140 INSECTA MADERENSIA. 



suture and alternate interstices a little raised and interrupted, — forming, generally, most obscure 

 nodules behind, which are more or less sparingly clothed with a dull olivaceous pubescence. 

 Antenna and leys ferruginous : the latter with their femora and tibiae a little darker than the 

 tarsi, which are simple in both sexes. 



Less distinct, prima facie, than any of the remainder; nevertheless it may be 

 known by its compact, rather short, and squarish form, by its obscou-e and gene- 

 rally much incrusted surface, and by its subconcolorous and subnodose elytra. 

 Although without many decided characters to separate it from one or two of its 

 allies, yet, after a careful examination of many specimens, I am inclined to believe 

 tliat the T. compactus is a true species, being somewhat intermediate between the 

 T. nodosns, on the one hand, and the T. Lauri and rotundatus, on the other, — 

 partakmg slightly of the characters of the whole tlu-ee, though merging into none. 

 It is not very common, but is found occasionally, during the summer months, in 

 the damp ra^-incs of intermediate altitudes, in company with the rest. My speci- 

 mens were taken principally at the Ribeu-o Frio. 



114. TarpMus nodosns, WoU. (Tab. III. fig. 6.) 

 T. subquadi-ato-ovatus robustus nigcr, prothorace subquadrato, granulis crebris obtusissimis obsito, 

 elytris concoloribus rugose seriato-punctatis, interstitiis alternis elevatis interruptis, nodos 

 formantibus. 

 Mas, elytrorum nodis minoribus, tarsis anterioribus articulo basilari in lobum longissimum spini- 



formem acutum subtus producto, posticis simplicibus. 

 Fmm. elytrorum nodis majoribus, tarsis simplicibus. 

 Long. corp. lin. mas, 1^-1^ : fcem. \^-2\. 



Habitat per regionem Maderse sylvaticam, sub truncis arborum prolapsis necnon sub lai)idibus, sestate 

 baud infrequens. 



T. large and robust, and somewhat quadrate, dull black, not much clothed with scales, and with the 

 setifi of an obscure golden-brown tinge. Head and pruthurux beset with very close and obtuse 

 grannies : the latter obscurely channeled, rather wide and subquadiate, — being widest however a 

 little before the middle. Elytra concolorous, rugosely seriate-punctate, and wrinkled transversely ; 

 the suture and alternate interstices elevated and interrupted, especially towards the outer disk 

 and apex, forming distinct nodules. Antenna and legs of the same colour as those of the last 

 species. 



Male, rather smaller than the female, and with the nodules less apparent : the basal joint of the 

 fore and intermediate tarsi produced internally into a very long, spiniform and acute lobe ; the 

 hinder tarsi simple. 



Female, large and robust, with the surface more uneven, the nodules being greatly developed : the 

 tarsi simple. 



Distinguished from all the Tinph'ii here described; — as regards the males, by 

 its four front feet having theii- basal joint produced beneath into a very elongated, 



