INSECTA MADERENSIA. 365 



Fa>m. paulo major ; pedibus gracilioribus sed liaud brevioribus ; simplicibus, aiit potius angulo 

 tibianim posticarum (VII. 5 c) externo vix producto. 

 Long. Corp. lin. 5— 5f . 



Habitat in Madera sylvatica excelsa, — per regionem Fanalensem abundans, qua mense Julio a.d. 1850 

 copiosissime observavi : inter Hellenes et muscos super truncos arboruni nascentes, vel sub cortiee 

 laxo, die sese latitat, nocte sola vagans. 



A. elongate-ovate, piceous-black, and densely variegated with a robust, decumbent, dull greenish- 

 brown and dirty-yellowish pubescence. Rostrum shghtly dilated at the apex ; almost unpunctured ; 

 and with a narrow longitudinal channel, more especially apparent between the eyes. Prothorax 

 widest about, or sometimes a little behind, the middle ; rather remotely, but distinctly pimctured. 

 Elytra punctate- striated ; sparingly beset with elongated, suberect, stiff additional hairs (which 

 are rather longer posteriorly, and somewhat more numerous, than in front) ; and the alternate 

 interstices longitudinally tessellated with fascicles of blacker pile. Antenna elongaied, and 

 ferruginous ; the first and second joints of their funiculus equal (or, if there be any difference, 

 the former rather longer than the latter). Legs more or less fuscescent, or piceous ; the tarsi 

 fusco-ferruginous, their terminal joint (except the claws, which are, as in all the other species, 

 black) being rufo-testaceous. 

 Male, with the legs broad and robust. The two anterior tibia with their apical spine obsolete, 

 crenrdated internally, suddenly and greatly emarginated or scooped out towards their extremity, 

 and with the extremity itself considerably incurved ; the intermediate ones with the spine only 

 just perceptible (being triangular, and placed rather behind the extreme apex), with the crenula- 

 tions (as in the hinder pair) obsolete*, and but slightly incurved at their extremity; the hinder 

 ones very slightly constricted before their extremity, the extremity itself with its external surface 

 suddenly and greatly expanded out, the inner angle being scarcely at all either truncated or 

 formed into a heel, and consequently almost a right angle, and the outer one being produced into 

 an excessively prominent and acuminated process,— the whole forming a somewhat triangular 



plate. 

 Female rather larger ; with the legs slenderer, but not shorter, and simple, — the hinder tibiae being 

 but very slightly produced at their outer apical angle. 



A large and exceedingly well-defined species. Apart from the structiu-al modi- 

 fications of its tibiae, it may be at once known from the other Atlantkles here 

 described by its gigantic size, lengthened antennae, by the dull yeUowish-green 

 pubescence with which it is variegated, by the robustness and remoteness of the 

 elongated additional hairs with which it is beset, and by the distinctness and 

 comparative regularity of the darker fascicles with which the alternate mter- 

 stices of its elytra are longitudiaaUy tessellated. Its male sex however is suffi- 

 ciently identified even by the development of its tibiae,— the deep subapical 

 emargination of the anterior pair, added to the almost unarmed intermediate, and 

 nearly entu-e irmer angle of the posterior ones, giving it a character which it is 

 impossible to mistake. It seems to be confined to high elevations, and to attain 

 its maximum on the extreme upper limits of the forest districts. It is strictly 



* Vide note, p. 355. 



