Not sure if wget supports this or not, but you could use a bash script to accomplish this fairly easily.
Step 1. Copy and paste all of the text from the "index of /i" into a file called "files" or something else that makes sense on the new host.
Step 2. On your new machine use the following command to do a search & replace to create the wget commands for each file you need to download.
cat files | sed "s/^/wget http:\/\/yoursite.com\/path\//"
This reads the file named "files" and then pipes it to sed which inserts "wget http://yoursite.com/path/file1.png"
For example I ran it on a file on my local computer. The "files" file contains just the .png files like the following:
blah.png
blah1.png
blah2.png
and the output looks like the following after running the command posted above.
wget http://yoursite.com/path/blah.png
wget http://yoursite.com/path/blah1.png
wget http://yoursite.com/path/blah2.png
At that point, you just copy and paste the all the wgets that are generated in terminal or from command line it it will download each file.