370 _ DIPTERA. 
4. Calobata manifesta, sp.n., @. (Tab. IX. fig. 20, wing.) 
Black, front dark red ; first joint of the fore tarsi white ; wings subhyaline, the costa, a cross-band, and the 
apex brown. 
Length 10 millim. 
Allied to ©. erythrocephala and QO. diversa, and likewise of a black coloration. The front is dark red, with 
the lateral borders black: face and occiput shining bluish-black, the face with white reflections; antenne 
and the thick proboscis black. Pleure steel-blue. Legs black; the front coxs with a whitish reflection, 
the front tibia at the tip on the inner side and the first joint of the tarsi of the same pair of legs white. 
Halteres black. Wings greyish hyaline; the costa brown; behind the middle is a brown cross-band, 
reaching to the posterior cross-vein ; the tip of the wings broadly brown ; auxiliary cell elongate ; first 
vein ending above the small cross-vein ; second vein nearly reaching the end of the costa; small cross- 
vein on the middle of the discal cell; posterior cross-vein perpendicular and straight; third basal cell 
forming a pointed triangle. 
Hab. Costa Rica, Volcan de Irazu 6000 feet (Rogers). 
A single female specimen. 
5. Calobata plectilis. (Tab. IX. fig. 21, ¢.) 
Calobata plectilis, Gigl.-Tos, Mem. R. Accad. Scienze di Torino, ser. 2, xlv. (sep.) p. 62°. 
Hab. Mexico1, Omilteme 8000 feet, and Sierra de las Aguas Escondidas, both in 
Guerrero (H. H. Smith). 
Two female specimens, agreeing with the description quoted, of which I here give a 
translation :— 
“ Female.—The whole body black, including the face, front, antennse, proboscis, and palpi; the face laterally 
along the eyes cinereous ; arista bare; the breast before the intermediate legs slightly cinereous ; legs 
black ; first and second joints of the front tarsi whitish ; a large portion in the middle of the intermediate 
and hind femora yellow. Wings yellowish, with yellow veins ; a rather indistinct yellow spot close to 
the costa behind the middle and a similar spot at the tip of the wing.—Length from the head to the tip 
of the wings 15 millim.” 
In the two specimens before me the first joint of the hind tarsi is somewhat whitish 
on the inner side; the markings on the wings are of a faint brownish-yellow colour, 
and the spot behind the middle is extended downwards to an angulate cross-band ; the 
first vein reaches the costa above the small cross-vein, which is placed just before the 
middle of the discal cell; the terminal section of the fourth vein is a little longer than 
the distance between the end of the second and that of the third vein ; the third basal 
cell is triangular and pointed, but not elongate-—Length (from the head to the end of 
the abdomen, exclusive of the ovipositor) 9 millim. 
The male is unknown. 
6. Calobata russula, sp.n., ¢ @. (Tab. IX. fig. 22, 3.) 
Rufous; a spot on the front, the fore tibie, and the fourth and fifth segments of the abdomen black ; fore 
tarsi white ; middle and hind femora with brown rings; wings yellowish, with a cross-band and the tip 
brownish. 
Length 7:5 millim. 
Head, including the antennz and the proboscis, rufous; a black oval spot on the front immediately before the 
