Focks those mushrooms look a little on the old side

I'd split them lengthwise and have a look in the stems and gills for bugs/ lavae. While the stray bug GENERALLY doesn't cause any problems, I've seen several people become quite sick after eating mushrooms that looked ok(ish), but were home to a few too many bugs
Unless they are perfect specimins, I'd suggest splitting all mushroms lengthwise and do a quick shake/ inspection for bugs - it may be an unnessary step but i'd prefer to get my protein from other sources
FYI two FANTASTIC ways for drying mushrooms when sheets of paper and a fan are not practical.
Ontop on the car dashboard with the demister on

Naturally you'd want to put something between the mushrooms and the glass so your finds are not easily seen by other drivers, but this method dries out even the wettest subs in about an hour. Perfect for bush hunting missions or when you don't intend to be home for a while.
Central heating vents. Place mushrooms on piece of flywire or other fabric with holes in it. VERY loosly tie flywire up with a piece of string. Remove heating vent grill, lower mushroom bag into duct, tie bag onto grill, replace grill and PRESTO!, super sluth drying method. DON'T turn heating up super high (mushrooms loose potency when exposed to 45C+ temps).
In a few hours the mushrooms will be 'still bendable' dry, ready to descicant drying.