Revision of the Bombylid Geuus Aphoebantas. 261 



not dilated below, about three fourths as long as the last two ab- 

 dominal segments united. 



Aphoebaxtus desertus n. sp. — Female. Black. Front and face 

 sparse \ r ellowish tomentose and erect black pilose. Proboscis not 

 projecting beyond the oral margin. Antenna? with the first two 

 joints sparse black pilose; stvliform portion of the third joint once 

 and a half as long as the thickened basal part. Occiput whitish 

 tomentose. Thorax yellow tomentose and sparse black pilose, that 

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

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

 tellum yellowish tomentose, the bristles reddish. Abdomen with 

 alternate crossbands of black and whitish tomentum, the dorsum 

 with scattered quite long black pile, the sides with denser white 

 pile; venter white tomentose and pilose. Legs with the femora 

 whitish tomentose, the bristles reddish; hind femora each with 

 from one to five bristles and numerous long hairs below, middle 

 femora each with four or five bristles below and with many long 

 hairs behind. Knob of halteres light \-ellow, the stalk brown. 

 Wings hyaline, apex of the subcostal cell 3'ellowish. Length 9 to 10 

 mm. San Diego count\-, Cal. Two females, in May. 



Aphoebaxtus capax n. sp. — Female. Black, tibia? and base of 

 tarsi yellowish. Front sparse \-ellow tomentose, black and reddish 

 pilose, the latter situated next the antenna? ; face destitute of to- 

 mentum, golden-3'ellow pilose. Proboscis not projecting be\-ond the 

 oral margin. Antenna? with first two joints sparse black pilo.se; 

 stvliform portion of the third joint equal in length to the thickened 

 basal part. Occiput yellowish tomentose. Thorax yellow tomen- 

 tose and sparse 3-ellowish pilose, the bristles reddish ; pleura gray 

 pollinose and white tomentose, the pile A^ellowish and white. Scu- 

 tellum 3^ellowish-white tomentose, the bristles also yellowish white. 

 Abdomen with alternate crossbands of yellowish-white and black 

 tomentum, the dorsum almost destitute of erect pile, the sides very 

 sparse pilose except on the first two segments where it is abundant, 

 white; venter white tomentose and pilose. Legs yellowish-white 

 tomentose, the bristles reddish ; hind femora each with four bristles 

 but no long hairs below, middle femora each with two bristles in 

 front and a fringe of rather long pile behind. Knob of halteres 

 3'ellowish-white, the stalk brown. Wings hyaline, apex of the sub- 

 costal cell 3' ell o wish. 



Male differs from the female in having the pile of the front 

 golden-\ r ellow, of the first two antennal joints reddish, face sparse 

 3 r ellowish tomentose, pile of lower part of occiput white, tomentose 

 crossbands of abdomen \-ellow and whitish, dorsum of abdomen 



