﻿206 I February, 



14. decidua, Egger, is distinguished from the rest of this group by its 

 broad, fiat epistomal knob, yellowish antennae, and whitish fascia- 

 like pubescence on the abdomen in the female, like pigra, to which 

 it is much allied ; there is one female in the Entomological Club 

 collection. 



15. vernalis, Fin. I am not sure whether I am right in the determina- 



tion of this species, and cannot at all make up my mind as to its 

 limits, as it varies exceedingly in the colour of its pubescence and 

 tibiae, the shape of the abdomen, &c. ; the species, or group of 

 species, is distinguished from the others by its smaller size, short 

 shining epistoma, dark antennae with almost bare arista, black legs 

 with the tibiae ranging from almost black to broadly yellow at both 

 ends, and the thickened hind metatarsus, It is common in mea- 

 dows and banks of rivers from May to July. 



16. prcecox, Ztt., is the smallest species I have seen, and may further be 



known by its narrow abdomen, bare arista, and yellow legs, with 

 the femora at the base broadly, and the last joint of the tarsi 

 blackish ; there is a pair in Mr. Unwin's collection, and a female 

 in that of the Entomological Club. 



Group III. — Epistoma without any hairs on the disc ; eyes hare. 



17. pulchripes, Lw. This is very much like the last species, but is 



much larger, and bas the eyes quite bare ; it is readily known by 

 its pale legs, with the tarsi principally pale, the antennae are red- 

 dish-yellow, very large in the female, and the arista is almost bare. 

 I believe it is not rare, as I have caught it near Lewes and 

 Richmond. 



18. scutellata, Eln., may be distinguished from any other species by its 

 very large swollen epistomal knob ; its legs are principally pale, 

 and its antennae brown. It is the commonest species after varia- 

 bilis, occurring on Umbelliferce in June. 



19. soror, Ztt., resembles the last, and, like it, has the tip of the scu- 

 tellum yellowish in the female ; it differs in the bright orange-red 

 antennae and smaller epistomal knob. There is one female in the 

 Entomological Club collection. 



20. pubera, Ztt. This, and the following species, have the legs quite 



black, and, all but the last, have the antennae blackish ; pubera is 

 distinguished by its bright reddish pubescence ("pube subaurea" 

 E-ond.), distinctly though shortly pubescent arista, and yellowish- 

 hyaline wings. I possess a female captured in the Plashett Wood, 

 near Lewes. 



