Eureka! Snape and the Marauder's Map

[charisjulia]

No: HPFGUIDX 34742

  Pippin wrote (about Snape questioning Lupin about the Map):
>  
>I am kicking myself, because I should have realized this as soon 
>as I finished GoF. The name Snape recognizes from the Map is 
>*Wormtail*. He doesn't know it from Hogwarts, he knows it from 
>being a Death Eater, and (this is the kicker) he 
>thinks "Wormtail" 
>is Voldemort's code name for the traitor  *Sirius Black*.


Jo Serenadust wrote:
> Hang on here.  I believe that the book indicates that Lupin saw 
> both Sirius Blacks and Peter's names on the map and that was what 
> brought him running to the Shrieking Shack (although why he left 
>the 
> map behind for Snape to find, I can't imagine).  Shouldn't Snape 
> have seen both Pettigrews AND Blacks names on the map? 
> 
> Jo Serenadust


          If you re-read Pippin's message (it's No 34626) you'll see 
that Pippin isn't actually referring to the Shreaking Shack scene. 
The incident in question is the one in "Snape's Grudge" after 
Malfoy's head-in-the-air scare. This way it makes sense, because of 
course when the Map's insulting Snape it uses it's makers' nicknames 
("Mr Moony would like to express his astonishment" and so on
) Thanks 
Pippin! That scene had always puzzled me. I never could quite work 
out how on earth Snape thought Lupin might know anything about the 
map.


Cindy wrote: 
>  Why would Snape think Harry got the map from the "manufacturers" 
>if 
>he thinks Wormtail is Black, who is one of the manufacturers? Snape 
>thinks Black wants to kill Harry, so if Black catches up with Harry, 
>why wouldn't Black just kill Harry on the spot rather than give him 
>a 
>map? 

>Cindy

      Snape could have thought that not Black, but Lupin, in league 
with Sirius/Wormtail, had given the Map to Harry to lure him out of 
the school and into Black's clutches. Of course he doesn't know what 
exactly the Map is but he has guessed that it is "instructions to get 
into Hogmeande without passing the Dementors?"