The structure of the antennae and the neuration of the wings 

 show that Nemotelus is evidently nearly allied to Oxycera 

 (PL 441), but the spined scutel, obtuse head, and short lip of 

 this genus at once separate them; and the same characters, as 

 well as the antennae, will distinguish Sargus (PI. 305) and 

 Pachygaster (PI. 4ii) from the Nemoteli. 



I should observe that the trophi I have examined do not 

 agree with fig. 17 in Meigen, the apex of the lip being thick- 

 ened and bilobed as represented in our plate. The following 

 are British species of Nemotelus. 



1. iiliginosus Linn. — Meig. v. 3. 114. l.pl. 25. Jl 19 ? . — Don. 

 15. pi. 519. f. 1.2. 



" Thorax black with a lateral white stripe : abdomen wjiite 

 with a black spot before the apex in the males, or black with 

 the margins and dots white in the female. 3 lines long." 

 June, flowers in meadows, Tollsbury, Essex, and Thetford; 

 July, a female, on Mangerton Mountain near Killarney. 



2. pantherinus Linn., Meig. pi. 25. j^ 20 c^. — ul'igmosus Panz. 

 46. 21 cT.— marginatus Fab. ? .—Panz. 46. 22 ? . 



" Thorax black, immaculate ; abdomen white, with a black 

 spot before the apex in the male, or black, with the margins 

 and dots white in the females. 2 to 2| lines long." 

 End of Ma}', marshy meadow. North Cray, Kent, Mr. Hali- 

 day. June, Cambridgeshire, J. C. 



3. nigrinus Fall.— Curt. B. E. pl.l19 '^ .—Panz. 107. 17 c?. 

 Beginning of July, Swaffham, Thetford warren and Bat- 



tersea; Bog of Allan, Connemara and Holy wood, Mr. Ha- 

 liday. 



4. brevirostris Meg. 

 " Black shining : legs white, thighs black : rostrum very 

 short and obtuse. 1^ line long." 



Recorded as having been taken near London. 



Coriandrum sativum, Common Coriander, I found last July 

 in Battersea meadows. 



