62 INSECTA MADERENSIA. 



cato, elytrorum margine et sutur^ obscure pallidioribus, antennarum basi pedibusque pallido- 

 testaceis, tarsis plerumque obscurioribus. 

 Var. fi. piceus, prothoracis limbo elytrorumque siitura solum pallidioribus. 

 Loug. coi-p. lin. li-lf. 



Habitat in locis cditioribus jMaderfe, sub lapidibus, prsesertim per partem sylvaticam, a 2500' s. m. 

 fere ad cacumina montium ascendens : ad basin rupium excelsarum in Ribeiro de Santa Luzia, 

 inter radices graminum ibidem crescentium, necnon in regione Fanalensi (5000' s. m.) mense 

 Julio A.D. 1850, rarius deprehensi. 



B. oblong-ovate, piceous, sbining, sometimes with a just perceptibly bluish tinge. Prothorax testa- 

 ceous, with a more or less dusky cloud on its disk ; a little longer in proportion than that of the 

 last species, and rather more naiTowed behind, where it is slightly punctured but not transversely 

 impressed; the posterior angles obtuse; with an obscure dorsal channel, and a narrow fovea on 

 either side at the base. Elytra less deeply striated than in the B.fulvus, the strise however, as 

 in that insect, being impunctate ; the suture and lateral margins, especially the former, a little 

 paler. Antenna fuscous towards the apex ; their base, the palpi, and the legs pale testaceous, — 

 the tarsi and the extremity of the tibia being usually a little darker. 

 Var. fi. entirely piceous-black, with the extreme margins of the prothorax and the sutui-e of the 

 elytra, alone, very obscurely paler. Legs, palpi and antenna as in the normal state. 



A most distinct and beautiful Bradycelhis, and apparently of the greatest rarity, 

 being confined, so far as I have hitherto observed, to remote upland spots more or 

 less difficult of access. I have taken it, during the winter and early spring, 

 towards the upper extremity of the Eibeiro de Santa Luzia, especially from amongst 

 loos(^ stones at the roots of the vegetation at the immediate base of the lofty 

 periJcncUcular rocks : and in July 1850 I captured it sparingly in the bed of a 

 dried-up stream in the elevated region of the Fanal, more than 5000 feet above 

 the sea : and a specimen has been recently communicated to me by M. Rousset, 

 from the Pico d'Arribentao, above Ftmchal. 



Genus 22. TRECHUS. (Tab. II. fig. l, 2, 3.) 



Clairvillc, Ent. Reh. ii. 23 (180G). 



Corpus parvum, plus minusve ovatum, vel oblongo-ovatum : prothorace subquadi-ato : alts typice amplis, 

 sed in spcciebus Jladerensibus plurimis obsolctis. Antenna filiformcs, capitc prothoraceque 

 paulo lougiores, articulo primo scquentibus robustiore, secundo breviusculo. Labruni (II. 1«, 2rt) 

 transversum, antice plus minusve emarginatum et setis paucis longissimis instructum. Mandi- 

 bula (II. 1 a) prominula; acut?e, intus basi denticulatpc. Maxilla (II. 1 6, 2 b) bilobre : lubo 

 externa palpiformi biartieulato : interna acuto incurvo, apice uncinato, intus valde ciliato. Palpi 

 articulo ultimo penultimo paulo minore, in typicis couico, sed in nostris plerumque subfusiformi- 

 conico. Mentum (II. 1 c, 2 c) transversum, antice profunde emarginatum et dente medio vel (ut 

 in spcciebus typicis) integro, vel (ut in aben-antibus) bifido instructum. Ligiila cornea, apice 

 rotundata, rarius truncata ; paraylassis linearibus, cam louge supcrantibus. Pedes graciusculi : 

 tarsis aniicis in maribus (II. 1 d) articulis primo et secundo dilatatis atque intus productis : un- 

 guiculis simplicibus. 



