104 j\Ir. II. Scott on 



feeding-habit in the family Blepharocerid;i?. Kellogg (op. cit. 

 \\)0'.\ and 1907) describes the ? ? of B/c/>harocera lenuipes, 

 AValker [capitata, Loew), as feeding on tiny Chironomid 

 midges, winch they ca[)tnred on the wing, lacerated with their 

 mandil)lcs, and from which they then absorbed the body- 

 jniccs ; but tlic J J, whidi have no mandibles, were absent 

 from the fceding-gronnd, and probably have a totally 

 ditl'erent foot-habit. On the other hand^ llctschko {op. cit.) 

 in Corsica observed both sexes of Apistomyia clegans, 

 Bigot, feeding together on nectar, thereby confirming 

 the earlier observations of Sclinnse, part of which Kellogg 

 [op. cit. 1907, p. 5) doubted. The Apistomyia were seen on 

 a number of occasions, at all hours of the day, feeding 

 almost exclusively on the flowers of a Composite {Heli- 

 chrysum microphy/lum) ; thoiigh present in numbers, the 

 majority appear to have been ? $ . None were ever 

 observed to capture other insects, and no insects which they 

 could have captured were present on the flowers. Apisto- 

 myia belongs to a different division of the family to either 

 Blepharocera or Paltustoma, but like them it shows great 

 dissimilarity between the S and ? mouth-parts, only the 

 9 possessing mandibles, and there being other diflerenees. 

 Yet Hetschko found both sexes exhibiting the nectar-feeding 

 habit at the same time. 



J Genital Armature. — This is shown in PI. X. fig. 13, 

 viewed as a transparency from the ventral side. The terminal 

 dorsal segment of the body is rather deeply and widely 

 sinuate-emarginate in the middle behind, and its hind angles 

 are rounded ; at its sides and hind angles it bears long setae 

 directed outwards ; at its sides, too, it is strongly defiexed, 

 and the deflexed portions bear long setae directed inwards 

 towards the middle line. Yentrally are articulated the two 

 stout claspers, each bent inwards somewhat towards the 

 apex, which is blunt, and each bearing on its outer side a 

 short projection ending in a stout spine, somewhat recalling 

 a very small branch of an antler. Between the bases of the 

 claspers projects a small subtriangular plate with rounded 

 apex, just exceeding in length the base of the sinuation of 

 the dorsal plate. These parts all agree closely with those 

 of \yilliston's co-type. 



Legs, Tarsi. — The legs are thickly covered with blackish 

 setse. The hind tibiai have the single apical spur character- 

 istic of the genus. The tarsi (PI. X. fig. 14) have a 

 group of stout black spines underneath the basal part of 

 the terminal joint ; each of the claivs has a moderately 

 long stout process on its ventral side near the base. The 



