2IO The Ohio Naturalist. [Vol. XIV, No. 2, 



distributed as follows : the anterior half of the second segment a 

 rectangular patch on the anterior middle of the third segment 

 occupying two-thirds of the length and over half the width of 

 this segment, and a triangular patch on the anterior third of the 

 fourth segment ; the golden vestiture is longer and coarser than the 

 black and most dense on the fourth segment; the first segment 

 and all the sutures between segments are thinly gray pollinose, 

 giving the effect of gray bands. 



Description taken from the type male which was taken near 

 Phoenix, Arizona, Jtme ISth. 1902, by J. T. Lloyd. 



Myiolepta auricaudata Williston. According to Williston's 

 figure and description this is a dark colored species with short 

 golden tomentum on the thorax and on part of the abdomen, 

 especially the last segment. The two sexes are much alike, 

 but the tomentum of the female mesonotum is not so yellow. 

 Length 6-7 millimeters. Not having much material of the 

 species I reproduce Williston's description. 



"Male allied to M. strigilata Loew. Body clothed with 

 sparse white or yellow tomentum, this being longer, dense and 

 brassy on the terminal abdominal segments. Vertical triangle 

 long, opaque white in front; contiguity of the eyes short. Face 

 and front clothed with dense white pollen and some golden tomentum 

 on the frontal triangle; a broad shining, bare spot above the base 

 of the antennae; a transverse band on the face, extending down on 

 tubercle, and the cheeks also, bare and shining black. Tomentum 

 of the mesonotum golden-yellow, arranged in indistinct rows. 

 Second abdominal segment and the anterior part of the third 

 with the tomentum more sparse, apparently bare in certain lights; 

 on the posterior part of the third segment and on the fourth 

 the tomentum is longer, dense, bright brassy-yellow, concealing 

 the ground-color. Legs black; the base of the middle and hind 

 tibias, the middle metatarsi, and the hind metatarsi in part, 

 light yellow or white; femora thickened and with spinules below. 

 Wings subhyaline, clouded with brownish distally. " 



"Female: Front black, with sparse white tomentum and 

 two small, ov^al, white pollinose spots on each side; face shining 

 black, with an infra-antennal band and a narrow stripe from the 

 eye to the oral margin white-poUinose. Tomentum of the meso- 

 notum more white than in the male. " 



A female, a])]3arcntly of this species, before me was taken 

 in the Hauchuca mountains, Arizona. Wilhston studied two 

 specimens from the state of Guerrero and Morelos, Mexico. 



This species is generally darker than strigilata and according 

 to Williston, the antennas are darker and the facial spots are 

 lacking. 



