How many hurigashi when they cry mangas are there?

There is only one official manga adaption of Higurashi no Naku Koro ni, though it is commonly divided up into arcs. The arcs are:
Onikakushi-hen (Abducted by Demons Arc): 2 volumes
Watanagashi-hen (Cotton Drifting Arc): 2 volumes
Tatarigoroshi-hen (Curse Killing Arc): 2 volumes
Himatsubushi-hen (Killing Time Arc): 2 volumes
Meakashi-hen (Police Detective Arc): 4 volumes
Tsumihoroboshi-hen (Atonement Arc): 4 volumes
Minagoroshi-hen (Massacre Arc): 3 volumes
Matsuribayashi-hen (Festival Forest Arc): 2 volumes
Onisarashi-hen (???): 2 volumes
Yoigoshi-hen (Overnight Arc): 2 volumes
Utsutsukowashi-hen (???): 1 volume
Kokorroiyashi-hen (Heart Healing Arc): 1 volume

(Sorry about the translations; I couldn't find some of them and had to try to puzzle them out myself.) There are also uncollected chapters from Minagoroshi-hen and Matsurbayashi-hen, as well as Hirukowashi-hen in its entirity. Furthermore, the manga is ongoing, currently standing at a total of 27 volumes.