I have a click event hooked up to my listview as shown.
int[] GenusListIDs = { R.id.txt_ID, R.id.txt_Genus, R.id.txt_Count };
SimpleCursorAdapter ada
This should do it.
TextView tv = (TextView)view.findViewById(R.id.txt_Genius);
String genus = tv.getText().toString();
Then put it into the intent extras, I think you already know this bit.
i.putExtra("genius", genius);
Edit;
In your new activity you would access the intent and get the extras bundle. You can then access anything you placed in the intent on your previous activity like below;
Bundle extras = getIntent().getExtras();
String genius = extras.getString("genius");
// pop some toast to show the value of genius - not required but shows it works :)
Toast.makeText(this, "Genius value: " + genius, Toast.LENGTH_SHORT).show();