440 Phoridae. 



veinlet also S-like, diverging at its end from the first, and ending 

 distinctly below the tip of the wing; third veinlet slightly undulated^ 

 ending very wide from the second; fourth faint, not reaching the end 

 of the wing. 



To this may be added some characters, mentioned by other 

 åuthors: Hypopygiiim small, blackish. Front tibiæ and tarsi some- 

 what thickened. Wings with the third vein fmely bristly, forked at 

 the end, the inner branch often weak, sometimes wanting. Length 

 about 2 mm. 



Female. Broad and flat, of oval shape, and of yellowish brown 

 or brownish colour, without wings or balteres. (Schmitz mentions 

 1. c. 1914, 543, that the "Fliigelrudiment" mentioned by Enderlein 

 for Dorni was visible also in an individual of hlattoides). Head and 

 antennæ yellow, arista very fmely pubescent; frons very broad. 

 Eyes small, bare. Abdomen with six normally chitinized segments; 

 the whole body fmely hairy, with the hairs in transverse rows. Legs 

 yellow, somewhat short and robust, especially the femora and the 

 front coxæ broad; tibiæ and tarsi with hair-seams. 



Length 1,5 mm. 



P. Lubbocki is rare in Denmark, only two specimens, both females, 

 have been taken, both by Schlick; one on ^Vs 1890 in Geel Skov under 

 a stone at Formica fusca, the other on ^V? 1907 at Frederikslund; 

 this latter specimen is recorded to have been taken at Lasius niger^ 

 but, as Schmitz remarks 1. c. 1915, 504, it no doubt has occurred 

 with Formica fusca. The species is known to be parasitic on ants, the 

 hosts are Formica fusca, picea and rufibarbis. Donisthorpe mentions 

 1. c. that he found some small, red pupæ in a nest of Formica picea 

 and from which he bred both sexes; the larva of the species thus 

 leaves the /'ormica-pupa before it pupates. 



Geographical distribution: — The species is known from Den- 

 mark, Britain, Holland and Luxembourg. The male was first taken 

 in England in 1877 and described by Verrall as P. Lubbocki; in 1890 

 the nexb specimen, a female, was taken in Denmark and described 

 by Meinert as Aenigmatias blattoides; already in 1898 Mik suggested 

 that these two species might be male and female of the same species, 

 and the same opinion was held by many other authors, but it was 

 only a suggestion; Donisthorpe was the first to give in 1914, 1. c, 

 what must be taken to be the proof of the two species as really being 

 male and female of the same species, he namely found and bred 

 both from quite similar pupæ in a nest of Formica picea. Later on a 



