338 INSECTA MADERENSIA. 



A. oblong-ovate, densely variegated with dark brown scales. Rostrum as in the other species. Pro- 

 thorax with a shallow dorsal channel, and with four more or less evident and setose tubercles 

 across the central portion (the inner ones of which are the largest) ; produced, and setose, at the 

 apex, where the setse arrange themselves into two rather iU-defincd fascicles. Scutellum as in the 

 preceding species. Elytra punctate-striated ; and with the sides not much rounded ; with several 

 tolerably distinct, more or less setose, and somewhat darker, interrupted ridges and nodules, 

 those behind the middle being the largest ; with a transverse, sublunulate, postmedial, abbreviated 

 patch, common to both (and terminated before and behind by a more or less darker portion of 

 the surface), tolerably distinctly, — and sometimes with exceedingly faint indications before the 

 outer disk of each of an oblique, broken, antemedial fascia very indistinctly, paler : also with a 

 suffused blotch about the scutellum more or less distinctly paler ; and with a narrow, elongated, 

 velvety, dorsal fascicle, likewise common to both (more or less obsolete, but in brightly-coloured 

 specimens connecting the hinder portion of the seutellary blotch with the anterior edge of the 

 sublunulate postmedial patch), of a dark blackish-brown. Antenna and legs as in the previous 

 species. 



The commonest of the Madeu-an Acalles, and, in stature as well as in intensity 

 of colouring, by far the most variable. Its patches and spots are modelled much 

 after the fasliion of those of the A. ornatus ; nevertheless it may be at once recog- 

 nised from that insect by its smaller size, less developed nodules and setse, and by 

 its total want of the additional ashy- (or sometimes even snowy-) white scales 

 Avliich are there more or less evident. It seems to be peculiar to the dense wooded 

 regions of intermediate and lofty elevations, occurring, generally beneath stones 

 and logs of wood, in the thickest parts of the forests, — under wliich circumstances 

 I took it in profusion at the Lombo dos Pecegueiros, diu-iug my encampment in 

 that remote district in July 1850 : and I have likewise captured it at the Cru- 

 zinhas and the Fanal. 



261. Acalles albolineatus, Wall. 



A. oblongo-ovatus, squarais einereis variegatus ; prothorace convexiusculo transversim vix setuloso- 

 subtuberculato, ad apieem bifasciculato-setuloso ; scutello minutissimo ; elytris punctato-striatis, 

 ad latera subrotundatis, carinis interruptis nodulisque obscuris (prsesertira post medium) instructis, 

 sutura et plaga (plerumque sub-oblunulata) communi postmedia postice suffusa (fere ad apieem 

 continuata et antice solum abrupte terminata) ornatis. 



Long. Corp. Hn. lf-l|. 



Habitat in iisdem locis ac prsecedens, sed illo multo rarior. 



A. oblong-ovate, sparingly variegated with dull ashy-white scales. Rostrtim as in the other species. 

 Prothorax with very slight indications of a dorsal channel, somewhat convex behind, and with 

 two tolerably distinct but scarcely setose tubercles across the central ])ortion (the two lateral ones 

 being almost obsolete) ; produced, and slightly setose, at the apex, where the setae aiTange them- 

 selves into two smallish fascicles. Scutellum very small. Elytra punctate-striated ; and with the 

 sides not much rounded ; with several more or less obscure, but scarcely setose, interrupted ridges 



