104 (October, 



ft Costa ^ margine membranaceo non (aut vix et prope 

 basin tantum) instructa. Nervi et cellulae concolores. 



1. Hemelytra ti-ansversim pallido fasciata. 



3. — Idiocerus laminatus, Flor. 



Flavus ; abdomen supra nigrum, segmentis flavo-marginatis. 

 Pronotum medio infuscatum. Scutellum basi bis nigro-maculatum, 

 medio infuscatum. Hemelytra nitida, brunnea ; ante membranam 

 fascia lata hyaliua. Pedes pallide flavi, plus minus nigro lineati; 

 unguiculae nigrae. Valvulae ventrales ^ priBlongse, albid*, supra et 

 infra nigro marginatsB ; subtus albo ciliatse. $ 



Long. 2| lin. 



/. laminatus, Flor, E.L. 2, p. 171. 



In Mr. Douglas' collection. 



2. Hemelytra non transversim pallido fasciata. 



4. — Idiocerus 2)0;puli, Lin. 



Prsecedenti similis, viridis vel flavus ; pectore abdominisque seg- 

 mentis supra plus minus nigris. Vertex punctis duobus prope oculos, 

 late distantibus, fuscis. Pronotum plus minus infuscatum, antice 

 punctis quatuor transversim positis, nigris. Hemelytra nitidissima, 

 pellucida, flavo-brunnea, sub-am-ata, nervis iudistinctis. Pedes ut in 

 praecedente. Velvulae ventrales J* breviores, flavae. 



Long. 2-2g ; alar. exp. 6-7 lin. 



Cicada poptdi, Lin., S.N. 5, p. 463. 



lassus onargarita, Enc. mcth., t. 10, p. 612. 



lassus fulgidus, Fab., S.R., p. 87, n. 13. 



Idiocerus sulphureus, effidgens, unifasciatus (?), and ceneus, 



Curt., B.E., 733, n. 4-7. 



This is a common and very elegant species, subject to much 

 variation : the markings are often very pale ; sometimes the entire 

 insect is of a pearly white colour, perhaps becanse immature. The 

 larva is pale green, with black transverse lines and many black dots. 

 Inhabits Pojyulus alba and tremula, and various species of Salia:, 

 throughout the country. 



b. Gense a clypeo disjunct*, libera?, apicem ejusdem attin- 

 gentes. 



