INSECTA MADERENSIA. 341 



dense humid spots of intermediate altitudes, being usually found amongst ranlv 

 vegetation in the thickest parts of the forest districts, especially in the vicinity of 

 the waterfalls and streams. In such situations, I have taken it at the Lombo dos 

 Pecegueiros in July, and in the region of the Uibeiro Frio in August. 



264. Acalles cylindricollis, WoU. 



A. suboblongus angustus, squamis brunneis dense nebulosus ; prothorace subcylindrico postice con- 

 vexo, haud tuberculato sod setis paucis mediis transversim muiiito, ad apieem minus acuminato 

 sed setoso ; scutello distincto ; elytris punctato-striatis, ad latera subreetis, haud nodulosis sed 

 plaga transversa communi postmedia (postice sed praesertim antice fusco-terminata) sat distincta, 

 et fascia antemedia obliqua (in maculam subscutellarem obscuram antice suffusa) obscurissima, 

 ornatis. 



Long. Corp. lin. 1^. 



Habitat in Maderse convallibus umbrosis, rarissimus ; ad Ribeiro de Santa Luzia Maio exeunte a.d. 

 1849 semel tantum repertus. 



A. nearly oblong, and narrow, densely variegated with brownish scales. Rostrum as in the other 

 species. Prothorax with scarcely any indications of a dorsal channel; subcylindrical, convex 

 behind, almost untubercled, but with a few large seta; scattered across the central portion ; 

 slightly produced, though not at all acuminated, at the apex, where however there are several 

 large scattered setae. Scutellum large. Elytra punctate-striated, with the sides somewhat 

 straight, though ohlique, — being rather constricted at the base and a little expanded behind the 

 middle ; without nodules, though with the alternate interstices just perceptibly raised throughout ; 

 with a transverse, abbreviated, postmedial patch, common to both (bounded evidently in front, 

 and more obscurely behind, by a darker portion of the surface), tolerably distinctly,— and with an 

 oblique antemedial fascia (suifused in front into an obscure scutellary patch, — the two together 

 forming an indistinct, and somewhat triangular, basal blotch) most obscurely, paler. Antenna 

 and legs as in the last species. 



It is just possible that the unique insect from which the above diagnosis has 

 been di-awn out may be but a greatly developed and local state of the A. Wollas- 

 toni ; nevertheless since it certainly possesses characters abimdantly sufficient for 

 specific isolation, if it be a normal specimen of its Idnd, I am induced to retain it 

 as separate, believing that future investigations will fully confirm me in regarding 

 it as in reality distinct. Assvmiiag therefore my single indi-^-idual to be a typical 

 one, it may be described as larger and more setose than the A. Wollastonl, as 

 being more densely clothed with brownish scales, and altogether free fi-om the 

 ashy-white ones which are more or less perceptible on that iasect, and as having 

 its elytra straighter at the sides (though oblique), with their widest part behind 

 the middle, and with theu- postmedial patch and basal space much more clearly 

 defined, — the former of which moreover is very conspicuously ter min ated in front 

 by a darker transverse portion of the surface. My solitary example was captiu-ed, 



