51 lAiigust, 



Geu. LEDHA, Fab. 



1. — Ledra aiirita, Lin. 

 Cicada anrita, Lin., S.N. 2, 706. Ledra, Fab., S.E., 24, 1. 

 Cuv., llegne Anim. Insectes, Atlas, pi. 98, fig. 7. Curt.,B.E., 

 G76, fig. Burm., Gen. Ledra, fig. Germ., Mag., 4, 54 ; &c. 



Need not be described here. The imago is excellently figured by 

 Burmeister and Curtis, II. cc, and the larva in Westwood's Introd. 

 vol. II. The latter feeds upon the oak, and I have found it more than 

 once both in the London and midland districts, but failed in the attempt 

 to rear specimens. It leaps feebly, and does not* protect itself within 

 the same frothy discharge as some of the following insects. One nearly 

 adult larva was found by me near Cheltenham, while digging at the 

 roots of an oak, in January, showing that, like many other Homoptera, 

 it hibernates in this imperfect condition. It represents in our latitude 

 the extensive group typified by the genus Scams, and if we except 

 Cicada montana, Scop., is the largest of British ILomoptera. It is far 

 from common, although widely distributed : the best locality for it near 

 London is the pleasure-ground called " Botany," belonging to the 

 hotel at Purfleet. 



^^ Pronotum lateribus simplex. 



Gen. TRIECPHORA, Am. et Serv. 



Separated from Cercopis in the " Suites a Buffon," Hemipt., p. 561, 

 upon the following grounds : — Pronotum emarginate behind ; head 

 larger, less elongate, and more rounded anteriorly, with three carinas 

 on the frons. The species which remain after this restriction are all 

 exotic, belonging to Java, China, and Australia. 



1. — Triecphora sanguinolenta, Lin. 



Atra, nitida, punctata ; abdominis ineisurse et apex, et hemelytro- 

 rum maculje tres magnae, sanguinese. ^ $ . Long. 3-4, alar. exp. 9 lin. 



Cicada sanguinolenta, Lin., S.N., 2, 708. Cercopis id., Fab., 

 S.E. 92. Cuv., Eegne Anim., Insectes, Atlas, pi. 99, fig. 1. 

 vidnerata, Rtissi, F.E. 2, 350. Germ., Mag. 4, p. 45, No. 15. 

 vulnerata and sanguinolenta, Curt., B.E. 461, 2 (fig.), and 1. 

 dorsata, Ahr., Fn. 1, 21. 



• Curtis, BE. 678, expresses himself doubtfully upon this point in the econorav of Ledra. I 

 think I am correct in stating that only two genera, Ptyelui and Aphrophora, in this country, produce 

 the secretion in question. 



