How To Create Coroutine Delegates?

Lamely attempting to create an array of coroutines and get the following error: "Cannot convert 'function(): System.Collections.IEnumerator[]' to 'System.Collections.IEnumerator[]'."

I've tried a whole bunch of combinations of types for the variable "coroutine" but keep getting different kinds of errors. Here's my latest attempt:

 var coroutines : IEnumerator[];
 
 function Start()
 {
     coroutines = [First, Second, Third];
     yield StartCoroutine(coroutines[0]);
     yield StartCoroutine(coroutines[1]);
     yield StartCoroutine(coroutines[2]);
     print("Done!");
 }
 
 function First() : IEnumerator
 {
     print ("First!");
     yield WaitForSeconds(2.0);
 }
 
 function Second() : IEnumerator
 {
     print ("Second!");
     yield WaitForSeconds(2.0);
 }
 
 function Third() : IEnumerator
 {
     print ("Third!");
     yield WaitForSeconds(2.0);
 }

Any thoughts? Maybe what I'm attempting isn't possible in Javascript?