ON THE P8ELAPHID.E OF AUSTRALIA. lo3 



dato, coiivexo, lateribus antice convexis postice coutractis ; 

 abdomine tnarginato bicarinato. 

 Long. ^\%. 



Lane Cove and Illavvarra by W. MacLeay, Esq. 

 Petersham by Mr. Masters. Paramatta, R.L.K. 

 The Illavvarra specimen, a female, was found under bark, in 

 company with Heterognatlius Armitagei, and some small ants. 



TrRUS SUBULATUS. 



Piceus creberrime punctatus sub lente setosus ; capite ante 

 oculos excavata ; autennarum clava sub-triarticulata articulo 

 ultimo magno ; palporum maxillarium articalo ultimo prope 

 basin inflato, ad apicem subulato ; thorace ante medium 

 latiori, antice rotuudato, postice leviter contracto ; elytris 

 linea suturali altera discoidali dimidiata notatis ; abdominis 

 segmento 2^° magno. 

 Long.^. PL Vn.,fig. 6. 



Paramatta, Dunheved. Kot infrequent in Autumn under 

 stones, &c. 



The last joint of the maxillary palpus clearly distinguishes 

 this fine species from its congeners. 



Tychus nigricollts. 



Niger, elytris castaneis, sutura nigri cante ; capite polito, 2''"*' 

 inter oculos impressionibus, autennarum maris articulo 10""° 

 denticulato 11™°- excavato ; thorace obcordato non foveo- 

 lato ; elytris linea suturali nulla discoidali. 

 Lono-. -A_ PI VII., fio-. 7. 

 Paramatta. Sydney, Mr. Masters. 

 I captured a few individuals of this species under the trunk of 

 a dead tree in a very moist situation ; October 12th. It is more 

 agile than most of the PselaphidsB. 



The 5th joint of the antennfe in the male is almost globular 

 and has a rather prominent tubercle. The corresponding joint 

 in the female is as long as that in the male, but hardly thicker 

 than the other joints. 



Eight species of this genus appear to have been described — 

 four of which are European, and four from North America. 



