Revision of the Bombylid Genus Aphoebantus. 259 



equal in length to the last two abdominal segments, gray pollinose 

 except a large spot each side, the under surface white tomentose. 



Length 8 to 9 mm. San Diego and Kern counties, Cal. A single 

 male and female, in May and June. 



Aphoebantus mixtus n. sp. — Female. Black. Front gray pol- 

 linose, sparse whitish tomentose and black pilose ; face destitute of 

 t omentum, gray pollinose and white pilose. Proboscis not project- 

 ing beyond the oral margin. Antenna? with first two joints sparse 

 white pilose ; styliform portion of the third joint equal in length to 

 the thickened basal part. Occiput white tomentose. Thorax yellow 

 tomentose and sparse black pilose, that on the front end yellowish, 

 bristles reddish and black ; pleura gray pollinose, the pile and to- 

 mentum white. Scutellum opaque, yellowish tomentose, the bristles 

 reddish. Abdomen black, white and light yellow tomentose, the 

 white forming a crossband on the hind end of segments 2 to 5 ; the 

 black forming crossbands, interrupted in the middle, on segments 2 

 and 3, being intermixed with light yellow tomentum which is most 

 abundant on the posterior half of the body, the last two segments 

 being destitute of black tomentum ; pile of dorsum very short and 

 sparse, that along the sides longer but very sparse except on the 

 first segment where it is quite dense, white ; venter white tomentose 

 and pilose. Legs white tomentose, the bristles yellowish ; hind 

 femora with two small bristles but no long hairs below, middle 

 femora destitute of bristles and of long hairs. Knob of halteres 

 whitish, the stalk yellow. Wings hyaline, apex of subcostal cell 

 yellowish. 



Length 6 mm. San Bernardino county, Cal. A single female, 

 in July. 



Aphoebantus interruptus n. sp. — Female. Black, the tibiae 

 and base of tarsi yellowish. Front and face gray pollinose, desti- 

 tute of tomentum ; pile of front black, reddish and white, the latter 

 situated nearest the antennae; pile of face white. Proboscis never 

 projecting more than one fourth the length of its labellae beyond the 

 oral margin. Antennae with first two joints gray pollinose, pile 

 above yellowish, that below white ; styliform portion of the third 

 joint equal in length to the thickened basal part. Occiput gray pol- 

 linose, sparse yellowish-white pilose, next the eyes below white 

 tomentose. Thorax yellow tomentose and sparse black pilose, that 

 on the front end yellowish, bristles reddish and black; pleura gray 

 pollinose and white tomentose, the pile yellowish and white. Scu- 

 tellum rounded behind, polished black, the base and a median stripe 

 reaching the apex yellow tomentose, the bristles black. Abdomen 

 with first segment and base of the second white tomentose, the 



