1899.] 223 



with dark tips ; face wliite ; frontalia with a black stripe, and orange forehead ; 

 antennae bhiek, with a black spot on each side at the root ; arista tomentose ; thorax 

 light grey, with four brown lines ; the lateral ones coalescing in front ; scutellum 

 grey, sometimes testaceous ; abdomen grey, with anal segments rufous ; wings with 

 transverse veins clouded ; legs yellow ; tarsi fuscous ; fore-legs nigrescent. Length, 

 4 mm. I have not seen this fly, but Mr. Verrall places it in his list. 



Sp. 12. — S. HETEROMYZINA, Ztt. 



This little species is rather aberrant, the palpi being somewhat clavate, so 

 Becker places it among his EydromyzincB. It has the frontal space grey, with 

 yellow forehead ; antennae short, with basal joints rufous, and third one black ; 

 arista slender and nude ; cheeks and epistome white, with a red tinge ; palpi white ; 

 proboscis black ; oral setae two in number ; thorax cinereous, with two sub-distinct 

 brown stripes ; abdomen yellow and glabrous ; wings clear ; legs yellow, with 

 piceous tarsi, and furnished with few bristles. Length, 3 mm. Very rare. 



Sp. 13. — S. CAUBA, Hal. 



A dark brown robust species. Frontalia with vertex and sides pale grey, and a 

 dark red median stripe ; antennae with basal joints rufous, and third one black ; 

 arista bare ; palpi pale, long, sub-clavate, and setose ; proboscis black ; thorax sub- 

 striated, with scutellum cinereous, and marked with numerous black bristle spots; 

 abdomen dark brown, with apex rufous, and having a longitudinal dorsal rufous 

 stripe ; wings with bases flavescent ; legs robust, testaceous, with piceous tarsi, and 

 numerous spines and bristles. Length, 8 mm. Not common, but met with in both 

 England and Ireland. 



Sp. 14.— S. SQUALIDA, MgD. 

 Colour, yellowish-grey ; frontal stripe yellow, with occiput grey ; eyes round ; 

 antennae ferruginous, with bare arista ; face and epistome white ; palpi pale ; pro- 

 boscis black ; thorax with scutellum dark grey ; abdomen mostly dark grey (but 

 sometimes sub-rufous), with red anal segments ; wings flavescent, with cross veins 

 clouded ; legs ferruginous, ciliated with pale hairs, and having the fore femora 

 marked on the upper surface with a large, black, oblong spot or patch. Length, 

 6 — 7 mm. Not rare. 



Sp. 15. — S. ARROGANS, Hal. 



fuscinervis^ ? Ztt. 

 This species is very similar to the last, but has the fore femora nigrescent at the 

 base, and not marked on the upper surface ; it also differs by having the third an- 

 tennal joint rather fuscous, the shoulder points sometimes rufous, and the cross 

 veins more deeply clouded. The fore femora are nigrescent from the base to past 

 the middle. Length, 6 mm. Rare. 



Sp. 16. — S. LITOREA, Flu. 



decipiens, ? Hal. 



Dark grey ; frontalia light yellow, with vertex and occiput grey ; antennf3e 



U 2 



