Stratiomyia occidentis sp. nov. Related to S. maculosa, the male having pilose eyes and a black face. It differs from S. maculosa most prominently in lacking oblique yellow marks on the fourth segment, and the lateral marks are narrow, almost linear. The lateral appendages of the male genitalia are very much broadened at tip, about twice as broad us in middle, whereas those of S. maculosa are scarcely broadened at tip. The hair on the eyes is much shorter than that of maculosa and white (not

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... lowish). The hair on face and thorax is also whiter than in maculosa; the scutellum is about half yellow, the marks on the fourth segment do not approach each other, the fifth segment shows but one spot, much broadened behind; the venter is largely yellow, but black on base or lateral parts of segments; femora black, rest of leg tawny. Length 15 mm. The type is from Stockton, Utah, June (Spaulding), two other smaller males from Webber Lake, Calif., July (Osten Sacken.) Odontomyia tumida sp. nov. In general similar to 0. arcuata in coloration and structure; the head yellow, with black mark over ocelli, and a curved dark mark each side in front from the eye, basal joint of antenn pale; thorax rather more silvery pubescent above than in arcuata, pleura and sternum yellow, latter black in middle, legs wholly pale, the tarsi hardly darker near tip, scutellum yellow with short yellow spines; abdomen yellow above with four black bands, narrower than in arcuatus, and none of them reaching to the margin. It is distinguished from arcuatus by the profile of the face, which is fully twice as much swollen out beneath antennae as in arcuatus, proiecting forward the width, of the eye;