416 Mr. Westwood's Illustrations of the 



ginato 4-setigero. Mentum maximum, cum jugulo ade6 connexum, ut 

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

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

 medio obtuso abbreviate. Labium ultra apicem loborum menti produc- 

 tum. Palpi lahiales qu^m in Pseudomorphd paull6 longiores, triarticulati, 

 articulis duobus terminalibus, subsequalibus, ultimo compresso apicem 

 versus latiori, oblique truncate, subsecuriformi. Antennce gracillimse, 

 dum quiescentes in fossula ad latera menti receptae. Thorax fer^ ut in 

 Sphallomorphd, lateribus magis rotundatis, et angulis posticis minfis acu- 

 tis, subind^ margo lateralis thoracis et elytrorum minils continuus evadit. 

 Elytra obovata, quadrata, depressa, ad apicem obliqu^ subtruncata. Pedes 

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

 bus, tibiis anticis ante apicem intern^ emarginatis. 



SiLPHOMORPHA FALLAX. 



Obscur^ piceo-nigra, baud nitida, sublent^ punctatissima ; elytris striis de- 

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

 ceis. 



Long. corp. lin, 7^- 



Habitat in Nova Hollandia. 



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 same 

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

 der tibiae and tarsi,) mandibles, maxillae, 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- 

 fully allied to Omophron (Latr., Scolytus, F.), its sessile head bringing it near 

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



