236 INSECTA MADERENSIA. 



184. Chasmatopterus nigTocinctus, JVoU. 



C. oblongo-ovatus niger subnitidus et pilis longissimis pallidioribus vestitus, prothorace convexo 

 profunde punctato, elytris subrugidoso-punctatis rufo-testaceis, sutura, margine, humeris et 

 scutello nigris, antennis tarsisque picescentibus. 



Long, coi-p. lin. 85. 



habitat Maderani, rarissime : specimen unicum tantum \ idi, e niuseo Heincckeniano a Rev**" Dom. 

 Lowe benigne communicatum. 



C. oblong-ovate, deep black, with a just appreciable tendency to take an obscure bluish tinge, very 

 sliglitly shining, and sparingly clothed with exceedingly long and flexible griseous pile. Head 

 thickly, but rather confusedly punctiu'cd ; and with the front and lateral margins of the clypeus 

 raised and recurved. Prothorax convex, and rather narrower than the elytra (being widest about 

 the middle, though slightly broader behind than before) ; with just perceptible indications of a 

 dorsal channel jiosteriorly ; and uniformly beset with large, deep and distinct punctures (which 

 are dcc])er, and much more remote and defined, than those upon the head). Elytra subrugulose; 

 and co\ ered with large, but rather shallow and not veiy well-defined, punctures (which are not 

 however disposed in strise) ; testaceous, — with the suture, the lateral and apical margins, and the 

 shoulders (which are exceedinglv prominent), together with the scutcllum, black. Antenna and 

 tarsi slightly picescent. 



Apparently extremely rare ; and hitlierto unique, — tlie specimen from wliich the 

 above description has been draAin out having- been communicated to me by the 

 Rev. H. T. Lowe from the collection of the late Dr. llciuccken, by Avlioni it was 

 captiu'ed, many years ago, near Eunchal. 



Sectio VI. PRIOCERATA. 



Fam. 24. THROSCID^. 

 Genus 83. TRIXAGUS. 



Kugelaun, in Schneid. Mag. v. 534 (1794). 



Corpus parvum, ellipticum, pubescens : prothorace postice lato lobato elytris arete applicato, angulis 

 posticis valde acuto-productis ; prosterno antice leviter producto : alis amplis. Antenna brevius- 

 culae (capite jjrothoraceque breviores) perfoliato-clavatae, in foveA sub margine prothoracis inter 

 otium repositK, articulis prime et secundo robustis (dlo clongato subclavato, hoc brevi sub- 

 globoso), tertio ad octavum parvis subrrqualibus, rehquis clavam magnam elongatam snbper- 

 foliatam triarticulatam efficientibus. Lalmim subsemicirculare jjilosum. Mandibulte validse, 

 extus leviter pilosse, apicem versus incurvae acuta;. Maxillce bilobse : lobo externa lato, intus et 

 apice valde pubescenti : interna angusto incurvo ciliato. Pa/pi clavati; ma.riUarcs articulo primo 

 parvo, secundo et tertio majoribus crassioribus (illo hoc paulo longiorc), ultimo magno subsecuri- 

 formi ; labiates articulo priuio parvo, secundo paulo longiore subclavato, tertio magno subsecuri- 

 formi. Mention anipluni trausversum, antice in lobum medium productum. Lir/ula magna 



