{ 



1865.] 103 



1. — Idiocerus varius, Germ. 



Flavus, abdomine supra, pectore inter coxas, nigris. ^ vertex 

 antice punctis duobus valde distantibus nigris. Pronotum leviter 

 infuscatum, antice maculis nonuullis nigris transversim dispositis. 

 Scutellum nigro-varium, — scilicet, basi utrinque macula triangulari 

 nigra, medio linea nigra bifurcata, et punctis duobus nigris. Hemelytra 

 flavo-hyalina, nervis fuscis, area lata, obliqua, interiore, byalina ; nervis 

 sub-costalibus medio crassioribus, nigerrimis, costa ipsa 6-7-nodosa. 

 Macula magna stigmaticalis Isete citrina (quae interdum deest). Nervi 

 alares nigri. Pedes fiavi, nigro varii. $ differt fronte infuscata, 

 macula triangulari utrinque intra oculos fusca ; costa baud nodosa ; 

 macula stigmaticali citrina nulla; hemelytrorum nervis medio non 

 incrassatis, fuscis, minus distinctis. Long. 2| ; alar. exp. 6-7 lin. 



I. varius, Germ. ; Flor, R.L. 2, p. 166 ; Fab. ? S.E., 55, 49 ; 

 Ent. Syst., 4, 42 (non Cercopis varia. Fab., S.E., 94, 34). 

 Bythoscopus varius, Burm., Gen., figs. 1-2, ^ 5. 

 Byth. adustus, H. Sch., D. Ins., 144, 9. 



Idioc. stigmaticalis, Lewis, Trans. Ent. Soc, 1, p. 48 ; Curt., 

 B.E., 733, No. 1. 



Closely resembles tbe following species, but is distinguisbed by 

 the somewhat broader head and smaller size, tbe pilosity of the frons and 

 genas, and the black tubercular excrescences on tbe costa of the ^ . It is 

 common both in the midland and metropolitan districts, upon willows 

 and poplars ; and, according to Flor, is found also upon the oak. 



B. Frons et gense nudse, non pilosse Costa in (J non nodosa. 

 a. Gense clypeo arete applicatse, apicem ejusdem non 

 attingentes. 



t Costa (J margine membranaceo extus instructa. Nervi 

 saturatiores quam cellulse. 



2. — Idiocerus Uturatus, Fall. 

 Praecedenti persimilis. Minor, capite nounihil angustiore. Costa 

 ^ non nodosa, sed in utroque sexu medio antice nigra. Frons prope 

 verticem fascia transversa, irregulari, brunnea. ^ $ . 



Long. 2-2i ; alar. exp. 5^ lin. 

 Fall., Hem. 2, p. 60 ; Flor, E.L. 2, p. 168. 

 Bythoscopus lineolatus and dorsiger. Lap. and 8erv., Enc. metb., 

 t. 10, &c. 



On willows, near Mousley and Thames Dittou, in August. 



