There are two hoses which snake wildly around
the oil filter. One is an intake, the other is a return
of coolant to cool the engine oil?????

One is identified as Volvo #1271449.
The second is not listed (even EOL #). Any ideas?

Mine are looking rough and would like to prepare for
PM sooner than later.

You're right about the purpose of the hoses, but you may have to bring your hoses to your local parts store and ask to browse their hose section so you can pick out hoses with diameters and shapes that can be cut to suit. I've done this a number of times for unique or NLA hoses.