If I set 'listen_address' to 'localhost' I can't get Cassandra to broadcast on localhost

[Michael Hayes]

If I set ‘listen_address’ in ‘/etc/cassandra/cassandra.yml’:
listen_address: localhost

I can telnet:

telnet <hostname> 9160 -YES
telnet <ip address> 9160 -YES
telnet localhost 9160 - NO

I’m trying to get Usergrid to see Cassandra on localhost, which it currently is 
unable to do. Usergrid is running on Tomcat6.