416 3Ir. Wëstwood's Illustrations of the 



ginato 4-setigero. Mentum maximum, cum jugulo ade5 connexum, ut 

 vestigium nullum articuli videas, angulis basalibus 4-setosis, lateribus di- 

 latatis, angulis anticis in lobos duos magnos obtusos productis, denteque 

 medio obtuso abbreviato. Labium ultra apicem loborum menti produc- 

 tum. Palpi labiales quàm in Pseudomorphd pauUo longiores, triarticulati, 

 articulis duobus terminalibus, subœqualibus, ultimo compresso apicem 

 versus latiori, oblique truncato, subsecuriformi. Antenncv graciilimœ, 

 dum quiescentes in fossula ad latera menti receptee. Thorax ferè uf in 

 Sphallomorphd, lateribus magis rotundatis, et angulis posticis mim\s acu- 

 tis, subindè margo lateralis thoracis et elytrormii minus continuus evadit. 

 Elytra obovata, quadrata, tlepressa, ad apicem oblique subtruucata. Pedes 

 breves. Femoribus ovato-compressis, tibiis tarsisque gracillimis simplici- 

 buSj tibiis anticis ante apicem interne emarginatis. 



SiLPHOMORPHA FALLAX. 



Obscure piceo-nigra, baud nitida, sublcntc punctatissima ; elytris striis de- 

 cem punctorum parvorum notatis, ore, antennis, pedibus corporeqiie pi- 

 ceis. 



Long. Corp. lin. 7^. 



Habitat in Nova Ilollandiâ. 



In Mus. Dom. Hope, Melly, Newman, 



The four preceding genera possess, as will be readily seen, so many charac- 

 ters in common, that they would doubtless be considered as belonging to the 

 same genus, were they not carefully examined. All of them possess the saiiu 

 formation of the legs, (namely, large oval compressed femora, with very slen- 

 der tibiœ and tarsi,) mandibles, maxilloe, minute maxillary palpi, truncate 

 labial palpi, &c. But I think the differences pointed out above will be con- 

 sidered amply sufficient to warrant the establishment of distinct genera for 

 their reception. 



As to their immediate conjoint affinities amongst Carabideous insects, it is 

 exceedingly difficult to decide. Mr. Kirby considered Pseudomorpha as doubt- 

 fidly allied to Omophron (Latr., Scoh/fus, F.), its sessile head bringing it near 

 to that genus and the aqfiatic Entomophagi. It is probably on account of this 



