1929] 
New Asilidoe from Mexico (Dipt era) 
45 
NEW ASILIDj® FROM MEXICO (DIPTERA). 
By S. W. Bromley 
In a shipment of Asilidae from Mexico received from Dr. 
Alfonse Dampf, the following new species were found. 
Plesiomma atrum n. sp. 
Length 21-23 mm. A deep black species with black wings. 
Male. Head black. Face brown poilinose. Mystax, beard, 
occipital bristles, antennal bristles and palpal hairs, black. 
Thorax deep brown with a slender double median line of 
black and black side spots. Vestiture black. Legs deep 
brown, femora and hind tibiae black. Knees lighter brown. 
Scutellum with 2 black marginal bristles. Wings black with- 
out irridescent reflections. Abdomen black. Genitalia black 
with black hairs. 
Female. Similar. 
Holotype, $ , no. 70 Coatepec (Ver.) ; allotype, $ , no. 69 
Coatepec (Ver.) paratype, $ , no. 28. Jaltipan, Istmo 
(Ver.) 
Deromyia bellardii n. sp. 
Length, 20-26 mm. A rather large reddish species with 
contrasting deep black lines on the thorax, the abdomen 
slightly coarctate in the male but not so in the female, and 
the abdomen in both sexes being uniformly deep reddish 
without black markings on the sides of the segments. 
Male. Mystax sparse, whitish. Face pale yellow poilinose. 
Antennae light reddish with black hairs. Palpi deep reddish 
brown with black hairs. Occipital bristles black. Thorax yel- 
lowish pollinoses with three deep black velvety lines on the 
mesonotum, the median line extending to the anterior mar- 
gin. Bristles of mesonotum black. A few black bristles in 
front of halteres. Coxal hairs pale yellowish. Legs reddish 
with black bristles. The upper surfaces of the femora and 
