508 COLEOPTERA 



very short, or more slight and prominent. Jaws often entirely exposed. 

 Antenna short, inserted at variable points of the rostrum ; funiculus 

 with seven, six, five, or only four joints ; club more or* less oval or sub- 

 globose, corneous at base, its spongy portion more or less prominent. 

 The eyes sometimes finely, sometimes coarsely, facetted, often small or 

 obsolete, invariably strongly separated underneath. Elytra covering 

 the pygidium. Tibia armed with spurs at apex ; tarsi short, filiform, 

 their third joint very often wider than the preceding, but rarely bilobed. 

 Episterna of metathorax narrow ; its epimera small. Mesothoracic 

 epimera acuminate, not at all (or only slightly) elevated. Body almost 

 invariably elongate and linear. 



NOTE. Various structural modifications occur amongst the New 

 Zealand genera. 



Pentarthrum. 



WolL; Genera of the Cossonidce. 



Corpus vel cylindricum vel fusiformi-cylindricum, subnitidum (rariss. 

 subopacum), vel piceum vel castaneum ; rostra (interdum in $ graci- 

 liore, ut in P. huttoni, et minus sculpturato) plus minus elongate (nun- 

 quam longissimo), parallelo ; prothorace sat magno ; metasterno valde 

 elongato. Antenna circa (aut interdum in <f mox ante, sed in $ mox 

 pone) medium rostri insert* ; scapo recto, robusto, gradatim valde 

 clavato ; funiculi (5-articulati) art . 2 do vel (ut in P. huttoni} paululum, 

 vel haud, sequentibus longiore ; capitulo sat parvo subsolido. Pedes 

 crassiusculi ; tarsis art . i mo haud elongato, 3 tio saepius latiusculo cor- 

 dato, sed interdum (ut in P. cylindrico) angusto, simplici. 



903. P. zealandicum, WolL ; Gen. Cossonida, p. 598. P. sub- 

 fustformz'-cylmdricum, subnitidum, piceum elytris plus minus pallidi- 

 oribus ; prothorace triangulari-ovato, convexo, dense sed haud grosse 

 punctato, mox pone apicem sat profunde constricto ; elytris vel piceo- 

 ferrugineis vel clare rufo-piceis, sed per suturam et in limbo plus minus 

 nebuloso-obscurioribus, striato-punctatis, interstitiis transversim rugulosis 

 ac minutissime uniseriatim punctulatis ; antennis pedibusque longius- 

 culis, clare et pallide rufo-piceis; tarsorum art . 3 tio fere simplici. Sub- 

 tus minute et leviter punctulatum. 



Mas. Rostro latiore, parallelo, depressiusculo, sat profunde punctato, 

 necnon in medio canaliculate ; antennis in medio ejus insertis. 



Fern. Rostro graciliore, cylindrico, fere esculpturato, integro, ad basin 

 paululum strangulato ; antennis pone medium ejus insertis. 



Long, corp., lin. 2. 



Habitat Novam Zealandiam, a Dom. Janson communicatum. 



904. P. IqngirOStre, WolL; Gen. Cossonidce, p. 599. P. fusiformi- 

 cylindricum, nitidum, nigro-piceum \ rostro elongato, subparallelo (pos- 

 tice, prsesertim in $ , paululum angustiore), arcuato, minutissime leviter 

 et sat dense punctulato, a fronte (fere impunctata) linea distincte diviso ; 

 oculis prominentibus ; prothorace triangulari-ovali, convexo, subgrosse 



