If you can link us a picture we can ID it down for you. Almost all spiders you find in the US contain some form of venom (Spiders are not poisonous since poison has to be injested while venom has to be injected). However, bites from wolf spiders and grass spiders, like this one, are not medically significant unless the person develops an allergic reaction or is allergic. I would keep an eye on the bite and use a mixture of baking soda and water to soothe the bite wound. Make sure to clean and sanitize it with isopropyl alcohol first.

yeah... maybe that would be better. I don't want to insult anyone here but they really were so far gone they had nothing left but to suffer while they died. I think i't selfishly self-righteous to 'never harm' God's creatures. If i only relieve them from suffering it is enough. I hate killing but sometimes it is a duty to do what is right and needed in reality. If i just set them outside to ease my conscious it's cruel.

You'll also provide more food to other starving predators.

The dying spiders will provide nourishment for birds and mammals in order for them to survive the harsh winter...unless you need to kill the spider for research purposes, I suggest letting them go outside so that even if they were to die, hungry predators will still be able to stock up before the frost. If you want to "ease your consciousness for cruelty," I suggest not being cruel to those that actually might have a chance if you were to let go of the spiders. Humans have already tampered with nature enough...little things will help those out there to survive.

I stand corrected. Honestly. No-one ever put it to me that way. I feel more sure of this than of my way of handling it. Thank you, guys, for taking the time to reason with me. I appreciate it!

Thank you.
Any idea why they come to this basement in droves just to die?

They are trying to escape the cold, but they are already old...add that to a lack of food and they will sucumb to the cold. It is only natural instinct for them to move to a warm area, its just that they are too old to actually get back out.