present in use for those North American species of the Eupithecia group which show specialized frontal development. Nasusina Pears. (1908, Can. Ent., XL, 344) was proposed for the species originally included in the European genus Gymnocelis Mab. by Hulst, with inferior Hlst. designated as genotype. Seven species, all with supposedly “nose-like prominence of the front”, were originally listed in the genus; later the same author (1909, Proc. Ent. Soc. Wash., XI, 119; 1910, op. cit. XII, 138) added several species, including two new ones.

Female. Frontal profile slightly arcuate, gently sloped, less than equal in length to the facial profile. Clypeus slightly depressed. Vibrissae strong, cruciate, just above the oral margin. Facial ridges bristled on much less than one-half their length.

I have recently had occasion to examine a good deal of Californian material sent me for determination by those two excellent and enthusiastic collectors, Messrs. E. C. Johnston and William Bauer. In the course of identification work some apparently undescribed species were discovered; this present paper deals with these and with a few other things that have been accumulating in our collection.