Mr. T. V. Wollaston on Additiom to Madeiran Coleoptera. 449 



vissimo, fere medium versus oculi (valde demissi) ascendente : 

 antennis brevissimis incrassatis ; scapo brevissimo valde clavato ; 

 faniculo 6-articulato, art" l^omaguo, apice truncate, reliquis longi- 

 tudme 88qualibus, latitudine vix crescentibus, omnibus inter se arete 

 compressis et ultimo clavse sat arete adpresso ; capitulo solidissimo 

 ovato, apice obtuso, baud annulato. Pedes anteriores basi ap- 

 proxunati, pnstici parum distantes : tarsis brevioribus quam in 

 Rhyncolo, art" 3"° multo minore minus dilatato. 

 Ab e^, sex, et af)dpor, articulus. 



The remarkable insect from which the above characters have 

 been drawn has at first sight much the appearance of an ordinary 

 Rhyncolm, with which, indeed, before examination, I had inad- 

 vertently associated it. But, on further inspection it will be 

 found to differ in the most essential particulars, — its 6-jointed 

 funiculus (instead of 7-), in conjunction with the sliortness and 

 breadth of its siibtrianyular rostrum, and the small size of its 

 almost unexpanded antepenultimate tarsal joint (in which respect 

 it makes an approach to Leipommata), at once separating it from 

 the members of that genus. Moreover, the excessive brevity 

 and thickness of its antennae — the scape of which is remarkably 

 short and robust, and the joints of the funiculus (except the 

 enlarged basal one) closely pressed together, and with the club 

 extremely solid, not perceptibly annufated, and very obtuse at 

 its apex — is another feature which will still further remove it 

 from the Rhyncoli. 



Hexarthrum compressum, n. sp. 



H. subcylindricum, piceum, subnitidum ; rostro profunde et dense 

 punctato (punctis plus minus longitudinaHter confluentibus) ; pro- 

 thorace valde profunde punctato (punctis magnis) ; eljtris profunda 

 striato-punctatis et dense rugulosis, interstitiis latius'culis et longi- 

 tudinaliter minutissime punctulatis ; antennis pedibusque vix dilu- 

 tioribus. 



Long. Corp. lin. 1|. 



Habitat Maderam australem, in ligno antique ad "Praia Formosa" 

 a Dom. Bewicke captum. 



H. subcylindrical and rather depressed, piceous, slightly 

 shining, and (except under a high microscopic power) almost 

 free from pubescence. Rostrum very short, broad, and trian- 

 gular, without any central keel, but closely and deei)ly punc- 

 tured, — the punctures having a greater or less tendency to be 

 longitudinally confluent. Prothorax very deeply and regularly 

 punctured (the punctures being extremely large, but also with 

 a little tendency to be disposed in longitudinal furrows down 

 the disk), its broadest part further behind than in the Rhyncolus 

 tenax, and less evidently margined along its extreme posterior 

 edge than in that insect. Elytra densely rugulose and deeply 



Ann. 6f May. N. Hist. Ser. 3. Vol. v. ' 30 



