INSECTA MADERENSIA. 449 



truncated) externally, the tarsi being inserted (remote from the apex) into the 

 upper edge of this emargination. Their elytra, unlike those oi Longitarsus, are in 

 every instance i^xuicisLtQ-stnated ; and their antennse (which is perhaps the most 

 remarkable character of all) are composed of only ten articulations, — the second 

 (which in the allied groups is short) being evanescent, and compensated for by 

 the unusually long foiu'th one. In the exceedingly lengthened basal joint of its 

 posterior feet, the present genus agrees with the last ; but the second is con- 

 siderably longer in Psylliodes than it is in Lomjltarsus, giving the foot a very 

 extraordinary, geniculated appearance. 



§ I. Tarsi simplices : alee vel amplce velfere obsoletcB. 



343. Psylliodes chrysocephala. 

 P. obovato-elliptica convexiuscula subnitida cyanesceuti- (vel aenescenti-) viridis, capite, antennaruni 



basi pedibusque (apice femorum posticorum picescente excepto) testaceis, prothorace antice vix 



angustato, elytris punctato-stiiatis. 

 Long. Corp. lin. l|-2. 



Chn/somela chrysocephala, Linn. Fna Suec. 535 (1761). 

 Haltica chrysocephala, Gryll. Ins. Suec. iii. 5G8 (1813). 

 Macrocnema chrysocephala, Steph. III. Brit. Ent. iv. 319 (1831). 

 Psylliodes chrysocephala, Eedt. Fna Austr. 538 (1849). 



Habitat Maderam borealem, in castanetis Sanctse Annse sestate media a.d. 1850 a meipso detecta. 



P. large, obovate-elliptical (being somewbat attenuated posteriorly), rather convex, slightly shining, 

 and bluish- or brassy-green (when immature entirely testaceous) . Head, antenna at base, and legs 

 (except the apical half of the two hinder femora, which are picescent), pale testaceous. Prothorax 

 finely and very closely punctulated ; and very shghtly narrowed in front. Elytra acuminated 

 behind; punctate- striated; and with the interstices veiy finely and most obscurely punctulated. 

 Antenna at apex pale fuscous. 



A common European insect, and one which has most probably been naturalized 

 in Madeu-a from higher latitudes. The only position in which I have hitherto 

 observed it is in the north of the island, where, during the summer of 1850, I 

 took several specimens in the vineyard of Senhor Louiz Acciaioly at Santa Anna. 

 It may be known from the rest of the genus here described by its large size, bluish- 

 or brassy-green sui'face, and by (not merely its legs, but likewise) its head being 

 pale. It is not quite so cyaneous as the ordinary state, — from which it also 

 recedes in having its elytra rather more distinctly striated : nevertheless it is 

 clearly but a local variety. 



344. Psylliodes hospes, Woll. 



P. subelliptica depressiuscula subnitida viridescenti- (vel uigi-escenti-) senea, antennarum basi pedi- 



3 M 



