Chart of the Antaectic Region, showing the becoedbd occubeences of the theee itpical species of Ch.^ioqnatha; 



AND THE approximate NOETHBRN LIMITS OF HAMATA AS A SDRFAOE FORM (iSOTHEEM OF IS'O C), 

 AND OF SEES ATO-DBNT ATA (iSOTHEEM OF 6° C.) ABE ALSO SHOWN. 



