A HISTORY OF CORNWALL 



but consists of species that have with certainty been identified in the Schools' collection, together 

 with such additional ones as are recorded by the entomologists already mentioned. 



The best known member of the sub-order is the universally distributed Philaenus spumarius, 

 one of the frog-hoppers that in the immature stages secretes and protects itself with a large mass of 

 froth forming the familiar frog-spit, so much dreaded by Cornish children, and about which there are 

 so many traditions of evil in the folklore of the county. The largest species in Cornwall is the 

 quaint and rare Ledra crinita, the biggest of which, taken near Launceston, measured exactly three- 

 quarters of an inch in length. Many of the species are in places extraordinarily abundant. The 

 elm trees about Truro literally swarm at times with Typhocybidae, and in the last few days of June, 

 1902, immense clouds of Eupteryx auratus arose whenever the rank herbage on some unoccupied 

 house-sites at Newquay was disturbed. 



The county list includes the curious Issus co/eoptratus, which in the nymph condition is fairly 

 common on a hedgebank near Pencalenick, Truro ; the striking Tricophora vulnerata, in blood-red 

 and black, from near Calstock; and the very local Liburnia lepida from Looe. Bythoscopus rufusculus 

 is not uncommon on willows at Scilly, and in 1904 Pediopsis tibialis was plentiful on the brambles in 

 a country lane near Penryn. The Lizard is evidently the only known British locality for Agalla 

 similis. Platymetopius undatus has lately been taken on bracken in the Luxulian Valley, and the rare 

 and local Deltocephalus striifrons on restharrow close to Falmouth. D. socialis occurred rather 

 sparingly in 1905 near St. Clement's, Truro. Three specimens of Limotettix nigricornis were taken 

 on two separate occasions about a week apart at Botus Fleming. Eupteryx melissae was taken by 

 Dale on tree-mallow at Scilly, and in 1 903 by Price on the island of Roseveare. E. fillcum was 

 found by Mrs. Clark in 1905 on the lady fern near Millook. Arytaena genistas was common 

 for several weeks in 1 904 in a great bank of furze near Kea, Truro. Trioza gali't has been taken by 

 Dale at Bude. T. crithmi was plentiful at Whitsand Bay east in 1905. 



CICADINA 

 MEMBRACIDAE 



Centrotus, Fabr. 



cosnutus, L. 



TETTIGOMETRIDAE 



Tettigometra, Latr. 



impresso-punctata, Sign. Valley 



of the Lynher, rare 



ISSIDAE 



Issus, Fabr. 



coleoptratus, Geoff. Truro 

 Cixius, Latr. 



pilosus, Ol. 



cunicularis, L. 



nervosus, L. 



brachycranus, Fieb. Penzance 



(Saunders) 



scotti, Edw. Penzance (Saun- 



ders) 



DELPHACIDAE 

 Liburnia, Stal. 



lineola, Germ. Mount Edg- 



cumbe (Dale) 



fuscovittata, Stal. Launceston 



vittipennis, J. Sahl. 



lepida, Boh. Looe 



fieberi, Scott. The Lizard 



(Dale) 



pellucida, Fabr. 



striatella, Fall. Land's End 



(Dale) 



fairmairi, Ferris 



limbata, Fabr. 



mesomela, Boh. 



HOMOPTERA 

 CICADINA (cant.) 

 DELPHACIDAE (cant.) 



Stiroma, Fieb. 



pteridis, Boh. 



CERCOPIDAE 

 Triecphora, Am. et Serv. 



vulnerata, Illig. Calstock 

 Aphrophora, Germ. 



- alni, Fall. 

 Philaenus, Stal. 



spumarius, L. 



campestris, Fall. 



lineatus, L. 



LEDRIDAS 



Ledra, Fabr. 



aurita, L. Launceston ; Lis- 



keard ; BisAop's Wood, Truro 



ULOPIDAE 



Ulopa, Fall. 



reticulata, Fabr. 



PAROPIIDAE 



Megophthalmus, Curt. 



scanicus, Fall. 



BYTHOSCOPIDAE 



Macropsis, Lewis 



lanio, L. 

 Bythoscopus, Germ. 



alni, Schr. 



rufusculus, Fieb. Sci/fy 



flavicollis, L. 



242 



CICADINA (cent.) 

 BYTHOSCOPIDAE ( one.) 



Pediopsis, Burm. 



scutellatus, Boh. 



tibialis, Scott. Fa/moufA 



virescens, Fab. 

 Idiocerus, Lewis 



laminatus, Flor. 



lituratus, Fall. 



populi, L. 



albicans, Kbm. 

 Agallia, Curt. 



sinuata, Muls. Lizard (Dale) 



puncticeps, Germ. 



venosa, Fall. 



TETTIGONIDAE 



Evacanthus, Lep. et Serv. 



interruptus, L. 

 Tettigonia, Geoff. 



viridis, L. 



ACOCEPHALIDAE 



Strongylocephalus, Flor. 



agrestis, Fall. 

 Acocephalus, Germ. 



nervosus, Schrk. 



bifasciatus, L. Falmouth 



albifrons, L. 



histrionicus, Fabr. Newquay 



flavostriatus, Don. 

 Eupelix, Germ. 



cuspidata, Fabr. 

 Platymetopius, Burm. 



proceps, Kb. Falmouth (Dale) 



