* 



PIPUNCULUS. 87 



penultimate section of the fourth vein at least twice the length of 

 the antepenultimate section 3. 



3. Legs yellow 4. 



Femora, at least, in large part black ; third joint of the antennse with 



a bristle-like projection below subopacus, Loew. 



4. Third joint of the antennse with a bristle-like projection below . . aculeatus, sp. n. 

 Third joint of the antennse more or less acute below, but not 



drawn out into a bristle-like projection 5. 



5. Abdomen shining black xanthopodus, sp. n. 



Abdomen opaque coffee-brown, with interrupted, pollinose cross- 



bands flavicornis, sp. n. 



L Pipunculus elegantulus, sp. n., <s . 



Frontal triangle and facc black, silvery-pubescent. Antennse black » tbird joint silvery-pubescent, obtusely 

 pointed below ; arista black, thickened at its base. Dorsum of thorax and scutellum deep brown, mode- 

 rately shining, distinctly pilose ; pleura and metanotum black, grey-pollinose. Abdomen deep black, 

 shining, whitish-pilose ; first segment and the posterior angles of tbe following segments opacpie grey- 

 pollinose ; hypopygium large, black, moderately sbining, reddish below, thinly pollinose. Legs yellow ; 

 all the femora more or less broadly blackish in the middle ; distal joints of all the tarsi blackish ; femora 

 stout, on their under distal side with two rows of short black spines. Wings nearly hyaline ; stigma 

 yellowisb ; anterior eross-vein nearly opposite the tip of the auxiliary vein ; last section of tbe fourth 

 vein angulated, and with a stump ; penultimate section of tbe fourth vein more than twice the length of 

 the antepenultimate section. 



Lengtb 4i millim. 



Hab. Mexico, Chilpancingo in Guerrero 4600 feet (H. H. Smith). 



One specimen. This species is nearest allied to P. cingulatus, Loew, but it lacks the 

 cineraceous bands of the abdominal segments and has the legs of a lighter colour. 



2. Pipunculus flavitarsis, sp. n., <$ . 



Faee and frontal triangle black, silvery-pubescent. Antennae black j third joint in large part yellow, acute, 

 but not produced below ; arista black. Tborax black ; dorsum and scutellum brownish-pollinose ; 

 pleura? grey-pollinose. Abdomen blackisb-brown, subopaque ; tbe first segment and the hind angles of 

 the following segments opaque grey. Legs biack ; extreme tip of tbe femora, tibias for the greater part, 

 and the tarsi, save their tip, yellow ; femora not markedly thickened nor with spines below. Wings 

 nearly hyaline ; stigma yellow ; anterior cross-vein situated beyond tbe tip of the auxiliary vein ; last 

 section of the fourth vein sinuous, without stump ; penultimate section of the fourth vein scarcely twice 

 the length of the antepenultimate section. 



Length 4 millim. 



Hab. Mexico, Chilpancingo in Guerrero 4600 feet (H. H. Smith). 

 One specimen. 



3. Pipunculus xanthopodus, sp. n., s . 



Tbe small frontal triangle and the face black, densely silvery-pubescent. Antennae : basal joints black, or 

 blackish ; third joint light yellow, in shape acutely pointed below ; arista black, thickened at its base. 

 Dorsura of thorax brown ; pleurse and mctanotum silvery-grey-pollinose. Abdomen shining black, the 



