BY A. RAFFRAY. 1 33 



truncate*. Pedes breves, femoribus anticis incrassatis et infra 

 compressis. <J. Long. 1-90-2-00 mm. 



Swan River, W.A. (Mr. A. M. Lea). 



The colour of this species is vezy peculiar for a Pselaphid; it 

 bears on each elytron a large and oblong black spot close to the 

 suture. It differs from P. punclulatus, Raffr., by the head being 

 longer, with the sides more oblique, the sulci of the prothorax 

 more shallow, and the punctures which are not so strong but 

 are confluent. 



Paraplectus infcscatus, n.sp. 



Pra?cedenti simillimus. Elytris basi et juxta suturam tantum- 

 modo infuscatis, vix perspicue punctatus, subsericeo-pubescens. 

 Caput magis elongatum et antice magis attenuatum. Antennarum 

 articulis 9-10 magnis, transversis. Prothorax valde cordatus, 

 latitudine maxima multo ante medium, lateribus antice valde 

 rotundatis, postice sulco transverso incisis, sulcis longitudinalibus 

 validioribus. Metasternum obsolete sulcatum; segmentis ventra- 

 libus 2, 3, 4 suba^qualibus, 5 valde angusto, 6 majori, arcuatim 

 profunde emarginato, 7 magno, rhomboidali, operculo ovato, 

 parum notato. Femoribus anticis et intermediis incrassatis, 

 tibiis anticis et intermediis apice intus minute calcaratis. £. 

 Long. 1 -70 mm. 



Pinjarrah, W.A. (Mr. A. M. Lea). 



This species is very closely allied to P. biplagiatits; the head is 

 longer, the prothorax more regularly cordate, with the sides, in 

 front, more rounded and the black spot at the base of the elytra 

 very diffuse. 



Tribe TRICHONYNI. 



Genus Mesoplatus, Raffray. 



Rev. d'Ent. 1890, p. 103. 



The type of this genus is Batrisus barbatus, King, which Dr. 

 Schaufuss included in the genus Trichony.r, Chaud. 



