374: DIPTERA. 
doubt about the determination. As his description is inserted quite incidentally in a 
work which perhaps is not easily accessible, I give here a translation :— 
“Brownish-yellow. Front tarsi whitish-sericeous, front tibie blackish ; the middle and hind femora with a | 
clear ring at the base and another on the apical third; the wings are yellowish-hyaline ; the tip and two 
cross-bands, the second of which is very broad, are brown; the anal cell is extended to near the hind 
border and much (22 times) longer than the anal vein. The surface of the wings shows a splendid 
- iridescéncé.” 
This species is a very pretty one. ‘The antenne are rather short, the third joint 
rounded ; the arista nearly or quite bare. The first joint of the middle and hind tarsi 
is yellow, and often as clear as the front tarsi. The abdomen is of a coppery-red 
colour; the male genitalia have beneath the penultimate segment a large furcate 
organ, of which the two branches are rather long, beset with short bristly hairs and 
ending in curved filiform appendages. The brown cross-bands of the wings are less 
obscure towards the hind margin; the median band does not reach the cross-veins; 
small cross-vein distinctly beyond the end of the first vein and on the middle of the 
discal cell; end of the second vein a little beyond the posterior cross-vein ; first 
posterior cell attenuated, but not closed at the tip of the wing. 
The specimens vary greatly in size: the largest is 10°5 millim. in length; one of the 
males measures no more than 6:6 millim. 
The synonymy of Grallomyia caloptera, Bigot, is evident; the name C. ichnewmonea, 
Brauer, is a year older. 
14. Calobata munda, sp.n., ¢. (Tab. IX. fig. 29, wing.) 
Rufous ; abdomen bluish-black above; legs blackish ; front tarsi white; middle and hind legs with flattened 
tibiee and oblique white rings on the femora; wings with three blackish cross-bands, the intermediate 
band enlarged and covering the posterior cross-vein. 
Length 7°5 millim. 
Closely resembling C. grata (no. &), but distinguished from it by the blackish legs, the flattened tibiee, and a 
different neuration. The head has not deep grooves as in C. grata, and is rufous, opaque, with a black 
dot in front before the ocelli; the occiput has not the bright brown sides. Antenne brownish-rufous ; 
third joint elliptical; arista bare. Thorax rufous; pleure whitish-grey, with a blue reflection ; meta- 
notum steel-blue. Abdomen black above, with the first and the two apical segments steel-blue, the 
underside rufous; male genitalia moderately prominent, the furcate organ black and rather short. The 
front legs have the coxe and femora reddish-brown, the tibie black, and the tarsi entirely white. The 
intermediate and hind legs have the femora black, brownish-rufous near the tip, and with two whitish 
rings—one at the base, the other beyond the middle, this latter oblique; the tibie black, flattened, 
slightly enlarged, but attenuated at the base and tip, and with a longitudinal groove on each side; the 
tarsi yellowish, with the second and following joints somewhat infuscated. Wings hyaline, with three 
blackish cross-bands ; the median band large, not reaching the small cross-vein, but covering the posterior 
cross-vein ; small cross-vein beyond the end of the first vein and on the middle of the discal cell; end of 
the second vein nearly above the posterior cross-vein ; first posterior cell attenuated, but not closed; third 
basal cell elongate, and pointed at a short distance from the hind border. 
Hab. Mexico, Dos Arroyos in Guerrero 1000 feet (7. H. Smith). 
This species seems to be allied to C. platycnema, Loew (Dipt. Amer. Sept., Centur. 
vii. no. 86), from Colombia, but differs from it in the colour of the front legs, the 
tibiee being black and the tarsi wholly white. 
