278 Rev. A. Matthews on the grnvs Amblyojiiniit^. 



except those points whicli I have ah-eady noticed, and all those 

 parts have been described with great accuracy by Dr. Erichson 

 in his " Genera et Species Staphylinorum." But I think it would 

 be better to consider the parts, which in his description of the 

 tiomplex organ termed " the labium," Dr. Erichson distinguishes 

 by the names " segmentum primum " and " segmentum innoni- 

 inatum," as together forming the true mentum, in fact a mentum 

 duplex, a very common form throughout the whole class ; a 

 strictly analogous formation also exists in the labrum of Aiiif>l//ti- 

 pinus, vid. f. 2, and other genera of Brachehitra. 



The discrepancies which exist betAveen my figures of sonic 

 of the organs of the mouth, and those given by M. Solsky, i do 

 not consider of material importance, for it is utterly impossible 

 to discern the true outline of any of these parts imless the 

 preparation is immersed in Canada Balsam. 



AMBLYOPINUS, Solsby. 



Ambh/opinvs Jansoni, n. sp., PI. VI. 



L.c. 2^-3 lin. := ;")-(! mm. Rufo-testaceus longe setosus, 

 capite atque pronoto magnis nitidissimis ; elytris perbrevibus 

 rugose punctatis ; abdomine sat longo medium versus latiori 

 rugose punctato; pedibus atcpie antennis modicis, illis robustis, 



Cajiiit magnum nitidissimum, rugis perlevibus sinuatis cou- 

 fertissime dispositis per totum eleganter notatum, punctis duobiis 

 magnis et profundis supra oculum, duobus minoribus ad angulum 

 posteriorem, quatuor exiguis curvatim dispositis in disco utrinque, 

 atque quatuor equidistantibus, exterioribus permagnis, ad basim 

 impressum, Oculi minuti ovales glabri lenticulis nuUis in- 

 structi in recessu jirofundo sub lamina^ frontalis margine laterali 

 siti. Antenna" modicte articulo tertio secimdo longiori. 



Pronotnm sat magnum sub-ovale capite fere ]iariter longum et 

 latum nitidissimum, rugis perlevibus sinuatis confertissime dis- 

 positis per totum eleganter notatum, levissime et remote piuicta- 

 tum, punctis duobus parvis ad mediam marginem anteriorem, 

 tribus ad angulum utrum(|ne anteriorem deflexum, atque singulo 

 ad angulum utrumque posleriorem impressum, mai'ginibus later- 

 laibus atque basali leviter reflexis. E ])unctis liisce omnibus 

 et capitis et pronoti seta; erecta; plerumque louga; et valida^ 

 exoriuntur. 



