RHAMPHIDIA. 309 



mote. Proboscis slender, straight, cylindrical, twice the length of the 

 head. Palpi four-jointed, inflexed ; first, second, and third joints ob- 

 long ; fourth a little longer and more slender. Antennae sixteen- 

 jointed, short, simple, pilose, subsetaceous towards the tips ; first joint 

 cylindrical, moderately long ; second cyathiform ; third and following 

 globose. Thorax elliptical. Scutellum small. Wings incumbent, 

 parallel, bare, rather narrow ; mediastinal vein ending at before two- 

 thirds of the length of the wing; subcostal ending at three-fourths of 

 the length, connected with the radial by a transverse veinlet close to 

 its tip; radial and cubital springing from a common petiole, which 

 proceeds from the subcostal at beyond half the length of the wing ; 

 first externo-medial proceeding from near the base of the cubital, con- 

 nected by two transverse veinlets with the third externo-medial ; second 

 externo-medial proceeding from the angle of the outer one of these 

 veinlets ; and in a line with the inner one another veinlet connects the 

 third externo-medial with the subanal. Abdomen long, with eight 

 segments. Legs long, slender, nearly bare, unarmed ; coxae short ; 

 tibiae with very short spurs. Male. Anus small, with an inflexed pair 

 of forceps. Fern. Anus with two long subulate, nearly straight styles. 

 With the exception of the long proboscis, this genus hardly 

 differs from Limnofoa, Div. N, Meigen. 



1. longirostris, Meig. Zw. i. 146. 53 (1818); Mcq. ; Schumm. ; 

 Staeg. ; Eoss. (V.); Zett. Testacea, capite nigro, thorace vittis tribus 

 fuscis, alis sublimpidis, abdomine supra fusco, femoribus tibiisque apice 

 tarsisque nigricantibus. Long. 4 ; alar. 8 lin. 



Testaceous. Head, palpi, and antennae black. Thorax with three 

 brown stripes. Wings nearly limpid ; veins brown, testaceous at the 

 base ; stigma indistinct, very pale brown. Halteres whitish, with 

 brown knobs. Abdomen brown, testaceous at the tip, and mostly so 

 beneath. Legs dark testaceous ; tarsi and tips of the femora and of 

 the tibiae blackish. 



Eare. In the British Museum, and in Mr. Haliday's collection. 

 (E. I.) 



2. flava, Steph. MSS. Lutea, capite nigro, proboscide gracillimo, 

 alis limpidis angustis, pedibus testaceis, femoribus tibiisque apice tar- 

 sisque fuscis. Long. 4 ; alar. 7 lin. 



Luteous, very slender, testaceous beneath. Head, palpi, and antennae 

 black. Proboscis very slender, nearly twice the length of the head. 

 Wings limpid, narrow; veins brownish, testaceous towards the base. 

 Halteres pale testaceous. Abdomen pale testaceous at the tip. Legs 

 testaceous, long, slender ; tarsi and tips of the femora and of the tibiae 

 brown. 



Eare. In the British Museum. (E.) 



