886 JOURNAL, BOMBAY NATURAL HIST. SOCIETY, Vol. XXVIII. 
Argyraviceba nigrofemorata, Brun. I have a specimen from Matheran which 
agrees with Brunetti’s description, and is a Petrorossia. 
Argyramceha intermedia, Brun. I have examined the two specimens in the 
B. M. and they certainly belong to Petrorossia. 
Anthrax albofulva, Walk. The type of this species is headless, but the position 
of the origin of 2nd longitudinal vein marks it as a Petrorossia. I have 
specimens from Deesa which correspond so far as comparison is possible, 
with Walker’s type. The specimens described by Brunetti may not all 
belong to one species, as he mentions differences in the neuration. 
As regards the insect described by Brunetti as Aphcebantus ceylonicus (Dipt 
Brach. Vol. I, pp. 257-9), it is possibly identical with Walker’s Anthrax fervida. It 
is certainly not an Aphcebantus, as that genus has the 3rd antennal joint conical. 
I have a single specimen from Jubbulpore which corresponds with Brunetti’s 
description, and there are in the B. M. four specimens named by him. These all 
have the 3rd antennal joint onion-shaped. The pnefurca is even shorter than is 
typical Petrorossia, and the 3rd antennal joint bears a moderately long style, 
but no pencil of hairs. They are either an aberrant form of Petrorossia, or belong 
to a closely allied genus as yet undescribed. 
The following five species belong to genera hitherto unrecorded from Indian 
limits. I have not thought it necessary to give full generic descriptions, which 
may be found in Becker’s “ Genera Bombyliidarum.” The figures on the plate 
which accompanies this paper should enable students of Indian Diptera to 
recognise the genera Callistoma, Mariobezzia, and Heterotropus. As regards 
Eurycarenus, I have not included it in the plate, being somewhat doubtful 
whether the Indian specimens obtained by me are conspecific with African ones. 
Callistoma imperator, n. sp. 
(S Head ; frons below antennae about half as broad as head, narrowing at 
vertex to half this width ; black ; vertex with a rather narrow band of 
blackish bro^vn hairs, extending to the eye margins; frons and face thickly covered 
with white scales, and some longer whitish hairs ; antenae black, 1st and 2nd joints 
with some short black hairs, 3rd joint, excluding style, rather longer than the 1st 
and 2nd together, suddenly narrowed at about the middle, with a reddish style 
about half the length of the joint ; proboscis black, as long as the head and thorax 
combined ; mouth edge very narrowly testaceous ; occiput narrow, with a fringe 
of white hairs behind vertex, and some short scaly white hairs behind eyes. 
Thorax and scutellum black, covered with rather short yellowish grey hairs and 
some whitish scales on dorsum, below and on metapleurse with longer white 
hairs ; bristles near base of wings, on post-alar calli, posterior margin of dorsum, 
and scutellum, pale yellow. 
Abdomen black, long and rather narrow ; 1st segment rather thickly covered 
with greyish white hairs of moderate length ; 2nd and following segments with 
rather narrow basal bands of depressed greyish scales ; beyond these bands the 
hairs on the abdominal segments are short, black and depressed, and each segment 
except the first has a complete apical row of long yellowish bristly hairs ; the 
sides of the abdomen are thickly covered with moderately long greyish white 
hairs ; ventral segments 1 — 4 with the apical half of eaich segment covered with 
snow-white scales. 
Legs black ; femora and tibiae with greyish scales and rather short black 
spiniiles. 
Wings hyaline with a broad moderately dark band across the middle, its 
outer boimdary being at the apex of 1st longitudinal vein ; it includes the whole 
of discal cell, but is slightly narrowed towards the posterior margin bf wing ; 
base of wing as far as the humeral cross-vein, and the costal and subcostal 
cells, light brown ; alula smoke brown, with dark fringe, base of costa with 
