TRIFIDA:. 93 



It was first recorded in this country in 1 81.7, by the late 

 Mr. F. Bond, who took it in Yaxley Fen, and very soon it 

 was found to be common there and at Whittlesea Mere, con- 

 tinuing so until they were drained. Still obtained in the 

 remaining fens of Cambridgeshire, and in those of Norfolk 

 and Suffolk, extending even to the little bits of fen still 

 existing near Whittlesford, Merton, Yarmouth, Lowestoft, 

 Beccles and Lakenheath, and taken rarely in the marshes of 

 the north bank of the Thames in Essex. I know of no other 

 localities for it in these Islands. Abroad it is found in many 

 parts of Northern, Central and Western Germany, and pro- 

 bably in suitable places in Holland, Switzerland and Russia ; 

 but this is not very clear, since there seems to be a pro- 

 bability that its localities are sometimes confused with those 

 of iV. arundineta, Schmidt, dissoluta, Tr. 



Genus 49. CGENOBIA. 



Antenna) almost naked ; eyes naked, prominent, without 

 lashes ; thorax thin, smooth, abdomen very slender, not 

 crested ; fore wings short, broad, and blunt ; hind wings 

 weak, vein 5 hardly perceptible. 



We have but one species. 



1. C. rufa, Raio. ; despecta, Tr., Stainton. — Expanse f to 

 1 inch. Small and weak ; thorax and abdomen very slender ; 

 fore wings short, pale reddish-drab or whitish-drab ; nervures 

 dusted and dotted with black ; hind wings dusky-white. 



Antennae of the male simple, very minutely ciliated, 

 whitish-brown ; palpi slender, depressed, dirty-white, clouded 

 outside with dusky-black ; head flattened above but with a 

 projecting frontal tuft, pale brown dusted with white ; thorax 

 slender, smooth, of the same colour ; abdomen very slender, 

 glossy, yellowish-white with a reddish tinge ; lateral and 

 anal tufts small, more tinged with reddish-brown. Fore 

 wings thin, short ; costa gently arched ; apex bluntly angu- 



