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:
and the output looks like the following after running the command posted above.
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.