Contacts on iPhone 5S not matching up with Contacts on iMac

Running OSX Mavericks on iMac version 10.9.5

Running iOS 8.4.1 on iPhone 5S

There are contacts that have been added on my iPhone that do NOT show up in my address book on my iMac. The cloud is functioning properly on both devices, I believe, as my calendar and email are updating simultaneously on both devices.

Please advise where there may be an incorrect setting or a process I might undertake to bring the contacts in line with one another on my devices.

Thank you.