118 Mr. James Edwards' Synopsis of 



frons below the eyes, the clypeus generally pale, and the costa not 

 flattened verticall3^ Length, 6 — Q^ mm. 



On Salix alha ; not common. . 



4. Idioccrus distinriucndiis, Kirschb. 



Idiocerus distinguendus, Kirschb., Cicad., 157, 9. 

 I. cognatus, Fieb., Eur. Bythosc, 455, 10. 



Face greenish yellow, more or less suffused with fuscous above, 

 sometimes with pale spots. Pronotuni greenish yeUow (male) or 

 bluish white (female), more or less suffused with fuscous so as to 

 leave the margins narrowly, a narrow central stripe, and a roundish 

 spot on each side of the disc of the pale ground colour. Scutellum 

 pale with a triangle on each side of the base and a pan- of small 

 roundish spots on the disc fuscous. Elytra lacteo-hyahne, with 

 three wide brown bands which do not reach the costa and are 

 placed one at the base, one just behind the middle, and one at the 

 apex ; nerves punctm'ed, white except in the brown bands, where 

 they are dark brown, base and apes of the anal nerve white, first 

 subapical area reaching about thi"ee-fourths as far as the fom'th. 

 Abdomen above black, hind margins of the segments narrowly 

 greenish. Legs pale, apex of the tarsi more or less fuscous. 



5 . When fi-esh with the face and legs rather strongly tinged 

 with pink. Length, 4^ — 5 mm. 



OnPopuIus alha, Beaufort Gardens, Lewisham ; Shiere, 

 near Guildford. 



5. Idiocerus treimdce, Estl. 



Cicada tremuhe, Estl., Act. Holm., 129, pi. 5, fig. 3. 



Idiocerus unifasciatns, Curt., Brit. Ent., 733, 6. 



I. tremulcB, Flor, Ebyn. Liv., ii., 172, 6 ; Marsh., Ent. 



Mo. Mag., ii., 105, 5 ; Kirschb., Cicad., 157, 8 ; 



J. Sahl., Not. Fenn., xii., 146, 7 ; Scott, Ent. Mo. 



Mag., X., 27, 4. 



Very similar in appearance to the preceding species, and best 

 distinguished therefrom by the brown bands of the elytra reachmg 

 the costa. Length, 4| — 5 mm. 



On Popidus tremula ; not common. 



6. Idiocerus viduatus, n. s. 



5 . Crown and face yellow, vai-iously spotted with rust -red and 

 bluish white, a black puncture near each eye. Pronotum red- 

 brown, a central stripe and a spot on each side of the disc bluish 



