Nearly all insects are in some degree beset with hair-like structures of varying length and stiffness and density and frequently of varing color. So much is familiar to every entomologist, even to those who have never examined an insect with a magnification higher than that of a hand lens.

In January of 1924 (Can. Ent., vol. LVI, No. I, p. 2.), I created the genus Hoppingiana to receive a species of Melyrid that did not fit into any of the previous generic definitions. Of late considerable discussion has arisen over the possibility that Hoppingiana brevilabris Blais. is the true Dasytes hudsonicus of LeConte. My male specimen of hudsonicus Lec. was received from Wickham and was collected in the alpine regions of Colorado.

The bees now described are of interest for different reasons. The genus Hesperapis, originally described from New Mexico, has been found to be widely distributed over the southwestern States, with eighteen species, two of which come from Lower California.

Male. Eyes deep black-brown. Head black with the pits of the antennae and a small area posterior to the mid-ocellus pale yellowish. Pronotum black; mesonotum black with slight brownish shading along lateral edges posteriorly; the membranous area between base of wing and fore coxa pale yellowish, shaded with light brown, and containing a blackish streak; metanotum black with slight yellowish tinges in median area; pleura and sternum black with the less heavily chitinized portions, especially around bases of legs, pale yellowish.

During the past few years it has been possible to collect leafhoppers in many parts of Utah. Because of the abundance of many of the species and the fact that so many feed upon range forage plants, it seems to the writer that the injury due to range leafhoppers in the Rocky Mountain West has been greatly underestimated.