20 HAUSTELLATA. 
Plate XLII. fig. 1 
Corethra plunncornis. 
Co. Ocliraceo-fiisco, thorace rittd lateral? pedihmqnc albidh. (Long. 
Corp. 2i— 3i liu.) 
Ch. plumicornis, Fabricius.— Steph. Catal. No. 7655. 
Ochreous-biown ; pilose, thorax darker on the back, the sides each with 
a broad white streak ; abdomen ochreous-brown, the edges of the seg- 
ments pale ; legs ochreous-white ; wings hyaline ; halteres white : 
antennae brown, with ochrcous-brown hairs. 
Common about Ripley, in June and July, in marshy places; 
found also in other parts within the metropolitan district. 
Plate XLII. fig. 3. 
Ceratopogon palustris. $ 
Ce. Ater, halteri/ms jjcclibvaqne piceis. (Long. Corp. l^lin.) 
Ce. palustris, Lutreille—Steph. Catal. No. 778/. 
Deep black ; thorax glossy ; abdomen opaque ; legs and halteres brown ; 
wings greenish, with the nervures obscure. 
Abundant in marshy places, throughout the metropolitan dis- 
trict, during the summer. 
