Callimyia. 11 



bristles, the second a long bristle above, less strong in female; the 

 third joint is pubescent, the arista apparently bare. Frons and face 

 somewhat sunken between the eyes; jowls not descending. Epistoma 

 separated from the cheeks by a furrow, it is triangularly excised 

 at apex; there does not seem to be a free clypeus, but possibly the 

 incised apex answers to it. Cheeks and jowls bare. The mouth parts 

 are small and generally retracted; proboscis short; maxillary palpi 

 one-jointed, thread-like or a little flattened and larger in female 

 than in male. Thorax rectangular; of bristles there are uniserial 

 acrostichals which stop long before scutellum, and likewise uniserial 

 dorsocentrals, the two last of the latter long, the last placed some- 

 what outwards and specially long; in front the dorsocentral rows 

 curve outwards towards the humeri. There are two humeral bristles 

 and some small posthumeral, but these latter are fused with the 

 outwards curving dorsocentrals, so an exact number may not be 

 given; further there are a long præsutural bristle, a number of noto- 

 pleural bristles, a couple of intraalar, a supraalar and a postalar 

 bristle; otherwise thorax is bare. Scutellum has four strong marginal 

 bristles. Pleura bare except for a small prothoracic bristle. Abdomen 

 narrow and elongated, and it is somewhat compressed; the tergites 

 are by far the most developed, the sternites small; abdomen consists 

 in male of eight segments anterior to the hypopygium, at all events 

 on dorsal side; the first segment is short, the second to fifth of equal 

 length, the sixth curves down and forms the end of abdomen seen 

 from above; after the sixth follows downwards a small and rudimen- 

 tary seventh segment, then a somewhat small præhypopygial seg- 

 ment, and fmally the hypopygium; this latter is about globular or 

 more elongate, with a dorsal incision in which the anal opening 

 (tenth segment) Hes; at the apex of hypopygium are two smaller 

 or larger lamellæ or claws, and below it a pair of variously shaped 

 appendages. In the female the last segments are telescopically retrac- 

 tile. The legs are characteristic by the hind tibiæ and tarsi being 

 dilated in both sexes, and in female also the second to fourth joint 

 on the middle tarsus; on hind tarsi metatarsus is the longest joint. 

 The middle femora in male have a minute swelling or a little hook- 

 shaped knob below a little before apex. The femora, especially front 

 and hind femora, are a little fringed above and below; the middle 

 tibiæ have generally a dorsal bristle about the middle, and they 

 have two apical spurs; in the male the front femora have at base 

 on posteroventral side a peculiar strong bristle, bent strongly for- 



