INSECTA MADERENSIA. 335 



In the great development of its uodules the present Acalles approaches some of 

 the early members of the second division of the genus ; nevertheless its large size, 

 obscure colour, its want of a visible scutellum, and its general habits must retain 

 it in the first of the sections. It occui's, like the previous two species, near Evm- 

 chal, where however it appears to be exceedingly scarce. 



§ II. Corpus plerumque minus, interdum late variegatum ; scutello scepius distincte ohservando. (Habitant 



in locis sylvaticis, prsesertim supra 2000 ped. alt.) 



257. Acalles Vau, Woll. 



A. oblongo-ovatus, squamis cinereo-brunneis variegatus ; prothorace transversim valde setoso-tuber- 

 ciilato, ad apicem dense bifasciculato-setoso ; scutello valde distincto ; elytris punctato-striatis, 

 ad latera rotundato-ampliatis, earinis interruptis nodulisque majoribus setosis (prsesertim post 

 medium) instructis, figura V communi postmedia valde distincta ornatis. 



Long. Corp. lin. 2,\-Z. 



Habitat ad rupes locorum editiorum Maderfe, inter arbusculas ibidem cre.scentes, testate rarior : ad 

 Cruzinhas et in convalli Ribeiro de Joao Delgada dicta meuse Julio a.d. 1850 primus inveni. 



A. oblong-ovate, densely variegated witb brownish and ashy-white scales. Rostrum with the same 

 sexual distinctions as in the other species. Prothorax with a shallow dorsal channel, and with 

 four very setose tubercles across the central portion (the inner ones of which are the largest) ; 

 produced, and densely setose, at the apex, where the setse arrange themselves into two distinct 

 fascicles. Scutellum very apparent, and clothed with ashy scales. Elytra punctate-striated ; and 

 with the sides tolerably rounded, uneven, and projecting; with several large, more or less setose, 

 interrupted ridges and nodules, those behind the middle being very greatly developed and pro- 

 minent ; and with a transverse, postmedial, very abbreviated V-shaped patch, common to both, 

 of a more or less pure white. Antenna and legs as in the previous species, the latter however 

 being a little more variegated with pale and dark scales. 



The regular and well-defined V-shaped postmedial patch of the present species 

 will be sufiicient, apart from its largely developed nodules and setae, its compara- 

 tively e\"ident scutellum, and the more or less ashy-white scales with which it is 

 besprinkled, to distinguish it from the remainder of the genus here described. It 

 is exceedingly rare ; and I have hitherto only taken it by brushing the short but 

 dense vegetation which clothes the faces of the perpendicular rocks in the lofty 

 sylvan districts ; under which circumstances I cajitured several specimens, both at 

 the Cruzinhas and at the extreme head of the Ribeii'o de Joao Delgada, dm^ing 

 July 1850. 



258. Acalles tenninalis, Woll. 



A. oblongo-ovatus, squamis luteo-brunneis variegatus; prothorace transversim setoso-tuberculato, ad 

 apicem dense bifascieulato-setoso ; scutello distincto ; elytris punctato-striatis, ad latera rotundato- 

 ampliatis, earinis interruptis nodulisque majoribus setosis (prsesertim post medium) instructis. 



