INSECTA MADERENSIA. 611 



pi'othorax, it may be immediately recognised by its densely and coarsely roughened 

 (tbough not very distinctly strignlose) and perfectly opake upper svu-face, by its 

 oblong head, small eyes, lengthened antenna?, and by its light and rusty hue. Its 

 colour indeed (unless my single example be immature, — which however, even if 

 such is the case, would hardly account entirely for its peculiarity in this respect) 

 is very remarkable, — its prothorax (on which the discal sulci are almost obsolete) 

 and eyes being of a bright brownish-ferruginous, whilst its elytra and abdomen 

 are more dull, and its head is nearly piceous. It was captm'ed, by myself, during 

 the spring of 1848, out of a di-ied bone in the Eev. R. T. Lowe's garden at the 

 Levada, — where I have since constantly searched for it, bvit in vain. 



Genus 210. TROGOPHLCEUS. 



Manuerlieim, Brachel. 49 (1831). 



Corpus sat minutum, plus minusve sixbcyclindrico-lineare, plerumque creberrime et minutissime punc- 

 tulatum et subtiliter sericeo-pube.scens : capita porrecto, prothorace immisso ; oculis rotundatis, 

 prominulis : prothorace subcordato, in dorso ssepius longitudinaliter bi-impresso : scutello ple- 

 rumque obsoleto (rarius observando) : alis amplis : ahdomine linear! marginato. Antenna et 

 imtrumeiita cibaria fere ut in genere prsecedenti, sed palporum maxillarium articulus ultimus 

 crassior ; palpi lahiales breviores ; et paraglossa ligulse omnino connatae eamque baud superantes. 

 Pedes breves subtenues {intermedii approximati) : tibiis muticis pubescentibus : tarsis 3-articulatis 

 brevibus, articulis primo et secundo brevissimis. 



The little insects included under the genus Trogopliloeiis may be known by their 

 narrow and subcylindrical bodies, by theu' closely and minutely punctulated and 

 delicately pubescent surfaces, by their more or less subcordate prothorax (which is 

 generally impressed vidth two somewhat interrupted longitudinal fovesB on its 

 hinder disk), and by then* unarmed tibiae and exceedingly short feet. They occur 

 principally in muddy sj)ots, especially at the edges of stagnant water and of par- 

 tially dried streams : nevertheless a few are stated to be found beneath the bark 

 of trees, — a position however in which I have not myseK ever succeeded in de- 

 tecting them. 



478. Trogophlceus nanus, Woll. 

 T. subcylindrico-angustus subnitidus creberrime subtiliter punctulatus et pube subtili cinerea undique 



tectus, prothorace subcordato, in disco postico obsolete quadrifoveolato, antennis palpisque fusco- 



picescentibus, pedibus diluto-testaceis. 

 Long. Corp. lin. 1. 



Habitat per margines aquarum Maderse, rarissimus : ad Sanctam Annam sestate media a.d. 1850 tria 

 specimina cepi. 



T. minute, narrow, linear, and somewhat cylindrical ; black, slightly shining, densely and minutely 

 punctulated (less distinctly so on the abdomen), and beset all over with a delicate cinereous 



4l2 



