XTO had a 5:4 split and the number of shares per adjusted contract was increased to 125.
Standard 100 share contracts have a root symbol of XTO
Adjusted XTO contracts have a root symbol of XTJ
From your Yahoo link, XTO closed at $51.27 and an adj. Feb 45 call goes for $19.40
That means if you buy that call, you'll get 125 shares at $45 for a total cost of $6,440 ($45 + $19.40)
125 shares @ today's close is worth $6,409
Doesn't look like such a good deal to me (g)