The creature takes his mantid claw and scratches on the wall of the tunnel.  When he's done and steps aside, he's scratched 4 of the symbols you've seen into the tunnel wall.  Exact copies.  "Are these some of the symbols?  Thirty Eight symbols total?  I can draw more, to be certain".  There ARE 38 symbols.  How does he know?<br/><br/>"My price is, let me fill you with my seed.  Within a day you will lay my eggs without harm.  During this time, I will tell you everything I know."  He waits for your answer.