27H Rev. A. Matthkws an the (ji'mis Ambljopiiuis. 



except those points which 1 liave uh-eacly noticed, and all these 

 ])arts have been described Avith 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 

 complex organ termed '' the labium," Dr. Erichson distinguishes 

 by the names " segment um primum " and " segmentum innom- 

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

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

 strictly analogous formation also exists in the labrum of Ainbhui- 

 iniiiis, vid. f. 2, and other genera of Brachehjtra. 



The discrepancies which exist between my figures of some 

 of the organs of the mouth, and those given by M. Solsky, 1 do 

 not consider of material importance, for it is utterly impossible 

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

 preparation is immersed in Canada Balsam. 



AMBLYOPINUS. Solsky. 



Aiuhlyopinvs Jansoni, n. sp., PI. VI. 



L.c. 2^-3 lin. = '^-^y mm. Rufo-testaceus longe selosus, 

 capite at(|ue pronoto magnis uitidissimis ; elytris perbrevibus 

 rugose jjunctatis ; abdomine sat longo medium versus latiori 

 rugose punctato; pedibus atque antennis modicis, illis robustis. 



Caput magnum nitidissimum, rugis perlevibus sinuatis con- 

 fertissime dispositis per totum eleganter notatum, punctis duobus 

 inagnis et profundis sujjra oculum, duobus minoribus ad angulum 

 posteriorem, quatuor exiguis curvatim dispositis in disco utrinquc, 

 at(jue quatuor equidistantibus, exterioribus permagnis, ad basim 

 impressum, Oculi minuti ovales giabri lenticidis nuUis in- 

 structi in recessu ])rofundo sub lamina2 frontalis margine laterali 

 siti. Antenna^ modicje articulo tertio seciuido lougiori. 



Pronotmii sat magnum sul)-ovale capite fere ])ariter lougiim et 

 latum nitidissimum, I'ugis perlevibus sinuatis confertissime dis- 

 ])ositis per totum eleganter notatum, levissime et remote puncta- 

 tum, punctis duobus parvis ad mediam margin em anterioi-em, 

 tribus ad angulum utrumcpie anteriorem deflexum, atque singulo 

 ad angulum utrumque ])osteriorem impressum, marginibus later- 

 laibus atqiic basali leviter reflexis. E punctis hisce oniiiilius 

 et capitis et pronoti setaj erectas plerumque longaj et valitla' 

 exoriimtur. 



