AbstractChromosome counts are reported from five species of Antarctic hepatics belonging to five genera and four families. The chromosome numbers in the generaHerzogobryum(H. teres n= 9) andPaehyglossa(P. dissitifolia n= 9) are reported for the first time. The first chromosome count fromLophozia excisa, n= 27, is the highest reported fromLophozia.A diploid number,n= 18, is reported for the first time fromBarbilophozia hateheri; a second count,n= 9, agrees with earlier reports. The commonest Antarctic liverwortCephaloziellacf.exili[lorahasn= 18 and this agrees with earlier reports for the genus.