Parasola lactea ?

Parasola lactea (A.H. Sm.) Redhead, Vilgalys & Hopple, Taxon 50(1): 236. 2001. (Syn: Pseudocoprinus lacteus A.H. Sm.; Coprinus leiocephalus P.D. Orton; Parasola leiocephalus (P.D. Orton) Redhead, Vilgalys & Hopple) ?;
[efloraofindia:35946] Mushroom for id 250510MK3 : Attachments (2). 7 posts by 4 authors.
Please help to id this mushroom found on the forest floor closer to river at an altitude of 500 msl.
Place: Nilgiris North Forest Division
Date: 05 May 2010
Can it be some species of Agrocybe?
The pileal surface was 5 -7 cm broad (diameter).
But I think Agrocybe species have less than 3cm broader Pileal surface.
Please refine.
There are two mushrooms. The smaller one on the left is Coprinus sp. I will try to identify the other one.
The smaller one may be Coprinus leiocephalus which has grey, delicate, egg-shaped cap. These mushrooms are growing on dung.




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