INSECTA MADERENSIA. 567 



elytra, and by its longer, robuster, and paler limbs. I bave seen but three speci- 

 mens ; all of wliicb were captiu'ed by myself, fi'om beneatb decaying leaves, at 

 about 5000 feet above tbe sea, in the wooded region of the Cruzinhas, — during 

 my encampment there in Jvily 1850. 



Genus 192. TACHYPORUS. 



Gravenhorst, Col. Micropf. 12J. (1802). 



Corpus parvum, subfusiforme (antice obtusiusculum, postice attenuatum) : capite prothoraceqwe gla- 

 berrimis politissimis ; illo subdeflexo ; hoc postice lato, elytris arete applicato : alts amplis : abdo- 

 mine marginato, apieem versus attenuato. Antenna et instrumenta cibaria fere ut in Conuro, sed 

 ligula incisio iutegra. Pedes modice elongati : tibiis, prsesertim posterioribus, plus minusve 

 spinulosis : tar'sis omnibus 5-articulatis, articulo quarto minuto ; anticis articulis primo, secundo 

 et tertio subcordatis, in maribus leviter dilatatis ; posterioribus subelongatis, articulo prime 

 longiusculo. 



The distinctions between Tachyporus and Conurus have been already pointed 

 out, — the exceedingly glabrous and highly polished head and prothorax of the 

 former, in conjunction with its margined abdomen, being sufficient (apart from 

 smaller differences both of outline and structure) to separate \i prhnd facie from 

 the latter. Both genera are in habits nearly similar ; though perhaps the 

 Tachypori are (if anything) somewhat less attached to decaying wood and bark 

 than the Conuri, — occurring more particularly amongst moss, and in grassy spots 

 beneath trees, where during the summer and autimmal months they are often- 

 times excessively abundant. 



440. Tachyporus celer, Wall. 

 T. nigro-piceus (vel piceus) subconvexus, antennis, protboracis limbo, ano pedibusque diluto-testaceis. 

 Long. Corp. lin. 1|. 



Habitat per Maderse regionem sylvaticam, sub lapidibus truncisque arborum projectis, inter 2000' et 

 5000' s.m., rarior. 



T. somewhat convex and broad, dark piceous or piceous. Head and prothorax very highly polished ; 

 the latter with the sides broadly, and the anterior and posterior margins narrowly testaceous. 

 Elytra closely and perceptibly punctulated, sparingly pubescent, usually more piceous than the 

 prothorax, and with their extreme apex (especially towards the outer angle), and a very obscurt- 

 dash about the shoulder (occasionally obsolete), indistinctly diluted in colouring. Abdomen with 

 the extreme hinder margins of the basal segments (and sometimes with the apical ones) dull 

 ferruginous or diluted-testaceous. Antenna and legs diluted-testaceous ; the former a little dusky 

 towards their extremities. 



A large and interesting Tacliypoi^us, — inhabiting the forest regions of Madeira, 

 between the limits of from 2000 to about 5000 feet above the sea. It is decidedly 

 scarce, or more strictly perhaps (from the remote spots to which it is confined) 



