Cooke: Homoptera of Lanca&hire and Cheshire. 71 



6. Thysanoptera. — This order, consisting of the single family 

 Thripidas (all very minute insects), was proposed by Haliclay, and 

 adopted by Westwood. I recognise it as a distinct order, in deference 

 to the opinion of so eminent an entomologist as the proposer of the 

 title, and the principal investigator of the group. 



I must now conclude. The subject is so vast that it is not an easy 

 matter to compress it into the limits of a paper without running the 

 risk of being misunderstood. I have repeated very little of the paper 

 published in the Zoologist in its original form. It has been my aim to 

 avoid as much as possible the introduction of anything new in principle 

 and in nomenclature. My sole object is to aid, if I can, in bringing 

 the classification of insects into a more systematic form than it is at 

 present. I have carried out the details, in the arrangement of my own 

 collection, chiefly in the orders Hymenoptera, Diptera and Hemiptera ] 

 but these details will require a thorough revision, and this cannot be 

 done properly without assistance. 



Southport, Sept., 1882. 



CONTRIBUTION TO A LIST OF THE HOMOPTERA OF 

 LANCASHIRE AND CHESHIRE. 



[the north of LANCASTER EXCEPTED.] 



By Benjamin Cooke. 

 CIXIIDiE. 



Cixius cunicularius, F. Manchester, Hazelgrove, Ma,rple. 



C. nervosus, L. Manchester. 



C. brachycranus, Scott. Marple, August, 1865. 



C. pilosus, Oliv. BoUin Yalley, near Bowdon, 



C. stigmaticuSj, Germ. " The Brushes," near Stalybridge, June, 1863 



DELPHACID.^. 

 Liburnia pellucida, F. Manchester, Rivington, Bowdon. 

 L. discolor, Boh. Hazelgrove, Marple. 

 L. neglecta, Flor. Manchester. 



APHROPHORIDJj}. 

 Aphrophora alni, Fall. Hazelgrove. 

 Philaenus spumarius, L. Abundant. 

 P. lineatus, L. Bollin Yalley. 



MEMBRACID^. 

 Centrotus cornutus, L, Warrington. 



ACOCEPHALID^. 



Strongylocephalus agrestis, Fall. Manchester, Southport, Bowdon, 

 Marple. 



