288 Phoridae. 



at the hind margins of the segments and only slightly longer on sixth 

 segment. Hypopygium of medium size, as long as high, with two 

 or three small bristly hairs on each side below, one above the other; 

 ventral plate yellowish, rather short; anal tube somewhat large, 

 clear yellow. Legs yellow, hind femora very slightly darkened at 

 apex ; front metatarsus dilated, as wide as the end of tibia, the follow- 

 ing joints slightly stout, but the last distinctly more dilated and 

 also longer than the fourth joint; the hairs below hind femora short, 

 a little dense at base; bristles on hind tibiæ fme and dehcate. Wings 

 slightly brownish tinged, veins brown; costa reaching to or near to 

 the middle, costal divisions nearly as 4 — 2 — 1 ; costal cilia moderately 

 long; angle at fork ordinary; fourth vein evenly curved, slightly 

 recurved at apex, Halteres black, the peduncle yellowish. 



Female. Similar; the front tarsi shaped in the same way, the 

 middle joints fully as stout; wings with the fork a little longer, but 

 the angle the same. 



Length 1,5 — 1,7 mm. 



This species will be known from the preceding by the shape of 

 the front tarsi; the dilated fifth joint is, however, no very striking 

 character, but it is besides distinguished by the longer costa, and in 

 the male by the yellow, anal tube. 



A. dactylata is rare in Denmark; Ermelund, Dyrehaven, Lyngby 

 Mose and in Jutland at Ry (the author), in all five males and four 

 females; my dates are "/s — ^9 in 1918 to 1920. 



Geographical distribution: — Besides in Denmark the species 

 also occurs in Holland, as Pater Schmitz has communicated to me 

 that Professor de Meijere has taken it there. 



47. A. Dahli Beck. 



1901. Beck. Abhandl. zool. bot. Geseli. Wien, I 67, 63, Taf. III, Fig. 57 

 (Phora). — 1910. Kertész, Cat. Dipt. VII, 406. — 1914. Brues, Bull. Wisc. 

 Nat. Hist. Soc. XII, 116. — Phora humilis Wood, 1909. Ent. Month. Mag. 2, 

 XX, 114, 143. - A. humilis 1914. Brues, 1. c. 121. 



Male. Frons a little broader than high, black, dull; inner bristle 

 of lower row not or slightly below the outer and nearer to it than to 

 the upper supraantennal; supraantennal bristles unequal, the upper 

 strong, the lower smaller to about half the size of the upper; the upper 

 more approximate than the inner bristles of the middle row, the lower 

 a little more approximate. Antennæ somewhat large, black, arista 

 short-pubescent. Palpi yellow or dirty yellowish, with well developed 



