British Homoptera-Cicadina. 101 
elytra narrowly and evenly, fuscous. Costa narrowly reddish in 
the male. Abdomen entirely yellow. Legs pale yellow, claws 
fuscous. Length, 3 mm. 
On whitethorn; not very common. Lethierry’s de- 
scription (Fieber’s Cicad. d’Hur. (T'yphlocybini) p. 67) is 
not very characteristic of this species. 
10. Typhlocyba Lethierryi, Edw. 
Typhlocyba Lethierryi, Edw., Ent. Mo. Mag., xvii., 
224, fig. a (penis). 
T. sulphurella, Ferrari, Cicad. agri Ligust., 83. 
Anomia sulfurella, Leth., Cat. Hem. Nord., ed. ii., 75; 
Fieb., Cicad. d’Hur. (Typhlocybinz), 60, 5. 
3. Deep yellow inclining to orange. Elytra with the costa 
generally and the inner margin sometimes narrowly reddish ; 
membrane and generally a spot in the apex of the subcostal, 
suprabrachial, and brachial areas pale fusco-hyaline. Hind tibise 
generally tinged with pink. Claws fuscous. Penis divided at the 
apex into three branches, of which the hinder one is trifid, and the 
other two, which spring from a short common stem, are bifid. 
2? pale yellow. Membrane and three spots on the apex of the 
corium pale fusco-hyaline. Length, 3} mm. 
Occurs on-various trees: maple, hornbeam, black 
poplar, elm, andlime. This species, although sufficiently 
distinct from its allies in the structure of the male 
genitalia, is not always easy to identify without a 
reference to those organs. The head and pronotum in 
highly-coloured males are yellow, sometimes tinged or 
marked with red; but less highly-coloured examples of 
that sex have the head and pronotum white, and the 
elytra nearly resembling those of male Douglasi, from 
which they may be distinguished by the paler membrane. 
The female is always much stouter and yellower than 
female rose, and has not the fuscous membrane which 
distinguishes that sex of Douglast. 
11. Typhlocyba rose, Linn. 
Cicada rose, Linn., Faun. Suec., ed. i., 645; ed. ii, 
344, 902; Sys. Nat., 467, 50. 
Cicadula rose, Zett., Ins. Lap., 300, 14. 
Typhlocyba pteridis, Dahlb., Sv. Ak. Handl., 179 (1851). 
