Dec, ipi/-] Dickerson-Weiss : Idiocerus scurra Germar. 223 



Fourth Stage Nymph. — Length 4.0 mm., width of head including 

 eyes 1.65 mm. Antennae and eyes similar to those of third stage. 

 Color markings somewhat similar to those of third stage save brown 

 of thorax which is lighter and brown of abdomen which is darker. 

 Light markings on median dorsal surface more pronounced. Lateral 

 posterior extensions of meso and metathorax more pronounced than 

 in preceding stage. Legs similar to those of third stage with distal 

 ends of tibiae somewhat lighter. Ventral surface similar to that of 

 preceding stage. Sexes plainly distinguishable in this stage. 



Fiftli Stage Nymph. — Length 5.5 mm., width of head including 

 eyes 1.9 mm. Antennae comparatively shorter than in preceding 

 stage. Color and markings similar to those of preceding stage but 

 more variable, the brown color varying from light brown to brown- 

 ish black. In some specimens the dorsal surface is brown except the 

 median portions of the metathorax and abdominal segments one, two, 

 five and six, which are light. In other specimens the lighter mark- 

 ings of the dorsal surface are more extended. The posterior mar- 

 gins of abdominal segments seven, eight and nine bear pronounced 

 hairs. Wing pads extending beyond anterior margin of fourth ab- 

 dominal segment. Ventral surface light. Legs lighter in color, 

 markings similar to those of preceding stage. Rostrum extending to 

 middle of second pair of legs. Sexes plainly distinguishable in this 

 stage. 



■Adult.- — Idiocerus scurra ^ Germ. The original description by 

 Germar appeared in Fauna Ins. Europ., XVII, p. 11, 1834, as follows: 

 " Jassus scurra : ocellis inferis, vertice lunato, pallidus, f usco-mar- 

 moratus, scutello signaturis nigris, collari transversim ruguloso, 

 elytrorum venis fusco-maculatis, costali immaculata. Habitat in 

 Germania." 



Through the kindness of Mr. E. P. Van Duzee we are able to in- 

 clude the following references to Idiocerus scurra. 



Germar, Fauna Ins. Europ., XVII, p. 11, 1834, Jassus. 



Herrich-Schaeffer, Nomen. Ent., I, pp. 69, 112, 1835, Bythoscopus. 



Burmeister, Genera Ins., pi. 10, 1838. 



Walker, List. Homop., Ill, p. 859, 1851, Bythoscopus. 



Kirschbaum, Die Gattung Idiocerus, p. 18, 1868. 



Kirschbaum, Cicad. v. Wiesbd., p. 160, 1868. 



Melichar, Cicad. Mitt. Europ., p. 151, 1896. 



