1899. 



219 



oral setae numerous ; autennoD short, with bare arista ; proboscis 

 rather short and thick ; palpi filiform ; scutellum with six bristles ; 

 abdomen depressed, sub-ovate, with small hypopygium, and setose apex ; 

 legs robust, spinose, with a small projecting tuft of bristles at the 

 base of the hind femora in the male. 



1 (3) Antennae, palpi and legs black I. fucorum, F\n. 



2(1) (3) Palpi red, with black apices, and tibiae rufoua 2. maritiina, Hal. 



3 (1) Antennse with basal joints rufous 3. muscaria, Ztt. 



Sp. 1. — F. FUCORUM, Fin. 



Head with frontal space wide, with dark brown stripe; face grej ; antennre 

 black, with arista nude and thickened for one-fourth of its length ; palpi black ; 

 proboscis black ; thorax dark bluish-grey, with three sub-defined black stripes and 

 numerous bristle spots ; shoulders and sides light grey ; abdomen dark grey, with 

 a sub-distinct median brown stripe, and lateral oblique black marks when viewed in 

 certain lights ; legs black, hind femora with small tufts of hair at the base in the 

 male. Length, 5 — 6 mm. Common on the sea coast. 



Sp. 2.— F. MARITIMA, Hal. 

 marina, Mcq. 

 fucorum, var. fS, Ztt. ? 



This species resembles the last in its general characters, and may perhaps be 

 only a light coloured variety of the same. It has the frontal space grey with the 

 front margin red ; the palpi are yellow, with black ends ; the abdomen is light grey, 

 with some slight dark reflections, but often quite immaculate, and the hinder edges 

 of the segments are said sometimes to have pale margins ; the legs have the tibise 

 testaceous. Length, 5 — 6 mm. Less common than F.fucorum, but found in the 

 same situations. 



Sp. 3. — F. MUSCARIA, Ztt. 



This well marked species is dark grey; the head has the forehead prominent ; 

 frontal space red, with black vertex ; antennae black, with basal joint rufous and 

 third joint twice as long as the second ; arista thickened nearly to the middle ; 

 epistome and face white, with a rufous tinge, the former rather prominent ; palpi 

 black ; thorax yellowish-brown, sub-striated ; abdomen dark grey, immaculate, 

 pubescent, with apex setose, narrow and lanceolate in the male, and ovato-lanceolate 

 in the female ; hypopygium indistinct ; wings grey; legs black ; femoral tuft in the 

 male small, but distinct. Length, 4 — 5 mm. 



I received both sexes of this little fly from the late Mr. Cooke, of Bowdon. I 

 do not think that it has been previously recorded as British. I overlooked it when 

 drawing up my late paper upon unrecorded British Diptera. 



Gen. XII.— SCATOPHAGA, Mgn. 



Scatonu/za, Flu., Ztt. 

 Scatina, p., Dsv. 

 Geii. ch. — Oblong, yellow-grey species, often thickly haired, with 



