68 DIPTEEA. 



bifurcation of the third vein. Two specimens— the one nearly 40 millim., the other about 28 millim. long, 

 both without counting the terminal segments forming the ovipositor. 



Hab. Mexico (Sumichrast *) ; Nicaragua, Chontales (Janson) ; Panama, Bugaba 

 (Champion). 



This species seems to be common ; there is a specimen in the British Museum, and 

 another in the Berlin Museum (under a collection name), both from Mexico. Bellardi's 

 A. picta, which I have compared, is the same species. Professor Bellardi thought 

 that the white abdominal spots mentioned in Wiedemann's description were rubbed 

 off in his specimen (he says, " maculis albidis nullis, quia detritum ") ; but they do not 

 exist even in well-preserved specimens. 



A. picta, Wiedem., is known in the male sex only; besides the white abdominal spots, 

 it has a more whitish thorax. 



I have little doubt that the male of A. championi has the antennae like those of 

 A. seticornisy that is, with a long setiform style. 



I take pleasure in dedicating this species to Mr. George C. Champion. 



2. Acanthomera ? 



Hab. Guatemala, Panima in Vera Paz (Champion). 



A single male, about 27 millim. long; third antennal joint disciform, with a bristle 

 at the tip one and a half times the length of the joint ; sides of the abdominal segments 

 flattened, with sharp edges, those of segments 3 and 4 with fringes of short hair ; the 

 hind femora have neither subfemoral nor terminal spines, the latter are replaced by a 

 blunt projection; palpi linear; face not projecting. Thorax rich brown, with paler 

 stripes, with a brownish, rather dense pubescence ; abdomen uniformly ferruginous, 

 the short hairy lateral fringes on segments 3 and 4 of the same colour; legs rather 

 uniformly reddish chestnut-brown ; wings like those of A. championi in colour, that is 

 brownish with paler spaces on the cross-veins and bifurcations. 



1 cannot identify this male with any of the existing descriptions, nevertheless I do 

 not describe it as a new species, because the discrepancies consist principally in the 

 colouring, which may be variable. The specimen may perhaps be the male of some of 

 the species in the vicinity of A. bellardii or A. fulvida, Bigot. 



Fam. MIDAID-U. 



LEPTOMIDAS. 



Leptomydas, Gerstaecker, Stett. ent. Zeit. 1868, p. 81. 



l. Leptomidas sponsor, sp. n., $ . 



Thorax brownish-red, with yellow stripes ; pleurae nearly black ; abdomen brown, with well-marked yellow 



cross-bands on the margins of the segments ; legs pale reddish ; wings yellowish ; proboscis black. 

 Length 15 millim. 



Hab. Guatemala, San Geronimo (Champion). 



