286 INSECTA MADERENSIA. 



granulated, and with coarser tubercles or points scattered over its anterior region, — which is 

 produced and a little acuminated, and has its extreme apical margin slightly reflexed ; with a 

 longitudinal, abbreviated, subglabrous dorsal line behind, and with obscure indications of a small 

 irregular elevation on either side of it. Elytra usually rather paler than (and a little naiTower 

 than the central portion of) the prothorax ; free from longitudinal costae, and almost impunctate, 

 — or with very slight indications of ill-defined punctures just perceptible towards the outer mar- 

 gins. Antenna and legs generally pale ferruginous ; the furvier usually (particularly the flabel- 

 lated processes of the male articulations) a little infuscated. 



The Madoiran representative of the common Eixropean P. ^jec^mecorwis, although 

 most unqucstionalily distinct from it, — being not only, on the average (for both 

 species are exceedingly variable in size), larger and more rufescent than that 

 insect, but hlvcwise differing in the sculpture of its elytra, which are (though 

 [)ubescent) comparatively smooth and almost impunctate ; whereas in the P. pec- 

 tmicornis the punctures are large and conspicuous. It is decidedly scarce, — 

 nevertheless widely distril)uted over Madeu'a, from the vineyards of the southern 

 coast to about 3500 feet above the sea. I first captured it in the garden of the 

 Quinta d'Ambrosio, near Punchal, during the spring of 181-8 ; and in June of 1850 

 I met with it in the north of the island, — in the house of Senhor Louiz Acciaioly, 

 at Santa Anna. It is not attached exclusively however to the -vicinity of the 

 towns and villages, — since, during July of 1850, I took it in the dense forest 

 region of the Lombo dos Pecegueiros ; and, in August of the same year, in the 

 (Equally remote, though more open, district of the Feijaa de C6rte. 



Genus 100. RHYZOPERTHA. 



Stephens, ///. Brit. Ent. iii. 3o4 (1830). 



Corpus parvum, elongatum, cylindricum, durum : capite deflexo : prothorace subgloboso convexo, 

 antice producto ct scabroso : alls amplis. Antenna lO-articulatse clavata;, articulis primo et 

 sccundo robustis (illo paulo longiore crassiore), tertio ad septimum minutissimis suba;qualibus, 

 reliquis clavam magnam abruptam perfoliatam triarticulatam cfficientibus (octavo et nono sub- 

 aequalibus intus productis, decimo obliquo-ovato). Labrum subcorneum amplum hexagonum, 

 apice valdc pilosum. MandihuLf magnne cornere valida? arcuatre, infra apicem dente obscuro, 

 necnon ad basin membrana, iustructai. AlaxilUe bilob:e, lobis submcmbranaccis valde pubcscen- 

 tibus ; externa elongato angusto ; inteiiw paulo brcviore angustissimo. Palpi subfiliformes ; 

 maxillares articulo primo parvo, secundo longiore crassiore clavato, tertio huic paulo brenore, 

 ultimo longissimo subacuminato-cylindrico ; lahiales articulo primo parvo, sccundo longiore cras- 

 siore, ultimo elongato subcylindrico-ovato. Mentum corneum transversuni, antice levitcr rotun- 

 dato-productum. Ligula mcmbranacea longiuscula, apice valde pdosa. Pedes breviusculi sub- 

 graciles : tibiis extus sparse fortiter serratis (ad apicem externum in spinam majorcm, pntsertim 

 in aniicis, productis) : tarsis articulis quatuor bascos miuutis suba?qualibus (primo paulo brcviore, 

 in tibiarum apice immerso, supernc vix couspicuo), quiuto longissimo subclavato. 



Tthyzopertha is in many respects quite as discordant as Ftilinus, — combining 



