Ren and others! i'm not sure at the moment, and i'm more tired than that i can check it at the moment! but you can check it:
there's a Luohan quan form:
Luohan Quan 1lu (form)- shaolin.org.cn
Luohan Quan 1lu+2lu (the 2lu here is Xiao/1Lu Luohan!!!), forms and applications
this form seemed to me at the first sight to be the the matching form for those Luohan 18 Shi in Liu Zhenhai&Wang Xigan's book, but it has more movements, however. interestingly, they've coupled this so-called 1lu form with Xiao/1Lu Luohan as the 2lu!!!
(i don't know where, but i've seen this form somewhere else, under a different title! besides, why they've considered it as 1lu to Xiao/1Lu Luohan? it's a 1Lu itself!!!)