()6 BRITISH CICADiE. 



Frons. 

 Black or hroivn. — L.collina, adela, discolor, obscurella, 

 flaviola. 



Yelloiv betiveen the heels. — L. notula, denticauda. 



SCUTELLUM. 



Blaclc or dark hroum. — L. pellucida, obscurella, forci- 

 pata, venosa, discreta, lineata, limbata, discolor, exigua, 

 lepida. 



Abdomen. 



Concolorous yelloiv. — L. Scotti, smaragdula,* Fieberi, 

 Fairmairei, Signoreti, adela, pallidula, Ingnbrina, dis- 

 tincta, obscurella, striatella, mesomelas,* straminea.* 



More or less suffused ivitli red. — L. lineola, longipennis, 

 vittipennis. 



Those marked by an asterisk apply to the brachy- 

 pterous females only. 



Genus XL— DICRANOTROPIS, Fieh. 



Frons with two isolated carinae and one central, 

 which last is divided or forked at about its middle. 

 Vertex square. Clypeus convex, with three keels con- 

 fluent with those of the frons. Hind tarsi equal in 

 length with the tibise. Laminated spur moderate in 

 length. 



Of the four European species described, but one has 

 been hitherto noted in Britain. 



DicRANOTROPis HAMATA, Bok. Plate XIX., figs. 1, la, 



1 h, 1 c. 



Dclphax hamata, Boh. ; Flor ; Marsh. 



,, notula, H.-Schiiff. 



,, striatella, Stal. 

 Dicranotropis hamata, Fieb., G. D. t. 8, fig. 17; 



Kirschb. ; Scott; Sahl.; Fieb., C. E. pt. iv. 87 ; 



Edw. p. 97. 



