INSECTA MADERENSIA. 573 



Genus 196. MYCETOPORUS. 



Mamierlieim, Brachel. 62 (1831). 



Corpus parvum, angusto-fusiforme, antice et postice deorsum cui-vatum : capite prothoraceqae politis- 

 simis ; illo subacuminato detlexo ; hoc postice lato, elytris arete applicato, punctis quatiior (mar- 

 gine anteriori magis minusve approximatis) transversim impresso : elytris punctorum seriebus 

 tribus (una sc. suturali, secunda dorsali, et tertia marginali) longitudinaliter impressis, ad 

 angulum exteriorem posticum oblique subtruncatis : alis amplis : ahdomine marginato, apicem 

 versus plerumque valde attenuate, deorsum curvato. Antenna sub frontis margine insertse, capite 

 prothoraceque modo vix longiores, modo (ut in specie nostr^) lis longitudine vix sequales ; apiceui 

 versus, priesertim in maribus, plus minusve incrassatae. Instrumenta cibaria fere ut in Tacbino, 

 sed maxillarum lobus exterrius curvatus, minus obtusus ; palporum articulus uttimus minutus tenuis 

 subulatus {maxillarium tertius clavatus) ; et liffu/a multo angustior, apice rotundata Integra. 

 Pedes robusti; coxis intermediis valde approximatis: tibiis omnibus spinulosis: tarsis 5-articu- 

 latis simplicibus ; anticis crassiusculis ; posterioribm elongatis, articulo primo longiusculo. 



MtjcetopovKS {= Ischnosoma of Stephens, a.d. 1832) may be readily known by 

 its narrow fusiform body, which has not only its head but even the abdomen con- 

 siderably curved downwards, and by the imjoressed points on its prothorax and 

 elytra, — the former of which has always four, arranged transversely, behind the 

 anterior edge (in addition to others, elsewhere distrilDuted, characteristic of the 

 several species) ; whilst on the latter there are usually three longitudinal series 

 (sutural, discal, and lateral), more or less developed. It is a good deal allied, in 

 general structure, to the genus Bolltohius (which, apparently, however does not 

 occvu- in the Madeira Islands) ; but the entire front margin of its ligula, in con- 

 junction with the slender, subulated terminal joint of its palpi, wiU, of themselves, 

 at once distinguish it from that group. 



445. Mycetoporus pronus. 

 M, rufo-testaceus nitidus, pectore abdomineque (ano plus minusve ferrugineo excepto) nigricantibus, 

 protborace punctis lateralibus nullis impresso et serie apicali a margine anteriore remota, antennis 

 apicem versus infuscatis, pedibus testaceis. 

 Var. /3. minor, antennis plerumque pallidioribus. 

 Long. corp. lin. If [status tyjncus) ; et 1-1| [var. /3). 



Mycetoporus pronus, Erich. Kiif. der Marie Brand, i. 41-1 (1839). 

 _ , Erich. Gen. et Spec. Staph. 285 (1839). 



Habitat per jMaderse partem sylvaticam, sub cortice arborum laxo foliisque dejectis, sestate rarior. 



M. slender and fusiform, being much acuminated both before and behind (though especially the 

 latter), shining, and clear rufo-testaceous. Head and joroMoraa^ very highly polished ; the former 

 small, narrow, and rather acuminated ; the latter as broad behind as the base of the elytra, and 

 attenuated in front, without any punctures on the disk and sides, and with the four transverse 

 ones remote from the anterior margin. Elytra rather less shining than the head and prothora.x, 

 and with the three longitudinal rows of punctures (especially the discal one) distinct ; sometimes 



